protohackers: Debugging Python Web Scraper with Selenium and BeautifulSoup

{
  "command": "find /home/smite/dev/protohackers/10-voracious-code-storage -type f 2>/dev/null || echo \"Directory is empty or doesn't exist\"",
  "description": "Check contents of 10-voracious-code-storage directory"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/analyze_protocol.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport sys\nimport time\n\ndef analyze_protocol():\n    \"\"\"Connect to the reference server and analyze the protocol\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    print(f\"Connecting to {host}:{port}...\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect((host, port))\n        \n        print(\"Connected! Analyzing initial response...\")\n        \n        # Try to receive initial response\n        try:\n            initial_data = sock.recv(1024).decode('ascii', errors='replace')\n            print(f\"Initial response: {repr(initial_data)}\")\n        except socket.timeout:\n            print(\"No initial response received\")\n        \n        # Try different commands to understand the protocol\n        test_commands = [\n            \"\",  # Empty line\n            \"HELP\",\n            \"help\", \n            \"LIST\",\n            \"list\",\n            \"GET\",\n            \"PUT\",\n            \"QUIT\",\n            \"quit\",\n            \"VERSION\",\n            \"INFO\",\n            \"STATUS\",\n            \"HELLO\",\n        ]\n        \n        for cmd in test_commands:\n            try:\n                print(f\"\\nTesting command: {repr(cmd)}\")\n                sock.send((cmd + \"\\n\").encode('ascii'))\n                time.sleep(0.1)  # Small delay\n                \n                response = sock.recv(1024).decode('ascii', errors='replace')\n                print(f\"Response: {repr(response)}\")\n                \n                if \"quit\" in cmd.lower() and response:\n                    break\n                    \n            except Exception as e:\n                print(f\"Error with command {cmd}: {e}\")\n                break\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Connection error: {e}\")\n\nif __name__ == \"__main__\":\n    analyze_protocol()"
}

{
  "command": "cd /home/smite/dev/protohackers/10-voracious-code-storage && python3 analyze_protocol.py",
  "description": "Run protocol analysis script"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/detailed_analysis.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport sys\nimport time\n\ndef detailed_analysis():\n    \"\"\"Detailed protocol analysis\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    print(f\"Connecting to {host}:{port} for detailed analysis...\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect((host, port))\n    \n    # Collect all responses\n    all_responses = []\n    \n    # Get initial response\n    initial = sock.recv(1024).decode('ascii', errors='replace')\n    all_responses.append(('INITIAL', initial))\n    print(f\"Initial: {repr(initial)}\")\n    \n    # Send various inputs and collect responses\n    test_inputs = [\n        \"A\", \"B\", \"C\", \"D\", \"E\", \"F\", \"G\", \"H\", \"I\", \"J\", \"K\", \"L\", \"M\",\n        \"N\", \"O\", \"P\", \"Q\", \"R\", \"S\", \"T\", \"U\", \"V\", \"W\", \"X\", \"Y\", \"Z\",\n        \"a\", \"b\", \"c\", \"d\", \"e\", \"f\", \"g\", \"h\", \"i\", \"j\", \"k\", \"l\", \"m\",\n        \"n\", \"o\", \"p\", \"q\", \"r\", \"s\", \"t\", \"u\", \"v\", \"w\", \"x\", \"y\", \"z\",\n        \"0\", \"1\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\", \"8\", \"9\",\n        \" \", \"!\", \"@\", \"#\", \"$\", \"%\", \"^\", \"&\", \"*\", \"(\", \")\", \"-\", \"=\",\n        \"[\", \"]\", \"{\", \"}\", \"|\", \"\\\\\", \";\", \"'\", \":\", \"\\\"\", \",\", \".\", \"/\",\n        \"<\", \">\", \"?\", \"~\", \"`\", \"+\", \"_\"\n    ]\n    \n    for char in test_inputs:\n        try:\n            sock.send(char.encode('ascii'))\n            time.sleep(0.05)\n            \n            response = sock.recv(1024).decode('ascii', errors='replace')\n            all_responses.append((char, response))\n            print(f\"Sent: {repr(char)} -> Got: {repr(response)}\")\n            \n            if len(response) == 0:\n                print(\"Connection closed\")\n                break\n                \n        except Exception as e:\n            print(f\"Error with {repr(char)}: {e}\")\n            break\n    \n    sock.close()\n    \n    print(\"\\n=== ANALYSIS ===\")\n    print(\"Responses collected:\")\n    for inp, resp in all_responses:\n        print(f\"{repr(inp):>10} -> {repr(resp)}\")\n    \n    # Look for patterns\n    print(\"\\n=== PATTERN ANALYSIS ===\")\n    message = ''.join([resp for inp, resp in all_responses if resp and resp != '\\n'])\n    print(f\"Combined message: {repr(message)}\")\n    \n    if message:\n        print(f\"Combined readable: {message}\")\n\nif __name__ == \"__main__\":\n    detailed_analysis()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/full_protocol_test.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport sys\nimport time\n\ndef test_complete_session():\n    \"\"\"Test a complete session to understand the protocol\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    print(f\"Testing complete session with {host}:{port}...\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(15)\n    sock.connect((host, port))\n    \n    responses = []\n    \n    def send_and_receive(data, description=\"\"):\n        \"\"\"Send data and receive response\"\"\"\n        if description:\n            print(f\"\\n{description}\")\n        print(f\"Sending: {repr(data)}\")\n        \n        sock.send(data.encode('ascii'))\n        time.sleep(0.1)\n        \n        try:\n            response = sock.recv(1024).decode('ascii', errors='replace')\n            print(f\"Response: {repr(response)}\")\n            responses.append(response)\n            return response\n        except socket.timeout:\n            print(\"No response (timeout)\")\n            return \"\"\n    \n    # Get initial \"READY\" message\n    print(\"=== Getting READY message ===\")\n    initial = sock.recv(1024).decode('ascii', errors='replace')\n    print(f\"Initial: {repr(initial)}\")\n    \n    # Send chars to get READY\n    for i, char in enumerate(\"ABCDE\"):\n        resp = send_and_receive(char, f\"Getting letter {i+1} of READY\")\n    \n    print(\"\\n=== Testing after READY ===\")\n    \n    # Now try different commands\n    test_commands = [\n        \"HELP\\n\",\n        \"LIST\\n\", \n        \"GET test\\n\",\n        \"PUT test hello\\n\",\n        \"STATUS\\n\",\n        \"QUIT\\n\"\n    ]\n    \n    for cmd in test_commands:\n        try:\n            resp = send_and_receive(cmd, f\"Testing command: {cmd.strip()}\")\n            if not resp:  # Connection might be closed\n                break\n        except Exception as e:\n            print(f\"Error with {cmd}: {e}\")\n            break\n    \n    try:\n        sock.close()\n    except:\n        pass\n    \n    print(f\"\\n=== SUMMARY ===\")\n    print(f\"All responses: {responses}\")\n\ndef test_multiple_sessions():\n    \"\"\"Test multiple sessions to see if behavior is consistent\"\"\"\n    print(\"\\n\" + \"=\"*50)\n    print(\"TESTING MULTIPLE SESSIONS\")\n    print(\"=\"*50)\n    \n    for session in range(3):\n        print(f\"\\n--- Session {session + 1} ---\")\n        try:\n            sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n            sock.settimeout(5)\n            sock.connect(('vcs.protohackers.com', 30307))\n            \n            # Get the sequence\n            responses = []\n            initial = sock.recv(1024).decode('ascii', errors='replace')\n            responses.append(initial)\n            \n            for char in \"ABCDEFGHIJKLMNOP\":  # Try more chars\n                try:\n                    sock.send(char.encode('ascii'))\n                    time.sleep(0.05)\n                    resp = sock.recv(1024).decode('ascii', errors='replace')\n                    responses.append(resp)\n                    if resp == '\\n' or len(resp) == 0:\n                        break\n                except:\n                    break\n            \n            print(f\"Session {session + 1} responses: {responses}\")\n            print(f\"Combined: {''.join(responses)}\")\n            sock.close()\n            \n        except Exception as e:\n            print(f\"Session {session + 1} error: {e}\")\n\nif __name__ == \"__main__\":\n    test_complete_session()\n    test_multiple_sessions()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/extract_full_message.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport time\nimport string\n\ndef extract_full_message():\n    \"\"\"Extract the complete message from the server\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    print(f\"Extracting full message from {host}:{port}...\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect((host, port))\n    \n    message = []\n    \n    # Get initial character\n    initial = sock.recv(1024).decode('ascii', errors='replace')\n    message.append(initial)\n    print(f\"Initial: {repr(initial)}\")\n    \n    # Keep sending characters until we get the full message\n    input_chars = string.ascii_letters + string.digits + string.punctuation + \" \\t\"\n    char_index = 0\n    \n    while char_index < len(input_chars):\n        try:\n            char_to_send = input_chars[char_index]\n            sock.send(char_to_send.encode('ascii'))\n            time.sleep(0.02)  # Small delay\n            \n            response = sock.recv(1024).decode('ascii', errors='replace')\n            \n            if response:\n                message.append(response)\n                print(f\"Sent {repr(char_to_send)} -> Got {repr(response)}\")\n                \n                # Check if we've reached some kind of end\n                if len(response) == 0:\n                    print(\"Empty response, stopping\")\n                    break\n                    \n                char_index += 1\n            else:\n                print(\"No response, stopping\")\n                break\n                \n        except socket.timeout:\n            print(\"Timeout, stopping\")\n            break\n        except Exception as e:\n            print(f\"Error: {e}\")\n            break\n    \n    sock.close()\n    \n    full_message = ''.join(message)\n    print(f\"\\n=== COMPLETE MESSAGE ===\")\n    print(f\"Raw: {repr(full_message)}\")\n    print(f\"Text: {full_message}\")\n    print(f\"Length: {len(full_message)} characters\")\n    \n    return full_message\n\ndef test_with_longer_input():\n    \"\"\"Test with a much longer continuous input stream\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    print(f\"\\n=== Testing with continuous input ===\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(15)\n    sock.connect((host, port))\n    \n    message = []\n    \n    # Get initial\n    initial = sock.recv(1024).decode('ascii', errors='replace')\n    message.append(initial)\n    \n    # Send a long string continuously and collect all responses\n    long_input = \"A\" * 1000  # 1000 A's\n    \n    for i, char in enumerate(long_input):\n        try:\n            sock.send(char.encode('ascii'))\n            time.sleep(0.001)  # Very small delay\n            \n            response = sock.recv(1024).decode('ascii', errors='replace')\n            if response:\n                message.append(response)\n                if i % 50 == 0:  # Print progress every 50 chars\n                    print(f\"Processed {i} chars, got: {repr(response)}\")\n            else:\n                print(f\"No response at position {i}\")\n                break\n                \n        except Exception as e:\n            print(f\"Error at position {i}: {e}\")\n            break\n    \n    sock.close()\n    \n    full_message = ''.join(message)\n    print(f\"\\n=== LONGER MESSAGE ===\")\n    print(f\"Length: {len(full_message)}\")\n    print(f\"First 100 chars: {repr(full_message[:100])}\")\n    print(f\"Last 100 chars: {repr(full_message[-100:])}\")\n    \n    return full_message\n\nif __name__ == \"__main__\":\n    message1 = extract_full_message()\n    message2 = test_with_longer_input()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/line_based_analysis.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport time\n\ndef analyze_line_based():\n    \"\"\"Analyze assuming line-based ASCII protocol\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    print(f\"Analyzing line-based protocol at {host}:{port}...\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(15)\n    sock.connect((host, port))\n    \n    def read_until_newline():\n        \"\"\"Read until we get a complete line\"\"\"\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def send_char_and_collect_response():\n        \"\"\"Send a single character and collect the response\"\"\"\n        sock.send(b'X')  # Send any character\n        response = read_until_newline()\n        return response\n    \n    # Get the complete first message\n    print(\"=== Getting complete initial message ===\")\n    first_message = send_char_and_collect_response()\n    print(f\"First message: {repr(first_message)}\")\n    \n    # Try a few more to see what happens\n    for i in range(5):\n        print(f\"\\n=== Message {i+2} ===\")\n        try:\n            message = send_char_and_collect_response()\n            print(f\"Message {i+2}: {repr(message)}\")\n        except Exception as e:\n            print(f\"Error getting message {i+2}: {e}\")\n            break\n    \n    sock.close()\n\ndef test_different_inputs():\n    \"\"\"Test what happens with different inputs\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    print(f\"\\n=== Testing different inputs ===\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect((host, port))\n    \n    def send_and_read_line(data):\n        \"\"\"Send data and read complete line response\"\"\"\n        print(f\"Sending: {repr(data)}\")\n        sock.send(data.encode('ascii'))\n        \n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        \n        print(f\"Response: {repr(line)}\")\n        return line\n    \n    # Test different inputs\n    test_inputs = [\n        \"A\",\n        \"HELLO\",\n        \"HELP\",\n        \"GET\",\n        \"PUT\",\n        \"LIST\",\n        \"QUIT\"\n    ]\n    \n    for inp in test_inputs:\n        try:\n            response = send_and_read_line(inp)\n            if not response:\n                break\n        except Exception as e:\n            print(f\"Error with {inp}: {e}\")\n            break\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    analyze_line_based()\n    test_different_inputs()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/command_analysis.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport time\n\ndef test_commands():\n    \"\"\"Test various commands with proper line endings\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    print(f\"Testing commands at {host}:{port}...\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect((host, port))\n    \n    def send_command_and_read_response(command):\n        \"\"\"Send a command with newline and read response\"\"\"\n        print(f\"\\nSending command: {repr(command)}\")\n        sock.send((command + '\\n').encode('ascii'))\n        \n        # Read response line by line\n        response_lines = []\n        while True:\n            try:\n                line = \"\"\n                while True:\n                    char = sock.recv(1).decode('ascii', errors='replace')\n                    if not char:\n                        return response_lines\n                    line += char\n                    if char == '\\n':\n                        break\n                \n                response_lines.append(line)\n                print(f\"Response line: {repr(line)}\")\n                \n                # Some heuristics to know when to stop reading\n                if line.strip().endswith(('OK', 'ERROR', 'BYE', '.')):\n                    break\n                if len(line.strip()) == 0:  # Empty line might indicate end\n                    break\n                if len(response_lines) > 10:  # Safety limit\n                    break\n                    \n            except socket.timeout:\n                print(\"Timeout reading response\")\n                break\n        \n        return response_lines\n    \n    # Trigger initial READY\n    sock.send(b'X')\n    ready_response = \"\"\n    while True:\n        char = sock.recv(1).decode('ascii', errors='replace')\n        if not char:\n            break\n        ready_response += char\n        if char == '\\n':\n            break\n    print(f\"Initial: {repr(ready_response)}\")\n    \n    # Test various commands\n    commands = [\n        \"HELP\",\n        \"help\", \n        \"LIST\",\n        \"list\",\n        \"GET\",\n        \"PUT\",\n        \"STORE\",\n        \"RETRIEVE\",\n        \"VERSION\",\n        \"STATUS\",\n        \"INFO\",\n        \"HELLO\",\n        \"QUIT\",\n        \"EXIT\",\n        \"BYE\"\n    ]\n    \n    for cmd in commands:\n        try:\n            response = send_command_and_read_response(cmd)\n            if not response:\n                print(f\"No response to {cmd}\")\n                break\n        except Exception as e:\n            print(f\"Error with {cmd}: {e}\")\n            break\n    \n    sock.close()\n\ndef test_file_operations():\n    \"\"\"Test file-like operations\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    print(f\"\\n=== Testing file operations ===\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect((host, port))\n    \n    def send_and_read_all(command):\n        print(f\"Sending: {repr(command)}\")\n        sock.send((command + '\\n').encode('ascii'))\n        \n        time.sleep(0.5)  # Give server time to respond\n        \n        try:\n            response = sock.recv(4096).decode('ascii', errors='replace')\n            print(f\"Response: {repr(response)}\")\n            return response\n        except socket.timeout:\n            print(\"Timeout\")\n            return \"\"\n    \n    # Trigger READY first\n    sock.send(b'X')\n    time.sleep(0.1)\n    ready = sock.recv(1024).decode('ascii', errors='replace')\n    print(f\"Ready: {repr(ready)}\")\n    \n    # Try file operations\n    file_commands = [\n        \"PUT filename content\",\n        \"GET filename\", \n        \"LIST\",\n        \"PUT test hello world\",\n        \"GET test\",\n        \"PUT /path/file data\",\n        \"GET /path/file\"\n    ]\n    \n    for cmd in file_commands:\n        response = send_and_read_all(cmd)\n        if not response:\n            break\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    test_commands()\n    test_file_operations()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/proper_analysis.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport time\n\ndef proper_protocol_analysis():\n    \"\"\"Analyze the protocol properly\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    print(f\"Proper protocol analysis for {host}:{port}...\")\n    \n    # Test 1: Clean connection, proper command format\n    print(\"=== Test 1: Clean session ===\")\n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect((host, port))\n    \n    def read_line():\n        \"\"\"Read a complete line\"\"\"\n        line = \"\"\n        while True:\n            try:\n                char = sock.recv(1).decode('ascii', errors='replace')\n                if not char:\n                    break\n                line += char\n                if char == '\\n':\n                    break\n            except socket.timeout:\n                break\n        return line\n    \n    def send_command(cmd):\n        \"\"\"Send command and get response\"\"\"\n        print(f\"Sending: {repr(cmd)}\")\n        sock.send((cmd + '\\n').encode('ascii'))\n        response = read_line()\n        print(f\"Response: {repr(response)}\")\n        return response\n    \n    # Don't send anything initially - see if server sends greeting\n    print(\"Waiting for server greeting...\")\n    greeting = read_line()\n    print(f\"Greeting: {repr(greeting)}\")\n    \n    # Try proper commands\n    commands = [\"HELP\", \"LIST\", \"GET test\", \"PUT test data\", \"QUIT\"]\n    for cmd in commands:\n        response = send_command(cmd)\n        if \"QUIT\" in cmd:\n            break\n    \n    sock.close()\n    \n    # Test 2: See what happens with different approaches\n    print(\"\\n=== Test 2: Different approach ===\")\n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect((host, port))\n    \n    # Read any initial data\n    time.sleep(0.5)\n    try:\n        initial = sock.recv(1024).decode('ascii', errors='replace')\n        print(f\"Initial data: {repr(initial)}\")\n    except socket.timeout:\n        print(\"No initial data\")\n    \n    # Try simple commands\n    simple_commands = [\"LIST\\n\", \"HELP\\n\", \"PUT test hello\\n\", \"GET test\\n\"]\n    for cmd in simple_commands:\n        print(f\"Sending: {repr(cmd)}\")\n        sock.send(cmd.encode('ascii'))\n        time.sleep(0.5)\n        try:\n            response = sock.recv(1024).decode('ascii', errors='replace')\n            print(f\"Response: {repr(response)}\")\n        except socket.timeout:\n            print(\"No response\")\n    \n    sock.close()\n\ndef analyze_character_by_character():\n    \"\"\"Send commands character by character to understand the issue\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    print(f\"\\n=== Character-by-character analysis ===\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect((host, port))\n    \n    # Send \"HELP\\n\" character by character and see what happens\n    command = \"HELP\\n\"\n    print(f\"Sending {repr(command)} character by character:\")\n    \n    for i, char in enumerate(command):\n        print(f\"Sending char {i}: {repr(char)}\")\n        sock.send(char.encode('ascii'))\n        time.sleep(0.1)\n        \n        try:\n            response = sock.recv(1024).decode('ascii', errors='replace')\n            print(f\"Response: {repr(response)}\")\n        except socket.timeout:\n            print(\"No response\")\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    proper_protocol_analysis()\n    analyze_character_by_character()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/complete_protocol_test.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_all_commands():\n    \"\"\"Test all discovered commands\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    print(f\"Testing all commands on {host}:{port}...\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect((host, port))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def send_command(cmd):\n        print(f\"Command: {repr(cmd)}\")\n        sock.send((cmd + '\\n').encode('ascii'))\n        response = read_line()\n        print(f\"Response: {repr(response)}\")\n        return response\n    \n    # Get initial greeting\n    greeting = read_line()\n    print(f\"Greeting: {repr(greeting)}\")\n    \n    # Test all commands\n    print(\"\\n=== Testing HELP ===\")\n    send_command(\"HELP\")\n    \n    print(\"\\n=== Testing LIST ===\")\n    send_command(\"LIST\")\n    send_command(\"LIST /\")\n    send_command(\"LIST test\")\n    \n    print(\"\\n=== Testing PUT ===\")\n    send_command(\"PUT test hello world\")\n    send_command(\"PUT /path/to/file some content\")\n    send_command(\"PUT file1 data\")\n    \n    print(\"\\n=== Testing GET ===\")\n    send_command(\"GET test\")\n    send_command(\"GET /path/to/file\")\n    send_command(\"GET nonexistent\")\n    \n    print(\"\\n=== Testing LIST after PUT ===\")\n    send_command(\"LIST\")\n    \n    print(\"\\n=== Testing more files ===\")\n    send_command(\"PUT dir/file content\")\n    send_command(\"LIST dir\")\n    send_command(\"GET dir/file\")\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    test_all_commands()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_put_format.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_put_format():\n    \"\"\"Test the proper PUT format\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    print(f\"Testing PUT format on {host}:{port}...\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect((host, port))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def send_data(data):\n        print(f\"Sending: {repr(data)}\")\n        sock.send(data.encode('ascii'))\n        response = read_line()\n        print(f\"Response: {repr(response)}\")\n        return response\n    \n    # Get greeting\n    greeting = read_line()\n    print(f\"Greeting: {repr(greeting)}\")\n    \n    # Test proper PUT format: PUT file length\\ndata\n    print(\"\\n=== Testing PUT with proper format ===\")\n    \n    # PUT filename 5\\nhello\n    data = \"hello\"\n    command = f\"PUT testfile {len(data)}\\n{data}\"\n    send_data(command)\n    \n    print(\"\\n=== Testing GET ===\")\n    send_data(\"GET testfile\\n\")\n    \n    print(\"\\n=== Testing LIST ===\")\n    send_data(\"LIST\\n\")\n    \n    print(\"\\n=== Another PUT test ===\")\n    data2 = \"world123\"\n    command2 = f\"PUT file2 {len(data2)}\\n{data2}\"\n    send_data(command2)\n    \n    print(\"\\n=== GET the second file ===\")\n    send_data(\"GET file2\\n\")\n    \n    print(\"\\n=== LIST again ===\")\n    send_data(\"LIST\\n\")\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    test_put_format()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/careful_test.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef careful_protocol_test():\n    \"\"\"Carefully test the protocol\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    def fresh_connection():\n        \"\"\"Get a fresh connection\"\"\"\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect((host, port))\n        return sock\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def send_command(sock, cmd):\n        print(f\"Command: {repr(cmd)}\")\n        sock.send((cmd + '\\n').encode('ascii'))\n        response = read_line(sock)\n        print(f\"Response: {repr(response)}\")\n        return response\n    \n    # Test 1: Basic commands\n    print(\"=== Test 1: Basic commands ===\")\n    sock1 = fresh_connection()\n    greeting = read_line(sock1)\n    print(f\"Greeting: {repr(greeting)}\")\n    \n    send_command(sock1, \"HELP\")\n    send_command(sock1, \"LIST\")\n    sock1.close()\n    \n    # Test 2: Try proper PUT format with separate messages\n    print(\"\\n=== Test 2: Proper PUT format ===\")\n    sock2 = fresh_connection()\n    read_line(sock2)  # Skip greeting\n    \n    # PUT command first\n    filename = \"test\"\n    data = \"hello\"\n    \n    # Send PUT command\n    print(f\"Sending PUT command: PUT {filename} {len(data)}\")\n    sock2.send(f\"PUT {filename} {len(data)}\\n\".encode('ascii'))\n    \n    # Read response\n    response = read_line(sock2)\n    print(f\"PUT response: {repr(response)}\")\n    \n    if \"OK\" in response:\n        # Send data\n        print(f\"Sending data: {repr(data)}\")\n        sock2.send(data.encode('ascii'))\n        \n        # Read final response\n        final_response = read_line(sock2)\n        print(f\"Final response: {repr(final_response)}\")\n    \n    sock2.close()\n    \n    # Test 3: Try GET\n    print(\"\\n=== Test 3: GET ===\")\n    sock3 = fresh_connection()\n    read_line(sock3)  # Skip greeting\n    \n    send_command(sock3, \"GET test\")\n    sock3.close()\n    \n    # Test 4: LIST directories\n    print(\"\\n=== Test 4: LIST directories ===\")\n    sock4 = fresh_connection()\n    read_line(sock4)\n    \n    send_command(sock4, \"LIST /\")\n    sock4.close()\n\nif __name__ == \"__main__\":\n    careful_protocol_test()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/filename_test.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_filenames():\n    \"\"\"Test what constitutes legal filenames and directories\"\"\"\n    host = 'vcs.protohackers.com'\n    port = 30307\n    \n    def fresh_connection():\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect((host, port))\n        return sock\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def send_command(sock, cmd):\n        print(f\"Command: {repr(cmd)}\")\n        sock.send((cmd + '\\n').encode('ascii'))\n        response = read_line(sock)\n        print(f\"Response: {repr(response)}\")\n        return response\n    \n    # Test LIST with various directory names\n    print(\"=== Testing LIST with different directory names ===\")\n    dirs_to_test = [\"/\", \"\", \".\", \"..\", \"home\", \"tmp\", \"usr\", \"var\", \"etc\", \"root\"]\n    \n    for dir_name in dirs_to_test:\n        sock = fresh_connection()\n        read_line(sock)  # Skip greeting\n        \n        response = send_command(sock, f\"LIST {dir_name}\")\n        sock.close()\n    \n    # Test PUT with various file names\n    print(\"\\n=== Testing PUT with different file names ===\")\n    files_to_test = [\n        \"/tmp/test\",\n        \"/home/test\", \n        \"/var/test\",\n        \"/etc/test\",\n        \"/root/test\",\n        \"/test\",\n        \"test.txt\",\n        \"file\",\n        \"/file\",\n        \"/tmp/file.txt\"\n    ]\n    \n    for filename in files_to_test:\n        sock = fresh_connection()\n        read_line(sock)  # Skip greeting\n        \n        response = send_command(sock, f\"PUT {filename} 5\")\n        if \"OK\" in response:\n            print(\"PUT accepted, sending data...\")\n            sock.send(b\"hello\")\n            final_resp = read_line(sock)\n            print(f\"Final response: {repr(final_resp)}\")\n        \n        sock.close()\n\nif __name__ == \"__main__\":\n    test_filenames()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "content": "# Voracious Code Storage Protocol - Reverse Engineered Specification\n\n## Overview\nThe Voracious Code Storage (VCS) protocol is a TCP-based, line-oriented ASCII protocol for file storage and retrieval. The server listens on port 30307 and provides basic file operations.\n\n## Connection\n- Protocol: TCP \n- Port: 30307\n- Character encoding: ASCII\n- Line termination: \\n (newline)\n\n## Session Flow\n1. Client connects to server\n2. Server sends: \"READY\\n\" \n3. Client sends commands terminated with \\n\n4. Server responds with status messages\n5. Connection remains open for multiple commands\n\n## Commands\n\n### HELP\n**Request:** `HELP\\n`\n**Response:** `OK usage: HELP|GET|PUT|LIST\\n`\n**Description:** Shows available commands\n\n### LIST\n**Request:** `LIST <directory>\\n`\n**Response:** \n- Success: `OK <count>\\n` followed by <count> lines of filenames\n- Error: `ERR usage: LIST dir\\n` (if no directory specified)\n- Error: `ERR illegal dir name\\n` (if invalid directory)\n\n**Valid directories:** \n- \"/\" (root directory) - only confirmed valid directory\n- Other directories appear to be restricted\n\n**Example:**\n```\nLIST /\nOK 0\n\n```\n\n### PUT (Store File)\n**Request:** `PUT <filename> <length>\\n<data>`\n**Response:**\n- Success: `OK <revision>\\n` \n- Error: `ERR illegal file name\\n`\n- Error: `ERR usage: PUT file length newline data\\n`\n\n**Description:** \n- Stores a file with specified name and data\n- Length must match the actual data length\n- Data follows immediately after the PUT command line\n- Returns revision number on success\n\n**File naming constraints:**\n- Specific format required (exact rules unclear from testing)\n- Simple names like \"test\", \"file1\" appear invalid\n- Absolute paths may be required\n\n### GET (Retrieve File)  \n**Request:** `GET <filename>\\n`\n**Response:**\n- Success: File content (format TBD)\n- Error: `ERR no such file\\n`\n- Error: `ERR illegal file name\\n`\n\n## Error Messages\n- `ERR illegal method: <method>\\n` - Invalid command\n- `ERR illegal file name\\n` - Invalid filename format  \n- `ERR illegal dir name\\n` - Invalid directory name\n- `ERR no such file\\n` - File does not exist\n- `ERR usage: LIST dir\\n` - LIST command needs directory argument\n- `ERR usage: PUT file length newline data\\n` - PUT command format error\n\n## Protocol Characteristics\n- Line-based: Each command/response ends with \\n\n- Case-sensitive commands (HELP works, help doesn't)\n- Stateful: Files persist across commands in same session\n- Binary data support: PUT accepts binary data based on length\n- Revision system: PUT returns revision numbers\n\n## Unknowns/Areas for Further Investigation\n1. Valid filename format - only absolute paths? Specific patterns?\n2. Directory structure - can subdirectories be created?\n3. GET response format - how is file data returned?\n4. File size limits\n5. Session persistence - do files persist across connections?\n6. Revision system - how are revisions used?\n\n## Implementation Notes\n- Server expects exact command format\n- Timeouts occur if improper format sent\n- Connection can become corrupted with malformed requests\n- Single character responses during handshake suggest character-by-character processing initially"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/client.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport sys\n\nclass VCSClient:\n    \"\"\"Client for Voracious Code Storage protocol\"\"\"\n    \n    def __init__(self, host='vcs.protohackers.com', port=30307):\n        self.host = host\n        self.port = port\n        self.sock = None\n    \n    def connect(self):\n        \"\"\"Connect to the VCS server\"\"\"\n        try:\n            self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n            self.sock.settimeout(10)\n            self.sock.connect((self.host, self.port))\n            \n            # Read READY greeting\n            greeting = self._read_line()\n            if greeting.strip() != \"READY\":\n                raise Exception(f\"Unexpected greeting: {greeting}\")\n            \n            print(f\"Connected to {self.host}:{self.port}\")\n            return True\n            \n        except Exception as e:\n            print(f\"Connection failed: {e}\")\n            return False\n    \n    def disconnect(self):\n        \"\"\"Disconnect from server\"\"\"\n        if self.sock:\n            self.sock.close()\n            self.sock = None\n    \n    def _read_line(self):\n        \"\"\"Read a complete line from server\"\"\"\n        line = \"\"\n        while True:\n            char = self.sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def _send_command(self, command):\n        \"\"\"Send command and return response\"\"\"\n        print(f\">>> {command}\")\n        self.sock.send((command + '\\n').encode('ascii'))\n        response = self._read_line()\n        print(f\"<<< {response.rstrip()}\")\n        return response\n    \n    def help(self):\n        \"\"\"Get help information\"\"\"\n        return self._send_command(\"HELP\")\n    \n    def list_directory(self, directory=\"/\"):\n        \"\"\"List files in directory\"\"\"\n        response = self._send_command(f\"LIST {directory}\")\n        \n        if response.startswith(\"OK \"):\n            count = int(response.split()[1])\n            files = []\n            for _ in range(count):\n                filename = self._read_line().rstrip()\n                files.append(filename)\n                print(f\"    {filename}\")\n            return files\n        else:\n            return None\n    \n    def put_file(self, filename, data):\n        \"\"\"Store a file\"\"\"\n        if isinstance(data, str):\n            data = data.encode('ascii')\n        \n        response = self._send_command(f\"PUT {filename} {len(data)}\")\n        \n        if response.startswith(\"OK\"):\n            # Send the data\n            self.sock.send(data)\n            final_response = self._read_line()\n            print(f\"<<< {final_response.rstrip()}\")\n            return final_response\n        else:\n            return response\n    \n    def get_file(self, filename):\n        \"\"\"Retrieve a file\"\"\"\n        response = self._send_command(f\"GET {filename}\")\n        \n        # For GET, we need to handle the response format\n        # This might need adjustment based on actual server behavior\n        if not response.startswith(\"ERR\"):\n            # Read file data - format TBD\n            return response\n        else:\n            return None\n\ndef interactive_client():\n    \"\"\"Interactive client mode\"\"\"\n    client = VCSClient()\n    \n    if not client.connect():\n        return\n    \n    print(\"VCS Client connected. Type 'quit' to exit.\")\n    print(\"Commands: help, list [dir], put <file> <data>, get <file>\")\n    \n    try:\n        while True:\n            try:\n                command = input(\"vcs> \").strip()\n                \n                if not command:\n                    continue\n                \n                if command.lower() == 'quit':\n                    break\n                \n                parts = command.split()\n                cmd = parts[0].lower()\n                \n                if cmd == 'help':\n                    client.help()\n                \n                elif cmd == 'list':\n                    directory = parts[1] if len(parts) > 1 else \"/\"\n                    client.list_directory(directory)\n                \n                elif cmd == 'put':\n                    if len(parts) < 3:\n                        print(\"Usage: put <filename> <data>\")\n                        continue\n                    filename = parts[1]\n                    data = \" \".join(parts[2:])\n                    client.put_file(filename, data)\n                \n                elif cmd == 'get':\n                    if len(parts) < 2:\n                        print(\"Usage: get <filename>\")\n                        continue\n                    filename = parts[1]\n                    result = client.get_file(filename)\n                    if result:\n                        print(f\"File content: {result}\")\n                \n                else:\n                    print(f\"Unknown command: {cmd}\")\n                    \n            except EOFError:\n                break\n            except Exception as e:\n                print(f\"Error: {e}\")\n    \n    finally:\n        client.disconnect()\n        print(\"Disconnected.\")\n\ndef main():\n    \"\"\"Main entry point\"\"\"\n    if len(sys.argv) > 1 and sys.argv[1] == '-i':\n        interactive_client()\n    else:\n        # Demo mode\n        client = VCSClient()\n        if client.connect():\n            print(\"\\n=== Demo Mode ===\")\n            client.help()\n            client.list_directory(\"/\")\n            # Add more demo commands here\n            client.disconnect()\n\nif __name__ == \"__main__\":\n    main()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/debug_list.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef debug_list_command():\n    \"\"\"Debug the LIST command response\"\"\"\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    # Get greeting\n    greeting = sock.recv(1024).decode('ascii')\n    print(f\"Greeting: {repr(greeting)}\")\n    \n    # Send LIST /\n    print(\"\\nSending LIST /\")\n    sock.send(b\"LIST /\\n\")\n    \n    # Read response carefully\n    response_data = b\"\"\n    while True:\n        try:\n            chunk = sock.recv(1024)\n            if not chunk:\n                break\n            response_data += chunk\n            print(f\"Received chunk: {repr(chunk)}\")\n            \n            # Check if we have a complete response\n            decoded = response_data.decode('ascii', errors='replace')\n            if '\\n' in decoded and ('OK' in decoded or 'ERR' in decoded):\n                break\n                \n        except socket.timeout:\n            print(\"Timeout\")\n            break\n    \n    print(f\"Complete response: {repr(response_data.decode('ascii', errors='replace'))}\")\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    debug_list_command()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/final_protocol_test.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef final_protocol_analysis():\n    \"\"\"Final protocol analysis with proper handling\"\"\"\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    print(\"=== Testing correct protocol flow ===\")\n    \n    # The server starts by expecting us to trigger the READY message\n    # We need to send something to get it started\n    print(\"Triggering READY...\")\n    sock.send(b'X')  # Send any character\n    ready = read_line()\n    print(f\"Ready message: {repr(ready)}\")\n    \n    # Now we can send proper commands\n    print(\"\\n=== Sending proper commands ===\")\n    \n    def send_command(cmd):\n        print(f\"Command: {cmd}\")\n        sock.send((cmd + '\\n').encode('ascii'))\n        response = read_line()\n        print(f\"Response: {repr(response)}\")\n        return response\n    \n    # Test commands\n    send_command(\"HELP\")\n    \n    # Test LIST\n    response = send_command(\"LIST /\")\n    if response.startswith(\"OK \"):\n        count = int(response.split()[1])\n        print(f\"Files in directory: {count}\")\n        for i in range(count):\n            filename = read_line()\n            print(f\"  File {i+1}: {repr(filename)}\")\n    \n    # Test file operations - try to find valid filename format\n    print(\"\\n=== Testing file operations ===\")\n    \n    # Try different filename formats\n    test_files = [\n        \"/tmp/test.txt\",\n        \"/var/test.txt\", \n        \"/etc/test.txt\",\n        \"/test.txt\",\n        \"/home/test.txt\"\n    ]\n    \n    for filename in test_files:\n        data = \"hello world\"\n        response = send_command(f\"PUT {filename} {len(data)}\")\n        if response.startswith(\"OK\"):\n            print(f\"PUT succeeded for {filename}, sending data...\")\n            sock.send(data.encode('ascii'))\n            final_resp = read_line()\n            print(f\"Final PUT response: {repr(final_resp)}\")\n            \n            # Try to GET the file back\n            get_resp = send_command(f\"GET {filename}\")\n            print(f\"GET response: {repr(get_resp)}\")\n            break\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    final_protocol_analysis()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/clean_protocol.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport time\n\ndef clean_protocol_test():\n    \"\"\"Clean protocol test without initial trigger\"\"\"\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Wait and see if server sends greeting automatically\n    print(\"Waiting for automatic greeting...\")\n    greeting = read_line()\n    print(f\"Greeting: {repr(greeting)}\")\n    \n    def send_command(cmd):\n        print(f\">>> {cmd}\")\n        sock.send((cmd + '\\n').encode('ascii'))\n        response = read_line()\n        print(f\"<<< {repr(response)}\")\n        return response\n    \n    # Test commands\n    send_command(\"HELP\")\n    send_command(\"LIST /\")\n    \n    sock.close()\n\ndef test_without_waiting():\n    \"\"\"Test by sending commands immediately\"\"\"\n    \n    print(\"\\n=== Test without waiting ===\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    # Send HELP immediately\n    print(\"Sending HELP immediately...\")\n    sock.send(b\"HELP\\n\")\n    \n    # Read all available response data\n    time.sleep(1)  # Give server time to respond\n    \n    all_data = b\"\"\n    while True:\n        try:\n            chunk = sock.recv(1024)\n            if not chunk:\n                break\n            all_data += chunk\n        except socket.timeout:\n            break\n    \n    print(f\"All response data: {repr(all_data.decode('ascii', errors='replace'))}\")\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    clean_protocol_test()\n    test_without_waiting()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/client.py",
  "old_string": "    def list_directory(self, directory=\"/\"):\n        \"\"\"List files in directory\"\"\"\n        response = self._send_command(f\"LIST {directory}\")\n        \n        if response.startswith(\"OK \"):\n            count = int(response.split()[1])\n            files = []\n            for _ in range(count):\n                filename = self._read_line().rstrip()\n                files.append(filename)\n                print(f\"    {filename}\")\n            return files\n        else:\n            return None",
  "new_string": "    def list_directory(self, directory=\"/\"):\n        \"\"\"List files in directory\"\"\"\n        response = self._send_command(f\"LIST {directory}\")\n        \n        if response.startswith(\"OK \"):\n            count = int(response.split()[1])\n            files = []\n            for _ in range(count):\n                filename = self._read_line().rstrip()\n                files.append(filename)\n                print(f\"    {filename}\")\n            return files\n        elif response.strip() == \"READY\":\n            # Empty directory or special response\n            print(\"    (empty or ready)\")\n            return []\n        else:\n            return None"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "content": "#!/usr/bin/env python3\n\nimport asyncio\nimport os\nimport sys\nfrom pathlib import Path\n\nclass VCSServer:\n    \"\"\"Voracious Code Storage Server\"\"\"\n    \n    def __init__(self, host='0.0.0.0', port=8080):\n        self.host = host\n        self.port = port\n        self.files = {}  # filename -> (data, revision)\n        self.revision_counter = 0\n        \n    async def handle_client(self, reader, writer):\n        \"\"\"Handle a client connection\"\"\"\n        client_addr = writer.get_extra_info('peername')\n        print(f\"Client connected: {client_addr}\")\n        \n        try:\n            # Send initial greeting\n            await self.send_response(writer, \"READY\")\n            \n            while True:\n                # Read command\n                line = await reader.readline()\n                if not line:\n                    break\n                \n                command = line.decode('ascii', errors='replace').strip()\n                if not command:\n                    continue\n                \n                print(f\"Command from {client_addr}: {repr(command)}\")\n                \n                # Parse and handle command\n                await self.handle_command(reader, writer, command)\n                \n        except Exception as e:\n            print(f\"Error handling client {client_addr}: {e}\")\n        finally:\n            writer.close()\n            await writer.wait_closed()\n            print(f\"Client disconnected: {client_addr}\")\n    \n    async def send_response(self, writer, response):\n        \"\"\"Send a response to the client\"\"\"\n        response_bytes = (response + '\\n').encode('ascii')\n        writer.write(response_bytes)\n        await writer.drain()\n        print(f\"Response: {repr(response)}\")\n    \n    async def handle_command(self, reader, writer, command):\n        \"\"\"Handle a specific command\"\"\"\n        parts = command.split()\n        if not parts:\n            return\n        \n        cmd = parts[0].upper()\n        \n        if cmd == \"HELP\":\n            await self.handle_help(writer)\n        elif cmd == \"LIST\":\n            await self.handle_list(writer, parts[1:])\n        elif cmd == \"PUT\":\n            await self.handle_put(reader, writer, parts[1:])\n        elif cmd == \"GET\":\n            await self.handle_get(writer, parts[1:])\n        else:\n            await self.send_response(writer, f\"ERR illegal method: {command}\")\n    \n    async def handle_help(self, writer):\n        \"\"\"Handle HELP command\"\"\"\n        await self.send_response(writer, \"OK usage: HELP|GET|PUT|LIST\")\n    \n    async def handle_list(self, writer, args):\n        \"\"\"Handle LIST command\"\"\"\n        if not args:\n            await self.send_response(writer, \"ERR usage: LIST dir\")\n            return\n        \n        directory = args[0]\n        \n        if directory == \"/\":\n            # List all files in root\n            files_in_root = [f for f in self.files.keys() if not f.startswith(\"/\") or f.count(\"/\") == 1]\n            await self.send_response(writer, f\"OK {len(files_in_root)}\")\n            for filename in files_in_root:\n                await self.send_response(writer, filename)\n        else:\n            # For other directories, use limited validation like reference server\n            if self.is_valid_directory(directory):\n                # List files in specific directory\n                prefix = directory if directory.endswith(\"/\") else directory + \"/\"\n                files_in_dir = [f for f in self.files.keys() if f.startswith(prefix) and f != prefix]\n                await self.send_response(writer, f\"OK {len(files_in_dir)}\")\n                for filename in files_in_dir:\n                    await self.send_response(writer, filename)\n            else:\n                await self.send_response(writer, \"ERR illegal dir name\")\n    \n    async def handle_put(self, reader, writer, args):\n        \"\"\"Handle PUT command\"\"\"\n        if len(args) < 2:\n            await self.send_response(writer, \"ERR usage: PUT file length newline data\")\n            return\n        \n        filename = args[0]\n        try:\n            length = int(args[1])\n        except ValueError:\n            await self.send_response(writer, \"ERR usage: PUT file length newline data\")\n            return\n        \n        if not self.is_valid_filename(filename):\n            await self.send_response(writer, \"ERR illegal file name\")\n            return\n        \n        # Read the file data\n        data = await reader.read(length)\n        if len(data) != length:\n            await self.send_response(writer, \"ERR incomplete data\")\n            return\n        \n        # Store the file\n        self.revision_counter += 1\n        self.files[filename] = (data, self.revision_counter)\n        \n        await self.send_response(writer, f\"OK {self.revision_counter}\")\n    \n    async def handle_get(self, writer, args):\n        \"\"\"Handle GET command\"\"\"\n        if not args:\n            await self.send_response(writer, \"ERR usage: GET file\")\n            return\n        \n        filename = args[0]\n        \n        if not self.is_valid_filename(filename):\n            await self.send_response(writer, \"ERR illegal file name\")\n            return\n        \n        if filename not in self.files:\n            await self.send_response(writer, \"ERR no such file\")\n            return\n        \n        data, revision = self.files[filename]\n        \n        # Send file data - format needs to match reference server\n        # Based on reverse engineering, this might be just the raw data\n        writer.write(data)\n        await writer.drain()\n    \n    def is_valid_filename(self, filename):\n        \"\"\"Check if filename is valid\"\"\"\n        # Based on reverse engineering, implement validation logic\n        # For now, be restrictive like the reference server seems to be\n        \n        # Must start with / for absolute path\n        if not filename.startswith(\"/\"):\n            return False\n        \n        # Avoid certain patterns that caused errors\n        if \"//\" in filename or filename.endswith(\"/\"):\n            return False\n        \n        # Must be in certain directories to match reference behavior\n        allowed_prefixes = [\"/tmp/\", \"/var/\", \"/etc/\", \"/home/\", \"/root/\"]\n        if not any(filename.startswith(prefix) for prefix in allowed_prefixes):\n            # Allow root level files too\n            if filename.count(\"/\") != 1:\n                return False\n        \n        return True\n    \n    def is_valid_directory(self, directory):\n        \"\"\"Check if directory name is valid\"\"\"\n        # Based on reverse engineering, only \"/\" seems to be universally valid\n        return directory == \"/\"\n    \n    async def run(self):\n        \"\"\"Run the server\"\"\"\n        server = await asyncio.start_server(\n            self.handle_client, self.host, self.port\n        )\n        \n        addr = server.sockets[0].getsockname()\n        print(f\"VCS Server running on {addr[0]}:{addr[1]}\")\n        \n        async with server:\n            await server.serve_forever()\n\ndef main():\n    \"\"\"Main entry point\"\"\"\n    port = 8080\n    if len(sys.argv) > 1:\n        try:\n            port = int(sys.argv[1])\n        except ValueError:\n            print(f\"Invalid port: {sys.argv[1]}\")\n            sys.exit(1)\n    \n    server = VCSServer(port=port)\n    \n    try:\n        asyncio.run(server.run())\n    except KeyboardInterrupt:\n        print(\"\\nServer stopped.\")\n\nif __name__ == \"__main__\":\n    main()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_server.py",
  "content": "#!/usr/bin/env python3\n\nimport unittest\nimport asyncio\nimport socket\nimport threading\nimport time\nfrom server import VCSServer\n\nclass TestVCSServer(unittest.TestCase):\n    \"\"\"Test the VCS server implementation\"\"\"\n    \n    @classmethod\n    def setUpClass(cls):\n        \"\"\"Start server in background thread\"\"\"\n        cls.server_port = 8888\n        cls.server = VCSServer(port=cls.server_port)\n        \n        # Start server in background\n        def run_server():\n            asyncio.run(cls.server.run())\n        \n        cls.server_thread = threading.Thread(target=run_server, daemon=True)\n        cls.server_thread.start()\n        \n        # Give server time to start\n        time.sleep(0.5)\n    \n    def connect(self):\n        \"\"\"Create connection to test server\"\"\"\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(5)\n        sock.connect(('127.0.0.1', self.server_port))\n        return sock\n    \n    def read_line(self, sock):\n        \"\"\"Read a line from socket\"\"\"\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def send_command(self, sock, command):\n        \"\"\"Send command and get response\"\"\"\n        sock.send((command + '\\n').encode('ascii'))\n        return self.read_line(sock)\n    \n    def test_greeting(self):\n        \"\"\"Test server sends READY greeting\"\"\"\n        sock = self.connect()\n        greeting = self.read_line(sock)\n        self.assertEqual(greeting.strip(), \"READY\")\n        sock.close()\n    \n    def test_help_command(self):\n        \"\"\"Test HELP command\"\"\"\n        sock = self.connect()\n        self.read_line(sock)  # Skip greeting\n        \n        response = self.send_command(sock, \"HELP\")\n        self.assertEqual(response.strip(), \"OK usage: HELP|GET|PUT|LIST\")\n        sock.close()\n    \n    def test_list_empty_root(self):\n        \"\"\"Test LIST / on empty server\"\"\"\n        sock = self.connect()\n        self.read_line(sock)  # Skip greeting\n        \n        response = self.send_command(sock, \"LIST /\")\n        self.assertTrue(response.startswith(\"OK \"))\n        \n        count = int(response.split()[1])\n        self.assertEqual(count, 0)  # Should be empty initially\n        sock.close()\n    \n    def test_invalid_commands(self):\n        \"\"\"Test invalid commands\"\"\"\n        sock = self.connect()\n        self.read_line(sock)  # Skip greeting\n        \n        # Invalid method\n        response = self.send_command(sock, \"INVALID\")\n        self.assertTrue(response.startswith(\"ERR illegal method:\"))\n        \n        # LIST without argument\n        response = self.send_command(sock, \"LIST\")\n        self.assertEqual(response.strip(), \"ERR usage: LIST dir\")\n        \n        # Invalid directory\n        response = self.send_command(sock, \"LIST invalid\")\n        self.assertEqual(response.strip(), \"ERR illegal dir name\")\n        \n        sock.close()\n    \n    def test_put_and_get_file(self):\n        \"\"\"Test PUT and GET operations\"\"\"\n        sock = self.connect()\n        self.read_line(sock)  # Skip greeting\n        \n        # PUT a file\n        filename = \"/tmp/test.txt\"\n        data = \"hello world\"\n        \n        put_response = self.send_command(sock, f\"PUT {filename} {len(data)}\")\n        \n        if put_response.startswith(\"OK\"):\n            # Send data\n            sock.send(data.encode('ascii'))\n            \n            # Test GET\n            get_response = self.send_command(sock, f\"GET {filename}\")\n            # Note: GET response format needs to be verified against reference server\n            \n        sock.close()\n    \n    def test_file_listing(self):\n        \"\"\"Test file listing after adding files\"\"\"\n        sock = self.connect()\n        self.read_line(sock)  # Skip greeting\n        \n        # Add a file first\n        filename = \"/tmp/testfile\"\n        data = \"test data\"\n        \n        put_response = self.send_command(sock, f\"PUT {filename} {len(data)}\")\n        \n        if put_response.startswith(\"OK\"):\n            sock.send(data.encode('ascii'))\n            \n            # List files\n            list_response = self.send_command(sock, \"LIST /\")\n            self.assertTrue(list_response.startswith(\"OK \"))\n            \n            count = int(list_response.split()[1])\n            self.assertGreater(count, 0)\n            \n            # Read filenames\n            for _ in range(count):\n                filename_line = self.read_line(sock)\n                print(f\"Listed file: {filename_line.strip()}\")\n        \n        sock.close()\n\ndef compare_with_reference():\n    \"\"\"Compare our server behavior with reference server\"\"\"\n    print(\"=== Comparing with reference server ===\")\n    \n    # Test reference server\n    print(\"\\n--- Reference server responses ---\")\n    ref_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    ref_sock.settimeout(10)\n    ref_sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def send_command(sock, command):\n        print(f\">>> {command}\")\n        sock.send((command + '\\n').encode('ascii'))\n        response = read_line(sock)\n        print(f\"<<< {repr(response)}\")\n        return response\n    \n    # Test reference\n    ref_greeting = read_line(ref_sock)\n    print(f\"Ref greeting: {repr(ref_greeting)}\")\n    \n    send_command(ref_sock, \"HELP\")\n    send_command(ref_sock, \"LIST /\")\n    \n    ref_sock.close()\n    \n    # Test our server\n    print(\"\\n--- Our server responses ---\")\n    our_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    our_sock.settimeout(5)\n    \n    try:\n        our_sock.connect(('127.0.0.1', 8888))\n        \n        our_greeting = read_line(our_sock)\n        print(f\"Our greeting: {repr(our_greeting)}\")\n        \n        send_command(our_sock, \"HELP\")\n        send_command(our_sock, \"LIST /\")\n        \n        our_sock.close()\n    except Exception as e:\n        print(f\"Error connecting to our server: {e}\")\n\nif __name__ == '__main__':\n    # Run comparison first\n    compare_with_reference()\n    \n    print(\"\\n\" + \"=\"*50)\n    print(\"Running unit tests...\")\n    print(\"=\"*50)\n    \n    unittest.main()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/debug_server.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport time\n\ndef debug_our_server():\n    \"\"\"Debug our server to see what's happening with PUT\"\"\"\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    \n    try:\n        sock.connect(('127.0.0.1', 8888))\n        print(\"Connected to our server\")\n    except Exception as e:\n        print(f\"Can't connect: {e}\")\n        return\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Get greeting\n    greeting = read_line()\n    print(f\"Greeting: {repr(greeting)}\")\n    \n    # Try PUT command\n    filename = \"/tmp/debug.txt\"\n    data = \"hello\"\n    \n    print(f\"Sending PUT command...\")\n    sock.send(f\"PUT {filename} {len(data)}\\n\".encode('ascii'))\n    \n    # Try to read response\n    print(\"Waiting for PUT response...\")\n    try:\n        response = read_line()\n        print(f\"PUT response: {repr(response)}\")\n        \n        if response.startswith(\"OK\"):\n            print(f\"Sending data: {repr(data)}\")\n            sock.send(data.encode('ascii'))\n            \n            print(\"Waiting for final response...\")\n            final_resp = read_line()\n            print(f\"Final response: {repr(final_resp)}\")\n            \n    except socket.timeout:\n        print(\"Timeout waiting for response\")\n    \n    sock.close()\n\ndef test_reference_put():\n    \"\"\"Test PUT on reference server to understand format\"\"\"\n    print(\"\\n=== Testing PUT on reference server ===\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Get greeting\n    greeting = read_line()\n    print(f\"Ref greeting: {repr(greeting)}\")\n    \n    # Try PUT with different filenames to find valid format\n    test_files = [\"/tmp/test\", \"/var/test\", \"/etc/test\", \"/home/test\", \"/test\"]\n    \n    for filename in test_files:\n        try:\n            print(f\"\\nTrying filename: {filename}\")\n            data = \"hello\"\n            \n            sock.send(f\"PUT {filename} {len(data)}\\n\".encode('ascii'))\n            response = read_line()\n            print(f\"PUT response: {repr(response)}\")\n            \n            if response.startswith(\"OK\"):\n                print(\"Success! Sending data...\")\n                sock.send(data.encode('ascii'))\n                \n                final_resp = read_line()\n                print(f\"Final response: {repr(final_resp)}\")\n                break\n        except Exception as e:\n            print(f\"Error with {filename}: {e}\")\n            break\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    debug_our_server()\n    test_reference_put()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/find_valid_filenames.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport time\n\ndef find_valid_filename_format():\n    \"\"\"Systematically find valid filename formats\"\"\"\n    \n    def test_filename(filename):\n        \"\"\"Test if a filename is valid\"\"\"\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(5)\n        sock.connect(('vcs.protohackers.com', 30307))\n        \n        def read_line():\n            line = \"\"\n            while True:\n                char = sock.recv(1).decode('ascii', errors='replace')\n                if not char:\n                    break\n                line += char\n                if char == '\\n':\n                    break\n            return line\n        \n        try:\n            # Skip greeting\n            read_line()\n            \n            # Test GET first (safer than PUT)\n            sock.send(f\"GET {filename}\\n\".encode('ascii'))\n            response = read_line()\n            \n            sock.close()\n            \n            if \"illegal file name\" in response:\n                return False\n            elif \"no such file\" in response:\n                return True  # Valid filename, just doesn't exist\n            else:\n                return True  # Some other response, but filename is valid\n                \n        except Exception as e:\n            sock.close()\n            return False\n    \n    # Test various filename patterns\n    patterns_to_test = [\n        # Simple patterns\n        \"test\",\n        \"file\",\n        \"data\",\n        \n        # Absolute paths\n        \"/test\",\n        \"/file\", \n        \"/data\",\n        \n        # Various directories  \n        \"/tmp/test\",\n        \"/var/test\",\n        \"/etc/test\",\n        \"/home/test\",\n        \"/root/test\",\n        \"/usr/test\",\n        \"/bin/test\",\n        \n        # With extensions\n        \"/tmp/test.txt\",\n        \"/var/data.dat\",\n        \"/etc/config.cfg\",\n        \n        # Different lengths\n        \"/a\",\n        \"/ab\",\n        \"/abc\",\n        \"/abcd\",\n        \n        # Numbers\n        \"/1\",\n        \"/123\", \n        \"/tmp/1\",\n        \"/var/123\",\n    ]\n    \n    print(\"Testing filename patterns...\")\n    valid_filenames = []\n    \n    for pattern in patterns_to_test:\n        print(f\"Testing: {pattern}\")\n        if test_filename(pattern):\n            print(f\"  \u2713 VALID: {pattern}\")\n            valid_filenames.append(pattern)\n        else:\n            print(f\"  \u2717 Invalid: {pattern}\")\n        \n        time.sleep(0.1)  # Be nice to the server\n    \n    print(f\"\\nValid filename patterns found:\")\n    for filename in valid_filenames:\n        print(f\"  {filename}\")\n    \n    return valid_filenames\n\nif __name__ == \"__main__\":\n    valid_filenames = find_valid_filename_format()\n    \n    if valid_filenames:\n        print(f\"\\nTesting PUT with first valid filename: {valid_filenames[0]}\")\n        \n        # Test PUT with the first valid filename\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('vcs.protohackers.com', 30307))\n        \n        def read_line():\n            line = \"\"\n            while True:\n                char = sock.recv(1).decode('ascii', errors='replace')\n                if not char:\n                    break\n                line += char\n                if char == '\\n':\n                    break\n            return line\n        \n        # Skip greeting\n        read_line()\n        \n        filename = valid_filenames[0]\n        data = \"hello\"\n        \n        print(f\"PUT {filename} {len(data)}\")\n        sock.send(f\"PUT {filename} {len(data)}\\n\".encode('ascii'))\n        response = read_line()\n        print(f\"Response: {repr(response)}\")\n        \n        if response.startswith(\"OK\"):\n            print(\"Sending data...\")\n            sock.send(data.encode('ascii'))\n            \n            try:\n                final_resp = read_line()\n                print(f\"Final response: {repr(final_resp)}\")\n            except socket.timeout:\n                print(\"No final response\")\n        \n        sock.close()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "**File naming constraints:**\n- Specific format required (exact rules unclear from testing)\n- Simple names like \"test\", \"file1\" appear invalid\n- Absolute paths may be required",
  "new_string": "**File naming constraints:**\n- MUST be absolute paths starting with \"/\"\n- Examples of valid filenames: /test, /file, /tmp/test.txt, /var/data.dat, /etc/config.cfg\n- Simple names without leading \"/\" are invalid\n- Any absolute path seems to be accepted (/, /tmp/, /var/, /etc/, /home/, etc.)"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/investigate_put_response.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport time\n\ndef investigate_put_response():\n    \"\"\"Investigate the exact PUT response format\"\"\"\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(15)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Get greeting\n    greeting = read_line()\n    print(f\"Greeting: {repr(greeting)}\")\n    \n    # Try PUT with a simple file\n    filename = \"/test.txt\"\n    data = \"hello\"\n    \n    print(f\"\\nSending: PUT {filename} {len(data)}\")\n    sock.send(f\"PUT {filename} {len(data)}\\n\".encode('ascii'))\n    \n    # Read the immediate response\n    immediate_response = read_line()\n    print(f\"Immediate response: {repr(immediate_response)}\")\n    \n    # If OK, send the data\n    if immediate_response.startswith(\"OK\"):\n        print(f\"Sending data: {repr(data)}\")\n        sock.send(data.encode('ascii'))\n        \n        # Try to read any additional response\n        print(\"Waiting for final response...\")\n        try:\n            final_response = read_line()\n            print(f\"Final response: {repr(final_response)}\")\n        except socket.timeout:\n            print(\"No final response (timeout)\")\n    \n    # Test GET to see the response format\n    print(f\"\\nTesting GET {filename}\")\n    sock.send(f\"GET {filename}\\n\".encode('ascii'))\n    get_response = read_line()\n    print(f\"GET response: {repr(get_response)}\")\n    \n    sock.close()\n\ndef test_put_without_data():\n    \"\"\"Test what happens if we send PUT but don't send data\"\"\"\n    \n    print(\"\\n=== Testing PUT without sending data ===\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Skip greeting\n    read_line()\n    \n    # Send PUT command but don't send data\n    print(\"Sending PUT command without data...\")\n    sock.send(b\"PUT /test2.txt 5\\n\")\n    \n    response = read_line()\n    print(f\"Response: {repr(response)}\")\n    \n    sock.close()\n\ndef test_multiple_puts():\n    \"\"\"Test multiple PUT operations to understand the pattern\"\"\"\n    \n    print(\"\\n=== Testing multiple PUTs ===\")\n    \n    for i in range(3):\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('vcs.protohackers.com', 30307))\n        \n        def read_line():\n            line = \"\"\n            while True:\n                char = sock.recv(1).decode('ascii', errors='replace')\n                if not char:\n                    break\n                line += char\n                if char == '\\n':\n                    break\n            return line\n        \n        # Skip greeting\n        read_line()\n        \n        filename = f\"/test{i}.txt\"\n        data = f\"data{i}\"\n        \n        print(f\"\\nTesting PUT {filename}\")\n        sock.send(f\"PUT {filename} {len(data)}\\n\".encode('ascii'))\n        \n        response = read_line()\n        print(f\"PUT response: {repr(response)}\")\n        \n        if response.strip() == \"OK\":  # Just \"OK\" without number?\n            print(f\"Sending data: {repr(data)}\")\n            sock.send(data.encode('ascii'))\n            \n            try:\n                final_response = read_line()\n                print(f\"Final response: {repr(final_response)}\")\n            except socket.timeout:\n                print(\"No final response\")\n        \n        sock.close()\n        time.sleep(0.5)\n\nif __name__ == \"__main__\":\n    investigate_put_response()\n    test_put_without_data()\n    test_multiple_puts()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_put_format.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_put_immediate_data():\n    \"\"\"Test sending PUT with data immediately\"\"\"\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Skip greeting\n    greeting = read_line()\n    print(f\"Greeting: {repr(greeting)}\")\n    \n    # Test: Send PUT command and data in one message\n    filename = \"/test1.txt\"\n    data = \"hello\"\n    \n    print(f\"Sending PUT with immediate data...\")\n    message = f\"PUT {filename} {len(data)}\\n{data}\"\n    print(f\"Message: {repr(message)}\")\n    \n    sock.send(message.encode('ascii'))\n    \n    response = read_line()\n    print(f\"Response: {repr(response)}\")\n    \n    # Test GET to verify\n    print(f\"Testing GET...\")\n    sock.send(f\"GET {filename}\\n\".encode('ascii'))\n    get_response = read_line()\n    print(f\"GET response: {repr(get_response)}\")\n    \n    sock.close()\n\ndef test_put_separate_messages():\n    \"\"\"Test sending PUT command and data as separate messages\"\"\"\n    \n    print(\"\\n=== Testing separate messages ===\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Skip greeting\n    read_line()\n    \n    filename = \"/test2.txt\"\n    data = \"world\"\n    \n    print(f\"Sending PUT command first...\")\n    sock.send(f\"PUT {filename} {len(data)}\\n\".encode('ascii'))\n    \n    print(f\"Immediately sending data...\")\n    sock.send(data.encode('ascii'))\n    \n    # Now try to read response\n    response = read_line()\n    print(f\"Response: {repr(response)}\")\n    \n    sock.close()\n\ndef test_zero_length_file():\n    \"\"\"Test PUT with zero-length file\"\"\"\n    \n    print(\"\\n=== Testing zero-length file ===\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Skip greeting\n    read_line()\n    \n    filename = \"/empty.txt\"\n    \n    print(f\"Sending PUT with 0 length...\")\n    sock.send(f\"PUT {filename} 0\\n\".encode('ascii'))\n    \n    response = read_line()\n    print(f\"Response: {repr(response)}\")\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    test_put_immediate_data()\n    test_put_separate_messages()\n    test_zero_length_file()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        # Store the file\n        self.revision_counter += 1\n        self.files[filename] = (data, self.revision_counter)\n        \n        await self.send_response(writer, f\"OK {self.revision_counter}\")",
  "new_string": "        # Store the file\n        self.revision_counter += 1\n        self.files[filename] = (data, self.revision_counter)\n        \n        await self.send_response(writer, f\"OK r{self.revision_counter}\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_get_format.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_get_response():\n    \"\"\"Test GET response format\"\"\"\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Skip greeting\n    read_line()\n    \n    # First PUT a file\n    filename = \"/gettest.txt\" \n    data = \"test content for get\"\n    \n    print(f\"Storing file {filename} with data: {repr(data)}\")\n    put_message = f\"PUT {filename} {len(data)}\\n{data}\"\n    sock.send(put_message.encode('ascii'))\n    \n    put_response = read_line()\n    print(f\"PUT response: {repr(put_response)}\")\n    \n    # Now GET the file\n    print(f\"Getting file {filename}\")\n    sock.send(f\"GET {filename}\\n\".encode('ascii'))\n    \n    # Read the GET response - might be multiple lines\n    print(\"Reading GET response...\")\n    \n    try:\n        # Read first line\n        first_line = read_line()\n        print(f\"First line: {repr(first_line)}\")\n        \n        # If it starts with OK, there might be more data\n        if first_line.startswith(\"OK\"):\n            parts = first_line.split()\n            if len(parts) >= 2:\n                length = int(parts[1])\n                print(f\"Expected data length: {length}\")\n                \n                # Read the data\n                data_received = sock.recv(length)\n                print(f\"Data received: {repr(data_received)}\")\n        \n        # Try to read any additional response\n        try:\n            additional = read_line()\n            print(f\"Additional response: {repr(additional)}\")\n        except socket.timeout:\n            print(\"No additional response\")\n            \n    except Exception as e:\n        print(f\"Error reading GET response: {e}\")\n    \n    sock.close()\n\ndef test_get_nonexistent():\n    \"\"\"Test GET for non-existent file\"\"\"\n    \n    print(\"\\n=== Testing GET for non-existent file ===\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Skip greeting\n    read_line()\n    \n    # GET non-existent file\n    sock.send(b\"GET /nonexistent.txt\\n\")\n    \n    response = read_line()\n    print(f\"GET non-existent response: {repr(response)}\")\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    test_get_response()\n    test_get_nonexistent()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/detailed_get_test.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef detailed_get_test():\n    \"\"\"Detailed test of GET response\"\"\"\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Skip greeting  \n    read_line()\n    \n    # PUT a known file\n    filename = \"/detailed.txt\"\n    data = \"hello world\"\n    \n    print(f\"Storing: {repr(data)} ({len(data)} bytes)\")\n    sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n    \n    put_response = read_line()\n    print(f\"PUT response: {repr(put_response)}\")\n    \n    # GET the file and read everything carefully\n    print(f\"\\nGetting file...\")\n    sock.send(f\"GET {filename}\\n\".encode('ascii'))\n    \n    # Read all data systematically\n    all_data = b\"\"\n    line_count = 0\n    \n    while line_count < 5:  # Safety limit\n        try:\n            line = read_line()\n            print(f\"Line {line_count + 1}: {repr(line)}\")\n            \n            if line.startswith(\"OK \"):\n                # Parse length and read data\n                length = int(line.split()[1])\n                print(f\"Reading {length} bytes of data...\")\n                \n                file_data = sock.recv(length)\n                print(f\"File data: {repr(file_data)}\")\n                print(f\"File data decoded: {repr(file_data.decode('ascii', errors='replace'))}\")\n                break\n            \n            line_count += 1\n            \n        except socket.timeout:\n            print(\"Timeout\")\n            break\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    detailed_get_test()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/correct_get_test.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef correct_get_test():\n    \"\"\"Correctly read GET response\"\"\"\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(length):\n        \"\"\"Read exact number of bytes\"\"\"\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    # Skip greeting\n    read_line()\n    \n    # PUT a test file\n    filename = \"/correct.txt\"\n    data = \"hello world test\"\n    \n    print(f\"Storing: {repr(data)} ({len(data)} bytes)\")\n    sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n    \n    put_response = read_line()\n    print(f\"PUT response: {repr(put_response)}\")\n    \n    # GET the file\n    print(f\"\\nGetting file...\")\n    sock.send(f\"GET {filename}\\n\".encode('ascii'))\n    \n    # Read first response line\n    first_line = read_line()\n    print(f\"First line: {repr(first_line)}\")\n    \n    # Read second response line  \n    second_line = read_line()\n    print(f\"Second line: {repr(second_line)}\")\n    \n    if second_line.startswith(\"OK \"):\n        length = int(second_line.split()[1])\n        print(f\"Reading {length} bytes of file data...\")\n        \n        file_data = read_bytes(length)\n        print(f\"File data: {repr(file_data)}\")\n        print(f\"File content: {file_data.decode('ascii', errors='replace')}\")\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    correct_get_test()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        data, revision = self.files[filename]\n        \n        # Send file data - format needs to match reference server\n        # Based on reverse engineering, this might be just the raw data\n        writer.write(data)\n        await writer.drain()",
  "new_string": "        data, revision = self.files[filename]\n        \n        # Send GET response in correct format:\n        # 1. READY\n        # 2. OK <length>  \n        # 3. <raw data>\n        await self.send_response(writer, \"READY\")\n        await self.send_response(writer, f\"OK {len(data)}\")\n        writer.write(data)\n        await writer.drain()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_list_with_files.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_list_with_files():\n    \"\"\"Test LIST after adding some files\"\"\"\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Skip greeting\n    read_line()\n    \n    # Add some files\n    files_to_add = [\n        (\"/file1.txt\", \"data1\"),\n        (\"/file2.txt\", \"data2\"), \n        (\"/tmp/file3.txt\", \"data3\")\n    ]\n    \n    for filename, data in files_to_add:\n        print(f\"Adding {filename}...\")\n        sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n        \n        response = read_line()\n        print(f\"PUT response: {repr(response)}\")\n    \n    # Now test LIST\n    print(f\"\\nTesting LIST /\")\n    sock.send(b\"LIST /\\n\")\n    \n    first_response = read_line()\n    print(f\"LIST response: {repr(first_response)}\")\n    \n    if first_response.startswith(\"OK \"):\n        count = int(first_response.split()[1])\n        print(f\"Files listed: {count}\")\n        \n        for i in range(count):\n            filename = read_line()\n            print(f\"File {i+1}: {repr(filename)}\")\n    elif first_response.strip() == \"READY\":\n        print(\"LIST returned READY (empty or special case)\")\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    test_list_with_files()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_persistence.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport time\n\ndef test_file_persistence():\n    \"\"\"Test if files persist across connections\"\"\"\n    \n    # First connection - add a file\n    print(\"=== First connection - adding file ===\")\n    sock1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock1.settimeout(10)\n    sock1.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Skip greeting\n    read_line(sock1)\n    \n    # Add a file\n    filename = \"/persist.txt\"\n    data = \"persistent data\"\n    \n    sock1.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n    put_response = read_line(sock1)\n    print(f\"PUT response: {repr(put_response)}\")\n    \n    sock1.close()\n    \n    # Second connection - try to retrieve the file\n    print(\"\\n=== Second connection - retrieving file ===\")\n    time.sleep(0.5)  # Small delay\n    \n    sock2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock2.settimeout(10)\n    sock2.connect(('vcs.protohackers.com', 30307))\n    \n    # Skip greeting\n    read_line(sock2)\n    \n    # Try to GET the file\n    sock2.send(f\"GET {filename}\\n\".encode('ascii'))\n    \n    first_line = read_line(sock2)\n    print(f\"GET first line: {repr(first_line)}\")\n    \n    if first_line.strip() == \"READY\":\n        second_line = read_line(sock2)\n        print(f\"GET second line: {repr(second_line)}\")\n        \n        if second_line.startswith(\"OK \"):\n            length = int(second_line.split()[1])\n            file_data = sock2.recv(length)\n            print(f\"File data retrieved: {repr(file_data.decode('ascii'))}\")\n            print(\"\u2713 File persisted across connections!\")\n        else:\n            print(\"File not found or error\")\n    elif \"no such file\" in first_line:\n        print(\"\u2717 File did not persist\")\n    \n    sock2.close()\n\ndef test_same_connection_list():\n    \"\"\"Test LIST on same connection after adding files\"\"\"\n    \n    print(\"\\n=== Testing LIST on same connection ===\")\n    \n    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock.settimeout(10)\n    sock.connect(('vcs.protohackers.com', 30307))\n    \n    def read_line():\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    # Skip greeting\n    read_line()\n    \n    # Add a file\n    filename = \"/listtest.txt\"\n    data = \"test\"\n    \n    print(f\"Adding file {filename}\")\n    sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n    put_response = read_line()\n    print(f\"PUT response: {repr(put_response)}\")\n    \n    # Immediately test LIST\n    print(\"Testing LIST immediately after PUT\")\n    sock.send(b\"LIST /\\n\")\n    list_response = read_line()\n    print(f\"LIST response: {repr(list_response)}\")\n    \n    # Try GET to verify file exists\n    print(\"Testing GET to verify file exists\")\n    sock.send(f\"GET {filename}\\n\".encode('ascii'))\n    get_response = read_line()\n    print(f\"GET response: {repr(get_response)}\")\n    \n    sock.close()\n\nif __name__ == \"__main__\":\n    test_file_persistence()\n    test_same_connection_list()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "## Protocol Characteristics\n- Line-based: Each command/response ends with \\n\n- Case-sensitive commands (HELP works, help doesn't)\n- Stateful: Files persist across commands in same session\n- Binary data support: PUT accepts binary data based on length\n- Revision system: PUT returns revision numbers",
  "new_string": "## Protocol Characteristics\n- Line-based: Each command/response ends with \\n\n- Case-sensitive commands (HELP works, help doesn't)\n- Session-only storage: Files persist only within a single connection, NOT across connections\n- Binary data support: PUT accepts binary data based on length\n- Revision system: PUT returns revision numbers (format: \"OK r<number>\")\n- LIST behavior: Always returns \"READY\\n\" regardless of files present"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "**Response:** \n- Success: `OK <count>\\n` followed by <count> lines of filenames\n- Error: `ERR usage: LIST dir\\n` (if no directory specified)\n- Error: `ERR illegal dir name\\n` (if invalid directory)\n\n**Valid directories:** \n- \"/\" (root directory) - only confirmed valid directory\n- Other directories appear to be restricted\n\n**Example:**\n```\nLIST /\nOK 0\n\n```",
  "new_string": "**Response:** \n- Always: `READY\\n` (regardless of files present)\n- Error: `ERR usage: LIST dir\\n` (if no directory specified)\n- Error: `ERR illegal dir name\\n` (if invalid directory)\n\n**Valid directories:** \n- \"/\" (root directory) - only confirmed valid directory\n- Other directories appear to be restricted\n\n**Note:** LIST does not actually enumerate files, it just returns readiness status\n\n**Example:**\n```\nLIST /\nREADY\n\n```"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "class VCSServer:\n    \"\"\"Voracious Code Storage Server\"\"\"\n    \n    def __init__(self, host='0.0.0.0', port=8080):\n        self.host = host\n        self.port = port\n        self.files = {}  # filename -> (data, revision)\n        self.revision_counter = 0",
  "new_string": "class VCSServer:\n    \"\"\"Voracious Code Storage Server\"\"\"\n    \n    def __init__(self, host='0.0.0.0', port=8080):\n        self.host = host\n        self.port = port"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "    async def handle_client(self, reader, writer):\n        \"\"\"Handle a client connection\"\"\"\n        client_addr = writer.get_extra_info('peername')\n        print(f\"Client connected: {client_addr}\")\n        \n        try:\n            # Send initial greeting\n            await self.send_response(writer, \"READY\")\n            \n            while True:\n                # Read command\n                line = await reader.readline()\n                if not line:\n                    break\n                \n                command = line.decode('ascii', errors='replace').strip()\n                if not command:\n                    continue\n                \n                print(f\"Command from {client_addr}: {repr(command)}\")\n                \n                # Parse and handle command\n                await self.handle_command(reader, writer, command)\n                \n        except Exception as e:\n            print(f\"Error handling client {client_addr}: {e}\")\n        finally:\n            writer.close()\n            await writer.wait_closed()\n            print(f\"Client disconnected: {client_addr}\")",
  "new_string": "    async def handle_client(self, reader, writer):\n        \"\"\"Handle a client connection\"\"\"\n        client_addr = writer.get_extra_info('peername')\n        print(f\"Client connected: {client_addr}\")\n        \n        # Each client gets its own file storage\n        files = {}  # filename -> (data, revision)\n        revision_counter = 0\n        \n        try:\n            # Send initial greeting\n            await self.send_response(writer, \"READY\")\n            \n            while True:\n                # Read command\n                line = await reader.readline()\n                if not line:\n                    break\n                \n                command = line.decode('ascii', errors='replace').strip()\n                if not command:\n                    continue\n                \n                print(f\"Command from {client_addr}: {repr(command)}\")\n                \n                # Parse and handle command\n                await self.handle_command(reader, writer, command, files, revision_counter)\n                \n        except Exception as e:\n            print(f\"Error handling client {client_addr}: {e}\")\n        finally:\n            writer.close()\n            await writer.wait_closed()\n            print(f\"Client disconnected: {client_addr}\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "    async def handle_command(self, reader, writer, command):\n        \"\"\"Handle a specific command\"\"\"\n        parts = command.split()\n        if not parts:\n            return\n        \n        cmd = parts[0].upper()\n        \n        if cmd == \"HELP\":\n            await self.handle_help(writer)\n        elif cmd == \"LIST\":\n            await self.handle_list(writer, parts[1:])\n        elif cmd == \"PUT\":\n            await self.handle_put(reader, writer, parts[1:])\n        elif cmd == \"GET\":\n            await self.handle_get(writer, parts[1:])\n        else:\n            await self.send_response(writer, f\"ERR illegal method: {command}\")",
  "new_string": "    async def handle_command(self, reader, writer, command, files, revision_counter):\n        \"\"\"Handle a specific command\"\"\"\n        parts = command.split()\n        if not parts:\n            return\n        \n        cmd = parts[0].upper()\n        \n        if cmd == \"HELP\":\n            await self.handle_help(writer)\n        elif cmd == \"LIST\":\n            await self.handle_list(writer, parts[1:], files)\n        elif cmd == \"PUT\":\n            revision_counter = await self.handle_put(reader, writer, parts[1:], files, revision_counter)\n        elif cmd == \"GET\":\n            await self.handle_get(writer, parts[1:], files)\n        else:\n            await self.send_response(writer, f\"ERR illegal method: {command}\")\n        \n        return revision_counter"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "    async def handle_list(self, writer, args):\n        \"\"\"Handle LIST command\"\"\"\n        if not args:\n            await self.send_response(writer, \"ERR usage: LIST dir\")\n            return\n        \n        directory = args[0]\n        \n        if directory == \"/\":\n            # List all files in root\n            files_in_root = [f for f in self.files.keys() if not f.startswith(\"/\") or f.count(\"/\") == 1]\n            await self.send_response(writer, f\"OK {len(files_in_root)}\")\n            for filename in files_in_root:\n                await self.send_response(writer, filename)\n        else:\n            # For other directories, use limited validation like reference server\n            if self.is_valid_directory(directory):\n                # List files in specific directory\n                prefix = directory if directory.endswith(\"/\") else directory + \"/\"\n                files_in_dir = [f for f in self.files.keys() if f.startswith(prefix) and f != prefix]\n                await self.send_response(writer, f\"OK {len(files_in_dir)}\")\n                for filename in files_in_dir:\n                    await self.send_response(writer, filename)\n            else:\n                await self.send_response(writer, \"ERR illegal dir name\")",
  "new_string": "    async def handle_list(self, writer, args, files):\n        \"\"\"Handle LIST command\"\"\"\n        if not args:\n            await self.send_response(writer, \"ERR usage: LIST dir\")\n            return\n        \n        directory = args[0]\n        \n        if directory == \"/\":\n            # Always return READY regardless of files present\n            await self.send_response(writer, \"READY\")\n        else:\n            # For other directories, return error like reference server\n            await self.send_response(writer, \"ERR illegal dir name\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "    async def handle_put(self, reader, writer, args):\n        \"\"\"Handle PUT command\"\"\"\n        if len(args) < 2:\n            await self.send_response(writer, \"ERR usage: PUT file length newline data\")\n            return\n        \n        filename = args[0]\n        try:\n            length = int(args[1])\n        except ValueError:\n            await self.send_response(writer, \"ERR usage: PUT file length newline data\")\n            return\n        \n        if not self.is_valid_filename(filename):\n            await self.send_response(writer, \"ERR illegal file name\")\n            return\n        \n        # Read the file data\n        data = await reader.read(length)\n        if len(data) != length:\n            await self.send_response(writer, \"ERR incomplete data\")\n            return\n        \n        # Store the file\n        self.revision_counter += 1\n        self.files[filename] = (data, self.revision_counter)\n        \n        await self.send_response(writer, f\"OK r{self.revision_counter}\")",
  "new_string": "    async def handle_put(self, reader, writer, args, files, revision_counter):\n        \"\"\"Handle PUT command\"\"\"\n        if len(args) < 2:\n            await self.send_response(writer, \"ERR usage: PUT file length newline data\")\n            return revision_counter\n        \n        filename = args[0]\n        try:\n            length = int(args[1])\n        except ValueError:\n            await self.send_response(writer, \"ERR usage: PUT file length newline data\")\n            return revision_counter\n        \n        if not self.is_valid_filename(filename):\n            await self.send_response(writer, \"ERR illegal file name\")\n            return revision_counter\n        \n        # Read the file data\n        data = await reader.read(length)\n        if len(data) != length:\n            await self.send_response(writer, \"ERR incomplete data\")\n            return revision_counter\n        \n        # Store the file\n        revision_counter += 1\n        files[filename] = (data, revision_counter)\n        \n        await self.send_response(writer, f\"OK r{revision_counter}\")\n        return revision_counter"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "    async def handle_get(self, writer, args):\n        \"\"\"Handle GET command\"\"\"\n        if not args:\n            await self.send_response(writer, \"ERR usage: GET file\")\n            return\n        \n        filename = args[0]\n        \n        if not self.is_valid_filename(filename):\n            await self.send_response(writer, \"ERR illegal file name\")\n            return\n        \n        if filename not in self.files:\n            await self.send_response(writer, \"ERR no such file\")\n            return\n        \n        data, revision = self.files[filename]\n        \n        # Send GET response in correct format:\n        # 1. READY\n        # 2. OK <length>  \n        # 3. <raw data>\n        await self.send_response(writer, \"READY\")\n        await self.send_response(writer, f\"OK {len(data)}\")\n        writer.write(data)\n        await writer.drain()",
  "new_string": "    async def handle_get(self, writer, args, files):\n        \"\"\"Handle GET command\"\"\"\n        if not args:\n            await self.send_response(writer, \"ERR usage: GET file\")\n            return\n        \n        filename = args[0]\n        \n        if not self.is_valid_filename(filename):\n            await self.send_response(writer, \"ERR illegal file name\")\n            return\n        \n        if filename not in files:\n            await self.send_response(writer, \"ERR no such file\")\n            return\n        \n        data, revision = files[filename]\n        \n        # Send GET response in correct format:\n        # 1. READY\n        # 2. OK <length>  \n        # 3. <raw data>\n        await self.send_response(writer, \"READY\")\n        await self.send_response(writer, f\"OK {len(data)}\")\n        writer.write(data)\n        await writer.drain()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "class VCSServer:\n    \"\"\"Voracious Code Storage Server\"\"\"\n    \n    def __init__(self, host='0.0.0.0', port=8080):\n        self.host = host\n        self.port = port",
  "new_string": "class VCSServer:\n    \"\"\"Voracious Code Storage Server\"\"\"\n    \n    def __init__(self, host='0.0.0.0', port=8080):\n        self.host = host\n        self.port = port\n        self.files = {}  # Shared persistent storage across all sessions\n        self.revision_counter = 0\n        self.lock = asyncio.Lock()  # For thread-safe access"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "    async def handle_client(self, reader, writer):\n        \"\"\"Handle a client connection\"\"\"\n        client_addr = writer.get_extra_info('peername')\n        print(f\"Client connected: {client_addr}\")\n        \n        # Each client gets its own file storage\n        files = {}  # filename -> (data, revision)\n        revision_counter = 0\n        \n        try:\n            # Send initial greeting\n            await self.send_response(writer, \"READY\")\n            \n            while True:\n                # Read command\n                line = await reader.readline()\n                if not line:\n                    break\n                \n                command = line.decode('ascii', errors='replace').strip()\n                if not command:\n                    continue\n                \n                print(f\"Command from {client_addr}: {repr(command)}\")\n                \n                # Parse and handle command\n                await self.handle_command(reader, writer, command, files, revision_counter)\n                \n        except Exception as e:\n            print(f\"Error handling client {client_addr}: {e}\")\n        finally:\n            writer.close()\n            await writer.wait_closed()\n            print(f\"Client disconnected: {client_addr}\")",
  "new_string": "    async def handle_client(self, reader, writer):\n        \"\"\"Handle a client connection\"\"\"\n        client_addr = writer.get_extra_info('peername')\n        print(f\"Client connected: {client_addr}\")\n        \n        try:\n            # Send initial greeting\n            await self.send_response(writer, \"READY\")\n            \n            while True:\n                # Read command\n                line = await reader.readline()\n                if not line:\n                    break\n                \n                command = line.decode('ascii', errors='replace').strip()\n                if not command:\n                    continue\n                \n                print(f\"Command from {client_addr}: {repr(command)}\")\n                \n                # Parse and handle command\n                await self.handle_command(reader, writer, command)\n                \n        except Exception as e:\n            print(f\"Error handling client {client_addr}: {e}\")\n        finally:\n            writer.close()\n            await writer.wait_closed()\n            print(f\"Client disconnected: {client_addr}\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "    async def handle_command(self, reader, writer, command, files, revision_counter):\n        \"\"\"Handle a specific command\"\"\"\n        parts = command.split()\n        if not parts:\n            return\n        \n        cmd = parts[0].upper()\n        \n        if cmd == \"HELP\":\n            await self.handle_help(writer)\n        elif cmd == \"LIST\":\n            await self.handle_list(writer, parts[1:], files)\n        elif cmd == \"PUT\":\n            revision_counter = await self.handle_put(reader, writer, parts[1:], files, revision_counter)\n        elif cmd == \"GET\":\n            await self.handle_get(writer, parts[1:], files)\n        else:\n            await self.send_response(writer, f\"ERR illegal method: {command}\")\n        \n        return revision_counter",
  "new_string": "    async def handle_command(self, reader, writer, command):\n        \"\"\"Handle a specific command\"\"\"\n        parts = command.split()\n        if not parts:\n            return\n        \n        cmd = parts[0].upper()\n        \n        if cmd == \"HELP\":\n            await self.handle_help(writer)\n        elif cmd == \"LIST\":\n            await self.handle_list(writer, parts[1:])\n        elif cmd == \"PUT\":\n            await self.handle_put(reader, writer, parts[1:])\n        elif cmd == \"GET\":\n            await self.handle_get(writer, parts[1:])\n        else:\n            await self.send_response(writer, f\"ERR illegal method: {command}\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "    async def handle_list(self, writer, args, files):\n        \"\"\"Handle LIST command\"\"\"\n        if not args:\n            await self.send_response(writer, \"ERR usage: LIST dir\")\n            return\n        \n        directory = args[0]\n        \n        if directory == \"/\":\n            # Always return READY regardless of files present\n            await self.send_response(writer, \"READY\")\n        else:\n            # For other directories, return error like reference server\n            await self.send_response(writer, \"ERR illegal dir name\")",
  "new_string": "    async def handle_list(self, writer, args):\n        \"\"\"Handle LIST command\"\"\"\n        if not args:\n            await self.send_response(writer, \"ERR usage: LIST dir\")\n            return\n        \n        directory = args[0]\n        \n        if directory == \"/\":\n            # List files in root directory\n            async with self.lock:\n                files_in_root = [f for f in self.files.keys() if f.startswith(\"/\") and f.count(\"/\") == 1]\n                await self.send_response(writer, f\"OK {len(files_in_root)}\")\n                for filename in files_in_root:\n                    await self.send_response(writer, filename)\n        else:\n            # For other directories, return error like reference server\n            await self.send_response(writer, \"ERR illegal dir name\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "    async def handle_put(self, reader, writer, args, files, revision_counter):\n        \"\"\"Handle PUT command\"\"\"\n        if len(args) < 2:\n            await self.send_response(writer, \"ERR usage: PUT file length newline data\")\n            return revision_counter\n        \n        filename = args[0]\n        try:\n            length = int(args[1])\n        except ValueError:\n            await self.send_response(writer, \"ERR usage: PUT file length newline data\")\n            return revision_counter\n        \n        if not self.is_valid_filename(filename):\n            await self.send_response(writer, \"ERR illegal file name\")\n            return revision_counter\n        \n        # Read the file data\n        data = await reader.read(length)\n        if len(data) != length:\n            await self.send_response(writer, \"ERR incomplete data\")\n            return revision_counter\n        \n        # Store the file\n        revision_counter += 1\n        files[filename] = (data, revision_counter)\n        \n        await self.send_response(writer, f\"OK r{revision_counter}\")\n        return revision_counter",
  "new_string": "    async def handle_put(self, reader, writer, args):\n        \"\"\"Handle PUT command\"\"\"\n        if len(args) < 2:\n            await self.send_response(writer, \"ERR usage: PUT file length newline data\")\n            return\n        \n        filename = args[0]\n        try:\n            length = int(args[1])\n        except ValueError:\n            await self.send_response(writer, \"ERR usage: PUT file length newline data\")\n            return\n        \n        if not self.is_valid_filename(filename):\n            await self.send_response(writer, \"ERR illegal file name\")\n            return\n        \n        # Read the file data efficiently\n        data = b\"\"\n        remaining = length\n        while remaining > 0:\n            chunk_size = min(remaining, 65536)  # Read in 64KB chunks for efficiency\n            chunk = await reader.read(chunk_size)\n            if not chunk:\n                break\n            data += chunk\n            remaining -= len(chunk)\n        \n        if len(data) != length:\n            await self.send_response(writer, \"ERR incomplete data\")\n            return\n        \n        # Store the file with thread safety\n        async with self.lock:\n            self.revision_counter += 1\n            self.files[filename] = (data, self.revision_counter)\n            revision = self.revision_counter\n        \n        await self.send_response(writer, f\"OK r{revision}\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "    async def handle_get(self, writer, args, files):\n        \"\"\"Handle GET command\"\"\"\n        if not args:\n            await self.send_response(writer, \"ERR usage: GET file\")\n            return\n        \n        filename = args[0]\n        \n        if not self.is_valid_filename(filename):\n            await self.send_response(writer, \"ERR illegal file name\")\n            return\n        \n        if filename not in files:\n            await self.send_response(writer, \"ERR no such file\")\n            return\n        \n        data, revision = files[filename]\n        \n        # Send GET response in correct format:\n        # 1. READY\n        # 2. OK <length>  \n        # 3. <raw data>\n        await self.send_response(writer, \"READY\")\n        await self.send_response(writer, f\"OK {len(data)}\")\n        writer.write(data)\n        await writer.drain()",
  "new_string": "    async def handle_get(self, writer, args):\n        \"\"\"Handle GET command\"\"\"\n        if not args:\n            await self.send_response(writer, \"ERR usage: GET file\")\n            return\n        \n        filename = args[0]\n        \n        if not self.is_valid_filename(filename):\n            await self.send_response(writer, \"ERR illegal file name\")\n            return\n        \n        # Retrieve file with thread safety\n        async with self.lock:\n            if filename not in self.files:\n                await self.send_response(writer, \"ERR no such file\")\n                return\n            \n            data, revision = self.files[filename]\n        \n        # Send GET response in correct format:\n        # 1. READY\n        # 2. OK <length>  \n        # 3. <raw data>\n        await self.send_response(writer, \"READY\")\n        await self.send_response(writer, f\"OK {len(data)}\")\n        \n        # Write data efficiently in chunks\n        pos = 0\n        while pos < len(data):\n            chunk_size = min(65536, len(data) - pos)  # 64KB chunks\n            writer.write(data[pos:pos + chunk_size])\n            await writer.drain()\n            pos += chunk_size"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "    def is_valid_filename(self, filename):\n        \"\"\"Check if filename is valid\"\"\"\n        # Based on reverse engineering, implement validation logic\n        # For now, be restrictive like the reference server seems to be\n        \n        # Must start with / for absolute path\n        if not filename.startswith(\"/\"):\n            return False\n        \n        # Avoid certain patterns that caused errors\n        if \"//\" in filename or filename.endswith(\"/\"):\n            return False\n        \n        # Must be in certain directories to match reference behavior\n        allowed_prefixes = [\"/tmp/\", \"/var/\", \"/etc/\", \"/home/\", \"/root/\"]\n        if not any(filename.startswith(prefix) for prefix in allowed_prefixes):\n            # Allow root level files too\n            if filename.count(\"/\") != 1:\n                return False\n        \n        return True\n    \n    def is_valid_directory(self, directory):\n        \"\"\"Check if directory name is valid\"\"\"\n        # Based on reverse engineering, only \"/\" seems to be universally valid\n        return directory == \"/\"",
  "new_string": "    def is_valid_filename(self, filename):\n        \"\"\"Check if filename is valid\"\"\"\n        # Based on reverse engineering: must be absolute paths starting with /\n        if not filename.startswith(\"/\"):\n            return False\n        \n        # Avoid certain patterns that caused errors\n        if \"//\" in filename or filename.endswith(\"/\"):\n            return False\n        \n        # Allow any absolute path format\n        return True"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_shared_storage.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport time\n\ndef test_if_storage_is_shared():\n    \"\"\"Test if files are shared across connections\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    # Connection 1: Store a file\n    print(\"=== Connection 1: Storing file ===\")\n    sock1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock1.settimeout(10)\n    sock1.connect(('vcs.protohackers.com', 30307))\n    \n    read_line(sock1)  # Skip greeting\n    \n    filename = \"/shared_test.txt\"\n    data = \"shared storage test\"\n    \n    sock1.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n    put_response = read_line(sock1)\n    print(f\"PUT response: {repr(put_response)}\")\n    \n    # Test LIST on same connection\n    sock1.send(b\"LIST /\\n\")\n    list_response = read_line(sock1)\n    print(f\"LIST response on same connection: {repr(list_response)}\")\n    \n    sock1.close()\n    \n    # Small delay\n    time.sleep(0.5)\n    \n    # Connection 2: Try to retrieve the file\n    print(\"\\n=== Connection 2: Attempting to retrieve ===\")\n    sock2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock2.settimeout(10)\n    sock2.connect(('vcs.protohackers.com', 30307))\n    \n    read_line(sock2)  # Skip greeting\n    \n    # Try to GET the file\n    sock2.send(f\"GET {filename}\\n\".encode('ascii'))\n    \n    first_line = read_line(sock2)\n    print(f\"GET first line: {repr(first_line)}\")\n    \n    if first_line.strip() == \"READY\":\n        second_line = read_line(sock2)\n        print(f\"GET second line: {repr(second_line)}\")\n        \n        if second_line.startswith(\"OK \"):\n            length = int(second_line.split()[1])\n            file_data = read_bytes(sock2, length)\n            print(f\"File data: {repr(file_data.decode('ascii'))}\")\n            print(\"\u2713 Files ARE shared across connections!\")\n            return True\n        else:\n            print(\"\u2717 File not found\")\n            return False\n    elif \"no such file\" in first_line:\n        print(\"\u2717 File not found - storage is per-session\")\n        return False\n    \n    sock2.close()\n    return False\n\nif __name__ == \"__main__\":\n    is_shared = test_if_storage_is_shared()\n    print(f\"\\nConclusion: Storage is {'shared' if is_shared else 'per-session'}\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_our_server.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport time\n\ndef test_our_server():\n    \"\"\"Test our server implementation\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    try:\n        # Test basic functionality\n        print(\"=== Testing our server on port 8081 ===\")\n        \n        # Connection 1: Store a file\n        print(\"\\n--- Connection 1: Store file ---\")\n        sock1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock1.settimeout(5)\n        sock1.connect(('127.0.0.1', 8081))\n        \n        greeting = read_line(sock1)\n        print(f\"Greeting: {repr(greeting)}\")\n        \n        # Test HELP\n        sock1.send(b\"HELP\\n\")\n        help_response = read_line(sock1)\n        print(f\"HELP: {repr(help_response)}\")\n        \n        # Test LIST (empty)\n        sock1.send(b\"LIST /\\n\")\n        list_response = read_line(sock1)\n        print(f\"LIST (empty): {repr(list_response)}\")\n        \n        # Put a file\n        filename = \"/test.txt\"\n        data = \"hello world\"\n        \n        sock1.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n        put_response = read_line(sock1)\n        print(f\"PUT response: {repr(put_response)}\")\n        \n        # List files\n        sock1.send(b\"LIST /\\n\")\n        list_response = read_line(sock1)\n        print(f\"LIST response: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            print(f\"Files: {count}\")\n            for i in range(count):\n                filename_line = read_line(sock1)\n                print(f\"  {filename_line.strip()}\")\n        \n        sock1.close()\n        \n        # Connection 2: Retrieve the file (test shared storage)\n        print(\"\\n--- Connection 2: Test shared storage ---\")\n        sock2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock2.settimeout(5)\n        sock2.connect(('127.0.0.1', 8081))\n        \n        read_line(sock2)  # Skip greeting\n        \n        # Get the file\n        sock2.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        first_line = read_line(sock2)\n        print(f\"GET first line: {repr(first_line)}\")\n        \n        if first_line.strip() == \"READY\":\n            second_line = read_line(sock2)\n            print(f\"GET second line: {repr(second_line)}\")\n            \n            if second_line.startswith(\"OK \"):\n                length = int(second_line.split()[1])\n                file_data = read_bytes(sock2, length)\n                print(f\"File data: {repr(file_data.decode('ascii'))}\")\n                \n                if file_data.decode('ascii') == data:\n                    print(\"\u2713 Shared storage working correctly!\")\n                else:\n                    print(\"\u2717 Data mismatch\")\n        \n        sock2.close()\n        \n        print(\"\\n\u2713 Server test completed successfully!\")\n        return True\n        \n    except Exception as e:\n        print(f\"\u2717 Server test failed: {e}\")\n        return False\n\nif __name__ == \"__main__\":\n    test_our_server()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        await self.send_response(writer, f\"OK r{revision}\")",
  "new_string": "        await self.send_response(writer, f\"OK r{revision}\")\n        await self.send_response(writer, \"READY\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        # Send GET response in correct format:\n        # 1. READY\n        # 2. OK <length>  \n        # 3. <raw data>\n        await self.send_response(writer, \"READY\")\n        await self.send_response(writer, f\"OK {len(data)}\")\n        \n        # Write data efficiently in chunks\n        pos = 0\n        while pos < len(data):\n            chunk_size = min(65536, len(data) - pos)  # 64KB chunks\n            writer.write(data[pos:pos + chunk_size])\n            await writer.drain()\n            pos += chunk_size",
  "new_string": "        # Send GET response in correct format:\n        # 1. OK <length>\n        # 2. <raw data>\n        # 3. READY\n        await self.send_response(writer, f\"OK {len(data)}\")\n        \n        # Write data efficiently in chunks\n        pos = 0\n        while pos < len(data):\n            chunk_size = min(65536, len(data) - pos)  # 64KB chunks\n            writer.write(data[pos:pos + chunk_size])\n            await writer.drain()\n            pos += chunk_size\n        \n        await self.send_response(writer, \"READY\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_response_formats.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_response_formats():\n    \"\"\"Test that our server matches the reference response formats\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Testing Reference Server Response Formats ===\")\n    \n    # Test reference server\n    sock_ref = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    sock_ref.settimeout(10)\n    sock_ref.connect(('vcs.protohackers.com', 30307))\n    \n    read_line(sock_ref)  # Skip greeting\n    \n    # Test PUT response format\n    filename = \"/format_test.txt\"\n    data = \"test\"\n    \n    print(f\"\\n--- Reference PUT Response ---\")\n    sock_ref.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n    \n    put_line1 = read_line(sock_ref)\n    print(f\"Line 1: {repr(put_line1)}\")\n    \n    try:\n        put_line2 = read_line(sock_ref)\n        print(f\"Line 2: {repr(put_line2)}\")\n    except socket.timeout:\n        print(\"No second line (timeout)\")\n    \n    # Test GET response format\n    print(f\"\\n--- Reference GET Response ---\")\n    sock_ref.send(f\"GET {filename}\\n\".encode('ascii'))\n    \n    get_line1 = read_line(sock_ref)\n    print(f\"Line 1: {repr(get_line1)}\")\n    \n    if get_line1.startswith(\"OK \"):\n        length = int(get_line1.split()[1])\n        file_data = read_bytes(sock_ref, length)\n        print(f\"Data: {repr(file_data)}\")\n        \n        try:\n            get_line2 = read_line(sock_ref)\n            print(f\"Line 3: {repr(get_line2)}\")\n        except socket.timeout:\n            print(\"No third line (timeout)\")\n    \n    sock_ref.close()\n\ndef test_our_server_formats():\n    \"\"\"Test our server response formats\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"\\n=== Testing Our Server Response Formats ===\")\n    \n    try:\n        sock_ours = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock_ours.settimeout(10)\n        sock_ours.connect(('127.0.0.1', 8081))\n        \n        read_line(sock_ours)  # Skip greeting\n        \n        # Test PUT response format\n        filename = \"/format_test.txt\"\n        data = \"test\"\n        \n        print(f\"\\n--- Our PUT Response ---\")\n        sock_ours.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n        \n        put_line1 = read_line(sock_ours)\n        print(f\"Line 1: {repr(put_line1)}\")\n        \n        try:\n            put_line2 = read_line(sock_ours)\n            print(f\"Line 2: {repr(put_line2)}\")\n        except socket.timeout:\n            print(\"No second line (timeout)\")\n        \n        # Test GET response format\n        print(f\"\\n--- Our GET Response ---\")\n        sock_ours.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        get_line1 = read_line(sock_ours)\n        print(f\"Line 1: {repr(get_line1)}\")\n        \n        if get_line1.startswith(\"OK \"):\n            length = int(get_line1.split()[1])\n            file_data = read_bytes(sock_ours, length)\n            print(f\"Data: {repr(file_data)}\")\n            \n            try:\n                get_line2 = read_line(sock_ours)\n                print(f\"Line 3: {repr(get_line2)}\")\n            except socket.timeout:\n                print(\"No third line (timeout)\")\n        \n        sock_ours.close()\n        \n    except ConnectionRefusedError:\n        print(\"Our server not running - start it first\")\n\nif __name__ == \"__main__\":\n    test_response_formats()\n    test_our_server_formats()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_corrected_server.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_corrected_server():\n    \"\"\"Test our corrected server formats\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Testing Corrected Server on Port 8082 ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 8082))\n        \n        greeting = read_line(sock)\n        print(f\"Greeting: {repr(greeting)}\")\n        \n        # Test PUT response format\n        filename = \"/test123.txt\"\n        data = \"hello\"\n        \n        print(f\"\\n--- PUT Response Format ---\")\n        sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n        \n        put_line1 = read_line(sock)\n        print(f\"PUT Line 1: {repr(put_line1)}\")\n        \n        put_line2 = read_line(sock)\n        print(f\"PUT Line 2: {repr(put_line2)}\")\n        \n        # Test GET response format\n        print(f\"\\n--- GET Response Format ---\")\n        sock.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        get_line1 = read_line(sock)\n        print(f\"GET Line 1: {repr(get_line1)}\")\n        \n        if get_line1.startswith(\"OK \"):\n            length = int(get_line1.split()[1])\n            file_data = read_bytes(sock, length)\n            print(f\"GET Data: {repr(file_data)}\")\n            \n            get_line2 = read_line(sock)\n            print(f\"GET Line 3: {repr(get_line2)}\")\n        \n        sock.close()\n        print(\"\u2713 Server response formats look correct!\")\n        \n    except Exception as e:\n        print(f\"Error testing server: {e}\")\n\nif __name__ == \"__main__\":\n    test_corrected_server()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "### PUT (Store File)\n**Request:** `PUT <filename> <length>\\n<data>`\n**Response:**\n- Success: `OK <revision>\\n` \n- Error: `ERR illegal file name\\n`\n- Error: `ERR usage: PUT file length newline data\\n`\n\n**Description:** \n- Stores a file with specified name and data\n- Length must match the actual data length\n- Data follows immediately after the PUT command line\n- Returns revision number on success",
  "new_string": "### PUT (Store File)\n**Request:** `PUT <filename> <length>\\n<data>`\n**Response:**\n- Success: `OK r<revision>\\nREADY\\n` \n- Error: `ERR illegal file name\\n`\n- Error: `ERR usage: PUT file length newline data\\n`\n\n**Description:** \n- Stores a file with specified name and data\n- Length must match the actual data length\n- Data follows immediately after the PUT command line\n- Returns revision number (with \"r\" prefix) followed by READY status"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "### GET (Retrieve File)  \n**Request:** `GET <filename>\\n`\n**Response:**\n- Success: File content (format TBD)\n- Error: `ERR no such file\\n`\n- Error: `ERR illegal file name\\n`",
  "new_string": "### GET (Retrieve File)  \n**Request:** `GET <filename>\\n`\n**Response:**\n- Success: `OK <length>\\n<data>READY\\n`\n- Error: `ERR no such file\\n`\n- Error: `ERR illegal file name\\n`\n\n**Description:**\n- Returns file content with length header\n- Format: First line contains \"OK <length>\", then <length> bytes of raw data, then \"READY\\n\""
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "## Unknowns/Areas for Further Investigation\n1. Valid filename format - only absolute paths? Specific patterns?\n2. Directory structure - can subdirectories be created?\n3. GET response format - how is file data returned?\n4. File size limits\n5. Session persistence - do files persist across connections?\n6. Revision system - how are revisions used?",
  "new_string": "## Complete Protocol Examples\n\n### Successful File Operations\n```\nClient: PUT /test.txt 5\\nhello\nServer: OK r1\\nREADY\\n\n\nClient: GET /test.txt\\n\nServer: OK 5\\nhelloREADY\\n\n\nClient: LIST /\\n\nServer: OK 1\\n/test.txt\\n\n```\n\n### Error Cases\n```\nClient: PUT invalid_name 4\\ndata\nServer: ERR illegal file name\\n\n\nClient: GET /nonexistent\\n\nServer: ERR no such file\\n\n```"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "            # List files in root directory\n            async with self.lock:\n                files_in_root = [f for f in self.files.keys() if f.startswith(\"/\") and f.count(\"/\") == 1]\n                await self.send_response(writer, f\"OK {len(files_in_root)}\")\n                for filename in files_in_root:\n                    await self.send_response(writer, filename)",
  "new_string": "            # List files in root directory\n            async with self.lock:\n                files_in_root = [(f, self.files[f][1]) for f in self.files.keys() if f.startswith(\"/\") and f.count(\"/\") == 1]\n                await self.send_response(writer, f\"OK {len(files_in_root)}\")\n                for filename, revision in files_in_root:\n                    # Remove leading slash from filename and add revision\n                    display_name = filename[1:] if filename.startswith(\"/\") else filename\n                    await self.send_response(writer, f\"{display_name} r{revision}\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_list_format.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_list_format():\n    \"\"\"Test the corrected LIST response format\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    print(\"=== Testing Corrected LIST Format ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 8080))\n        \n        greeting = read_line(sock)\n        print(f\"Greeting: {repr(greeting)}\")\n        \n        # Add some test files\n        files_to_add = [\n            (\"/test.txt\", \"hello\"),\n            (\"/test2.txt\", \"world\"),\n            (\"/data.dat\", \"binary data\")\n        ]\n        \n        for filename, data in files_to_add:\n            print(f\"Adding {filename}...\")\n            sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n            \n            put_line1 = read_line(sock)\n            put_line2 = read_line(sock) \n            print(f\"PUT response: {repr(put_line1)} {repr(put_line2)}\")\n        \n        # Test LIST\n        print(f\"\\n--- LIST Response ---\")\n        sock.send(b\"LIST /\\n\")\n        \n        list_response = read_line(sock)\n        print(f\"LIST header: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            print(f\"Files: {count}\")\n            \n            for i in range(count):\n                file_line = read_line(sock)\n                print(f\"File {i+1}: {repr(file_line)}\")\n        \n        # Read final READY\n        ready_line = read_line(sock)\n        print(f\"Final: {repr(ready_line)}\")\n        \n        sock.close()\n        print(\"\u2713 LIST format test completed!\")\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    test_list_format()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "### LIST\n**Request:** `LIST <directory>\\n`\n**Response:** \n- Always: `READY\\n` (regardless of files present)\n- Error: `ERR usage: LIST dir\\n` (if no directory specified)\n- Error: `ERR illegal dir name\\n` (if invalid directory)\n\n**Valid directories:** \n- \"/\" (root directory) - only confirmed valid directory\n- Other directories appear to be restricted\n\n**Note:** LIST does not actually enumerate files, it just returns readiness status\n\n**Example:**\n```\nLIST /\nREADY\n\n```",
  "new_string": "### LIST\n**Request:** `LIST <directory>\\n`\n**Response:** \n- Success: `OK <count>\\n` followed by <count> lines of `<filename> r<revision>\\n`, then `READY\\n`\n- Error: `ERR usage: LIST dir\\n` (if no directory specified)\n- Error: `ERR illegal dir name\\n` (if invalid directory)\n\n**Valid directories:** \n- \"/\" (root directory) - only confirmed valid directory\n- Other directories appear to be restricted\n\n**Format:** \n- Filenames are returned without leading \"/\" \n- Each file entry includes its revision number with \"r\" prefix\n\n**Example:**\n```\nLIST /\nOK 2\ntest.txt r1\ndata.dat r2\nREADY\n\n```"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "- Session-only storage: Files persist only within a single connection, NOT across connections\n- Binary data support: PUT accepts binary data based on length\n- Revision system: PUT returns revision numbers (format: \"OK r<number>\")\n- LIST behavior: Always returns \"READY\\n\" regardless of files present",
  "new_string": "- Session-only storage: Files persist only within a single connection, NOT across connections\n- Binary data support: PUT accepts binary data based on length\n- Revision system: PUT returns revision numbers (format: \"OK r<number>\")\n- LIST functionality: Returns actual file listings with filenames and revision numbers"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "                # Parse and handle command\n                await self.handle_command(reader, writer, command)",
  "new_string": "                # Parse and handle command\n                await self.handle_command(reader, writer, command)\n                \n                # Send READY after every command\n                await self.send_response(writer, \"READY\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        await self.send_response(writer, \"READY\")",
  "new_string": ""
}

{
  "replace_all": true,
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        await self.send_response(writer, \"READY\")",
  "new_string": ""
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "                # Parse and handle command\n                await self.handle_command(reader, writer, command)\n                \n                # Send READY after every command\n                await self.send_response(writer, \"READY\")",
  "new_string": "                # Parse and handle command\n                await self.handle_command(reader, writer, command)\n                \n                # Send READY after every command\n                await self.send_response(writer, \"READY\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_centralized_ready.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_centralized_ready():\n    \"\"\"Test that READY is sent after every command\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Testing Centralized READY Responses ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 8080))\n        \n        greeting = read_line(sock)\n        print(f\"Greeting: {repr(greeting)}\")\n        \n        # Test HELP command\n        print(f\"\\n--- HELP Command ---\")\n        sock.send(b\"HELP\\n\")\n        \n        help_response = read_line(sock)\n        print(f\"HELP response: {repr(help_response)}\")\n        \n        ready_after_help = read_line(sock)\n        print(f\"READY after HELP: {repr(ready_after_help)}\")\n        \n        # Test PUT command\n        print(f\"\\n--- PUT Command ---\")\n        filename = \"/test.txt\"\n        data = \"hello world\"\n        \n        sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n        \n        put_response = read_line(sock)\n        print(f\"PUT response: {repr(put_response)}\")\n        \n        ready_after_put = read_line(sock)\n        print(f\"READY after PUT: {repr(ready_after_put)}\")\n        \n        # Test GET command\n        print(f\"\\n--- GET Command ---\")\n        sock.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        get_response = read_line(sock)\n        print(f\"GET response: {repr(get_response)}\")\n        \n        if get_response.startswith(\"OK \"):\n            length = int(get_response.split()[1])\n            file_data = read_bytes(sock, length)\n            print(f\"File data: {repr(file_data)}\")\n        \n        ready_after_get = read_line(sock)\n        print(f\"READY after GET: {repr(ready_after_get)}\")\n        \n        # Test LIST command\n        print(f\"\\n--- LIST Command ---\")\n        sock.send(b\"LIST /\\n\")\n        \n        list_response = read_line(sock)\n        print(f\"LIST response: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            for i in range(count):\n                file_entry = read_line(sock)\n                print(f\"File entry: {repr(file_entry)}\")\n        \n        ready_after_list = read_line(sock)\n        print(f\"READY after LIST: {repr(ready_after_list)}\")\n        \n        sock.close()\n        print(\"\\n\u2713 All commands properly followed by READY!\")\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    test_centralized_ready()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_port_9000.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_port_9000():\n    \"\"\"Test server on port 9000\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    print(\"=== Testing Server on Port 9000 ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9000))\n        \n        greeting = read_line(sock)\n        print(f\"Greeting: {repr(greeting)}\")\n        \n        # Test HELP command\n        sock.send(b\"HELP\\n\")\n        \n        help_response = read_line(sock)\n        print(f\"HELP response: {repr(help_response)}\")\n        \n        ready_response = read_line(sock)\n        print(f\"READY response: {repr(ready_response)}\")\n        \n        sock.close()\n        print(\"\u2713 Server responding correctly!\")\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    test_port_9000()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "                # Parse and handle command\n                await self.handle_command(reader, writer, command)\n                \n                # Send READY after every command",
  "new_string": "                # Parse and handle command\n                await self.handle_command(reader, writer, command)\n                \n                # Send READY after every command\n                await self.send_response(writer, \"READY\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        try:\n            # Send initial greeting\n            await self.send_response(writer, \"READY\")\n            \n            while True:\n                # Read command\n                line = await reader.readline()\n                if not line:\n                    break\n                \n                command = line.decode('ascii', errors='replace').strip()\n                if not command:\n                    continue\n                \n                print(f\"Command from {client_addr}: {repr(command)}\")\n                \n                # Parse and handle command\n                await self.handle_command(reader, writer, command)\n                \n                # Send READY after every command\n                await self.send_response(writer, \"READY\")",
  "new_string": "        try:\n            while True:\n                # Send READY at the beginning of each loop iteration\n                await self.send_response(writer, \"READY\")\n                \n                # Read command\n                line = await reader.readline()\n                if not line:\n                    break\n                \n                command = line.decode('ascii', errors='replace').strip()\n                if not command:\n                    continue\n                \n                print(f\"Command from {client_addr}: {repr(command)}\")\n                \n                # Parse and handle command\n                await self.handle_command(reader, writer, command)"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        try:\n            # Send initial greeting\n                \n            while True:\n                # Read command\n                line = await reader.readline()\n                if not line:\n                    break\n                \n                command = line.decode('ascii', errors='replace').strip()\n                if not command:\n                    continue\n                \n                print(f\"Command from {client_addr}: {repr(command)}\")\n                \n                # Parse and handle command\n                await self.handle_command(reader, writer, command)\n                \n                # Send READY after every command\n                await self.send_response(writer, \"READY\")",
  "new_string": "        try:\n            while True:\n                # Send READY at the beginning of each loop iteration\n                await self.send_response(writer, \"READY\")\n                \n                # Read command\n                line = await reader.readline()\n                if not line:\n                    break\n                \n                command = line.decode('ascii', errors='replace').strip()\n                if not command:\n                    continue\n                \n                print(f\"Command from {client_addr}: {repr(command)}\")\n                \n                # Parse and handle command\n                await self.handle_command(reader, writer, command)"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_final_server.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_final_server():\n    \"\"\"Test the final corrected server implementation\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Testing Final Server Implementation ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9001))\n        \n        # Should get initial READY\n        greeting = read_line(sock)\n        print(f\"Initial READY: {repr(greeting)}\")\n        \n        # Test HELP command\n        print(f\"\\n--- HELP Command ---\")\n        sock.send(b\"HELP\\n\")\n        \n        help_response = read_line(sock)\n        print(f\"HELP response: {repr(help_response)}\")\n        \n        ready_after_help = read_line(sock)\n        print(f\"READY after HELP: {repr(ready_after_help)}\")\n        \n        # Test PUT command\n        print(f\"\\n--- PUT Command ---\")\n        filename = \"/test.txt\"\n        data = \"hello\"\n        \n        sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n        \n        put_response = read_line(sock)\n        print(f\"PUT response: {repr(put_response)}\")\n        \n        ready_after_put = read_line(sock)\n        print(f\"READY after PUT: {repr(ready_after_put)}\")\n        \n        # Test GET command\n        print(f\"\\n--- GET Command ---\")\n        sock.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        get_response = read_line(sock)\n        print(f\"GET response: {repr(get_response)}\")\n        \n        if get_response.startswith(\"OK \"):\n            length = int(get_response.split()[1])\n            file_data = read_bytes(sock, length)\n            print(f\"GET data: {repr(file_data)}\")\n        \n        ready_after_get = read_line(sock)\n        print(f\"READY after GET: {repr(ready_after_get)}\")\n        \n        # Test LIST command\n        print(f\"\\n--- LIST Command ---\")\n        sock.send(b\"LIST /\\n\")\n        \n        list_response = read_line(sock)\n        print(f\"LIST response: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            for i in range(count):\n                file_entry = read_line(sock)\n                print(f\"File entry: {repr(file_entry)}\")\n        \n        ready_after_list = read_line(sock)\n        print(f\"READY after LIST: {repr(ready_after_list)}\")\n        \n        sock.close()\n        print(\"\\n\u2713 All protocol flows working correctly!\")\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    test_final_server()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_subdirectories.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_subdirectory_files():\n    \"\"\"Test handling of files in subdirectories like /kilo.0001/kilo.c\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Testing Subdirectory File Handling ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9000))\n        \n        # Skip initial READY\n        read_line(sock)\n        \n        # Test file in subdirectory\n        filename = \"/kilo.0001/kilo.c\"\n        data = \"#include <stdio.h>\\nint main() { return 0; }\"\n        \n        print(f\"Storing file: {filename}\")\n        print(f\"Data: {repr(data)}\")\n        \n        sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n        \n        put_response = read_line(sock)\n        print(f\"PUT response: {repr(put_response)}\")\n        \n        ready_response = read_line(sock)\n        print(f\"READY: {repr(ready_response)}\")\n        \n        # Test retrieval\n        print(f\"\\nRetrieving file: {filename}\")\n        sock.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        get_response = read_line(sock)\n        print(f\"GET response: {repr(get_response)}\")\n        \n        if get_response.startswith(\"OK \"):\n            length = int(get_response.split()[1])\n            print(f\"Expected length: {length}\")\n            print(f\"Original length: {len(data)}\")\n            \n            file_data = read_bytes(sock, length)\n            print(f\"Retrieved data: {repr(file_data.decode('ascii', errors='replace'))}\")\n            \n            if file_data.decode('ascii') == data:\n                print(\"\u2713 Data matches!\")\n            else:\n                print(\"\u2717 Data mismatch!\")\n                print(f\"Expected: {repr(data)}\")\n                print(f\"Got: {repr(file_data.decode('ascii'))}\")\n        \n        ready_response = read_line(sock)\n        print(f\"READY: {repr(ready_response)}\")\n        \n        # Test LIST to see how subdirectory files are handled\n        print(f\"\\nTesting LIST:\")\n        sock.send(b\"LIST /\\n\")\n        \n        list_response = read_line(sock)\n        print(f\"LIST response: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            print(f\"Files: {count}\")\n            for i in range(count):\n                file_entry = read_line(sock)\n                print(f\"Entry: {repr(file_entry)}\")\n        \n        ready_response = read_line(sock)\n        print(f\"READY: {repr(ready_response)}\")\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    test_subdirectory_files()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "            # List files in root directory\n            async with self.lock:\n                files_in_root = [(f, self.files[f][1]) for f in self.files.keys() if f.startswith(\"/\") and f.count(\"/\") == 1]\n                await self.send_response(writer, f\"OK {len(files_in_root)}\")\n                for filename, revision in files_in_root:\n                    # Remove leading slash from filename and add revision\n                    display_name = filename[1:] if filename.startswith(\"/\") else filename\n                    await self.send_response(writer, f\"{display_name} r{revision}\")",
  "new_string": "            # List all files (not just root directory files)\n            async with self.lock:\n                all_files = [(f, self.files[f][1]) for f in self.files.keys()]\n                await self.send_response(writer, f\"OK {len(all_files)}\")\n                for filename, revision in all_files:\n                    # Remove leading slash from filename and add revision\n                    display_name = filename[1:] if filename.startswith(\"/\") else filename\n                    await self.send_response(writer, f\"{display_name} r{revision}\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_port_9002.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_port_9002():\n    \"\"\"Test subdirectory file handling on port 9002\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Testing Server on Port 9002 ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9002))\n        \n        # Skip initial READY\n        ready = read_line(sock)\n        print(f\"Initial READY: {repr(ready)}\")\n        \n        # Test files in subdirectory\n        test_files = [\n            (\"/simple.txt\", \"simple content\"),\n            (\"/kilo.0001/kilo.c\", \"#include <stdio.h>\\nint main() { return 0; }\"),\n            (\"/deep/nested/file.txt\", \"nested content\")\n        ]\n        \n        for filename, data in test_files:\n            print(f\"\\nStoring {filename} ({len(data)} bytes)\")\n            sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n            \n            put_response = read_line(sock)\n            print(f\"PUT: {repr(put_response)}\")\n            \n            ready = read_line(sock)\n            print(f\"READY: {repr(ready)}\")\n        \n        # Test LIST\n        print(f\"\\nTesting LIST:\")\n        sock.send(b\"LIST /\\n\")\n        \n        list_response = read_line(sock)\n        print(f\"LIST: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            print(f\"Files: {count}\")\n            for i in range(count):\n                file_entry = read_line(sock)\n                print(f\"  {file_entry.strip()}\")\n        \n        ready = read_line(sock)\n        print(f\"READY: {repr(ready)}\")\n        \n        # Test GET for subdirectory file\n        target_file = \"/kilo.0001/kilo.c\"\n        expected_data = \"#include <stdio.h>\\nint main() { return 0; }\"\n        \n        print(f\"\\nTesting GET {target_file}\")\n        sock.send(f\"GET {target_file}\\n\".encode('ascii'))\n        \n        get_response = read_line(sock)\n        print(f\"GET: {repr(get_response)}\")\n        \n        if get_response.startswith(\"OK \"):\n            length = int(get_response.split()[1])\n            file_data = read_bytes(sock, length)\n            retrieved_data = file_data.decode('ascii')\n            \n            print(f\"Expected: {repr(expected_data)}\")\n            print(f\"Retrieved: {repr(retrieved_data)}\")\n            \n            if retrieved_data == expected_data:\n                print(\"\u2713 Data correct!\")\n            else:\n                print(\"\u2717 Data mismatch!\")\n        \n        ready = read_line(sock)\n        print(f\"READY: {repr(ready)}\")\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    test_port_9002()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_file_revisions.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_file_revisions():\n    \"\"\"Test file revision handling - same file updated multiple times\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Testing File Revision Handling ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9002))\n        \n        # Skip initial READY\n        read_line(sock)\n        \n        filename = \"/kilo.0001/kilo.c\"\n        \n        # Store multiple versions of the same file\n        versions = [\n            \"version 1 content\",\n            \"version 2 content - updated\", \n            \"version 3 content - final\"\n        ]\n        \n        revisions = []\n        for i, data in enumerate(versions, 1):\n            print(f\"\\nStoring version {i}: {repr(data)}\")\n            sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n            \n            put_response = read_line(sock)\n            print(f\"PUT response: {repr(put_response)}\")\n            \n            # Extract revision number\n            if put_response.startswith(\"OK r\"):\n                revision = put_response.strip().split(\"r\")[1]\n                revisions.append(revision)\n                print(f\"Revision: r{revision}\")\n            \n            read_line(sock)  # READY\n        \n        print(f\"\\nRevisions created: {revisions}\")\n        \n        # Test that we get the latest version\n        print(f\"\\nTesting GET {filename} (should get latest version)\")\n        sock.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        get_response = read_line(sock)\n        print(f\"GET response: {repr(get_response)}\")\n        \n        if get_response.startswith(\"OK \"):\n            length = int(get_response.split()[1])\n            file_data = read_bytes(sock, length)\n            retrieved_data = file_data.decode('ascii')\n            \n            print(f\"Retrieved: {repr(retrieved_data)}\")\n            print(f\"Expected latest: {repr(versions[-1])}\")\n            \n            if retrieved_data == versions[-1]:\n                print(\"\u2713 Got latest version!\")\n            else:\n                print(\"\u2717 Wrong version retrieved!\")\n        \n        read_line(sock)  # READY\n        \n        # Test LIST shows the file with latest revision\n        print(f\"\\nTesting LIST (should show latest revision)\")\n        sock.send(b\"LIST /\\n\")\n        \n        list_response = read_line(sock)\n        print(f\"LIST response: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            for i in range(count):\n                file_entry = read_line(sock)\n                print(f\"File entry: {repr(file_entry)}\")\n                if filename[1:] in file_entry:  # Remove leading slash\n                    if f\"r{revisions[-1]}\" in file_entry:\n                        print(\"\u2713 LIST shows latest revision!\")\n                    else:\n                        print(\"\u2717 LIST shows wrong revision!\")\n        \n        read_line(sock)  # READY\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    test_file_revisions()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/debug_data_integrity.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_data_integrity():\n    \"\"\"Test data integrity with various types of content\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Testing Data Integrity ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9003))\n        \n        # Skip initial READY\n        read_line(sock)\n        \n        # Test various data types that might cause issues\n        test_cases = [\n            (\"/kilo.0001/README.md\", \"# README\\n\\nThis is a test file.\\nWith multiple lines.\\n\"),\n            (\"/binary.dat\", b\"\\x00\\x01\\x02\\x03\\xff\\xfe\\xfd\".decode('latin1')),\n            (\"/unicode.txt\", \"Hello \u4e16\u754c \ud83c\udf0d\"),\n            (\"/special.txt\", \"Line1\\nLine2\\r\\nLine3\\tTabbed\"),\n            (\"/empty.txt\", \"\"),\n            (\"/large.txt\", \"x\" * 1000)\n        ]\n        \n        for filename, data in test_cases:\n            print(f\"\\n--- Testing {filename} ---\")\n            print(f\"Original data ({len(data)} bytes): {repr(data)}\")\n            \n            # Store file\n            if isinstance(data, str):\n                data_bytes = data.encode('utf-8')\n            else:\n                data_bytes = data\n            \n            sock.send(f\"PUT {filename} {len(data_bytes)}\\n\".encode('ascii'))\n            sock.send(data_bytes)\n            \n            put_response = read_line(sock)\n            print(f\"PUT response: {repr(put_response)}\")\n            \n            read_line(sock)  # READY\n            \n            # Retrieve file\n            sock.send(f\"GET {filename}\\n\".encode('ascii'))\n            \n            get_response = read_line(sock)\n            print(f\"GET response: {repr(get_response)}\")\n            \n            if get_response.startswith(\"OK \"):\n                length = int(get_response.split()[1])\n                file_data = read_bytes(sock, length)\n                \n                print(f\"Retrieved ({len(file_data)} bytes): {repr(file_data)}\")\n                \n                if file_data == data_bytes:\n                    print(\"\u2713 Data integrity OK\")\n                else:\n                    print(\"\u2717 Data corruption detected!\")\n                    print(f\"Expected: {repr(data_bytes)}\")\n                    print(f\"Got: {repr(file_data)}\")\n            \n            read_line(sock)  # READY\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\ndef test_concurrent_operations():\n    \"\"\"Test if concurrent operations cause data corruption\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"\\n=== Testing Concurrent Operations ===\")\n    \n    try:\n        # Connection 1: Store a file\n        sock1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock1.settimeout(10)\n        sock1.connect(('127.0.0.1', 9003))\n        read_line(sock1)  # READY\n        \n        filename = \"/concurrent_test.txt\"\n        data1 = \"Data from connection 1\"\n        \n        sock1.send(f\"PUT {filename} {len(data1)}\\n{data1}\".encode('ascii'))\n        put1 = read_line(sock1)\n        print(f\"Connection 1 PUT: {repr(put1)}\")\n        read_line(sock1)  # READY\n        \n        # Connection 2: Update the same file\n        sock2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock2.settimeout(10)\n        sock2.connect(('127.0.0.1', 9003))\n        read_line(sock2)  # READY\n        \n        data2 = \"Data from connection 2 - updated\"\n        sock2.send(f\"PUT {filename} {len(data2)}\\n{data2}\".encode('ascii'))\n        put2 = read_line(sock2)\n        print(f\"Connection 2 PUT: {repr(put2)}\")\n        read_line(sock2)  # READY\n        \n        # Connection 1: Try to retrieve\n        sock1.send(f\"GET {filename}\\n\".encode('ascii'))\n        get1 = read_line(sock1)\n        print(f\"Connection 1 GET: {repr(get1)}\")\n        \n        if get1.startswith(\"OK \"):\n            length = int(get1.split()[1])\n            file_data = read_bytes(sock1, length)\n            print(f\"Connection 1 retrieved: {repr(file_data.decode('ascii'))}\")\n            print(f\"Expected (latest): {repr(data2)}\")\n            \n            if file_data.decode('ascii') == data2:\n                print(\"\u2713 Got latest version correctly\")\n            else:\n                print(\"\u2717 Data inconsistency!\")\n        \n        sock1.close()\n        sock2.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    # Start server first\n    import subprocess\n    import time\n    \n    # Start server in background\n    server_proc = subprocess.Popen(['python3', 'server.py', '9003'])\n    time.sleep(2)\n    \n    try:\n        test_data_integrity()\n        test_concurrent_operations()\n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        # Read the file data efficiently\n        data = b\"\"\n        remaining = length\n        while remaining > 0:\n            chunk_size = min(remaining, 65536)  # Read in 64KB chunks for efficiency\n            chunk = await reader.read(chunk_size)\n            if not chunk:\n                break\n            data += chunk\n            remaining -= len(chunk)",
  "new_string": "        # Read the file data\n        data = await reader.read(length)"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        # Send GET response in correct format:\n        # 1. OK <length>\n        # 2. <raw data>\n        # 3. READY\n        await self.send_response(writer, f\"OK {len(data)}\")\n        \n        # Write data efficiently in chunks\n        pos = 0\n        while pos < len(data):\n            chunk_size = min(65536, len(data) - pos)  # 64KB chunks\n            writer.write(data[pos:pos + chunk_size])\n            await writer.drain()\n            pos += chunk_size",
  "new_string": "        # Send GET response in correct format:\n        # 1. OK <length>\n        # 2. <raw data>\n        # 3. READY\n        await self.send_response(writer, f\"OK {len(data)}\")\n        \n        # Write data\n        writer.write(data)\n        await writer.drain()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_simplified.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_simplified_server():\n    \"\"\"Test the simplified server version\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Testing Simplified Server ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9004))\n        \n        # Skip initial READY\n        read_line(sock)\n        \n        # Test the specific file mentioned in validation error\n        filename = \"/kilo.0001/README.md\"\n        data = \"# Kilo Editor\\n\\nA simple text editor implementation.\\n\\n## Features\\n- Basic editing\\n- File operations\\n\"\n        \n        print(f\"Testing {filename}\")\n        print(f\"Data ({len(data)} bytes): {repr(data)}\")\n        \n        # Store file\n        sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n        \n        put_response = read_line(sock)\n        print(f\"PUT response: {repr(put_response)}\")\n        \n        read_line(sock)  # READY\n        \n        # Retrieve file\n        sock.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        get_response = read_line(sock)\n        print(f\"GET response: {repr(get_response)}\")\n        \n        if get_response.startswith(\"OK \"):\n            length = int(get_response.split()[1])\n            file_data = read_bytes(sock, length)\n            \n            print(f\"Retrieved ({len(file_data)} bytes): {repr(file_data)}\")\n            \n            if file_data == data.encode('ascii'):\n                print(\"\u2713 Data matches exactly\")\n            else:\n                print(\"\u2717 Data mismatch!\")\n                print(f\"Expected: {repr(data.encode('ascii'))}\")\n                print(f\"Got: {repr(file_data)}\")\n        \n        read_line(sock)  # READY\n        \n        # Test LIST to see revision\n        sock.send(b\"LIST /\\n\")\n        list_response = read_line(sock)\n        print(f\"LIST: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            for i in range(count):\n                entry = read_line(sock)\n                print(f\"Entry: {repr(entry)}\")\n        \n        read_line(sock)  # READY\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    import time\n    time.sleep(2)  # Wait for server to start\n    test_simplified_server()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        # Read the file data\n        data = await reader.read(length)",
  "new_string": "        # Read the file data - ensure we get all bytes\n        data = b\"\"\n        remaining = length\n        while remaining > 0:\n            chunk = await reader.read(remaining)\n            if not chunk:\n                break\n            data += chunk\n            remaining -= len(chunk)"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_chunked_upload.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport time\n\ndef test_chunked_upload():\n    \"\"\"Test chunked file upload to reproduce the validation error\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Testing Chunked File Upload ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(15)\n        sock.connect(('127.0.0.1', 9005))\n        \n        # Skip initial READY\n        read_line(sock)\n        \n        # Test with a large file that might be sent in chunks\n        filename = \"/kilo.0001/kilo.c\"\n        data = '''#include <ctype.h>\n#include <errno.h>\n#include <fcntl.h>\n#include <stdio.h>\n#include <stdarg.h>\n#include <stdlib.h>\n#include <string.h>\n#include <sys/ioctl.h>\n#include <sys/types.h>\n#include <termios.h>\n#include <time.h>\n#include <unistd.h>\n\n#define KILO_VERSION \"0.0.1\"\n#define KILO_TAB_STOP 8\n#define KILO_QUIT_TIMES 3\n\n#define CTRL_KEY(k) ((k) & 0x1f)\n\nenum editorKey {\n  BACKSPACE = 127,\n  ARROW_LEFT = 1000,\n  ARROW_RIGHT,\n  ARROW_UP,\n  ARROW_DOWN,\n  DEL_KEY,\n  HOME_KEY,\n  END_KEY,\n  PAGE_UP,\n  PAGE_DOWN\n};\n\ntypedef struct erow {\n  int size;\n  int rsize;\n  char *chars;\n  char *render;\n} erow;\n\nstruct editorConfig {\n  int cx, cy;\n  int rx;\n  int rowoff;\n  int coloff;\n  int screenrows;\n  int screencols;\n  int numrows;\n  erow *row;\n  int dirty;\n  char *filename;\n  char statusmsg[80];\n  time_t statusmsg_time;\n  struct termios orig_termios;\n};\n\nstruct editorConfig E;\n\n/*** prototypes ***/\n\nvoid editorSetStatusMessage(const char *fmt, ...);\nvoid editorRefreshScreen();\nchar *editorPrompt(char *prompt, void (*callback)(char *, int));\n\n/*** terminal ***/\n\nvoid die(const char *s) {\n  write(STDOUT_FILENO, \"\\\\x1b[2J\", 4);\n  write(STDOUT_FILENO, \"\\\\x1b[H\", 3);\n\n  perror(s);\n  exit(1);\n}\n\nint main() {\n  enableRawMode();\n  initEditor();\n  if (argc >= 2) {\n    editorOpen(argv[1]);\n  }\n\n  editorSetStatusMessage(\"HELP: Ctrl-S = save | Ctrl-Q = quit | Ctrl-F = find\");\n\n  while (1) {\n    editorRefreshScreen();\n    editorProcessKeypress();\n  }\n\n  return 0;\n}'''\n        \n        print(f\"Testing {filename} ({len(data)} bytes)\")\n        \n        # Send PUT command\n        put_command = f\"PUT {filename} {len(data)}\\n\"\n        print(f\"Sending PUT command: {repr(put_command)}\")\n        sock.send(put_command.encode('ascii'))\n        \n        # Send data in chunks to simulate network behavior\n        chunk_size = 1024\n        total_sent = 0\n        while total_sent < len(data):\n            chunk = data[total_sent:total_sent + chunk_size]\n            sock.send(chunk.encode('ascii'))\n            total_sent += len(chunk)\n            print(f\"Sent chunk: {len(chunk)} bytes (total: {total_sent}/{len(data)})\")\n            time.sleep(0.01)  # Small delay to simulate network latency\n        \n        # Read response\n        put_response = read_line(sock)\n        print(f\"PUT response: {repr(put_response)}\")\n        \n        if \"ERR incomplete data\" in put_response:\n            print(\"\u2717 Server reported incomplete data!\")\n        elif put_response.startswith(\"OK r\"):\n            print(\"\u2713 PUT successful\")\n            \n            read_line(sock)  # READY\n            \n            # Test retrieval\n            sock.send(f\"GET {filename}\\n\".encode('ascii'))\n            get_response = read_line(sock)\n            print(f\"GET response: {repr(get_response)}\")\n            \n            if get_response.startswith(\"OK \"):\n                length = int(get_response.split()[1])\n                file_data = read_bytes(sock, length)\n                \n                if file_data.decode('ascii') == data:\n                    print(\"\u2713 Data retrieval successful\")\n                else:\n                    print(\"\u2717 Data corruption detected\")\n                    print(f\"Expected length: {len(data)}\")\n                    print(f\"Retrieved length: {len(file_data)}\")\n        else:\n            print(f\"Unexpected response: {repr(put_response)}\")\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    import subprocess\n    import time\n    \n    # Start server\n    server_proc = subprocess.Popen(['python3', 'server.py', '9005'])\n    time.sleep(2)\n    \n    try:\n        test_chunked_upload()\n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_multiple_revisions.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport hashlib\n\ndef test_multiple_revisions():\n    \"\"\"Test how the server handles multiple revisions of the same file\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Testing Multiple Revisions ===\")\n    \n    # Test with reference server first\n    print(\"\\n--- Testing Reference Server Behavior ---\")\n    try:\n        ref_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        ref_sock.settimeout(10)\n        ref_sock.connect(('vcs.protohackers.com', 30307))\n        \n        read_line(ref_sock)  # Skip greeting\n        \n        filename = \"/test_revision.txt\"\n        \n        # Store multiple versions\n        versions = [\n            \"Version 1 content\",\n            \"Version 2 content - different\", \n            \"Version 3 content - final\"\n        ]\n        \n        revisions = []\n        for i, content in enumerate(versions, 1):\n            print(f\"Storing version {i}: {repr(content)}\")\n            ref_sock.send(f\"PUT {filename} {len(content)}\\n{content}\".encode('ascii'))\n            \n            put_resp = read_line(ref_sock)\n            print(f\"PUT response: {repr(put_resp)}\")\n            \n            if put_resp.startswith(\"OK r\"):\n                revision = put_resp.strip().split(\"r\")[1]\n                revisions.append(revision)\n            \n            # Wait for READY (if applicable)\n            try:\n                ready_resp = read_line(ref_sock)\n                if ready_resp.strip() != \"READY\":\n                    print(f\"Unexpected response: {repr(ready_resp)}\")\n            except:\n                pass\n        \n        print(f\"Revisions created: {revisions}\")\n        \n        # Test retrieval - should get latest version\n        print(f\"\\nTesting GET {filename}\")\n        ref_sock.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        # Read response carefully\n        try:\n            first_line = read_line(ref_sock)\n            print(f\"First line: {repr(first_line)}\")\n            \n            if first_line.strip() == \"READY\":\n                second_line = read_line(ref_sock)\n                print(f\"Second line: {repr(second_line)}\")\n                \n                if second_line.startswith(\"OK \"):\n                    length = int(second_line.split()[1])\n                    data = read_bytes(ref_sock, length)\n                    print(f\"Retrieved: {repr(data.decode('ascii'))}\")\n                    print(f\"Expected latest: {repr(versions[-1])}\")\n            elif first_line.startswith(\"OK \"):\n                length = int(first_line.split()[1])\n                data = read_bytes(ref_sock, length)\n                print(f\"Retrieved: {repr(data.decode('ascii'))}\")\n                print(f\"Expected latest: {repr(versions[-1])}\")\n                \n                # Check for READY after data\n                try:\n                    ready_resp = read_line(ref_sock)\n                    print(f\"After data: {repr(ready_resp)}\")\n                except:\n                    pass\n        except Exception as e:\n            print(f\"Error reading GET response: {e}\")\n        \n        ref_sock.close()\n        \n    except Exception as e:\n        print(f\"Reference server test error: {e}\")\n    \n    # Test our server\n    print(\"\\n--- Testing Our Server ---\")\n    try:\n        our_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        our_sock.settimeout(10)\n        our_sock.connect(('127.0.0.1', 9006))\n        \n        read_line(our_sock)  # Skip initial READY\n        \n        # Store the same sequence\n        our_revisions = []\n        for i, content in enumerate(versions, 1):\n            print(f\"Storing version {i}: {repr(content)}\")\n            our_sock.send(f\"PUT {filename} {len(content)}\\n{content}\".encode('ascii'))\n            \n            put_resp = read_line(our_sock)\n            print(f\"PUT response: {repr(put_resp)}\")\n            \n            if put_resp.startswith(\"OK r\"):\n                revision = put_resp.strip().split(\"r\")[1]\n                our_revisions.append(revision)\n            \n            read_line(our_sock)  # READY\n        \n        print(f\"Our revisions: {our_revisions}\")\n        \n        # Test retrieval\n        print(f\"\\nTesting GET {filename}\")\n        our_sock.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        get_resp = read_line(our_sock)\n        print(f\"GET response: {repr(get_resp)}\")\n        \n        if get_resp.startswith(\"OK \"):\n            length = int(get_resp.split()[1])\n            data = read_bytes(our_sock, length)\n            print(f\"Retrieved: {repr(data.decode('ascii'))}\")\n            print(f\"Expected latest: {repr(versions[-1])}\")\n        \n        read_line(our_sock)  # READY\n        our_sock.close()\n        \n    except Exception as e:\n        print(f\"Our server test error: {e}\")\n\ndef test_data_corruption():\n    \"\"\"Test for potential data corruption issues\"\"\"\n    \n    print(\"\\n=== Testing Data Corruption Issues ===\")\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9006))\n        \n        read_line(sock)  # Skip initial READY\n        \n        # Test with content that might cause encoding issues\n        filename = \"/kilo.0001/kilo.c\"\n        \n        # Simulate the kind of C code that might be in kilo.c\n        test_data = '''#include <stdio.h>\n#include <stdlib.h>\n#include <string.h>\n\n#define BUFFER_SIZE 1024\n\nint main(int argc, char *argv[]) {\n    printf(\"Hello, World!\\\\n\");\n    \n    // Test various characters that might cause issues\n    char *test_chars = \"\\\\x00\\\\x01\\\\x02\\\\x03\\\\xFF\";\n    \n    return 0;\n}\n'''\n        \n        print(f\"Testing {filename} with potential problematic content\")\n        print(f\"Data hash: {hashlib.md5(test_data.encode()).hexdigest()}\")\n        print(f\"Data length: {len(test_data)} bytes\")\n        \n        # Store file\n        sock.send(f\"PUT {filename} {len(test_data)}\\n{test_data}\".encode('ascii'))\n        \n        put_resp = read_line(sock)\n        print(f\"PUT: {repr(put_resp)}\")\n        read_line(sock)  # READY\n        \n        # Retrieve and verify\n        sock.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        get_resp = read_line(sock)\n        print(f\"GET: {repr(get_resp)}\")\n        \n        if get_resp.startswith(\"OK \"):\n            length = int(get_resp.split()[1])\n            retrieved_data = read_bytes(sock, length)\n            retrieved_hash = hashlib.md5(retrieved_data).hexdigest()\n            \n            print(f\"Retrieved hash: {retrieved_hash}\")\n            print(f\"Retrieved length: {len(retrieved_data)} bytes\")\n            \n            if retrieved_data == test_data.encode('ascii'):\n                print(\"\u2713 Data integrity perfect\")\n            else:\n                print(\"\u2717 Data corruption detected!\")\n                print(f\"First 100 bytes expected: {repr(test_data[:100])}\")\n                print(f\"First 100 bytes retrieved: {repr(retrieved_data[:100])}\")\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    import subprocess\n    import time\n    \n    # Start our server\n    server_proc = subprocess.Popen(['python3', 'server.py', '9006'])\n    time.sleep(2)\n    \n    try:\n        test_multiple_revisions()\n        test_data_corruption()\n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/verify_get_format.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef verify_get_response_format():\n    \"\"\"Verify our GET response format exactly matches the reference\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Verifying GET Response Format ===\")\n    \n    # Test reference server\n    print(\"\\n--- Reference Server ---\")\n    try:\n        ref_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        ref_sock.settimeout(10)\n        ref_sock.connect(('vcs.protohackers.com', 30307))\n        \n        read_line(ref_sock)  # Skip greeting\n        \n        filename = \"/format_test.txt\"\n        test_data = \"Hello World Test Data\"\n        \n        # Store file\n        ref_sock.send(f\"PUT {filename} {len(test_data)}\\n{test_data}\".encode('ascii'))\n        put_resp = read_line(ref_sock)\n        print(f\"PUT: {repr(put_resp)}\")\n        \n        try:\n            ready_resp = read_line(ref_sock)\n            print(f\"READY after PUT: {repr(ready_resp)}\")\n        except:\n            pass\n        \n        # GET file and capture exact response\n        ref_sock.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        # Read response byte by byte to see exact format\n        all_response_data = b\"\"\n        try:\n            for _ in range(1000):  # Safety limit\n                byte_data = ref_sock.recv(1)\n                if not byte_data:\n                    break\n                all_response_data += byte_data\n                \n                # Stop when we've read enough\n                if len(all_response_data) > len(test_data) + 50:\n                    break\n        except:\n            pass\n        \n        print(f\"Raw GET response: {repr(all_response_data)}\")\n        \n        # Try to parse it\n        response_str = all_response_data.decode('ascii', errors='replace')\n        print(f\"GET response decoded: {repr(response_str)}\")\n        \n        ref_sock.close()\n        \n    except Exception as e:\n        print(f\"Reference server error: {e}\")\n    \n    # Test our server\n    print(\"\\n--- Our Server ---\")\n    try:\n        our_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        our_sock.settimeout(10)\n        our_sock.connect(('127.0.0.1', 9007))\n        \n        read_line(our_sock)  # Skip initial READY\n        \n        # Store same file\n        our_sock.send(f\"PUT {filename} {len(test_data)}\\n{test_data}\".encode('ascii'))\n        put_resp = read_line(our_sock)\n        print(f\"PUT: {repr(put_resp)}\")\n        read_line(our_sock)  # READY\n        \n        # GET file and capture exact response\n        our_sock.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        # Read response byte by byte\n        all_response_data = b\"\"\n        try:\n            for _ in range(1000):  # Safety limit\n                byte_data = our_sock.recv(1)\n                if not byte_data:\n                    break\n                all_response_data += byte_data\n                \n                # Stop when we've read enough\n                if len(all_response_data) > len(test_data) + 50:\n                    break\n        except:\n            pass\n        \n        print(f\"Raw GET response: {repr(all_response_data)}\")\n        \n        # Try to parse it\n        response_str = all_response_data.decode('ascii', errors='replace')\n        print(f\"GET response decoded: {repr(response_str)}\")\n        \n        our_sock.close()\n        \n    except Exception as e:\n        print(f\"Our server error: {e}\")\n\ndef test_edge_case_data():\n    \"\"\"Test edge cases that might cause validation failures\"\"\"\n    \n    print(\"\\n=== Testing Edge Case Data ===\")\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9007))\n        \n        read_line(sock)  # Skip initial READY\n        \n        # Test cases that might cause issues\n        test_cases = [\n            (\"ends_with_newline\", \"data with newline\\n\"),\n            (\"no_newline\", \"data without newline\"),\n            (\"empty_file\", \"\"),\n            (\"just_newline\", \"\\n\"),\n            (\"multiple_newlines\", \"\\n\\n\\n\"),\n            (\"mixed_whitespace\", \" \\t\\r\\n\\t \"),\n        ]\n        \n        for name, data in test_cases:\n            filename = f\"/edge_case_{name}.txt\"\n            print(f\"\\nTesting {name}: {repr(data)}\")\n            \n            # Store\n            sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n            put_resp = read_line(sock)\n            print(f\"PUT: {repr(put_resp)}\")\n            read_line(sock)  # READY\n            \n            # Retrieve\n            sock.send(f\"GET {filename}\\n\".encode('ascii'))\n            get_resp = read_line(sock)\n            print(f\"GET: {repr(get_resp)}\")\n            \n            if get_resp.startswith(\"OK \"):\n                length = int(get_resp.split()[1])\n                retrieved = read_bytes(sock, length)\n                print(f\"Retrieved: {repr(retrieved)}\")\n                \n                if retrieved == data.encode('ascii'):\n                    print(\"\u2713 Match\")\n                else:\n                    print(\"\u2717 Mismatch!\")\n            \n            read_line(sock)  # READY\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    import subprocess\n    import time\n    \n    # Start our server\n    server_proc = subprocess.Popen(['python3', 'server.py', '9007'])\n    time.sleep(2)\n    \n    try:\n        verify_get_response_format()\n        test_edge_case_data()\n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        self.files = {}  # Shared persistent storage across all sessions\n        self.revision_counter = 0",
  "new_string": "        self.files = {}  # filename -> {revision: (data, revision)}\n        self.revision_counter = 0"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        # Store the file with thread safety\n        async with self.lock:\n            self.revision_counter += 1\n            self.files[filename] = (data, self.revision_counter)\n            revision = self.revision_counter",
  "new_string": "        # Store the file with thread safety - keep all versions\n        async with self.lock:\n            self.revision_counter += 1\n            if filename not in self.files:\n                self.files[filename] = {}\n            self.files[filename][self.revision_counter] = (data, self.revision_counter)\n            revision = self.revision_counter"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "    async def handle_get(self, writer, args):\n        \"\"\"Handle GET command\"\"\"\n        if not args:\n            await self.send_response(writer, \"ERR usage: GET file\")\n            return\n        \n        filename = args[0]\n        \n        if not self.is_valid_filename(filename):\n            await self.send_response(writer, \"ERR illegal file name\")\n            return\n        \n        # Retrieve file with thread safety\n        async with self.lock:\n            if filename not in self.files:\n                await self.send_response(writer, \"ERR no such file\")\n                return\n            \n            data, revision = self.files[filename]",
  "new_string": "    async def handle_get(self, writer, args):\n        \"\"\"Handle GET command - supports GET file [revision]\"\"\"\n        if not args:\n            await self.send_response(writer, \"ERR usage: GET file\")\n            return\n        \n        filename = args[0]\n        requested_revision = None\n        \n        # Check if revision is specified (e.g., \"GET /test r1\")\n        if len(args) > 1 and args[1].startswith('r'):\n            try:\n                requested_revision = int(args[1][1:])  # Remove 'r' prefix\n            except ValueError:\n                await self.send_response(writer, \"ERR invalid revision\")\n                return\n        \n        if not self.is_valid_filename(filename):\n            await self.send_response(writer, \"ERR illegal file name\")\n            return\n        \n        # Retrieve file with thread safety\n        async with self.lock:\n            if filename not in self.files:\n                await self.send_response(writer, \"ERR no such file\")\n                return\n            \n            file_versions = self.files[filename]\n            \n            if requested_revision is not None:\n                # Get specific revision\n                if requested_revision not in file_versions:\n                    await self.send_response(writer, \"ERR no such revision\")\n                    return\n                data, revision = file_versions[requested_revision]\n            else:\n                # Get latest revision\n                latest_revision = max(file_versions.keys())\n                data, revision = file_versions[latest_revision]"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "            # List all files (not just root directory files)\n            async with self.lock:\n                all_files = [(f, self.files[f][1]) for f in self.files.keys()]\n                await self.send_response(writer, f\"OK {len(all_files)}\")\n                for filename, revision in all_files:\n                    # Remove leading slash from filename and add revision\n                    display_name = filename[1:] if filename.startswith(\"/\") else filename\n                    await self.send_response(writer, f\"{display_name} r{revision}\")",
  "new_string": "            # List all files with their latest revisions\n            async with self.lock:\n                file_entries = []\n                for filename, versions in self.files.items():\n                    latest_revision = max(versions.keys())\n                    file_entries.append((filename, latest_revision))\n                \n                await self.send_response(writer, f\"OK {len(file_entries)}\")\n                for filename, revision in file_entries:\n                    # Remove leading slash from filename and add revision\n                    display_name = filename[1:] if filename.startswith(\"/\") else filename\n                    await self.send_response(writer, f\"{display_name} r{revision}\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_version_history.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_version_history():\n    \"\"\"Test the version history functionality\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Testing Version History Implementation ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9008))\n        \n        # Skip initial READY\n        read_line(sock)\n        \n        filename = \"/test\"\n        versions = [\"henk\", \"gijs\", \"piet\"]\n        \n        print(\"Storing multiple versions...\")\n        stored_revisions = []\n        \n        for i, content in enumerate(versions, 1):\n            print(f\"\\nStoring version {i}: {repr(content)}\")\n            sock.send(f\"PUT {filename} {len(content)}\\n{content}\".encode('ascii'))\n            \n            put_response = read_line(sock)\n            print(f\"PUT response: {repr(put_response)}\")\n            \n            if put_response.startswith(\"OK r\"):\n                revision = put_response.strip().split(\"r\")[1]\n                stored_revisions.append(revision)\n            \n            read_line(sock)  # READY\n        \n        print(f\"\\nStored revisions: {stored_revisions}\")\n        \n        # Test getting specific revisions\n        print(\"\\n=== Testing GET with specific revisions ===\")\n        \n        for i, (content, revision) in enumerate(zip(versions, stored_revisions)):\n            print(f\"\\nGetting revision r{revision}:\")\n            sock.send(f\"GET {filename} r{revision}\\n\".encode('ascii'))\n            \n            get_response = read_line(sock)\n            print(f\"GET response: {repr(get_response)}\")\n            \n            if get_response.startswith(\"OK \"):\n                length = int(get_response.split()[1])\n                data = read_bytes(sock, length)\n                retrieved = data.decode('ascii')\n                \n                print(f\"Expected: {repr(content)}\")\n                print(f\"Retrieved: {repr(retrieved)}\")\n                \n                if retrieved == content:\n                    print(f\"\u2713 Revision r{revision} correct\")\n                else:\n                    print(f\"\u2717 Revision r{revision} incorrect!\")\n            \n            read_line(sock)  # READY\n        \n        # Test getting latest version (without revision)\n        print(f\"\\n=== Testing GET without revision (latest) ===\")\n        sock.send(f\"GET {filename}\\n\".encode('ascii'))\n        \n        get_response = read_line(sock)\n        print(f\"GET response: {repr(get_response)}\")\n        \n        if get_response.startswith(\"OK \"):\n            length = int(get_response.split()[1])\n            data = read_bytes(sock, length)\n            retrieved = data.decode('ascii')\n            \n            print(f\"Expected latest: {repr(versions[-1])}\")\n            print(f\"Retrieved: {repr(retrieved)}\")\n            \n            if retrieved == versions[-1]:\n                print(\"\u2713 Latest version correct\")\n            else:\n                print(\"\u2717 Latest version incorrect!\")\n        \n        read_line(sock)  # READY\n        \n        # Test LIST shows latest revision\n        print(f\"\\n=== Testing LIST ===\")\n        sock.send(b\"LIST /\\n\")\n        \n        list_response = read_line(sock)\n        print(f\"LIST response: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            for i in range(count):\n                entry = read_line(sock)\n                print(f\"Entry: {repr(entry)}\")\n        \n        read_line(sock)  # READY\n        \n        # Test error cases\n        print(f\"\\n=== Testing Error Cases ===\")\n        \n        # Non-existent revision\n        sock.send(f\"GET {filename} r999\\n\".encode('ascii'))\n        error_response = read_line(sock)\n        print(f\"Non-existent revision: {repr(error_response)}\")\n        read_line(sock)  # READY\n        \n        # Invalid revision format\n        sock.send(f\"GET {filename} invalid\\n\".encode('ascii'))\n        invalid_response = read_line(sock)\n        print(f\"Invalid revision: {repr(invalid_response)}\")\n        read_line(sock)  # READY\n        \n        sock.close()\n        print(\"\\n\u2713 Version history test completed!\")\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    import subprocess\n    import time\n    \n    # Start server\n    server_proc = subprocess.Popen(['python3', 'server.py', '9008'])\n    time.sleep(2)\n    \n    try:\n        test_version_history()\n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        # Check if revision is specified (e.g., \"GET /test r1\")\n        if len(args) > 1 and args[1].startswith('r'):\n            try:\n                requested_revision = int(args[1][1:])  # Remove 'r' prefix\n            except ValueError:\n                await self.send_response(writer, \"ERR invalid revision\")\n                return",
  "new_string": "        # Check if revision is specified (e.g., \"GET /test r1\")\n        if len(args) > 1:\n            if args[1].startswith('r'):\n                try:\n                    requested_revision = int(args[1][1:])  # Remove 'r' prefix\n                except ValueError:\n                    await self.send_response(writer, \"ERR invalid revision\")\n                    return\n            else:\n                await self.send_response(writer, \"ERR invalid revision format\")\n                return"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "### GET (Retrieve File)  \n**Request:** `GET <filename>\\n`\n**Response:**\n- Success: `OK <length>\\n<data>READY\\n`\n- Error: `ERR no such file\\n`\n- Error: `ERR illegal file name\\n`\n\n**Description:**\n- Returns file content with length header\n- Format: First line contains \"OK <length>\", then <length> bytes of raw data, then \"READY\\n\"",
  "new_string": "### GET (Retrieve File)  \n**Request:** `GET <filename> [r<revision>]\\n`\n**Response:**\n- Success: `OK <length>\\n<data>READY\\n`\n- Error: `ERR no such file\\n`\n- Error: `ERR illegal file name\\n`\n- Error: `ERR no such revision\\n`\n- Error: `ERR invalid revision\\n`\n\n**Description:**\n- Returns file content with length header\n- If revision specified (e.g., \"r1\"), returns that specific version\n- If no revision specified, returns latest version\n- Format: First line contains \"OK <length>\", then <length> bytes of raw data, then \"READY\\n\""
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "## Protocol Characteristics\n- Line-based: Each command/response ends with \\n\n- Case-sensitive commands (HELP works, help doesn't)\n- Session-only storage: Files persist only within a single connection, NOT across connections\n- Binary data support: PUT accepts binary data based on length\n- Revision system: PUT returns revision numbers (format: \"OK r<number>\")\n- LIST functionality: Returns actual file listings with filenames and revision numbers",
  "new_string": "## Protocol Characteristics\n- Line-based: Each command/response ends with \\n\n- Case-sensitive commands (HELP works, help doesn't)\n- Persistent storage: Files persist across connections with full version history\n- Binary data support: PUT accepts binary data based on length\n- Revision system: PUT returns revision numbers (format: \"OK r<number>\")\n- Version history: All versions of files are kept, accessible by revision number\n- LIST functionality: Returns actual file listings with filenames and latest revision numbers"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "### Successful File Operations\n```\nClient: PUT /test.txt 5\\nhello\nServer: OK r1\\nREADY\\n\n\nClient: GET /test.txt\\n\nServer: OK 5\\nhelloREADY\\n\n\nClient: LIST /\\n\nServer: OK 1\\n/test.txt\\n\n```",
  "new_string": "### Successful File Operations\n```\nClient: PUT /test 4\\nhenk\nServer: OK r1\\nREADY\\n\n\nClient: PUT /test 4\\ngijs  \nServer: OK r2\\nREADY\\n\n\nClient: GET /test r1\\n\nServer: OK 4\\nhenkREADY\\n\n\nClient: GET /test\\n\nServer: OK 4\\ngijsREADY\\n\n\nClient: LIST /\\n\nServer: OK 1\\ntest r2\\nREADY\\n\n```"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "            # List all files with their latest revisions\n            async with self.lock:\n                file_entries = []\n                for filename, versions in self.files.items():\n                    latest_revision = max(versions.keys())\n                    file_entries.append((filename, latest_revision))\n                \n                await self.send_response(writer, f\"OK {len(file_entries)}\")\n                for filename, revision in file_entries:\n                    # Remove leading slash from filename and add revision\n                    display_name = filename[1:] if filename.startswith(\"/\") else filename\n                    await self.send_response(writer, f\"{display_name} r{revision}\")",
  "new_string": "            # List all files with their latest revisions, sorted alphabetically\n            async with self.lock:\n                file_entries = []\n                for filename, versions in self.files.items():\n                    latest_revision = max(versions.keys())\n                    # Remove leading slash from filename for display\n                    display_name = filename[1:] if filename.startswith(\"/\") else filename\n                    file_entries.append((display_name, latest_revision))\n                \n                # Sort entries alphabetically by filename\n                file_entries.sort(key=lambda x: x[0])\n                \n                await self.send_response(writer, f\"OK {len(file_entries)}\")\n                for display_name, revision in file_entries:\n                    await self.send_response(writer, f\"{display_name} r{revision}\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_sorted_list.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_sorted_list():\n    \"\"\"Test that LIST returns files in alphabetical order\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    print(\"=== Testing Sorted LIST Output ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9009))\n        \n        # Skip initial READY\n        read_line(sock)\n        \n        # Add files in a specific order that would test sorting\n        test_files = [\n            \"/test3.txt\",\n            \"/kilo.0001/LICENSE\", \n            \"/app.py\",\n            \"/zebra.txt\",\n            \"/banana.txt\",\n            \"/kilo.0001/README.md\",\n            \"/apple.txt\"\n        ]\n        \n        print(\"Adding files in non-alphabetical order...\")\n        for filename in test_files:\n            data = f\"content for {filename}\"\n            print(f\"Adding: {filename}\")\n            \n            sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n            put_response = read_line(sock)\n            print(f\"  PUT: {repr(put_response)}\")\n            read_line(sock)  # READY\n        \n        # Test LIST output\n        print(f\"\\nTesting LIST output (should be sorted)...\")\n        sock.send(b\"LIST /\\n\")\n        \n        list_response = read_line(sock)\n        print(f\"LIST response: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            print(f\"Files: {count}\")\n            \n            filenames = []\n            for i in range(count):\n                entry = read_line(sock)\n                filename = entry.strip().split()[0]  # Remove revision part\n                filenames.append(filename)\n                print(f\"  {i+1}: {filename}\")\n            \n            # Check if sorted\n            sorted_filenames = sorted(filenames)\n            print(f\"\\nExpected order: {sorted_filenames}\")\n            print(f\"Actual order:   {filenames}\")\n            \n            if filenames == sorted_filenames:\n                print(\"\u2713 LIST output is correctly sorted!\")\n            else:\n                print(\"\u2717 LIST output is NOT sorted correctly!\")\n                for i, (actual, expected) in enumerate(zip(filenames, sorted_filenames)):\n                    if actual != expected:\n                        print(f\"  Position {i}: got '{actual}', expected '{expected}'\")\n        \n        read_line(sock)  # READY\n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    import subprocess\n    import time\n    \n    # Start server\n    server_proc = subprocess.Popen(['python3', 'server.py', '9009'])\n    time.sleep(2)\n    \n    try:\n        test_sorted_list()\n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "**Format:** \n- Filenames are returned without leading \"/\" \n- Each file entry includes its revision number with \"r\" prefix",
  "new_string": "**Format:** \n- Filenames are returned without leading \"/\" \n- Each file entry includes its revision number with \"r\" prefix\n- Files are listed in alphabetical order by filename"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "            # List all files with their latest revisions, sorted alphabetically\n            async with self.lock:\n                file_entries = []\n                for filename, versions in self.files.items():\n                    latest_revision = max(versions.keys())\n                    # Remove leading slash from filename for display\n                    display_name = filename[1:] if filename.startswith(\"/\") else filename\n                    file_entries.append((display_name, latest_revision))\n                \n                # Sort entries alphabetically by filename\n                file_entries.sort(key=lambda x: x[0])\n                \n                await self.send_response(writer, f\"OK {len(file_entries)}\")\n                for display_name, revision in file_entries:\n                    await self.send_response(writer, f\"{display_name} r{revision}\")",
  "new_string": "            # List entries in root directory - show files and subdirectories\n            async with self.lock:\n                entries = set()  # Use set to avoid duplicates\n                \n                for filename in self.files.keys():\n                    # Remove leading slash for processing\n                    path = filename[1:] if filename.startswith(\"/\") else filename\n                    \n                    if \"/\" in path:\n                        # File is in a subdirectory - add the directory\n                        subdir = path.split(\"/\")[0]\n                        entries.add((subdir + \"/\", \"DIR\"))\n                    else:\n                        # File is in root - add the file with its latest revision\n                        versions = self.files[filename]\n                        latest_revision = max(versions.keys())\n                        entries.add((path, f\"r{latest_revision}\"))\n                \n                # Convert to list and sort alphabetically\n                entry_list = sorted(list(entries))\n                \n                await self.send_response(writer, f\"OK {len(entry_list)}\")\n                for name, info in entry_list:\n                    await self.send_response(writer, f\"{name} {info}\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_directory_list.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_directory_list():\n    \"\"\"Test LIST shows directories as DIR entries\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    print(\"=== Testing Directory LIST Behavior ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9010))\n        \n        # Skip initial READY\n        read_line(sock)\n        \n        # Add files in various locations\n        test_files = [\n            \"/root_file.txt\",           # Root level file\n            \"/kilo.0001/README.md\",     # File in kilo.0001 directory  \n            \"/kilo.0001/LICENSE\",       # Another file in kilo.0001 directory\n            \"/kilo.0001/kilo.c\",        # Third file in kilo.0001 directory\n            \"/another_root.py\",         # Another root level file\n            \"/project/main.c\",          # File in project directory\n            \"/project/utils.h\",         # Another file in project directory\n        ]\n        \n        print(\"Adding files in various directories...\")\n        for filename in test_files:\n            data = f\"content for {filename}\"\n            print(f\"Adding: {filename}\")\n            \n            sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n            put_response = read_line(sock)\n            print(f\"  PUT: {repr(put_response)}\")\n            read_line(sock)  # READY\n        \n        # Test LIST / output\n        print(f\"\\nTesting LIST / (should show directories as DIR)...\")\n        sock.send(b\"LIST /\\n\")\n        \n        list_response = read_line(sock)\n        print(f\"LIST response: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            print(f\"Entries: {count}\")\n            \n            entries = []\n            for i in range(count):\n                entry = read_line(sock)\n                entries.append(entry.strip())\n                print(f\"  {i+1}: {repr(entry.strip())}\")\n            \n            # Analyze entries\n            print(f\"\\nExpected behavior:\")\n            print(f\"  - Root files should show with revision (e.g., 'root_file.txt r1')\")\n            print(f\"  - Subdirectories should show as 'dirname/ DIR'\")\n            \n            root_files = [e for e in entries if not e.endswith(\" DIR\")]\n            directories = [e for e in entries if e.endswith(\" DIR\")]\n            \n            print(f\"\\nRoot files found: {len(root_files)}\")\n            for f in root_files:\n                print(f\"  {f}\")\n            \n            print(f\"\\nDirectories found: {len(directories)}\")\n            for d in directories:\n                print(f\"  {d}\")\n            \n            # Check expected results\n            expected_dirs = {\"kilo.0001/ DIR\", \"project/ DIR\"}\n            expected_root_files = 2  # root_file.txt and another_root.py\n            \n            found_dirs = set(directories)\n            \n            if found_dirs == expected_dirs:\n                print(\"\u2713 Directories correctly shown as DIR entries\")\n            else:\n                print(f\"\u2717 Directory mismatch! Expected: {expected_dirs}, Got: {found_dirs}\")\n            \n            if len(root_files) == expected_root_files:\n                print(\"\u2713 Correct number of root files shown\")\n            else:\n                print(f\"\u2717 Root file count mismatch! Expected: {expected_root_files}, Got: {len(root_files)}\")\n        \n        read_line(sock)  # READY\n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    import subprocess\n    import time\n    \n    # Start server\n    server_proc = subprocess.Popen(['python3', 'server.py', '9010'])\n    time.sleep(2)\n    \n    try:\n        test_directory_list()\n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "**Format:** \n- Filenames are returned without leading \"/\" \n- Each file entry includes its revision number with \"r\" prefix\n- Files are listed in alphabetical order by filename",
  "new_string": "**Format:** \n- Shows entries in the specified directory only (not recursive)\n- Root-level files: `filename r<revision>`\n- Subdirectories: `dirname/ DIR` \n- All entries are sorted alphabetically"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "**Example:**\n```\nLIST /\nOK 2\ntest.txt r1\ndata.dat r2\nREADY\n\n```",
  "new_string": "**Example:**\n```\nLIST /\nOK 3\nkilo.0001/ DIR\nproject/ DIR  \nroot_file.txt r1\nREADY\n\n```"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        if directory == \"/\":\n            # List entries in root directory - show files and subdirectories\n            async with self.lock:\n                entries = set()  # Use set to avoid duplicates\n                \n                for filename in self.files.keys():\n                    # Remove leading slash for processing\n                    path = filename[1:] if filename.startswith(\"/\") else filename\n                    \n                    if \"/\" in path:\n                        # File is in a subdirectory - add the directory\n                        subdir = path.split(\"/\")[0]\n                        entries.add((subdir + \"/\", \"DIR\"))\n                    else:\n                        # File is in root - add the file with its latest revision\n                        versions = self.files[filename]\n                        latest_revision = max(versions.keys())\n                        entries.add((path, f\"r{latest_revision}\"))\n                \n                # Convert to list and sort alphabetically\n                entry_list = sorted(list(entries))\n                \n                await self.send_response(writer, f\"OK {len(entry_list)}\")\n                for name, info in entry_list:\n                    await self.send_response(writer, f\"{name} {info}\")\n        else:\n            # For other directories, return error like reference server\n            await self.send_response(writer, \"ERR illegal dir name\")",
  "new_string": "        # Normalize directory path\n        if not directory.endswith(\"/\"):\n            directory = directory + \"/\"\n        if not directory.startswith(\"/\"):\n            directory = \"/\" + directory\n        \n        async with self.lock:\n            entries = set()  # Use set to avoid duplicates\n            \n            for filename in self.files.keys():\n                # Check if this file is in the requested directory\n                if filename.startswith(directory):\n                    # Get the relative path from the directory\n                    relative_path = filename[len(directory):]\n                    \n                    if \"/\" in relative_path:\n                        # File is in a subdirectory - add the subdirectory\n                        subdir = relative_path.split(\"/\")[0]\n                        entries.add((subdir + \"/\", \"DIR\"))\n                    else:\n                        # File is directly in this directory - add with revision\n                        versions = self.files[filename]\n                        latest_revision = max(versions.keys())\n                        entries.add((relative_path, f\"r{latest_revision}\"))\n            \n            # Convert to list and sort alphabetically\n            entry_list = sorted(list(entries))\n            \n            await self.send_response(writer, f\"OK {len(entry_list)}\")\n            for name, info in entry_list:\n                await self.send_response(writer, f\"{name} {info}\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_subdir_list.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_subdirectory_listing():\n    \"\"\"Test LIST command with subdirectories\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    print(\"=== Testing Subdirectory LIST Commands ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9011))\n        \n        # Skip initial READY\n        read_line(sock)\n        \n        # Add files in various locations to test subdirectory listing\n        test_files = [\n            \"/root_file.txt\",\n            \"/kilo.0001/README.md\",\n            \"/kilo.0001/LICENSE\", \n            \"/kilo.0001/kilo.c\",\n            \"/kilo.0001/docs/manual.txt\",\n            \"/kilo.0001/src/main.c\",\n            \"/kilo.0001/src/utils.h\",\n            \"/project/main.py\",\n            \"/project/config.json\"\n        ]\n        \n        print(\"Adding test files...\")\n        for filename in test_files:\n            data = f\"content for {filename}\"\n            sock.send(f\"PUT {filename} {len(data)}\\n{data}\".encode('ascii'))\n            put_response = read_line(sock)\n            print(f\"  {filename}: {repr(put_response)}\")\n            read_line(sock)  # READY\n        \n        # Test different LIST commands\n        list_commands = [\n            \"LIST /\",\n            \"LIST /kilo.0001\",\n            \"LIST /kilo.0001/\", \n            \"LIST /project\",\n            \"LIST /kilo.0001/src\",\n            \"LIST /kilo.0001/docs\",\n            \"LIST /nonexistent\"\n        ]\n        \n        for cmd in list_commands:\n            print(f\"\\n=== Testing: {cmd} ===\")\n            sock.send(f\"{cmd}\\n\".encode('ascii'))\n            \n            list_response = read_line(sock)\n            print(f\"Response: {repr(list_response)}\")\n            \n            if list_response.startswith(\"OK \"):\n                count = int(list_response.split()[1])\n                print(f\"Entries: {count}\")\n                \n                for i in range(count):\n                    entry = read_line(sock)\n                    print(f\"  {entry.strip()}\")\n            \n            read_line(sock)  # READY\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\ndef test_case_insensitive():\n    \"\"\"Test case-insensitive commands as mentioned in the error log\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    print(\"\\n=== Testing Case Sensitivity ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9011))\n        \n        # Skip initial READY\n        read_line(sock)\n        \n        # Test various case combinations\n        case_tests = [\n            \"LIST /\",\n            \"list /\", \n            \"LiST /\",\n            \"List /\",\n            \"HELP\",\n            \"help\",\n            \"HeLp\"\n        ]\n        \n        for cmd in case_tests:\n            print(f\"\\nTesting: {repr(cmd)}\")\n            sock.send(f\"{cmd}\\n\".encode('ascii'))\n            \n            response = read_line(sock)\n            print(f\"Response: {repr(response)}\")\n            \n            # Skip any additional response data for successful commands\n            if response.startswith(\"OK \"):\n                # For LIST, skip the entries\n                count = int(response.split()[1])\n                for _ in range(count):\n                    read_line(sock)\n            \n            read_line(sock)  # READY\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    import subprocess\n    import time\n    \n    # Start server\n    server_proc = subprocess.Popen(['python3', 'server.py', '9011'])\n    time.sleep(2)\n    \n    try:\n        test_subdirectory_listing()\n        test_case_insensitive()\n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_reference_case.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef test_reference_case_sensitivity():\n    \"\"\"Test case sensitivity on reference server\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    print(\"=== Testing Reference Server Case Sensitivity ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('vcs.protohackers.com', 30307))\n        \n        read_line(sock)  # Skip greeting\n        \n        # Test various case combinations\n        test_cases = [\n            \"HELP\",\n            \"help\", \n            \"Help\",\n            \"HeLp\",\n            \"LIST /\",\n            \"list /\",\n            \"List /\", \n            \"LiST /\"\n        ]\n        \n        for cmd in test_cases:\n            print(f\"\\nTesting: {repr(cmd)}\")\n            sock.send(f\"{cmd}\\n\".encode('ascii'))\n            \n            response = read_line(sock)\n            print(f\"Response: {repr(response)}\")\n            \n            # Handle different response types\n            if response.startswith(\"OK \") and \"usage:\" in response:\n                # HELP response - no additional data\n                pass\n            elif response.startswith(\"OK \") and response.split()[1].isdigit():\n                # LIST response - skip entries\n                count = int(response.split()[1])\n                for _ in range(count):\n                    entry = read_line(sock)\n                    print(f\"  Entry: {repr(entry.strip())}\")\n            elif response.startswith(\"ERR\"):\n                print(f\"  Error response\")\n            \n            # Try to read READY if it exists\n            try:\n                ready = read_line(sock)\n                if ready.strip() == \"READY\":\n                    print(f\"  READY: {repr(ready)}\")\n            except:\n                pass\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    test_reference_case_sensitivity()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "**Valid directories:** \n- \"/\" (root directory) - only confirmed valid directory\n- Other directories appear to be restricted",
  "new_string": "**Valid directories:** \n- \"/\" (root directory)  \n- Any subdirectory path (e.g., \"/kilo.0001\", \"/project/src\")\n- Non-existent directories return empty list (OK 0)"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/reverse.txt",
  "old_string": "## Protocol Characteristics\n- Line-based: Each command/response ends with \\n\n- Case-sensitive commands (HELP works, help doesn't)",
  "new_string": "## Protocol Characteristics\n- Line-based: Each command/response ends with \\n\n- Case-insensitive commands (HELP, help, HeLp all work)"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/debug_revision_storage.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef debug_revision_storage():\n    \"\"\"Debug revision storage and retrieval\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Debug Revision Storage ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9012))\n        \n        # Skip initial READY\n        read_line(sock)\n        \n        filename = \"/kilo.0001/LICENSE\"\n        \n        # Store multiple versions and track revisions\n        versions = [\n            \"License version 1\",\n            \"License version 2\", \n            \"License version 3\",\n            \"License version 4\",\n            \"License version 5\"\n        ]\n        \n        stored_revisions = []\n        \n        for i, content in enumerate(versions):\n            print(f\"\\nStoring version {i+1}: {repr(content)}\")\n            sock.send(f\"PUT {filename} {len(content)}\\n{content}\".encode('ascii'))\n            \n            put_response = read_line(sock)\n            print(f\"PUT response: {repr(put_response)}\")\n            \n            if put_response.startswith(\"OK r\"):\n                revision = int(put_response.strip().split(\"r\")[1])\n                stored_revisions.append(revision)\n                print(f\"Stored as revision: r{revision}\")\n            \n            read_line(sock)  # READY\n        \n        print(f\"\\nAll stored revisions: {stored_revisions}\")\n        \n        # Test retrieving each revision\n        print(f\"\\n=== Testing retrieval of all revisions ===\")\n        \n        for i, (content, revision) in enumerate(zip(versions, stored_revisions)):\n            print(f\"\\nTrying to GET revision r{revision}\")\n            sock.send(f\"GET {filename} r{revision}\\n\".encode('ascii'))\n            \n            get_response = read_line(sock)\n            print(f\"GET response: {repr(get_response)}\")\n            \n            if get_response.startswith(\"OK \"):\n                length = int(get_response.split()[1])\n                data = read_bytes(sock, length)\n                retrieved = data.decode('ascii')\n                \n                print(f\"Expected: {repr(content)}\")\n                print(f\"Retrieved: {repr(retrieved)}\")\n                \n                if retrieved == content:\n                    print(f\"\u2713 Revision r{revision} correct\")\n                else:\n                    print(f\"\u2717 Revision r{revision} data mismatch!\")\n            elif \"no such revision\" in get_response:\n                print(f\"\u2717 Revision r{revision} not found!\")\n            else:\n                print(f\"\u2717 Unexpected response: {repr(get_response)}\")\n            \n            read_line(sock)  # READY\n        \n        # Test LIST to see current state\n        print(f\"\\n=== Testing LIST ===\")\n        sock.send(b\"LIST /kilo.0001\\n\")\n        \n        list_response = read_line(sock)\n        print(f\"LIST response: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            for i in range(count):\n                entry = read_line(sock)\n                print(f\"Entry: {repr(entry.strip())}\")\n        \n        read_line(sock)  # READY\n        \n        # Test non-existent revision\n        print(f\"\\n=== Testing non-existent revision ===\")\n        sock.send(f\"GET {filename} r999\\n\".encode('ascii'))\n        \n        nonexist_response = read_line(sock)\n        print(f\"Non-existent revision: {repr(nonexist_response)}\")\n        read_line(sock)  # READY\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\ndef debug_server_internal_state():\n    \"\"\"Try to understand the server's internal state\"\"\"\n    \n    print(\"\\n=== Debug Server Internal State ===\")\n    \n    # Let's create a simple test to see if there's a pattern\n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9012))\n        \n        read_line(sock)  # READY\n        \n        # Test with a different file to see if the issue is file-specific\n        test_files = [\n            \"/test1.txt\",\n            \"/dir/test2.txt\", \n            \"/dir/subdir/test3.txt\"\n        ]\n        \n        for filename in test_files:\n            print(f\"\\nTesting with {filename}\")\n            \n            # Store 3 versions\n            for i in range(1, 4):\n                content = f\"Content {i} for {filename}\"\n                sock.send(f\"PUT {filename} {len(content)}\\n{content}\".encode('ascii'))\n                \n                put_resp = read_line(sock)\n                print(f\"  PUT {i}: {repr(put_resp)}\")\n                read_line(sock)  # READY\n                \n                if put_resp.startswith(\"OK r\"):\n                    revision = int(put_resp.strip().split(\"r\")[1])\n                    \n                    # Immediately try to GET this revision back\n                    sock.send(f\"GET {filename} r{revision}\\n\".encode('ascii'))\n                    get_resp = read_line(sock)\n                    \n                    if get_resp.startswith(\"OK \"):\n                        print(f\"    \u2713 r{revision} retrievable immediately\")\n                    else:\n                        print(f\"    \u2717 r{revision} NOT retrievable: {repr(get_resp)}\")\n                    \n                    read_line(sock)  # READY or data + READY\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    import subprocess\n    import time\n    \n    # Start server\n    server_proc = subprocess.Popen(['python3', 'server.py', '9012'])\n    time.sleep(2)\n    \n    try:\n        debug_revision_storage()\n        debug_server_internal_state()\n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/debug_specific_case.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef debug_specific_scenario():\n    \"\"\"Debug the specific scenario from user logs\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Debug Specific User Scenario ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9012))\n        \n        read_line(sock)  # READY\n        \n        filename = \"/kilo.0001/LICENSE\"\n        \n        # Store many versions to simulate reaching r94\n        print(f\"Storing many versions to reach high revision numbers...\")\n        \n        stored_revisions = []\n        target_revision = 38\n        final_revision = 94\n        \n        # Store enough versions to get to r94, but track which ones we store\n        for i in range(1, final_revision + 1):\n            content = f\"LICENSE content version {i}\"\n            sock.send(f\"PUT {filename} {len(content)}\\\\n{content}\".encode('ascii'))\n            \n            put_response = read_line(sock)\n            if i <= 5 or i == target_revision or i >= final_revision - 2:\n                print(f\"  Version {i}: {repr(put_response)}\")\n            \n            if put_response.startswith(\"OK r\"):\n                revision = int(put_response.strip().split(\"r\")[1])\n                stored_revisions.append(revision)\n                if revision != i:\n                    print(f\"WARNING: Expected r{i} but got r{revision}\")\n            \n            read_line(sock)  # READY\n        \n        print(f\"\\\\nStored {len(stored_revisions)} revisions, latest: r{max(stored_revisions)}\")\n        \n        # Test LIST\n        print(f\"\\\\n=== Testing LIST /kilo.0001 ===\")\n        sock.send(b\"LIST /kilo.0001\\\\n\")\n        \n        list_response = read_line(sock)\n        print(f\"LIST response: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            for i in range(count):\n                entry = read_line(sock)\n                print(f\"Entry: {repr(entry.strip())}\")\n        \n        read_line(sock)  # READY\n        \n        # Test specific GET r38\n        print(f\"\\\\n=== Testing GET {filename} r{target_revision} ===\")\n        sock.send(f\"GET {filename} r{target_revision}\\\\n\".encode('ascii'))\n        \n        get_response = read_line(sock)\n        print(f\"GET r{target_revision} response: {repr(get_response)}\")\n        \n        if get_response.startswith(\"OK \"):\n            length = int(get_response.split()[1])\n            data = read_bytes(sock, length)\n            retrieved = data.decode('ascii')\n            print(f\"Retrieved data: {repr(retrieved)}\")\n        elif \"no such revision\" in get_response:\n            print(f\"\u2717 Revision r{target_revision} not found!\")\n            \n            # Let's check what revisions ARE available\n            print(f\"\\\\n=== Debugging: Check available revisions ===\")\n            \n            # Test a few revisions around r38\n            test_revisions = [35, 36, 37, 38, 39, 40, 90, 91, 92, 93, 94]\n            for test_rev in test_revisions:\n                read_line(sock)  # READY\n                sock.send(f\"GET {filename} r{test_rev}\\\\n\".encode('ascii'))\n                test_response = read_line(sock)\n                \n                if test_response.startswith(\"OK \"):\n                    print(f\"  r{test_rev}: EXISTS\")\n                    # Skip reading the data\n                    length = int(test_response.split()[1])\n                    read_bytes(sock, length)\n                else:\n                    print(f\"  r{test_rev}: {test_response.strip()}\")\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    import subprocess\n    import time\n    \n    # Start server\n    server_proc = subprocess.Popen(['python3', 'server.py', '9012'])\n    time.sleep(2)\n    \n    try:\n        debug_specific_scenario()\n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/debug_concurrent.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport threading\nimport time\n\ndef client_session(client_id, filename, num_puts):\n    \"\"\"Simulate a client session storing multiple versions\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9013))\n        \n        read_line(sock)  # READY\n        \n        stored_revisions = []\n        \n        for i in range(num_puts):\n            content = f\"Content from client {client_id}, version {i+1}\"\n            sock.send(f\"PUT {filename} {len(content)}\\\\n{content}\".encode('ascii'))\n            \n            put_response = read_line(sock)\n            print(f\"Client {client_id}, PUT {i+1}: {repr(put_response)}\")\n            \n            if put_response.startswith(\"OK r\"):\n                revision = int(put_response.strip().split(\"r\")[1])\n                stored_revisions.append(revision)\n            \n            read_line(sock)  # READY\n            time.sleep(0.1)  # Small delay\n        \n        print(f\"Client {client_id} stored revisions: {stored_revisions}\")\n        \n        # Try to GET one of our middle revisions\n        if len(stored_revisions) >= 3:\n            test_revision = stored_revisions[1]  # Second revision we stored\n            print(f\"Client {client_id} testing GET r{test_revision}\")\n            \n            sock.send(f\"GET {filename} r{test_revision}\\\\n\".encode('ascii'))\n            get_response = read_line(sock)\n            \n            if get_response.startswith(\"OK \"):\n                print(f\"Client {client_id}: r{test_revision} exists\")\n            else:\n                print(f\"Client {client_id}: r{test_revision} ERROR: {repr(get_response)}\")\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Client {client_id} error: {e}\")\n\ndef debug_concurrent_clients():\n    \"\"\"Test what happens with concurrent clients\"\"\"\n    \n    print(\"=== Testing Concurrent Client Scenario ===\")\n    \n    filename = \"/kilo.0001/LICENSE\"\n    \n    # Start 3 clients that each store 5 versions\n    threads = []\n    for client_id in range(1, 4):\n        thread = threading.Thread(target=client_session, args=(client_id, filename, 5))\n        threads.append(thread)\n        thread.start()\n        time.sleep(0.2)  # Stagger start times slightly\n    \n    # Wait for all clients to finish\n    for thread in threads:\n        thread.join()\n    \n    # Now connect and check the final state\n    print(\"\\\\n=== Final State Check ===\")\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9013))\n        \n        read_line(sock)  # READY\n        \n        # Check LIST\n        sock.send(b\"LIST /kilo.0001\\\\n\")\n        list_response = read_line(sock)\n        print(f\"LIST response: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            for i in range(count):\n                entry = read_line(sock)\n                print(f\"  Entry: {repr(entry.strip())}\")\n        \n        read_line(sock)  # READY\n        \n        # Test some random revisions to see what exists\n        test_revisions = [1, 3, 5, 7, 9, 12, 15]\n        for rev in test_revisions:\n            sock.send(f\"GET {filename} r{rev}\\\\n\".encode('ascii'))\n            get_response = read_line(sock)\n            \n            if get_response.startswith(\"OK \"):\n                print(f\"r{rev}: EXISTS\")\n                # Skip data\n                length = int(get_response.split()[1])\n                sock.recv(length)\n            else:\n                print(f\"r{rev}: {get_response.strip()}\")\n            \n            read_line(sock)  # READY\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Final check error: {e}\")\n\nif __name__ == \"__main__\":\n    import subprocess\n    \n    # Start server\n    server_proc = subprocess.Popen(['python3', 'server.py', '9013'])\n    time.sleep(2)\n    \n    try:\n        debug_concurrent_clients()\n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        try:\n            while True:\n                # Send READY at the beginning of each loop iteration\n                await self.send_response(writer, \"READY\")\n                \n                # Read command\n                line = await reader.readline()\n                if not line:\n                    break\n                \n                command = line.decode('ascii', errors='replace').strip()\n                if not command:\n                    continue\n                \n                print(f\"Command from {client_addr}: {repr(command)}\")\n                \n                # Parse and handle command\n                await self.handle_command(reader, writer, command)",
  "new_string": "        try:\n            # Send initial READY\n            await self.send_response(writer, \"READY\")\n            \n            while True:\n                # Read command\n                line = await reader.readline()\n                if not line:\n                    break\n                \n                command = line.decode('ascii', errors='replace').strip()\n                if not command:\n                    continue\n                \n                print(f\"Command from {client_addr}: {repr(command)}\")\n                \n                # Parse and handle command\n                await self.handle_command(reader, writer, command)\n                \n                # Send READY after handling command\n                await self.send_response(writer, \"READY\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/debug_simple.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\n\ndef simple_revision_test():\n    \"\"\"Simple test to verify revision storage logic\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Simple Revision Storage Test ===\")\n    \n    try:\n        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9014))\n        \n        read_line(sock)  # READY\n        \n        filename = \"/kilo.0001/LICENSE\"\n        \n        # Store exactly 10 versions and track what we get\n        print(\"Storing 10 versions...\")\n        expected_revisions = []\n        \n        for i in range(1, 11):\n            content = f\"Version {i} content\"\n            sock.send(f\"PUT {filename} {len(content)}\\\\n{content}\".encode('ascii'))\n            \n            put_response = read_line(sock)\n            print(f\"PUT {i}: {repr(put_response)}\")\n            \n            if put_response.startswith(\"OK r\"):\n                revision_num = int(put_response.strip().split(\"r\")[1])\n                expected_revisions.append(revision_num)\n            \n            read_line(sock)  # READY\n        \n        print(f\"\\\\nExpected revisions: {expected_revisions}\")\n        \n        # Check LIST output\n        print(\"\\\\n=== LIST Check ===\")\n        sock.send(b\"LIST /kilo.0001\\\\n\")\n        list_response = read_line(sock)\n        print(f\"LIST response: {repr(list_response)}\")\n        \n        if list_response.startswith(\"OK \"):\n            count = int(list_response.split()[1])\n            for i in range(count):\n                entry = read_line(sock)\n                print(f\"LIST entry: {repr(entry.strip())}\")\n        \n        read_line(sock)  # READY\n        \n        # Now try to GET each revision we stored\n        print(\"\\\\n=== GET Each Stored Revision ===\")\n        for i, expected_rev in enumerate(expected_revisions):\n            sock.send(f\"GET {filename} r{expected_rev}\\\\n\".encode('ascii'))\n            get_response = read_line(sock)\n            \n            if get_response.startswith(\"OK \"):\n                length = int(get_response.split()[1])\n                data = read_bytes(sock, length)\n                content = data.decode('ascii')\n                expected_content = f\"Version {i+1} content\"\n                \n                if content == expected_content:\n                    print(f\"\u2713 r{expected_rev}: {repr(content)}\")\n                else:\n                    print(f\"\u2717 r{expected_rev}: Expected {repr(expected_content)}, got {repr(content)}\")\n            else:\n                print(f\"\u2717 r{expected_rev}: {get_response.strip()}\")\n            \n            read_line(sock)  # READY\n        \n        # Test a revision that should NOT exist\n        print(\"\\\\n=== Test Non-existent Revision ===\")\n        sock.send(f\"GET {filename} r999\\\\n\".encode('ascii'))\n        nonexist_response = read_line(sock)\n        print(f\"r999: {repr(nonexist_response.strip())}\")\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    import subprocess\n    import time\n    \n    # Start server\n    server_proc = subprocess.Popen(['python3', 'server.py', '9014'])\n    time.sleep(2)\n    \n    try:\n        simple_revision_test()\n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "command": "python3 -c \"\nimport socket\nsock = socket.socket()\nsock.settimeout(2)\ntry:\n    sock.connect(('127.0.0.1', 8080))\n    print('Connection successful')\n    sock.close()\nexcept Exception as e:\n    print(f'Connection failed: {e}')\n\"",
  "description": "Test basic server connectivity"
}

{
  "command": "python3 -c \"\nimport socket\nimport time\n\ndef test_server():\n    sock = socket.socket()\n    sock.settimeout(5)\n    try:\n        sock.connect(('127.0.0.1', 9015))\n        print('Connected')\n        \n        # Read first line\n        line = ''\n        while True:\n            char = sock.recv(1).decode('ascii')\n            if not char or char == '\\n':\n                break\n            line += char\n        print(f'Server greeting: {repr(line)}')\n        \n        # Send HELP\n        sock.send(b'HELP\\n')\n        \n        # Read response\n        line = ''\n        while True:\n            char = sock.recv(1).decode('ascii')\n            if not char or char == '\\n':\n                break\n            line += char\n        print(f'HELP response: {repr(line)}')\n        \n        sock.close()\n        \n    except Exception as e:\n        print(f'Error: {e}')\n\ntest_server()\n\"",
  "description": "Test server with simple client"
}

{
  "command": "python3 -c \"\nimport socket\n\ndef read_line(sock):\n    line = ''\n    while True:\n        char = sock.recv(1).decode('ascii', errors='replace')\n        if not char:\n            break\n        line += char\n        if char == '\\n':\n            break\n    return line\n\ndef read_bytes(sock, length):\n    data = b''\n    while len(data) < length:\n        chunk = sock.recv(length - len(data))\n        if not chunk:\n            break\n        data += chunk\n    return data\n\nsock = socket.socket()\nsock.settimeout(10)\nsock.connect(('127.0.0.1', 9015))\n\nread_line(sock)  # READY\n\n# Store several versions of the same file to test revision tracking\nfilename = '/kilo.0001/LICENSE'\nrevisions = []\n\nprint('Storing multiple versions...')\nfor i in range(1, 6):\n    content = f'LICENSE content version {i}'\n    sock.send(f'PUT {filename} {len(content)}\\\\n{content}'.encode('ascii'))\n    \n    response = read_line(sock)\n    print(f'Version {i}: {response.strip()}')\n    \n    if response.startswith('OK r'):\n        rev = int(response.strip().split('r')[1])\n        revisions.append(rev)\n    \n    read_line(sock)  # READY\n\nprint(f'Stored revisions: {revisions}')\n\n# Test LIST\nprint('\\\\nTesting LIST...')\nsock.send(b'LIST /kilo.0001\\\\n')\nlist_resp = read_line(sock)\nprint(f'LIST response: {list_resp.strip()}')\n\nif list_resp.startswith('OK '):\n    count = int(list_resp.split()[1])\n    for i in range(count):\n        entry = read_line(sock)\n        print(f'  {entry.strip()}')\n\nread_line(sock)  # READY\n\n# Test GET for each stored revision\nprint('\\\\nTesting GET for each revision...')\nfor rev in revisions:\n    sock.send(f'GET {filename} r{rev}\\\\n'.encode('ascii'))\n    get_resp = read_line(sock)\n    \n    if get_resp.startswith('OK '):\n        print(f'r{rev}: EXISTS')\n        length = int(get_resp.split()[1])\n        data = read_bytes(sock, length)\n    else:\n        print(f'r{rev}: {get_resp.strip()}')\n    \n    read_line(sock)  # READY\n\nsock.close()\n\"",
  "description": "Test revision storage directly"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "edits": [
    {
      "old_string": "import asyncio\nimport os\nimport sys\nfrom pathlib import Path",
      "new_string": "import asyncio\nimport os\nimport sys\nimport threading\nfrom pathlib import Path"
    },
    {
      "old_string": "    def __init__(self, host='0.0.0.0', port=8080):\n        self.host = host\n        self.port = port\n        self.files = {}  # filename -> {revision: (data, revision)}\n        self.revision_counter = 0\n        self.lock = asyncio.Lock()  # For thread-safe access",
      "new_string": "    def __init__(self, host='0.0.0.0', port=8080):\n        self.host = host\n        self.port = port\n        self.files = {}  # filename -> {revision: (data, revision)}\n        self.revision_counter = 0\n        self.lock = asyncio.Lock()  # For thread-safe access\n        self.active_connections = set()  # Track active client connections"
    },
    {
      "old_string": "    async def handle_client(self, reader, writer):\n        \"\"\"Handle a client connection\"\"\"\n        client_addr = writer.get_extra_info('peername')\n        print(f\"Client connected: {client_addr}\")",
      "new_string": "    async def handle_client(self, reader, writer):\n        \"\"\"Handle a client connection\"\"\"\n        client_addr = writer.get_extra_info('peername')\n        print(f\"Client connected: {client_addr}\")\n        self.active_connections.add(client_addr)"
    },
    {
      "old_string": "        finally:\n            writer.close()\n            await writer.wait_closed()\n            print(f\"Client disconnected: {client_addr}\")",
      "new_string": "        finally:\n            writer.close()\n            await writer.wait_closed()\n            self.active_connections.discard(client_addr)\n            print(f\"Client disconnected: {client_addr}\")"
    },
    {
      "old_string": "        # Allow any absolute path format\n        return True\n    \n    async def run(self):",
      "new_string": "        # Allow any absolute path format\n        return True\n    \n    def print_status(self):\n        \"\"\"Print server status information\"\"\"\n        print(f\"\\n=== VCS Server Status ===\")\n        print(f\"Port: {self.port}\")\n        print(f\"Active connections: {len(self.active_connections)}\")\n        if self.active_connections:\n            for addr in sorted(self.active_connections):\n                print(f\"  - {addr}\")\n        \n        print(f\"\\nTotal files: {len(self.files)}\")\n        print(f\"Total revisions: {self.revision_counter}\")\n        \n        if self.files:\n            print(f\"\\nFiles by directory:\")\n            dirs = {}\n            for filename in sorted(self.files.keys()):\n                if \"/\" in filename[1:]:  # Skip leading /\n                    dirname = \"/\" + filename[1:].split(\"/\")[0]\n                else:\n                    dirname = \"/\"\n                \n                if dirname not in dirs:\n                    dirs[dirname] = []\n                dirs[dirname].append(filename)\n            \n            for dirname in sorted(dirs.keys()):\n                print(f\"  {dirname}/\")\n                for filename in dirs[dirname]:\n                    versions = self.files[filename]\n                    latest_rev = max(versions.keys())\n                    print(f\"    {filename[len(dirname):].lstrip('/')} (r{min(versions.keys())}-r{latest_rev}, {len(versions)} versions)\")\n    \n    def print_file_details(self, filename=None):\n        \"\"\"Print detailed file information\"\"\"\n        if filename:\n            if filename in self.files:\n                versions = self.files[filename]\n                print(f\"\\n=== File Details: {filename} ===\")\n                print(f\"Total versions: {len(versions)}\")\n                print(f\"Revisions: r{min(versions.keys())} - r{max(versions.keys())}\")\n                \n                for rev in sorted(versions.keys()):\n                    data, _ = versions[rev]\n                    size = len(data)\n                    preview = data[:50].decode('ascii', errors='replace')\n                    if len(data) > 50:\n                        preview += \"...\"\n                    print(f\"  r{rev}: {size} bytes - {repr(preview)}\")\n            else:\n                print(f\"File not found: {filename}\")\n        else:\n            print(f\"\\n=== All Files ===\")\n            for filename in sorted(self.files.keys()):\n                versions = self.files[filename]\n                latest_rev = max(versions.keys())\n                total_size = sum(len(data) for data, _ in versions.values())\n                print(f\"{filename} - {len(versions)} versions, r{min(versions.keys())}-r{latest_rev}, {total_size} total bytes\")\n    \n    def start_status_input(self):\n        \"\"\"Start status input thread\"\"\"\n        def input_handler():\n            print(\"\\n=== Server Status Interface ===\")\n            print(\"Commands:\")\n            print(\"  status - Show server status\")\n            print(\"  files [filename] - Show file details\")\n            print(\"  clear - Clear screen\")\n            print(\"  help - Show this help\")\n            print(\"  quit - Stop server\")\n            print(\"\")\n            \n            while True:\n                try:\n                    cmd = input(\"> \").strip().lower()\n                    \n                    if cmd == \"quit\" or cmd == \"exit\":\n                        print(\"Stopping server...\")\n                        os._exit(0)\n                    elif cmd == \"status\":\n                        self.print_status()\n                    elif cmd.startswith(\"files\"):\n                        parts = cmd.split(\" \", 1)\n                        filename = parts[1] if len(parts) > 1 else None\n                        self.print_file_details(filename)\n                    elif cmd == \"clear\":\n                        os.system('clear' if os.name == 'posix' else 'cls')\n                    elif cmd == \"help\":\n                        print(\"Commands: status, files [filename], clear, help, quit\")\n                    elif cmd == \"\":\n                        continue\n                    else:\n                        print(f\"Unknown command: {cmd}. Type 'help' for commands.\")\n                        \n                except (EOFError, KeyboardInterrupt):\n                    print(\"\\nStopping server...\")\n                    os._exit(0)\n                except Exception as e:\n                    print(f\"Error: {e}\")\n        \n        thread = threading.Thread(target=input_handler, daemon=True)\n        thread.start()\n    \n    async def run(self):"
    },
    {
      "old_string": "    async def run(self):\n        \"\"\"Run the server\"\"\"\n        server = await asyncio.start_server(\n            self.handle_client, self.host, self.port\n        )\n        \n        addr = server.sockets[0].getsockname()\n        print(f\"VCS Server running on {addr[0]}:{addr[1]}\")\n        \n        async with server:\n            await server.serve_forever()",
      "new_string": "    async def run(self):\n        \"\"\"Run the server\"\"\"\n        server = await asyncio.start_server(\n            self.handle_client, self.host, self.port\n        )\n        \n        addr = server.sockets[0].getsockname()\n        print(f\"VCS Server running on {addr[0]}:{addr[1]}\")\n        \n        # Start status input interface\n        self.start_status_input()\n        \n        async with server:\n            await server.serve_forever()"
    }
  ]
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        thread = threading.Thread(target=input_handler, daemon=True)\n        thread.start()",
  "new_string": "        thread = threading.Thread(target=input_handler, daemon=False)\n        thread.start()\n        return thread"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        # Start status input interface\n        self.start_status_input()\n        \n        async with server:\n            await server.serve_forever()",
  "new_string": "        # Start status input interface\n        input_thread = self.start_status_input()\n        \n        try:\n            async with server:\n                await server.serve_forever()\n        except Exception:\n            input_thread.join(timeout=1)"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/demo_status.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport subprocess\nimport time\nimport os\nimport signal\n\ndef populate_server():\n    \"\"\"Populate server with test data\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    print(\"=== Populating Server with Test Data ===\")\n    \n    # Connect to server\n    sock = socket.socket()\n    sock.settimeout(10)\n    sock.connect(('127.0.0.1', 9022))\n    \n    read_line(sock)  # READY\n    \n    # Add various files in different directories\n    test_files = [\n        (\"/README.md\", \"# Main README\\nThis is the main project README.\"),\n        (\"/kilo.0001/LICENSE\", \"MIT License\\nCopyright (c) 2023\"),\n        (\"/kilo.0001/kilo.c\", \"#include <stdio.h>\\nint main() { return 0; }\"),\n        (\"/kilo.0001/README.md\", \"# Kilo Editor\\nA small text editor.\"),\n        (\"/project/main.py\", \"#!/usr/bin/env python3\\nprint('Hello World')\"),\n        (\"/project/config.json\", '{\"name\": \"test\", \"version\": \"1.0\"}'),\n        (\"/project/src/utils.py\", \"def helper(): pass\"),\n        (\"/docs/manual.txt\", \"User Manual\\n============\"),\n    ]\n    \n    for filename, content in test_files:\n        print(f\"Adding {filename}...\")\n        sock.send(f\"PUT {filename} {len(content)}\\\\n{content}\".encode('ascii'))\n        response = read_line(sock)\n        read_line(sock)  # READY\n    \n    # Add multiple versions of some files\n    print(\"\\\\nAdding multiple versions...\")\n    for i in range(2, 5):\n        content = f\"MIT License\\\\nCopyright (c) 202{i}\\\\nVersion {i}\"\n        sock.send(f\"PUT /kilo.0001/LICENSE {len(content)}\\\\n{content}\".encode('ascii'))\n        response = read_line(sock)\n        print(f\"  Version {i}: {response.strip()}\")\n        read_line(sock)  # READY\n    \n    sock.close()\n    print(\"\\\\nServer populated with test data!\")\n\ndef demo_status_commands():\n    \"\"\"Demonstrate status commands by connecting to server\"\"\"\n    print(\"\\\\n=== Server Status Demo ===\")\n    print(\"The server is now running with an interactive status interface.\")\n    print(\"You can connect to it and use these commands:\")\n    print(\"  status - Show server status\")\n    print(\"  files - Show all files\")\n    print(\"  files /kilo.0001/LICENSE - Show specific file details\")\n    print(\"  help - Show help\")\n    print(\"  quit - Stop server\")\n    print(\"\\\\nTo test manually, run: python3 server.py 9022\")\n    print(\"Then type the commands above in the server console.\")\n\nif __name__ == \"__main__\":\n    # Start server in background\n    print(\"Starting VCS Server with status interface...\")\n    server_proc = subprocess.Popen(['python3', 'server.py', '9022'])\n    time.sleep(2)\n    \n    try:\n        populate_server()\n        demo_status_commands()\n        \n        print(\"\\\\nPress Ctrl+C to stop the demo...\")\n        time.sleep(30)  # Keep running for demo\n        \n    except KeyboardInterrupt:\n        print(\"\\\\nDemo stopped.\")\n    finally:\n        server_proc.terminate()\n        try:\n            server_proc.wait(timeout=5)\n        except subprocess.TimeoutExpired:\n            server_proc.kill()\n            server_proc.wait()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_status_interface.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport time\n\ndef test_server_with_status():\n    \"\"\"Test server and demonstrate the status output\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    print(\"=== Testing Server with Status Interface ===\")\n    print(\"This will connect to the server and add some test data.\")\n    print(\"Then you can use the server's status interface to inspect the data.\\\\n\")\n    \n    # Connect and add test data\n    try:\n        sock = socket.socket()\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 8080))  # Default port\n        \n        read_line(sock)  # READY\n        \n        # Add some test files\n        test_data = [\n            (\"/test.txt\", \"Hello World\"),\n            (\"/kilo.0001/main.c\", \"#include <stdio.h>\\\\nint main() { return 0; }\"),\n            (\"/kilo.0001/README\", \"Kilo text editor\"),\n            (\"/project/config.json\", '{\"name\": \"test\"}'),\n        ]\n        \n        print(\"Adding test files to server...\")\n        for filename, content in test_data:\n            sock.send(f\"PUT {filename} {len(content)}\\\\n{content}\".encode('ascii'))\n            response = read_line(sock)\n            print(f\"  {filename}: {response.strip()}\")\n            read_line(sock)  # READY\n        \n        # Add multiple versions of one file\n        print(\"\\\\nAdding multiple versions of /test.txt...\")\n        for i in range(2, 4):\n            content = f\"Hello World - Version {i}\"\n            sock.send(f\"PUT /test.txt {len(content)}\\\\n{content}\".encode('ascii'))\n            response = read_line(sock)\n            print(f\"  Version {i}: {response.strip()}\")\n            read_line(sock)  # READY\n        \n        sock.close()\n        \n        print(\"\\\\n\" + \"=\"*50)\n        print(\"SUCCESS: Test data added to server!\")\n        print(\"=\"*50)\n        print()\n        print(\"Now you can use the server status interface:\")\n        print(\"  Type 'status' to see server status\")\n        print(\"  Type 'files' to see all files\")\n        print(\"  Type 'files /test.txt' to see details for a specific file\") \n        print(\"  Type 'help' for all commands\")\n        print()\n        \n    except Exception as e:\n        print(f\"Error connecting to server: {e}\")\n        print(\"Make sure the server is running with: python3 server.py\")\n\nif __name__ == \"__main__\":\n    test_server_with_status()"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        self.files = {}  # filename -> {revision: (data, revision)}\n        self.revision_counter = 0",
  "new_string": "        self.files = {}  # filename -> {revision: (data, revision)}\n        self.file_revision_counters = {}  # filename -> next_revision_number"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        # Store the file with thread safety - keep all versions\n        async with self.lock:\n            self.revision_counter += 1\n            if filename not in self.files:\n                self.files[filename] = {}\n            self.files[filename][self.revision_counter] = (data, self.revision_counter)\n            revision = self.revision_counter",
  "new_string": "        # Store the file with thread safety - keep all versions\n        async with self.lock:\n            # Initialize file-specific revision counter if needed\n            if filename not in self.file_revision_counters:\n                self.file_revision_counters[filename] = 1\n            else:\n                self.file_revision_counters[filename] += 1\n            \n            revision = self.file_revision_counters[filename]\n            \n            if filename not in self.files:\n                self.files[filename] = {}\n            self.files[filename][revision] = (data, revision)"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        print(f\"\\nTotal files: {len(self.files)}\")\n        print(f\"Total revisions: {self.revision_counter}\")",
  "new_string": "        print(f\"\\nTotal files: {len(self.files)}\")\n        total_revisions = sum(len(versions) for versions in self.files.values())\n        print(f\"Total revisions across all files: {total_revisions}\")"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_per_file_revisions.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport subprocess\nimport time\n\ndef test_per_file_revisions():\n    \"\"\"Test that each file gets its own revision sequence starting from r1\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    def read_bytes(sock, length):\n        data = b\"\"\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    print(\"=== Testing Per-File Revision Numbers ===\")\n    \n    try:\n        sock = socket.socket()\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9025))\n        \n        read_line(sock)  # READY\n        \n        # Test scenario: Store multiple files and multiple versions\n        # Each file should have its own revision sequence starting from r1\n        \n        files_and_versions = [\n            (\"/kilo.0001/LICENSE\", [\"MIT License v1\", \"MIT License v2\", \"MIT License v3\"]),\n            (\"/kilo.0001/Makefile\", [\"all:\\\\n\\\\tgcc main.c\", \"all:\\\\n\\\\tgcc -O2 main.c\"]),  \n            (\"/kilo.0001/README.md\", [\"# Kilo Editor\", \"# Kilo Text Editor\\\\nA simple editor\"]),\n            (\"/project/main.py\", [\"print('hello')\", \"print('Hello World')\", \"#!/usr/bin/env python3\\\\nprint('Hello World')\"]),\n        ]\n        \n        expected_results = {}  # filename -> list of expected revisions\n        \n        # Store all files and versions in interleaved order\n        # This tests that revisions are per-file, not global\n        max_versions = max(len(versions) for _, versions in files_and_versions)\n        \n        for version_num in range(max_versions):\n            for filename, versions in files_and_versions:\n                if version_num < len(versions):\n                    content = versions[version_num]\n                    expected_revision = version_num + 1  # Should be r1, r2, r3... per file\n                    \n                    print(f\"\\\\nStoring {filename} version {version_num + 1}\")\n                    print(f\"  Content: {repr(content[:30])}{'...' if len(content) > 30 else ''}\")\n                    \n                    sock.send(f\"PUT {filename} {len(content)}\\\\n{content}\".encode('ascii'))\n                    put_response = read_line(sock)\n                    \n                    print(f\"  Response: {repr(put_response.strip())}\")\n                    \n                    if put_response.startswith(\"OK r\"):\n                        actual_revision = int(put_response.strip().split(\"r\")[1])\n                        \n                        if actual_revision == expected_revision:\n                            print(f\"  \u2713 Correct revision r{actual_revision}\")\n                        else:\n                            print(f\"  \u2717 Expected r{expected_revision}, got r{actual_revision}\")\n                    \n                    # Track expected results for later verification\n                    if filename not in expected_results:\n                        expected_results[filename] = []\n                    expected_results[filename].append((expected_revision, content))\n                    \n                    read_line(sock)  # READY\n        \n        # Now test GET for all stored revisions\n        print(f\"\\\\n{'='*60}\")\n        print(\"Testing GET for all stored revisions...\")\n        print('='*60)\n        \n        for filename, expected_revisions in expected_results.items():\n            print(f\"\\\\nTesting {filename}:\")\n            \n            for expected_rev, expected_content in expected_revisions:\n                sock.send(f\"GET {filename} r{expected_rev}\\\\n\".encode('ascii'))\n                get_response = read_line(sock)\n                \n                if get_response.startswith(\"OK \"):\n                    length = int(get_response.split()[1])\n                    data = read_bytes(sock, length)\n                    retrieved_content = data.decode('ascii')\n                    \n                    if retrieved_content == expected_content:\n                        print(f\"  \u2713 r{expected_rev}: Correct content\")\n                    else:\n                        print(f\"  \u2717 r{expected_rev}: Content mismatch\")\n                        print(f\"    Expected: {repr(expected_content)}\")\n                        print(f\"    Retrieved: {repr(retrieved_content)}\")\n                else:\n                    print(f\"  \u2717 r{expected_rev}: {get_response.strip()}\")\n                \n                read_line(sock)  # READY\n        \n        # Test LIST to verify latest revisions\n        print(f\"\\\\n{'='*60}\")\n        print(\"Testing LIST commands...\")\n        print('='*60)\n        \n        test_dirs = [\"/\", \"/kilo.0001\", \"/project\"]\n        \n        for directory in test_dirs:\n            print(f\"\\\\nLIST {directory}:\")\n            sock.send(f\"LIST {directory}\\\\n\".encode('ascii'))\n            \n            list_response = read_line(sock)\n            print(f\"  Response: {repr(list_response.strip())}\")\n            \n            if list_response.startswith(\"OK \"):\n                count = int(list_response.split()[1])\n                for i in range(count):\n                    entry = read_line(sock)\n                    print(f\"    {entry.strip()}\")\n            \n            read_line(sock)  # READY\n        \n        sock.close()\n        \n        print(f\"\\\\n{'='*60}\")\n        print(\"\u2713 Per-file revision test completed!\")\n        print(\"\u2713 Each file should now have revisions starting from r1\")\n        print('='*60)\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    # Start server\n    server_proc = subprocess.Popen(['python3', 'server.py', '9025'])\n    time.sleep(2)\n    \n    try:\n        test_per_file_revisions()\n        \n        print(\"\\\\nServer is still running for manual testing.\")\n        print(\"You can now use the status interface:\")\n        print(\"  Connect to the server console and type 'status' or 'files'\")\n        print(\"  Or run: python3 test_status_interface.py\")\n        \n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "command": "python3 -c \"\nimport socket\n\ndef test_revisions():\n    sock = socket.socket()\n    sock.settimeout(5)\n    sock.connect(('127.0.0.1', 8080))  # Use default port\n    \n    def read_line():\n        line = ''\n        while True:\n            char = sock.recv(1).decode('ascii')\n            if not char or char == '\\\\n':\n                break\n            line += char\n        return line\n    \n    read_line()  # READY\n    \n    # Test: Store different files and see revision numbers\n    files = ['/file1.txt', '/file2.txt', '/file1.txt', '/file3.txt', '/file1.txt']\n    expected_revisions = [1, 1, 2, 1, 3]  # Per-file counting\n    \n    print('Testing per-file revision numbering:')\n    for i, filename in enumerate(files):\n        content = f'Content for {filename} version {expected_revisions[i]}'\n        sock.send(f'PUT {filename} {len(content)}\\\\n{content}'.encode())\n        \n        response = read_line()\n        actual_rev = int(response.split('r')[1]) if response.startswith('OK r') else -1\n        expected_rev = expected_revisions[i]\n        \n        status = '\u2713' if actual_rev == expected_rev else '\u2717'\n        print(f'{status} {filename}: expected r{expected_rev}, got r{actual_rev}')\n        \n        read_line()  # READY\n    \n    sock.close()\n\ntest_revisions()\n\"",
  "description": "Test per-file revision numbers inline"
}

{
  "command": "python3 -c \"\nimport socket\n\ndef test_get_revisions():\n    sock = socket.socket()\n    sock.settimeout(5)\n    sock.connect(('127.0.0.1', 8080))\n    \n    def read_line():\n        line = ''\n        while True:\n            char = sock.recv(1).decode('ascii')\n            if not char or char == '\\\\n':\n                break\n            line += char\n        return line\n    \n    def read_bytes(length):\n        data = b''\n        while len(data) < length:\n            chunk = sock.recv(length - len(data))\n            if not chunk:\n                break\n            data += chunk\n        return data\n    \n    read_line()  # READY\n    \n    # Test GET operations\n    print('Testing GET for specific revisions:')\n    \n    test_cases = [\n        ('/file1.txt', 1, True),   # Should exist\n        ('/file1.txt', 2, True),   # Should exist  \n        ('/file1.txt', 3, True),   # Should exist\n        ('/file1.txt', 4, False),  # Should NOT exist\n        ('/file2.txt', 1, True),   # Should exist\n        ('/file2.txt', 2, False),  # Should NOT exist (file2 only has 1 version)\n    ]\n    \n    for filename, revision, should_exist in test_cases:\n        sock.send(f'GET {filename} r{revision}\\\\n'.encode())\n        response = read_line()\n        \n        exists = response.startswith('OK ')\n        status = '\u2713' if exists == should_exist else '\u2717'\n        \n        if exists:\n            length = int(response.split()[1])\n            data = read_bytes(length)\n            print(f'{status} {filename} r{revision}: EXISTS')\n        else:\n            print(f'{status} {filename} r{revision}: {response.strip()}')\n        \n        read_line()  # READY (or might be part of data)\n    \n    sock.close()\n\ntest_get_revisions()\n\"",
  "description": "Test GET operations with per-file revisions"
}

{
  "command": "sleep 2 && python3 -c \"\nimport socket\n\nsock = socket.socket()\nsock.settimeout(5)\nsock.connect(('127.0.0.1', 9027))\n\ndef read_line():\n    line = ''\n    while True:\n        char = sock.recv(1).decode('ascii')\n        if not char or char == '\\n':\n            break\n        line += char\n    return line\n\nread_line()  # READY\n\n# Quick test to demonstrate the fix\nprint('=== BEFORE (Server-wide revisions) ===')\nprint('PUT /file1.txt -> r1')  \nprint('PUT /file2.txt -> r2') \nprint('PUT /file1.txt -> r3')\nprint('GET /file1.txt r2 -> FAILS (r2 belongs to file2)')\nprint()\nprint('=== AFTER (Per-file revisions) ===') \n\n# Store files with per-file revisions\nsock.send(b'PUT /file1.txt 8\\nVersion1')\nr1 = read_line()\nread_line()  # READY\n\nsock.send(b'PUT /file2.txt 8\\nVersion1') \nr2 = read_line()\nread_line()  # READY\n\nsock.send(b'PUT /file1.txt 8\\nVersion2')\nr3 = read_line()  \nread_line()  # READY\n\nprint(f'PUT /file1.txt -> {r1.strip()}')\nprint(f'PUT /file2.txt -> {r2.strip()}')\nprint(f'PUT /file1.txt -> {r3.strip()}')\n\n# Test GET /file1.txt r2 (should work now)\nsock.send(b'GET /file1.txt r2\\n')\nget_result = read_line()\nprint(f'GET /file1.txt r2 -> {get_result.strip()} \u2713')\n\nsock.close()\n\"",
  "description": "Final demonstration of the revision fix"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "        # Store the file with thread safety - keep all versions\n        async with self.lock:\n            # Initialize file-specific revision counter if needed\n            if filename not in self.file_revision_counters:\n                self.file_revision_counters[filename] = 1\n            else:\n                self.file_revision_counters[filename] += 1\n            \n            revision = self.file_revision_counters[filename]\n            \n            if filename not in self.files:\n                self.files[filename] = {}\n            self.files[filename][revision] = (data, revision)",
  "new_string": "        # Store the file with thread safety - keep all versions\n        async with self.lock:\n            # Check if file already exists and if content is the same\n            if filename in self.files and self.files[filename]:\n                # Get the latest revision's data\n                latest_revision_num = max(self.files[filename].keys())\n                latest_data, _ = self.files[filename][latest_revision_num]\n                \n                # If content is identical, return existing revision\n                if data == latest_data:\n                    revision = latest_revision_num\n                else:\n                    # Content is different, create new revision\n                    self.file_revision_counters[filename] += 1\n                    revision = self.file_revision_counters[filename]\n                    self.files[filename][revision] = (data, revision)\n            else:\n                # File doesn't exist, create first revision\n                if filename not in self.file_revision_counters:\n                    self.file_revision_counters[filename] = 1\n                else:\n                    self.file_revision_counters[filename] += 1\n                \n                revision = self.file_revision_counters[filename]\n                \n                if filename not in self.files:\n                    self.files[filename] = {}\n                self.files[filename][revision] = (data, revision)"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/test_duplicate_content.py",
  "content": "#!/usr/bin/env python3\n\nimport socket\nimport subprocess\nimport time\n\ndef test_duplicate_content_handling():\n    \"\"\"Test that identical content doesn't create new revisions\"\"\"\n    \n    def read_line(sock):\n        line = \"\"\n        while True:\n            char = sock.recv(1).decode('ascii', errors='replace')\n            if not char:\n                break\n            line += char\n            if char == '\\n':\n                break\n        return line\n    \n    print(\"=== Testing Duplicate Content Handling ===\")\n    \n    try:\n        sock = socket.socket()\n        sock.settimeout(10)\n        sock.connect(('127.0.0.1', 9030))\n        \n        read_line(sock)  # READY\n        \n        filename = \"/kilo.0001/LICENSE\"\n        content1 = \"MIT License\\\\nCopyright (c) 2023\"\n        content2 = \"GPL License\\\\nCopyright (c) 2023\" \n        \n        print(\"Test Case 1: First PUT - should create r1\")\n        sock.send(f\"PUT {filename} {len(content1)}\\\\n{content1}\".encode('ascii'))\n        response1 = read_line(sock)\n        print(f\"  Response: {response1.strip()}\")\n        read_line(sock)  # READY\n        \n        print(\"\\\\nTest Case 2: Same content - should return r1 (no new revision)\")\n        sock.send(f\"PUT {filename} {len(content1)}\\\\n{content1}\".encode('ascii'))\n        response2 = read_line(sock)\n        print(f\"  Response: {response2.strip()}\")\n        \n        if response1.strip() == response2.strip():\n            print(\"  \u2713 Identical content returned same revision (no increment)\")\n        else:\n            print(\"  \u2717 Identical content created new revision (BUG)\")\n        \n        read_line(sock)  # READY\n        \n        print(\"\\\\nTest Case 3: Different content - should create r2\")\n        sock.send(f\"PUT {filename} {len(content2)}\\\\n{content2}\".encode('ascii'))\n        response3 = read_line(sock)\n        print(f\"  Response: {response3.strip()}\")\n        \n        expected_r2 = \"OK r2\"\n        if response3.strip() == expected_r2:\n            print(\"  \u2713 Different content created new revision r2\")\n        else:\n            print(f\"  \u2717 Expected {expected_r2}, got {response3.strip()}\")\n        \n        read_line(sock)  # READY\n        \n        print(\"\\\\nTest Case 4: Same as r2 - should return r2 (no new revision)\")\n        sock.send(f\"PUT {filename} {len(content2)}\\\\n{content2}\".encode('ascii'))\n        response4 = read_line(sock)\n        print(f\"  Response: {response4.strip()}\")\n        \n        if response3.strip() == response4.strip():\n            print(\"  \u2713 Identical content returned same revision r2\")\n        else:\n            print(\"  \u2717 Identical content created new revision (BUG)\")\n        \n        read_line(sock)  # READY\n        \n        print(\"\\\\nTest Case 5: Back to original content - should return r1\")\n        sock.send(f\"PUT {filename} {len(content1)}\\\\n{content1}\".encode('ascii'))\n        response5 = read_line(sock)\n        print(f\"  Response: {response5.strip()}\")\n        \n        if response1.strip() == response5.strip():\n            print(\"  \u2713 Content matching r1 returned r1 (no new revision)\")\n        else:\n            print(f\"  \u2717 Expected {response1.strip()}, got {response5.strip()}\")\n        \n        read_line(sock)  # READY\n        \n        # Test with multiple files\n        print(\"\\\\n\" + \"=\"*50)\n        print(\"Testing with multiple files...\")\n        \n        file2 = \"/test.txt\"\n        content_a = \"Hello World\"\n        \n        print(f\"\\\\nPUT {file2} (first time)\")\n        sock.send(f\"PUT {file2} {len(content_a)}\\\\n{content_a}\".encode('ascii'))\n        resp_a1 = read_line(sock)\n        print(f\"  Response: {resp_a1.strip()}\")\n        read_line(sock)  # READY\n        \n        print(f\"PUT {file2} (same content)\")\n        sock.send(f\"PUT {file2} {len(content_a)}\\\\n{content_a}\".encode('ascii'))\n        resp_a2 = read_line(sock)\n        print(f\"  Response: {resp_a2.strip()}\")\n        \n        if resp_a1.strip() == resp_a2.strip():\n            print(\"  \u2713 Multiple files: identical content returns same revision\")\n        else:\n            print(\"  \u2717 Multiple files: identical content created new revision\")\n        \n        sock.close()\n        \n        print(\"\\\\n\" + \"=\"*50)\n        print(\"\u2713 Duplicate content test completed!\")\n        print(\"\u2713 Server should now avoid creating new revisions for identical content\")\n        print(\"=\"*50)\n        \n    except Exception as e:\n        print(f\"Error: {e}\")\n\nif __name__ == \"__main__\":\n    # Start server\n    server_proc = subprocess.Popen(['python3', 'server.py', '9030'])\n    time.sleep(2)\n    \n    try:\n        test_duplicate_content_handling()\n    finally:\n        server_proc.terminate()\n        server_proc.wait()"
}

{
  "command": "sleep 3 && python3 -c \"\nimport socket\n\ndef test_duplicate():\n    sock = socket.socket()\n    sock.settimeout(5)\n    sock.connect(('127.0.0.1', 9031))\n    \n    def read_line():\n        line = ''\n        while True:\n            char = sock.recv(1).decode('ascii')\n            if not char or char == '\\n':\n                break\n            line += char\n        return line\n    \n    read_line()  # READY\n    \n    filename = '/test.txt'\n    content = 'Hello World'\n    \n    print('=== Testing Duplicate Content ===')\n    \n    # First PUT\n    sock.send(f'PUT {filename} {len(content)}\\n{content}'.encode())\n    resp1 = read_line()\n    print(f'First PUT: {resp1.strip()}')\n    read_line()  # READY\n    \n    # Second PUT with identical content\n    sock.send(f'PUT {filename} {len(content)}\\n{content}'.encode())\n    resp2 = read_line()\n    print(f'Identical PUT: {resp2.strip()}')\n    read_line()  # READY\n    \n    # Check results\n    if resp1.strip() == resp2.strip():\n        print('\u2713 SUCCESS: Identical content returned same revision')\n    else:\n        print('\u2717 FAIL: Identical content created new revision')\n    \n    # Test different content\n    content2 = 'Hello World v2'\n    sock.send(f'PUT {filename} {len(content2)}\\n{content2}'.encode())\n    resp3 = read_line()\n    print(f'Different PUT: {resp3.strip()}')\n    read_line()  # READY\n    \n    # Test identical to first again\n    sock.send(f'PUT {filename} {len(content)}\\n{content}'.encode())\n    resp4 = read_line()\n    print(f'Back to original: {resp4.strip()}')\n    \n    if resp1.strip() == resp4.strip():\n        print('\u2713 SUCCESS: Original content returned original revision')\n    else:\n        print('\u2717 FAIL: Original content created new revision')\n    \n    sock.close()\n\ntest_duplicate()\n\"",
  "description": "Test duplicate content inline"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/server.py",
  "old_string": "            else:\n                # File doesn't exist, create first revision\n                if filename not in self.file_revision_counters:\n                    self.file_revision_counters[filename] = 1\n                else:\n                    self.file_revision_counters[filename] += 1\n                \n                revision = self.file_revision_counters[filename]\n                \n                if filename not in self.files:\n                    self.files[filename] = {}\n                self.files[filename][revision] = (data, revision)",
  "new_string": "            else:\n                # File doesn't exist, create first revision\n                self.file_revision_counters[filename] = 1\n                revision = 1\n                \n                if filename not in self.files:\n                    self.files[filename] = {}\n                self.files[filename][revision] = (data, revision)"
}

{
  "file_path": "/home/smite/dev/protohackers/10-voracious-code-storage/validate_duplicate_logic.py",
  "content": "#!/usr/bin/env python3\n\nclass MockVCSServer:\n    \"\"\"Mock server to test the duplicate content logic\"\"\"\n    \n    def __init__(self):\n        self.files = {}\n        self.file_revision_counters = {}\n    \n    def put_file(self, filename, data):\n        \"\"\"Simulate the PUT logic for duplicate content handling\"\"\"\n        \n        # Check if file already exists and if content is the same\n        if filename in self.files and self.files[filename]:\n            # Get the latest revision's data\n            latest_revision_num = max(self.files[filename].keys())\n            latest_data, _ = self.files[filename][latest_revision_num]\n            \n            # If content is identical, return existing revision\n            if data == latest_data:\n                revision = latest_revision_num\n            else:\n                # Content is different, create new revision\n                self.file_revision_counters[filename] += 1\n                revision = self.file_revision_counters[filename]\n                self.files[filename][revision] = (data, revision)\n        else:\n            # File doesn't exist, create first revision\n            self.file_revision_counters[filename] = 1\n            revision = 1\n            \n            if filename not in self.files:\n                self.files[filename] = {}\n            self.files[filename][revision] = (data, revision)\n        \n        return f\"OK r{revision}\"\n\ndef test_duplicate_logic():\n    \"\"\"Test the duplicate content logic without a running server\"\"\"\n    \n    print(\"=== Testing Duplicate Content Logic ===\")\n    \n    server = MockVCSServer()\n    \n    filename = \"/kilo.0001/LICENSE\"\n    content1 = b\"MIT License\\\\nCopyright (c) 2023\"\n    content2 = b\"GPL License\\\\nCopyright (c) 2023\"\n    \n    # Test 1: First PUT should create r1\n    result1 = server.put_file(filename, content1)\n    print(f\"Test 1 - First PUT: {result1}\")\n    expected = \"OK r1\"\n    status = \"\u2713\" if result1 == expected else \"\u2717\"\n    print(f\"  {status} Expected: {expected}, Got: {result1}\")\n    \n    # Test 2: Same content should return r1\n    result2 = server.put_file(filename, content1)\n    print(f\"\\\\nTest 2 - Duplicate content: {result2}\")\n    expected = \"OK r1\"\n    status = \"\u2713\" if result2 == expected else \"\u2717\"\n    print(f\"  {status} Expected: {expected}, Got: {result2}\")\n    \n    # Test 3: Different content should create r2\n    result3 = server.put_file(filename, content2)\n    print(f\"\\\\nTest 3 - Different content: {result3}\")\n    expected = \"OK r2\"\n    status = \"\u2713\" if result3 == expected else \"\u2717\"\n    print(f\"  {status} Expected: {expected}, Got: {result3}\")\n    \n    # Test 4: Same as r2 should return r2\n    result4 = server.put_file(filename, content2)\n    print(f\"\\\\nTest 4 - Duplicate r2 content: {result4}\")\n    expected = \"OK r2\"\n    status = \"\u2713\" if result4 == expected else \"\u2717\"\n    print(f\"  {status} Expected: {expected}, Got: {result4}\")\n    \n    # Test 5: Back to r1 content should return r1\n    result5 = server.put_file(filename, content1)\n    print(f\"\\\\nTest 5 - Back to r1 content: {result5}\")\n    expected = \"OK r1\"\n    status = \"\u2713\" if result5 == expected else \"\u2717\"\n    print(f\"  {status} Expected: {expected}, Got: {result5}\")\n    \n    # Test 6: Different file should start at r1\n    filename2 = \"/test.txt\"\n    result6 = server.put_file(filename2, b\"Hello World\")\n    print(f\"\\\\nTest 6 - New file: {result6}\")\n    expected = \"OK r1\"\n    status = \"\u2713\" if result6 == expected else \"\u2717\"\n    print(f\"  {status} Expected: {expected}, Got: {result6}\")\n    \n    # Show final state\n    print(f\"\\\\n=== Final State ===\")\n    print(f\"Files: {list(server.files.keys())}\")\n    for fname, versions in server.files.items():\n        print(f\"  {fname}: revisions {sorted(versions.keys())}\")\n    print(f\"Revision counters: {server.file_revision_counters}\")\n    \n    print(f\"\\\\n=== Summary ===\")\n    all_passed = all([\n        result1 == \"OK r1\",\n        result2 == \"OK r1\", \n        result3 == \"OK r2\",\n        result4 == \"OK r2\",\n        result5 == \"OK r1\",\n        result6 == \"OK r1\"\n    ])\n    \n    if all_passed:\n        print(\"\u2705 ALL TESTS PASSED - Duplicate content logic is correct!\")\n    else:\n        print(\"\u274c SOME TESTS FAILED - Logic needs fixing\")\n\nif __name__ == \"__main__\":\n    test_duplicate_logic()"
}