a3ef00a687
- Port core EXI encoding/decoding functionality to C# - Implement V2G protocol parsing and analysis - Add simplified decoder/encoder for roundtrip testing - Create comprehensive error handling with EXI exceptions - Support both byte array and file stream operations - Include packet structure analysis for V2GTP data - Successfully builds and runs basic functionality tests 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
333 lines
13 KiB
C#
333 lines
13 KiB
C#
/*
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* Copyright (C) 2024 C# Port
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*
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* V2GDecoderNet - C# port of OpenV2G EXI codec
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*/
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using V2GDecoderNet.EXI;
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using V2GDecoderNet.V2G;
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namespace V2GDecoderNet
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{
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class Program
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{
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static void Main(string[] args)
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{
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Console.WriteLine("=== V2GDecoderNet - C# EXI Codec ===");
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Console.WriteLine("OpenV2G C# Port v1.0.0");
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Console.WriteLine();
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if (args.Length < 1)
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{
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ShowUsage();
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return;
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}
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try
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{
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string command = args[0].ToLower();
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switch (command)
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{
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case "decode":
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if (args.Length < 2)
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{
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Console.WriteLine("Error: Input file required for decode command");
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ShowUsage();
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return;
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}
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DecodeFile(args[1], args.Length > 2 ? args[2] : null);
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break;
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case "encode":
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if (args.Length < 2)
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{
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Console.WriteLine("Error: Input file required for encode command");
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ShowUsage();
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return;
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}
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EncodeFile(args[1], args.Length > 2 ? args[2] : null);
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break;
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case "test":
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RunRoundtripTest(args.Length > 1 ? args[1] : "../../test1.exi");
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break;
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case "analyze":
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if (args.Length < 2)
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{
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Console.WriteLine("Error: Input file required for analyze command");
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ShowUsage();
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return;
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}
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AnalyzeFile(args[1]);
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break;
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default:
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Console.WriteLine($"Error: Unknown command '{command}'");
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ShowUsage();
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break;
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}
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}
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catch (Exception ex)
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{
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Console.WriteLine($"Error: {ex.Message}");
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if (ex is EXIException exiEx)
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{
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Console.WriteLine($"EXI Error Code: {exiEx.ErrorCode}");
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}
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#if DEBUG
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Console.WriteLine($"Stack Trace: {ex.StackTrace}");
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#endif
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}
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}
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static void ShowUsage()
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{
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Console.WriteLine("Usage:");
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Console.WriteLine(" V2GDecoderNet decode <input.exi> [output.xml] - Decode EXI to XML");
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Console.WriteLine(" V2GDecoderNet encode <input.xml> [output.exi] - Encode XML to EXI");
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Console.WriteLine(" V2GDecoderNet test [input.exi] - Run roundtrip test");
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Console.WriteLine(" V2GDecoderNet analyze <input.exi> - Analyze EXI structure");
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Console.WriteLine();
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Console.WriteLine("Examples:");
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Console.WriteLine(" V2GDecoderNet decode test1.exi test1.xml");
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Console.WriteLine(" V2GDecoderNet encode test1.xml test1_new.exi");
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Console.WriteLine(" V2GDecoderNet test test1.exi");
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}
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static void DecodeFile(string inputFile, string? outputFile = null)
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{
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Console.WriteLine($"Decoding: {inputFile}");
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if (!File.Exists(inputFile))
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{
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throw new FileNotFoundException($"Input file not found: {inputFile}");
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}
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// Read EXI data
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var result = ByteStream.ReadBytesFromFile(inputFile, out byte[] exiData, out int bytesRead);
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if (result != 0)
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{
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throw new EXIException(result, $"Failed to read input file: {inputFile}");
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}
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Console.WriteLine($"Read {bytesRead} bytes from {inputFile}");
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// Extract EXI body from V2GTP data if present
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byte[] exiBody = V2GProtocol.ExtractEXIBody(exiData);
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if (exiBody.Length != exiData.Length)
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{
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Console.WriteLine($"Extracted EXI body: {exiBody.Length} bytes (V2GTP header removed)");
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}
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// Analyze packet structure
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var analysis = V2GProtocol.AnalyzeDataStructure(exiData);
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Console.WriteLine($"Packet structure: {analysis}");
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// Decode EXI to XML - use simplified decoder for now
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var simpleDecoder = new SimpleV2GDecoder();
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string xmlOutput = simpleDecoder.DecodeToSimpleXml(exiBody);
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// Determine output file name
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outputFile ??= Path.ChangeExtension(inputFile, ".xml");
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// Write XML output
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File.WriteAllText(outputFile, xmlOutput);
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Console.WriteLine($"XML written to: {outputFile}");
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Console.WriteLine($"XML size: {xmlOutput.Length} characters");
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}
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static void EncodeFile(string inputFile, string? outputFile = null)
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{
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Console.WriteLine($"Encoding: {inputFile}");
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if (!File.Exists(inputFile))
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{
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throw new FileNotFoundException($"Input file not found: {inputFile}");
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}
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// Read XML data
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string xmlContent = File.ReadAllText(inputFile);
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Console.WriteLine($"Read {xmlContent.Length} characters from {inputFile}");
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// Encode XML to EXI - use simplified encoder for now
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var simpleEncoder = new SimpleV2GEncoder();
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byte[] exiData = simpleEncoder.EncodeToSimpleEXI(xmlContent);
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// Determine output file name
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outputFile ??= Path.ChangeExtension(inputFile, ".exi");
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// Write EXI output
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int writeResult = ByteStream.WriteBytesToFile(exiData, outputFile);
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if (writeResult != 0)
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{
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throw new EXIException(writeResult, $"Failed to write output file: {outputFile}");
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}
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Console.WriteLine($"EXI written to: {outputFile}");
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Console.WriteLine($"EXI size: {exiData.Length} bytes");
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}
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static void AnalyzeFile(string inputFile)
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{
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Console.WriteLine($"Analyzing: {inputFile}");
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if (!File.Exists(inputFile))
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{
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throw new FileNotFoundException($"Input file not found: {inputFile}");
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}
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// Read file data
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var result = ByteStream.ReadBytesFromFile(inputFile, out byte[] data, out int bytesRead);
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if (result != 0)
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{
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throw new EXIException(result, $"Failed to read input file: {inputFile}");
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}
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Console.WriteLine($"File size: {bytesRead} bytes");
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// Analyze packet structure
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var analysis = V2GProtocol.AnalyzeDataStructure(data);
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Console.WriteLine();
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Console.WriteLine("=== Data Structure Analysis ===");
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Console.WriteLine(analysis);
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Console.WriteLine();
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// Show hex dump of first 64 bytes
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int dumpSize = Math.Min(64, data.Length);
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Console.WriteLine($"Hex dump (first {dumpSize} bytes):");
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string hexDump = ByteStream.ByteArrayToHexString(data.Take(dumpSize).ToArray());
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for (int i = 0; i < hexDump.Length; i += 32)
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{
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int length = Math.Min(32, hexDump.Length - i);
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string line = hexDump.Substring(i, length);
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// Format as pairs
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var pairs = new List<string>();
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for (int j = 0; j < line.Length; j += 2)
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{
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pairs.Add(line.Substring(j, Math.Min(2, line.Length - j)));
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}
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Console.WriteLine($"{i/2:X4}: {string.Join(" ", pairs)}");
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}
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// If it has EXI content, try to decode header
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byte[] exiBody = V2GProtocol.ExtractEXIBody(data);
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if (exiBody.Length > 0)
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{
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Console.WriteLine();
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Console.WriteLine("=== EXI Header Analysis ===");
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try
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{
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var decoder = new EXIDecoder();
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var inputStream = new BitInputStream(exiBody);
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var header = decoder.DecodeHeader(inputStream);
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Console.WriteLine($"Has Cookie: {header.HasCookie}");
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Console.WriteLine($"Format Version: {header.FormatVersion}");
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Console.WriteLine($"Preserve Comments: {header.PreserveComments}");
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Console.WriteLine($"Preserve PIs: {header.PreservePIs}");
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Console.WriteLine($"Preserve DTD: {header.PreserveDTD}");
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Console.WriteLine($"Preserve Prefixes: {header.PreservePrefixes}");
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}
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catch (Exception ex)
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{
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Console.WriteLine($"Header analysis failed: {ex.Message}");
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}
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}
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}
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static void RunRoundtripTest(string inputFile)
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{
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Console.WriteLine($"Running roundtrip test on: {inputFile}");
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if (!File.Exists(inputFile))
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{
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throw new FileNotFoundException($"Input file not found: {inputFile}");
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}
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// Step 1: Read original EXI file
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var result = ByteStream.ReadBytesFromFile(inputFile, out byte[] originalExi, out int originalSize);
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if (result != 0)
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{
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throw new EXIException(result, $"Failed to read input file: {inputFile}");
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}
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Console.WriteLine($"Original EXI size: {originalSize} bytes");
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// Step 2: Decode EXI to XML - use simplified decoder for now
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byte[] exiBody = V2GProtocol.ExtractEXIBody(originalExi);
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var simpleDecoder = new SimpleV2GDecoder();
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string xmlContent = simpleDecoder.DecodeToSimpleXml(exiBody);
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string xmlFile = Path.ChangeExtension(inputFile, ".xml");
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File.WriteAllText(xmlFile, xmlContent);
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Console.WriteLine($"Decoded to XML: {xmlFile} ({xmlContent.Length} characters)");
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// Step 3: Encode XML back to EXI - use simplified encoder for now
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var simpleEncoder = new SimpleV2GEncoder();
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byte[] newExi = simpleEncoder.EncodeToSimpleEXI(xmlContent);
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string newExiFile = Path.ChangeExtension(inputFile, "_new.exi");
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int writeResult = ByteStream.WriteBytesToFile(newExi, newExiFile);
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if (writeResult != 0)
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{
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throw new EXIException(writeResult, $"Failed to write output file: {newExiFile}");
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}
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Console.WriteLine($"Encoded to EXI: {newExiFile} ({newExi.Length} bytes)");
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// Step 4: Compare original vs new EXI
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bool identical = exiBody.SequenceEqual(newExi);
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Console.WriteLine();
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Console.WriteLine("=== Roundtrip Test Results ===");
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Console.WriteLine($"Original EXI body: {exiBody.Length} bytes");
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Console.WriteLine($"New EXI: {newExi.Length} bytes");
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Console.WriteLine($"Files identical: {(identical ? "YES ✓" : "NO ✗")}");
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if (!identical)
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{
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Console.WriteLine();
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Console.WriteLine("Differences found:");
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int maxCompare = Math.Min(exiBody.Length, newExi.Length);
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int differences = 0;
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for (int i = 0; i < maxCompare; i++)
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{
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if (exiBody[i] != newExi[i])
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{
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differences++;
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if (differences <= 10) // Show first 10 differences
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{
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Console.WriteLine($" Offset {i:X4}: {exiBody[i]:X2} -> {newExi[i]:X2}");
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}
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}
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}
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if (differences > 10)
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{
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Console.WriteLine($" ... and {differences - 10} more differences");
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}
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if (exiBody.Length != newExi.Length)
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{
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Console.WriteLine($" Size difference: {newExi.Length - exiBody.Length} bytes");
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}
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}
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Console.WriteLine();
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Console.WriteLine(identical ? "✓ Roundtrip test PASSED" : "✗ Roundtrip test FAILED");
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}
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}
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} |