Files
V2GDecoderC/Port/vc2022/src/codec/BitInputStream.c
chiDT d5263abab0 feat: Perfect C# structure alignment with VC2022 for exact debugging
Major architectural refactoring to achieve 1:1 structural compatibility:

🏗️ **VC2022 Structure Replication**
- Iso1EXIDocument: 1:1 replica of VC2022 iso1EXIDocument struct
- DinEXIDocument: 1:1 replica of VC2022 dinEXIDocument struct
- Iso2EXIDocument: 1:1 replica of VC2022 iso2EXIDocument struct
- All _isUsed flags and Initialize() methods exactly matching VC2022

🔄 **VC2022 Function Porting**
- ParseXmlToIso1(): Exact port of VC2022 parse_xml_to_iso1()
- EncodeIso1ExiDocument(): Exact port of VC2022 encode_iso1ExiDocument()
- Choice 76 (V2G_Message) encoding with identical logic
- BulkChargingComplete ignore behavior preserved

 **Call Sequence Alignment**
- Old: EncodeV2GMessage() → direct EXI encoding
- New: EncodeV2GMessage() → Iso1EXIDocument → EncodeIso1ExiDocument()
- Exact VC2022 call chain: init → parse → encode → finish

🔍 **1:1 Debug Comparison Ready**
- C# exiDoc.V2G_Message_isUsed ↔ VC2022 exiDoc->V2G_Message_isUsed
- Identical structure enables line-by-line debugging comparison
- Ready for precise 1-byte difference investigation (41 vs 42 bytes)

📁 **Project Reorganization**
- Moved from csharp/ to Port/ for cleaner structure
- Port/dotnet/ and Port/vc2022/ for parallel development
- Complete build system and documentation updates

🎯 **Achievement**: 97.6% binary compatibility (41/42 bytes)
Next: 1:1 debug session to identify exact byte difference location

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-09-10 22:01:08 +09:00

106 lines
2.9 KiB
C

/*
* Copyright (C) 2007-2018 Siemens AG
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*******************************************************************
*
* @author Daniel.Peintner.EXT@siemens.com
* @version 2017-03-02
* @contact Richard.Kuntschke@siemens.com
*
* <p>Code generated by EXIdizer</p>
* <p>Schema: V2G_CI_MsgDef.xsd</p>
*
*
********************************************************************/
#include "BitInputStream.h"
#include "EXIConfig.h"
#include "EXITypes.h"
#include "ErrorCodes.h"
#ifndef BIT_INPUT_STREAM_C
#define BIT_INPUT_STREAM_C
/* internal method to (re)fill buffer */
static int readBuffer(bitstream_t* stream)
{
int errn = 0;
if(stream->capacity==0)
{
#if EXI_STREAM == BYTE_ARRAY
if ( (*stream->pos) < stream->size ) {
stream->buffer = stream->data[(*stream->pos)++];
stream->capacity = BITS_IN_BYTE;
} else {
errn = EXI_ERROR_INPUT_STREAM_EOF;
}
#endif
#if EXI_STREAM == FILE_STREAM
stream->buffer = (uint8_t)(getc(stream->file));
/* EOF cannot be used, 0xFF valid value */
if ( feof(stream->file) || ferror(stream->file) ) {
errn = EXI_ERROR_INPUT_STREAM_EOF;
} else {
stream->capacity = BITS_IN_BYTE;
}
#endif
}
return errn;
}
int readBits(bitstream_t* stream, size_t num_bits, uint32_t* b)
{
int errn = readBuffer(stream);
if (errn == 0) {
/* read the bits in one step */
if(num_bits <= stream->capacity) {
stream->capacity = (uint8_t)(stream->capacity - num_bits);
*b = (uint32_t)((stream->buffer >> stream->capacity) & (0xff >> (BITS_IN_BYTE - num_bits)));
} else {
/* read bits as much as possible */
*b = (uint32_t)(stream->buffer & (0xff >> (BITS_IN_BYTE - stream->capacity)));
num_bits = (num_bits - stream->capacity);
stream->capacity = 0;
/* read whole bytes */
while(errn == 0 && num_bits >= 8)
{
errn = readBuffer(stream);
*b = ((*b) << BITS_IN_BYTE) | stream->buffer;
num_bits = (num_bits - BITS_IN_BYTE);
stream->capacity = 0;
}
/* read the spare bits in the buffer */
if(errn == 0 && num_bits > 0)
{
errn = readBuffer(stream);
if (errn == 0) {
*b = ( (*b) << num_bits) | (uint8_t)(stream->buffer >> (BITS_IN_BYTE - num_bits)) ;
stream->capacity = (uint8_t)(BITS_IN_BYTE - num_bits);
}
}
}
}
return errn;
}
#endif