1 |
/*************************************************************************** |
/*************************************************************************** |
2 |
* * |
* * |
3 |
* libgig - C++ cross-platform Gigasampler format file loader library * |
* libgig - C++ cross-platform Gigasampler format file access library * |
4 |
* * |
* * |
5 |
* Copyright (C) 2003-2005 by Christian Schoenebeck * |
* Copyright (C) 2003-2007 by Christian Schoenebeck * |
6 |
* <cuse@users.sourceforge.net> * |
* <cuse@users.sourceforge.net> * |
7 |
* * |
* * |
8 |
* This library is free software; you can redistribute it and/or modify * |
* This library is free software; you can redistribute it and/or modify * |
70 |
} |
} |
71 |
|
|
72 |
Chunk::~Chunk() { |
Chunk::~Chunk() { |
73 |
|
if (CurrentChunkSize != NewChunkSize) pFile->UnlogResized(this); |
74 |
if (pChunkData) delete[] pChunkData; |
if (pChunkData) delete[] pChunkData; |
75 |
} |
} |
76 |
|
|
82 |
if (lseek(pFile->hFileRead, fPos, SEEK_SET) != -1) { |
if (lseek(pFile->hFileRead, fPos, SEEK_SET) != -1) { |
83 |
read(pFile->hFileRead, &ChunkID, 4); |
read(pFile->hFileRead, &ChunkID, 4); |
84 |
read(pFile->hFileRead, &CurrentChunkSize, 4); |
read(pFile->hFileRead, &CurrentChunkSize, 4); |
85 |
|
#elif defined(WIN32) |
86 |
|
if (SetFilePointer(pFile->hFileRead, fPos, NULL/*32 bit*/, FILE_BEGIN) != INVALID_SET_FILE_POINTER) { |
87 |
|
DWORD dwBytesRead; |
88 |
|
ReadFile(pFile->hFileRead, &ChunkID, 4, &dwBytesRead, NULL); |
89 |
|
ReadFile(pFile->hFileRead, &CurrentChunkSize, 4, &dwBytesRead, NULL); |
90 |
#else |
#else |
91 |
if (!fseek(pFile->hFileRead, fPos, SEEK_SET)) { |
if (!fseek(pFile->hFileRead, fPos, SEEK_SET)) { |
92 |
fread(&ChunkID, 4, 1, pFile->hFileRead); |
fread(&ChunkID, 4, 1, pFile->hFileRead); |
94 |
#endif // POSIX |
#endif // POSIX |
95 |
#if WORDS_BIGENDIAN |
#if WORDS_BIGENDIAN |
96 |
if (ChunkID == CHUNK_ID_RIFF) { |
if (ChunkID == CHUNK_ID_RIFF) { |
97 |
bEndianNative = false; |
pFile->bEndianNative = false; |
98 |
} |
} |
99 |
#else // little endian |
#else // little endian |
100 |
if (ChunkID == CHUNK_ID_RIFX) { |
if (ChunkID == CHUNK_ID_RIFX) { |
135 |
write(pFile->hFileWrite, &uiNewChunkID, 4); |
write(pFile->hFileWrite, &uiNewChunkID, 4); |
136 |
write(pFile->hFileWrite, &uiNewChunkSize, 4); |
write(pFile->hFileWrite, &uiNewChunkSize, 4); |
137 |
} |
} |
138 |
|
#elif defined(WIN32) |
139 |
|
if (SetFilePointer(pFile->hFileWrite, fPos, NULL/*32 bit*/, FILE_BEGIN) != INVALID_SET_FILE_POINTER) { |
140 |
|
DWORD dwBytesWritten; |
141 |
|
WriteFile(pFile->hFileWrite, &uiNewChunkID, 4, &dwBytesWritten, NULL); |
142 |
|
WriteFile(pFile->hFileWrite, &uiNewChunkSize, 4, &dwBytesWritten, NULL); |
143 |
|
} |
144 |
#else |
#else |
145 |
if (!fseek(pFile->hFileWrite, fPos, SEEK_SET)) { |
if (!fseek(pFile->hFileWrite, fPos, SEEK_SET)) { |
146 |
fwrite(&uiNewChunkID, 4, 1, pFile->hFileWrite); |
fwrite(&uiNewChunkID, 4, 1, pFile->hFileWrite); |
224 |
std::cout << "Chunk::GetState()" << std::endl; |
std::cout << "Chunk::GetState()" << std::endl; |
225 |
#endif // DEBUG |
#endif // DEBUG |
226 |
#if POSIX |
#if POSIX |
227 |
if (pFile->hFileRead == 0) return stream_closed; |
if (pFile->hFileRead == 0) return stream_closed; |
228 |
|
#elif defined (WIN32) |
229 |
|
if (pFile->hFileRead == INVALID_HANDLE_VALUE) |
230 |
|
return stream_closed; |
231 |
#else |
#else |
232 |
if (pFile->hFileRead == NULL) return stream_closed; |
if (pFile->hFileRead == NULL) return stream_closed; |
233 |
#endif // POSIX |
#endif // POSIX |
261 |
unsigned long readWords = read(pFile->hFileRead, pData, WordCount * WordSize); |
unsigned long readWords = read(pFile->hFileRead, pData, WordCount * WordSize); |
262 |
if (readWords < 1) return 0; |
if (readWords < 1) return 0; |
263 |
readWords /= WordSize; |
readWords /= WordSize; |
264 |
|
#elif defined(WIN32) |
265 |
|
if (SetFilePointer(pFile->hFileRead, ulStartPos + ulPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) return 0; |
266 |
|
DWORD readWords; |
267 |
|
ReadFile(pFile->hFileRead, pData, WordCount * WordSize, &readWords, NULL); |
268 |
|
if (readWords < 1) return 0; |
269 |
|
readWords /= WordSize; |
270 |
#else // standard C functions |
#else // standard C functions |
271 |
if (fseek(pFile->hFileRead, ulStartPos + ulPos, SEEK_SET)) return 0; |
if (fseek(pFile->hFileRead, ulStartPos + ulPos, SEEK_SET)) return 0; |
272 |
unsigned long readWords = fread(pData, WordSize, WordCount, pFile->hFileRead); |
unsigned long readWords = fread(pData, WordSize, WordCount, pFile->hFileRead); |
336 |
unsigned long writtenWords = write(pFile->hFileWrite, pData, WordCount * WordSize); |
unsigned long writtenWords = write(pFile->hFileWrite, pData, WordCount * WordSize); |
337 |
if (writtenWords < 1) throw Exception("POSIX IO Error while trying to write chunk data"); |
if (writtenWords < 1) throw Exception("POSIX IO Error while trying to write chunk data"); |
338 |
writtenWords /= WordSize; |
writtenWords /= WordSize; |
339 |
|
#elif defined(WIN32) |
340 |
|
if (SetFilePointer(pFile->hFileWrite, ulStartPos + ulPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) { |
341 |
|
throw Exception("Could not seek to position " + ToString(ulPos) + |
342 |
|
" in chunk (" + ToString(ulStartPos + ulPos) + " in file)"); |
343 |
|
} |
344 |
|
DWORD writtenWords; |
345 |
|
WriteFile(pFile->hFileWrite, pData, WordCount * WordSize, &writtenWords, NULL); |
346 |
|
if (writtenWords < 1) throw Exception("Windows IO Error while trying to write chunk data"); |
347 |
|
writtenWords /= WordSize; |
348 |
#else // standard C functions |
#else // standard C functions |
349 |
if (fseek(pFile->hFileWrite, ulStartPos + ulPos, SEEK_SET)) { |
if (fseek(pFile->hFileWrite, ulStartPos + ulPos, SEEK_SET)) { |
350 |
throw Exception("Could not seek to position " + ToString(ulPos) + |
throw Exception("Could not seek to position " + ToString(ulPos) + |
706 |
* @see ReleaseChunkData() |
* @see ReleaseChunkData() |
707 |
*/ |
*/ |
708 |
void* Chunk::LoadChunkData() { |
void* Chunk::LoadChunkData() { |
709 |
if (!pChunkData) { |
if (!pChunkData && pFile->Filename != "") { |
710 |
#if POSIX |
#if POSIX |
711 |
if (lseek(pFile->hFileRead, ulStartPos, SEEK_SET) == -1) return NULL; |
if (lseek(pFile->hFileRead, ulStartPos, SEEK_SET) == -1) return NULL; |
712 |
|
#elif defined(WIN32) |
713 |
|
if (SetFilePointer(pFile->hFileRead, ulStartPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) return NULL; |
714 |
#else |
#else |
715 |
if (fseek(pFile->hFileRead, ulStartPos, SEEK_SET)) return NULL; |
if (fseek(pFile->hFileRead, ulStartPos, SEEK_SET)) return NULL; |
716 |
#endif // POSIX |
#endif // POSIX |
720 |
memset(pChunkData, 0, ulBufferSize); |
memset(pChunkData, 0, ulBufferSize); |
721 |
#if POSIX |
#if POSIX |
722 |
unsigned long readWords = read(pFile->hFileRead, pChunkData, GetSize()); |
unsigned long readWords = read(pFile->hFileRead, pChunkData, GetSize()); |
723 |
|
#elif defined(WIN32) |
724 |
|
DWORD readWords; |
725 |
|
ReadFile(pFile->hFileRead, pChunkData, GetSize(), &readWords, NULL); |
726 |
#else |
#else |
727 |
unsigned long readWords = fread(pChunkData, 1, GetSize(), pFile->hFileRead); |
unsigned long readWords = fread(pChunkData, 1, GetSize(), pFile->hFileRead); |
728 |
#endif // POSIX |
#endif // POSIX |
810 |
if (write(pFile->hFileWrite, pChunkData, NewChunkSize) != NewChunkSize) { |
if (write(pFile->hFileWrite, pChunkData, NewChunkSize) != NewChunkSize) { |
811 |
throw Exception("Writing Chunk data (from RAM) failed"); |
throw Exception("Writing Chunk data (from RAM) failed"); |
812 |
} |
} |
813 |
|
#elif defined(WIN32) |
814 |
|
SetFilePointer(pFile->hFileWrite, ulWritePos, NULL/*32 bit*/, FILE_BEGIN); |
815 |
|
DWORD dwBytesWritten; |
816 |
|
WriteFile(pFile->hFileWrite, pChunkData, NewChunkSize, &dwBytesWritten, NULL); |
817 |
|
if (dwBytesWritten != NewChunkSize) { |
818 |
|
throw Exception("Writing Chunk data (from RAM) failed"); |
819 |
|
} |
820 |
#else |
#else |
821 |
fseek(pFile->hFileWrite, ulWritePos, SEEK_SET); |
fseek(pFile->hFileWrite, ulWritePos, SEEK_SET); |
822 |
if (fwrite(pChunkData, 1, NewChunkSize, pFile->hFileWrite) != NewChunkSize) { |
if (fwrite(pChunkData, 1, NewChunkSize, pFile->hFileWrite) != NewChunkSize) { |
827 |
// move chunk data from the end of the file to the appropriate position |
// move chunk data from the end of the file to the appropriate position |
828 |
int8_t* pCopyBuffer = new int8_t[4096]; |
int8_t* pCopyBuffer = new int8_t[4096]; |
829 |
unsigned long ulToMove = (NewChunkSize < CurrentChunkSize) ? NewChunkSize : CurrentChunkSize; |
unsigned long ulToMove = (NewChunkSize < CurrentChunkSize) ? NewChunkSize : CurrentChunkSize; |
830 |
|
#if defined(WIN32) |
831 |
|
DWORD iBytesMoved = 1; // we have to pass it via pointer to the Windows API, thus the correct size must be ensured |
832 |
|
#else |
833 |
int iBytesMoved = 1; |
int iBytesMoved = 1; |
834 |
|
#endif |
835 |
for (unsigned long ulOffset = 0; iBytesMoved > 0; ulOffset += iBytesMoved, ulToMove -= iBytesMoved) { |
for (unsigned long ulOffset = 0; iBytesMoved > 0; ulOffset += iBytesMoved, ulToMove -= iBytesMoved) { |
836 |
iBytesMoved = (ulToMove < 4096) ? ulToMove : 4096; |
iBytesMoved = (ulToMove < 4096) ? ulToMove : 4096; |
837 |
#if POSIX |
#if POSIX |
839 |
iBytesMoved = read(pFile->hFileRead, pCopyBuffer, iBytesMoved); |
iBytesMoved = read(pFile->hFileRead, pCopyBuffer, iBytesMoved); |
840 |
lseek(pFile->hFileWrite, ulWritePos + ulOffset, SEEK_SET); |
lseek(pFile->hFileWrite, ulWritePos + ulOffset, SEEK_SET); |
841 |
iBytesMoved = write(pFile->hFileWrite, pCopyBuffer, iBytesMoved); |
iBytesMoved = write(pFile->hFileWrite, pCopyBuffer, iBytesMoved); |
842 |
|
#elif defined(WIN32) |
843 |
|
SetFilePointer(pFile->hFileRead, ulStartPos + ulCurrentDataOffset + ulOffset, NULL/*32 bit*/, FILE_BEGIN); |
844 |
|
ReadFile(pFile->hFileRead, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL); |
845 |
|
SetFilePointer(pFile->hFileWrite, ulWritePos + ulOffset, NULL/*32 bit*/, FILE_BEGIN); |
846 |
|
WriteFile(pFile->hFileWrite, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL); |
847 |
#else |
#else |
848 |
fseek(pFile->hFileRead, ulStartPos + ulCurrentDataOffset + ulOffset, SEEK_SET); |
fseek(pFile->hFileRead, ulStartPos + ulCurrentDataOffset + ulOffset, SEEK_SET); |
849 |
iBytesMoved = fread(pCopyBuffer, 1, iBytesMoved, pFile->hFileRead); |
iBytesMoved = fread(pCopyBuffer, 1, iBytesMoved, pFile->hFileRead); |
869 |
#if POSIX |
#if POSIX |
870 |
lseek(pFile->hFileWrite, ulStartPos + NewChunkSize, SEEK_SET); |
lseek(pFile->hFileWrite, ulStartPos + NewChunkSize, SEEK_SET); |
871 |
write(pFile->hFileWrite, &cPadByte, 1); |
write(pFile->hFileWrite, &cPadByte, 1); |
872 |
|
#elif defined(WIN32) |
873 |
|
SetFilePointer(pFile->hFileWrite, ulStartPos + NewChunkSize, NULL/*32 bit*/, FILE_BEGIN); |
874 |
|
DWORD dwBytesWritten; |
875 |
|
WriteFile(pFile->hFileWrite, &cPadByte, 1, &dwBytesWritten, NULL); |
876 |
#else |
#else |
877 |
fseek(pFile->hFileWrite, ulStartPos + NewChunkSize, SEEK_SET); |
fseek(pFile->hFileWrite, ulStartPos + NewChunkSize, SEEK_SET); |
878 |
fwrite(&cPadByte, 1, 1, pFile->hFileWrite); |
fwrite(&cPadByte, 1, 1, pFile->hFileWrite); |
1135 |
return pNewChunk; |
return pNewChunk; |
1136 |
} |
} |
1137 |
|
|
1138 |
|
/** @brief Moves a sub chunk. |
1139 |
|
* |
1140 |
|
* Moves a sub chunk from one position in a list to another |
1141 |
|
* position in the same list. The pSrc chunk is placed before the |
1142 |
|
* pDst chunk. |
1143 |
|
* |
1144 |
|
* @param pSrc - sub chunk to be moved |
1145 |
|
* @param pDst - the position to move to. pSrc will be placed |
1146 |
|
* before pDst. If pDst is 0, pSrc will be placed |
1147 |
|
* last in list. |
1148 |
|
*/ |
1149 |
|
void List::MoveSubChunk(Chunk* pSrc, Chunk* pDst) { |
1150 |
|
if (!pSubChunks) LoadSubChunks(); |
1151 |
|
pSubChunks->remove(pSrc); |
1152 |
|
ChunkList::iterator iter = find(pSubChunks->begin(), pSubChunks->end(), pDst); |
1153 |
|
pSubChunks->insert(iter, pSrc); |
1154 |
|
} |
1155 |
|
|
1156 |
/** @brief Creates a new list sub chunk. |
/** @brief Creates a new list sub chunk. |
1157 |
* |
* |
1158 |
* Creates and adds a new list sub chunk to this list chunk. Note that |
* Creates and adds a new list sub chunk to this list chunk. Note that |
1174 |
* |
* |
1175 |
* Removes the sub chunk given by \a pSubChunk from this list and frees |
* Removes the sub chunk given by \a pSubChunk from this list and frees |
1176 |
* it completely from RAM. The given chunk can either be a normal sub |
* it completely from RAM. The given chunk can either be a normal sub |
1177 |
* chunk or a list sub chunk. You should call File::Save() to make this |
* chunk or a list sub chunk. In case the given chunk is a list chunk, |
1178 |
* change persistent at any time. |
* all its subchunks (if any) will be removed recursively as well. You |
1179 |
|
* should call File::Save() to make this change persistent at any time. |
1180 |
* |
* |
1181 |
* @param pSubChunk - sub chunk or sub list chunk to be removed |
* @param pSubChunk - sub chunk or sub list chunk to be removed |
1182 |
*/ |
*/ |
1207 |
#if POSIX |
#if POSIX |
1208 |
lseek(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
lseek(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
1209 |
read(pFile->hFileRead, &ListType, 4); |
read(pFile->hFileRead, &ListType, 4); |
1210 |
|
#elif defined(WIN32) |
1211 |
|
SetFilePointer(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, NULL/*32 bit*/, FILE_BEGIN); |
1212 |
|
DWORD dwBytesRead; |
1213 |
|
ReadFile(pFile->hFileRead, &ListType, 4, &dwBytesRead, NULL); |
1214 |
#else |
#else |
1215 |
fseek(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
fseek(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
1216 |
fread(&ListType, 4, 1, pFile->hFileRead); |
fread(&ListType, 4, 1, pFile->hFileRead); |
1231 |
#if POSIX |
#if POSIX |
1232 |
lseek(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
lseek(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
1233 |
write(pFile->hFileWrite, &ListType, 4); |
write(pFile->hFileWrite, &ListType, 4); |
1234 |
|
#elif defined(WIN32) |
1235 |
|
SetFilePointer(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, NULL/*32 bit*/, FILE_BEGIN); |
1236 |
|
DWORD dwBytesWritten; |
1237 |
|
WriteFile(pFile->hFileWrite, &ListType, 4, &dwBytesWritten, NULL); |
1238 |
#else |
#else |
1239 |
fseek(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
fseek(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
1240 |
fwrite(&ListType, 4, 1, pFile->hFileWrite); |
fwrite(&ListType, 4, 1, pFile->hFileWrite); |
1274 |
} |
} |
1275 |
} |
} |
1276 |
|
|
1277 |
|
void List::LoadSubChunksRecursively() { |
1278 |
|
for (List* pList = GetFirstSubList(); pList; pList = GetNextSubList()) |
1279 |
|
pList->LoadSubChunksRecursively(); |
1280 |
|
} |
1281 |
|
|
1282 |
/** @brief Write list chunk persistently e.g. to disk. |
/** @brief Write list chunk persistently e.g. to disk. |
1283 |
* |
* |
1284 |
* Stores the list chunk persistently to its actual "physical" file. All |
* Stores the list chunk persistently to its actual "physical" file. All |
1348 |
* @see AddSubChunk(), AddSubList() |
* @see AddSubChunk(), AddSubList() |
1349 |
*/ |
*/ |
1350 |
File::File(uint32_t FileType) : List(this) { |
File::File(uint32_t FileType) : List(this) { |
1351 |
|
#if defined(WIN32) |
1352 |
|
hFileRead = hFileWrite = INVALID_HANDLE_VALUE; |
1353 |
|
#else |
1354 |
hFileRead = hFileWrite = 0; |
hFileRead = hFileWrite = 0; |
1355 |
|
#endif |
1356 |
Mode = stream_mode_closed; |
Mode = stream_mode_closed; |
1357 |
bEndianNative = true; |
bEndianNative = true; |
1358 |
ulStartPos = RIFF_HEADER_SIZE; |
ulStartPos = RIFF_HEADER_SIZE; |
1378 |
hFileRead = hFileWrite = 0; |
hFileRead = hFileWrite = 0; |
1379 |
throw RIFF::Exception("Can't open \"" + path + "\""); |
throw RIFF::Exception("Can't open \"" + path + "\""); |
1380 |
} |
} |
1381 |
|
#elif defined(WIN32) |
1382 |
|
hFileRead = hFileWrite = CreateFile( |
1383 |
|
path.c_str(), GENERIC_READ, |
1384 |
|
FILE_SHARE_READ | FILE_SHARE_WRITE, |
1385 |
|
NULL, OPEN_EXISTING, |
1386 |
|
FILE_ATTRIBUTE_NORMAL, NULL |
1387 |
|
); |
1388 |
|
if (hFileRead == INVALID_HANDLE_VALUE) { |
1389 |
|
hFileRead = hFileWrite = INVALID_HANDLE_VALUE; |
1390 |
|
throw RIFF::Exception("Can't open \"" + path + "\""); |
1391 |
|
} |
1392 |
#else |
#else |
1393 |
hFileRead = hFileWrite = fopen(path.c_str(), "rb"); |
hFileRead = hFileWrite = fopen(path.c_str(), "rb"); |
1394 |
if (!hFile) throw RIFF::Exception("Can't open \"" + path + "\""); |
if (!hFileRead) throw RIFF::Exception("Can't open \"" + path + "\""); |
1395 |
#endif // POSIX |
#endif // POSIX |
1396 |
Mode = stream_mode_read; |
Mode = stream_mode_read; |
1397 |
ulStartPos = RIFF_HEADER_SIZE; |
ulStartPos = RIFF_HEADER_SIZE; |
1430 |
hFileRead = hFileWrite = 0; |
hFileRead = hFileWrite = 0; |
1431 |
throw Exception("Could not (re)open file \"" + Filename + "\" in read mode"); |
throw Exception("Could not (re)open file \"" + Filename + "\" in read mode"); |
1432 |
} |
} |
1433 |
|
#elif defined(WIN32) |
1434 |
|
if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead); |
1435 |
|
hFileRead = hFileWrite = CreateFile( |
1436 |
|
Filename.c_str(), GENERIC_READ, |
1437 |
|
FILE_SHARE_READ | FILE_SHARE_WRITE, |
1438 |
|
NULL, OPEN_EXISTING, |
1439 |
|
FILE_ATTRIBUTE_NORMAL, NULL |
1440 |
|
); |
1441 |
|
if (hFileRead == INVALID_HANDLE_VALUE) { |
1442 |
|
hFileRead = hFileWrite = INVALID_HANDLE_VALUE; |
1443 |
|
throw Exception("Could not (re)open file \"" + Filename + "\" in read mode"); |
1444 |
|
} |
1445 |
#else |
#else |
1446 |
if (hFileRead) fclose(hFileRead); |
if (hFileRead) fclose(hFileRead); |
1447 |
hFileRead = hFileWrite = fopen(path.c_str(), "rb"); |
hFileRead = hFileWrite = fopen(Filename.c_str(), "rb"); |
1448 |
if (!hFileRead) throw Exception("Could not (re)open file \"" + Filename + "\" in read mode"); |
if (!hFileRead) throw Exception("Could not (re)open file \"" + Filename + "\" in read mode"); |
1449 |
#endif |
#endif |
1450 |
__resetPos(); // reset read/write position of ALL 'Chunk' objects |
__resetPos(); // reset read/write position of ALL 'Chunk' objects |
1457 |
hFileRead = hFileWrite = open(Filename.c_str(), O_RDONLY | O_NONBLOCK); |
hFileRead = hFileWrite = open(Filename.c_str(), O_RDONLY | O_NONBLOCK); |
1458 |
throw Exception("Could not open file \"" + Filename + "\" in read+write mode"); |
throw Exception("Could not open file \"" + Filename + "\" in read+write mode"); |
1459 |
} |
} |
1460 |
|
#elif defined(WIN32) |
1461 |
|
if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead); |
1462 |
|
hFileRead = hFileWrite = CreateFile( |
1463 |
|
Filename.c_str(), |
1464 |
|
GENERIC_READ | GENERIC_WRITE, |
1465 |
|
FILE_SHARE_READ, |
1466 |
|
NULL, OPEN_ALWAYS, |
1467 |
|
FILE_ATTRIBUTE_NORMAL, NULL |
1468 |
|
); |
1469 |
|
if (hFileRead == INVALID_HANDLE_VALUE) { |
1470 |
|
hFileRead = hFileWrite = CreateFile( |
1471 |
|
Filename.c_str(), GENERIC_READ, |
1472 |
|
FILE_SHARE_READ | FILE_SHARE_WRITE, |
1473 |
|
NULL, OPEN_EXISTING, |
1474 |
|
FILE_ATTRIBUTE_NORMAL, NULL |
1475 |
|
); |
1476 |
|
throw Exception("Could not (re)open file \"" + Filename + "\" in read mode"); |
1477 |
|
} |
1478 |
#else |
#else |
1479 |
if (hFileRead) fclose(hFileRead); |
if (hFileRead) fclose(hFileRead); |
1480 |
hFileRead = hFileWrite = fopen(path.c_str(), "r+b"); |
hFileRead = hFileWrite = fopen(Filename.c_str(), "r+b"); |
1481 |
if (!hFileRead) { |
if (!hFileRead) { |
1482 |
hFileRead = hFileWrite = fopen(path.c_str(), "rb"); |
hFileRead = hFileWrite = fopen(Filename.c_str(), "rb"); |
1483 |
throw Exception("Could not open file \"" + Filename + "\" in read+write mode"); |
throw Exception("Could not open file \"" + Filename + "\" in read+write mode"); |
1484 |
} |
} |
1485 |
#endif |
#endif |
1489 |
#if POSIX |
#if POSIX |
1490 |
if (hFileRead) close(hFileRead); |
if (hFileRead) close(hFileRead); |
1491 |
if (hFileWrite) close(hFileWrite); |
if (hFileWrite) close(hFileWrite); |
1492 |
|
#elif defined(WIN32) |
1493 |
|
if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead); |
1494 |
|
if (hFileWrite != INVALID_HANDLE_VALUE) CloseHandle(hFileWrite); |
1495 |
#else |
#else |
1496 |
if (hFileRead) fclose(hFileRead); |
if (hFileRead) fclose(hFileRead); |
1497 |
if (hFileWrite) fclose(hFileWrite); |
if (hFileWrite) fclose(hFileWrite); |
1518 |
* chunk or any kind of IO error occured |
* chunk or any kind of IO error occured |
1519 |
*/ |
*/ |
1520 |
void File::Save() { |
void File::Save() { |
1521 |
|
// make sure the RIFF tree is built (from the original file) |
1522 |
|
LoadSubChunksRecursively(); |
1523 |
|
|
1524 |
// reopen file in write mode |
// reopen file in write mode |
1525 |
SetMode(stream_mode_read_write); |
SetMode(stream_mode_read_write); |
1526 |
|
|
1534 |
// first we sum up all positive chunk size changes (and skip all negative ones) |
// first we sum up all positive chunk size changes (and skip all negative ones) |
1535 |
unsigned long ulPositiveSizeDiff = 0; |
unsigned long ulPositiveSizeDiff = 0; |
1536 |
for (ChunkList::iterator iter = ResizedChunks.begin(), end = ResizedChunks.end(); iter != end; ++iter) { |
for (ChunkList::iterator iter = ResizedChunks.begin(), end = ResizedChunks.end(); iter != end; ++iter) { |
1537 |
if ((*iter)->GetNewSize() == 0) throw Exception("There is at least one empty chunk (zero size)"); |
if ((*iter)->GetNewSize() == 0) { |
1538 |
|
// just to make the exception message a bit more verbose: resolve the chunk's path |
1539 |
|
String sChunkPath; |
1540 |
|
for (Chunk* pChunk = *iter; pChunk; pChunk = pChunk->GetParent()) { |
1541 |
|
if (pChunk->GetChunkID() == CHUNK_ID_LIST) { |
1542 |
|
List* pList = (List*) pChunk; |
1543 |
|
sChunkPath = "->'" + pList->GetListTypeString() + "'" + sChunkPath; |
1544 |
|
} else { |
1545 |
|
sChunkPath = "->'" + pChunk->GetChunkIDString() + "'" + sChunkPath; |
1546 |
|
} |
1547 |
|
} |
1548 |
|
throw Exception("There is at least one empty chunk (zero size): " + sChunkPath); |
1549 |
|
} |
1550 |
if ((*iter)->GetNewSize() + 1L > (*iter)->GetSize()) { |
if ((*iter)->GetNewSize() + 1L > (*iter)->GetSize()) { |
1551 |
unsigned long ulDiff = (*iter)->GetNewSize() - (*iter)->GetSize() + 1L; // +1 in case we have to add a pad byte |
unsigned long ulDiff = (*iter)->GetNewSize() - (*iter)->GetSize() + 1L; // +1 in case we have to add a pad byte |
1552 |
ulPositiveSizeDiff += ulDiff; |
ulPositiveSizeDiff += ulDiff; |
1563 |
// ... and move current data by the same amount towards end of file. |
// ... and move current data by the same amount towards end of file. |
1564 |
int8_t* pCopyBuffer = new int8_t[4096]; |
int8_t* pCopyBuffer = new int8_t[4096]; |
1565 |
const unsigned long ulFileSize = GetSize() + RIFF_HEADER_SIZE; |
const unsigned long ulFileSize = GetSize() + RIFF_HEADER_SIZE; |
1566 |
int iBytesMoved = 1; |
#if defined(WIN32) |
1567 |
|
DWORD iBytesMoved = 1; // we have to pass it via pointer to the Windows API, thus the correct size must be ensured |
1568 |
|
#else |
1569 |
|
int iBytesMoved = 1; |
1570 |
|
#endif |
1571 |
for (unsigned long ulPos = 0; iBytesMoved > 0; ulPos += iBytesMoved) { |
for (unsigned long ulPos = 0; iBytesMoved > 0; ulPos += iBytesMoved) { |
1572 |
const unsigned long ulToMove = ulFileSize - ulPos; |
const unsigned long ulToMove = ulFileSize - ulPos; |
1573 |
iBytesMoved = (ulToMove < 4096) ? ulToMove : 4096; |
iBytesMoved = (ulToMove < 4096) ? ulToMove : 4096; |
1576 |
iBytesMoved = read(hFileRead, pCopyBuffer, iBytesMoved); |
iBytesMoved = read(hFileRead, pCopyBuffer, iBytesMoved); |
1577 |
lseek(hFileWrite, ulPos + ulPositiveSizeDiff, SEEK_SET); |
lseek(hFileWrite, ulPos + ulPositiveSizeDiff, SEEK_SET); |
1578 |
iBytesMoved = write(hFileWrite, pCopyBuffer, iBytesMoved); |
iBytesMoved = write(hFileWrite, pCopyBuffer, iBytesMoved); |
1579 |
|
#elif defined(WIN32) |
1580 |
|
SetFilePointer(hFileRead, ulPos, NULL/*32 bit*/, FILE_BEGIN); |
1581 |
|
ReadFile(hFileRead, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL); |
1582 |
|
SetFilePointer(hFileWrite, ulPos + ulPositiveSizeDiff, NULL/*32 bit*/, FILE_BEGIN); |
1583 |
|
WriteFile(hFileWrite, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL); |
1584 |
#else |
#else |
1585 |
fseek(hFileRead, ulPos, SEEK_SET); |
fseek(hFileRead, ulPos, SEEK_SET); |
1586 |
iBytesMoved = fread(pCopyBuffer, 1, iBytesMoved, hFileRead); |
iBytesMoved = fread(pCopyBuffer, 1, iBytesMoved, hFileRead); |
1619 |
void File::Save(const String& path) { |
void File::Save(const String& path) { |
1620 |
//TODO: we should make a check here if somebody tries to write to the same file and automatically call the other Save() method in that case |
//TODO: we should make a check here if somebody tries to write to the same file and automatically call the other Save() method in that case |
1621 |
|
|
1622 |
|
// make sure the RIFF tree is built (from the original file) |
1623 |
|
LoadSubChunksRecursively(); |
1624 |
|
|
1625 |
if (Filename.length() > 0) SetMode(stream_mode_read); |
if (Filename.length() > 0) SetMode(stream_mode_read); |
1626 |
// open the other (new) file for writing and truncate it to zero size |
// open the other (new) file for writing and truncate it to zero size |
1627 |
#if POSIX |
#if POSIX |
1630 |
hFileWrite = hFileRead; |
hFileWrite = hFileRead; |
1631 |
throw Exception("Could not open file \"" + path + "\" for writing"); |
throw Exception("Could not open file \"" + path + "\" for writing"); |
1632 |
} |
} |
1633 |
|
#elif defined(WIN32) |
1634 |
|
hFileWrite = CreateFile( |
1635 |
|
path.c_str(), GENERIC_WRITE, FILE_SHARE_READ, |
1636 |
|
NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL |
1637 |
|
); |
1638 |
|
if (hFileWrite == INVALID_HANDLE_VALUE) { |
1639 |
|
hFileWrite = hFileRead; |
1640 |
|
throw Exception("Could not open file \"" + path + "\" for writing"); |
1641 |
|
} |
1642 |
#else |
#else |
1643 |
hFileWrite = fopen(path.c_str(), "w+b"); |
hFileWrite = fopen(path.c_str(), "w+b"); |
1644 |
if (!hFileWrite) { |
if (!hFileWrite) { |
1661 |
if (Filename.length() > 0) { |
if (Filename.length() > 0) { |
1662 |
#if POSIX |
#if POSIX |
1663 |
close(hFileWrite); |
close(hFileWrite); |
1664 |
|
#elif defined(WIN32) |
1665 |
|
CloseHandle(hFileWrite); |
1666 |
#else |
#else |
1667 |
fclose(hFileWrite); |
fclose(hFileWrite); |
1668 |
#endif |
#endif |
1679 |
#if POSIX |
#if POSIX |
1680 |
if (ftruncate(hFileWrite, ulNewSize) < 0) |
if (ftruncate(hFileWrite, ulNewSize) < 0) |
1681 |
throw Exception("Could not resize file \"" + Filename + "\""); |
throw Exception("Could not resize file \"" + Filename + "\""); |
1682 |
|
#elif defined(WIN32) |
1683 |
|
if ( |
1684 |
|
SetFilePointer(hFileWrite, ulNewSize, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER || |
1685 |
|
!SetEndOfFile(hFileWrite) |
1686 |
|
) throw Exception("Could not resize file \"" + Filename + "\""); |
1687 |
#else |
#else |
1688 |
# error Sorry, this version of libgig only supports POSIX systems yet. |
# error Sorry, this version of libgig only supports POSIX and Windows systems yet. |
1689 |
# error Reason: portable implementation of RIFF::File::ResizeFile() is missing (yet)! |
# error Reason: portable implementation of RIFF::File::ResizeFile() is missing (yet)! |
1690 |
#endif |
#endif |
1691 |
} |
} |
1696 |
#endif // DEBUG |
#endif // DEBUG |
1697 |
#if POSIX |
#if POSIX |
1698 |
if (hFileRead) close(hFileRead); |
if (hFileRead) close(hFileRead); |
1699 |
|
#elif defined(WIN32) |
1700 |
|
if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead); |
1701 |
#else |
#else |
1702 |
if (hFileRead) fclose(hFileRead); |
if (hFileRead) fclose(hFileRead); |
1703 |
#endif // POSIX |
#endif // POSIX |
1707 |
ResizedChunks.push_back(pResizedChunk); |
ResizedChunks.push_back(pResizedChunk); |
1708 |
} |
} |
1709 |
|
|
1710 |
|
void File::UnlogResized(Chunk* pResizedChunk) { |
1711 |
|
ResizedChunks.remove(pResizedChunk); |
1712 |
|
} |
1713 |
|
|
1714 |
unsigned long File::GetFileSize() { |
unsigned long File::GetFileSize() { |
1715 |
return __GetFileSize(hFileRead); |
return __GetFileSize(hFileRead); |
1716 |
} |
} |
1722 |
long size = filestat.st_size; |
long size = filestat.st_size; |
1723 |
return size; |
return size; |
1724 |
} |
} |
1725 |
|
#elif defined(WIN32) |
1726 |
|
unsigned long File::__GetFileSize(HANDLE hFile) { |
1727 |
|
DWORD dwSize = ::GetFileSize(hFile, NULL /*32bit*/); |
1728 |
|
if (dwSize == INVALID_FILE_SIZE) |
1729 |
|
throw Exception("Windows FS error: could not determine file size"); |
1730 |
|
return dwSize; |
1731 |
|
} |
1732 |
#else // standard C functions |
#else // standard C functions |
1733 |
unsigned long File::__GetFileSize(FILE* hFile) { |
unsigned long File::__GetFileSize(FILE* hFile) { |
1734 |
long curpos = ftell(hFile); |
long curpos = ftell(hFile); |