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namespace RIFF { |
namespace RIFF { |
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32 |
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// *************** Internal functions ************** |
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// * |
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35 |
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/// Returns a human readable path of the given chunk. |
36 |
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String __resolveChunkPath(Chunk* pCk) { |
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String sPath; |
38 |
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for (Chunk* pChunk = pCk; pChunk; pChunk = pChunk->GetParent()) { |
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if (pChunk->GetChunkID() == CHUNK_ID_LIST) { |
40 |
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List* pList = (List*) pChunk; |
41 |
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sPath = "->'" + pList->GetListTypeString() + "'" + sPath; |
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} else { |
43 |
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sPath = "->'" + pChunk->GetChunkIDString() + "'" + sPath; |
44 |
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} |
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} |
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return sPath; |
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} |
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51 |
// *************** Chunk ************** |
// *************** Chunk ************** |
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// * |
// * |
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89 |
} |
} |
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91 |
Chunk::~Chunk() { |
Chunk::~Chunk() { |
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if (CurrentChunkSize != NewChunkSize) pFile->UnlogResized(this); |
93 |
if (pChunkData) delete[] pChunkData; |
if (pChunkData) delete[] pChunkData; |
94 |
} |
} |
95 |
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794 |
* @see File::Save() |
* @see File::Save() |
795 |
*/ |
*/ |
796 |
void Chunk::Resize(int iNewSize) { |
void Chunk::Resize(int iNewSize) { |
797 |
if (iNewSize <= 0) throw Exception("Chunk size must be at least one byte"); |
if (iNewSize <= 0) |
798 |
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throw Exception("There is at least one empty chunk (zero size): " + __resolveChunkPath(this)); |
799 |
if (NewChunkSize == iNewSize) return; |
if (NewChunkSize == iNewSize) return; |
800 |
NewChunkSize = iNewSize; |
NewChunkSize = iNewSize; |
801 |
pFile->LogAsResized(this); |
pFile->LogAsResized(this); |
1155 |
return pNewChunk; |
return pNewChunk; |
1156 |
} |
} |
1157 |
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1158 |
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/** @brief Moves a sub chunk. |
1159 |
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* |
1160 |
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* Moves a sub chunk from one position in a list to another |
1161 |
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* position in the same list. The pSrc chunk is placed before the |
1162 |
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* pDst chunk. |
1163 |
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* |
1164 |
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* @param pSrc - sub chunk to be moved |
1165 |
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* @param pDst - the position to move to. pSrc will be placed |
1166 |
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* before pDst. If pDst is 0, pSrc will be placed |
1167 |
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* last in list. |
1168 |
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*/ |
1169 |
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void List::MoveSubChunk(Chunk* pSrc, Chunk* pDst) { |
1170 |
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if (!pSubChunks) LoadSubChunks(); |
1171 |
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pSubChunks->remove(pSrc); |
1172 |
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ChunkList::iterator iter = find(pSubChunks->begin(), pSubChunks->end(), pDst); |
1173 |
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pSubChunks->insert(iter, pSrc); |
1174 |
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} |
1175 |
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1176 |
/** @brief Creates a new list sub chunk. |
/** @brief Creates a new list sub chunk. |
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* |
* |
1178 |
* 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 |
1268 |
if (!pSubChunks) { |
if (!pSubChunks) { |
1269 |
pSubChunks = new ChunkList(); |
pSubChunks = new ChunkList(); |
1270 |
pSubChunksMap = new ChunkMap(); |
pSubChunksMap = new ChunkMap(); |
1271 |
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#if defined(WIN32) |
1272 |
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if (pFile->hFileRead == INVALID_HANDLE_VALUE) return; |
1273 |
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#else |
1274 |
if (!pFile->hFileRead) return; |
if (!pFile->hFileRead) return; |
1275 |
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#endif |
1276 |
unsigned long uiOriginalPos = GetPos(); |
unsigned long uiOriginalPos = GetPos(); |
1277 |
SetPos(0); // jump to beginning of list chunk body |
SetPos(0); // jump to beginning of list chunk body |
1278 |
while (RemainingBytes() >= CHUNK_HEADER_SIZE) { |
while (RemainingBytes() >= CHUNK_HEADER_SIZE) { |
1368 |
* "from scratch". Note: there must be no empty chunks or empty list |
* "from scratch". Note: there must be no empty chunks or empty list |
1369 |
* chunks when trying to make the new RIFF file persistent with Save()! |
* chunks when trying to make the new RIFF file persistent with Save()! |
1370 |
* |
* |
1371 |
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* Note: by default, the RIFF file will be saved in native endian |
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* format; that is, as a RIFF file on little-endian machines and |
1373 |
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* as a RIFX file on big-endian. To change this behaviour, call |
1374 |
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* SetByteOrder() before calling Save(). |
1375 |
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* |
1376 |
* @param FileType - four-byte identifier of the RIFF file type |
* @param FileType - four-byte identifier of the RIFF file type |
1377 |
* @see AddSubChunk(), AddSubList() |
* @see AddSubChunk(), AddSubList(), SetByteOrder() |
1378 |
*/ |
*/ |
1379 |
File::File(uint32_t FileType) : List(this) { |
File::File(uint32_t FileType) : List(this) { |
1380 |
#if defined(WIN32) |
#if defined(WIN32) |
1502 |
NULL, OPEN_EXISTING, |
NULL, OPEN_EXISTING, |
1503 |
FILE_ATTRIBUTE_NORMAL, NULL |
FILE_ATTRIBUTE_NORMAL, NULL |
1504 |
); |
); |
1505 |
throw Exception("Could not (re)open file \"" + Filename + "\" in read mode"); |
throw Exception("Could not (re)open file \"" + Filename + "\" in read+write mode"); |
1506 |
} |
} |
1507 |
#else |
#else |
1508 |
if (hFileRead) fclose(hFileRead); |
if (hFileRead) fclose(hFileRead); |
1536 |
return false; |
return false; |
1537 |
} |
} |
1538 |
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1539 |
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/** @brief Set the byte order to be used when saving. |
1540 |
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* |
1541 |
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* Set the byte order to be used in the file. A value of |
1542 |
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* endian_little will create a RIFF file, endian_big a RIFX file |
1543 |
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* and endian_native will create a RIFF file on little-endian |
1544 |
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* machines and RIFX on big-endian machines. |
1545 |
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* |
1546 |
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* @param Endian - endianess to use when file is saved. |
1547 |
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*/ |
1548 |
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void File::SetByteOrder(endian_t Endian) { |
1549 |
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#if WORDS_BIGENDIAN |
1550 |
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bEndianNative = Endian != endian_little; |
1551 |
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#else |
1552 |
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bEndianNative = Endian != endian_big; |
1553 |
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#endif |
1554 |
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} |
1555 |
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1556 |
/** @brief Save changes to same file. |
/** @brief Save changes to same file. |
1557 |
* |
* |
1558 |
* Make all changes of all chunks persistent by writing them to the |
* Make all changes of all chunks persistent by writing them to the |
1580 |
// 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) |
1581 |
unsigned long ulPositiveSizeDiff = 0; |
unsigned long ulPositiveSizeDiff = 0; |
1582 |
for (ChunkList::iterator iter = ResizedChunks.begin(), end = ResizedChunks.end(); iter != end; ++iter) { |
for (ChunkList::iterator iter = ResizedChunks.begin(), end = ResizedChunks.end(); iter != end; ++iter) { |
1583 |
if ((*iter)->GetNewSize() == 0) throw Exception("There is at least one empty chunk (zero size)"); |
if ((*iter)->GetNewSize() == 0) { |
1584 |
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throw Exception("There is at least one empty chunk (zero size): " + __resolveChunkPath(*iter)); |
1585 |
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} |
1586 |
if ((*iter)->GetNewSize() + 1L > (*iter)->GetSize()) { |
if ((*iter)->GetNewSize() + 1L > (*iter)->GetSize()) { |
1587 |
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 |
1588 |
ulPositiveSizeDiff += ulDiff; |
ulPositiveSizeDiff += ulDiff; |
1694 |
// forget all resized chunks |
// forget all resized chunks |
1695 |
ResizedChunks.clear(); |
ResizedChunks.clear(); |
1696 |
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1697 |
if (Filename.length() > 0) { |
#if POSIX |
1698 |
#if POSIX |
if (hFileWrite) close(hFileWrite); |
1699 |
close(hFileWrite); |
#elif defined(WIN32) |
1700 |
#elif defined(WIN32) |
if (hFileWrite != INVALID_HANDLE_VALUE) CloseHandle(hFileWrite); |
1701 |
CloseHandle(hFileWrite); |
#else |
1702 |
#else |
if (hFileWrite) fclose(hFileWrite); |
1703 |
fclose(hFileWrite); |
#endif |
1704 |
#endif |
hFileWrite = hFileRead; |
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hFileWrite = hFileRead; |
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} |
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1705 |
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1706 |
// associate new file with this File object from now on |
// associate new file with this File object from now on |
1707 |
Filename = path; |
Filename = path; |
1741 |
ResizedChunks.push_back(pResizedChunk); |
ResizedChunks.push_back(pResizedChunk); |
1742 |
} |
} |
1743 |
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1744 |
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void File::UnlogResized(Chunk* pResizedChunk) { |
1745 |
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ResizedChunks.remove(pResizedChunk); |
1746 |
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} |
1747 |
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1748 |
unsigned long File::GetFileSize() { |
unsigned long File::GetFileSize() { |
1749 |
return __GetFileSize(hFileRead); |
return __GetFileSize(hFileRead); |
1750 |
} |
} |