/[svn]/libgig/trunk/src/RIFF.cpp
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revision 384 by schoenebeck, Thu Feb 17 02:22:26 2005 UTC revision 2450 by persson, Wed May 8 17:53:07 2013 UTC
# Line 1  Line 1 
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) 2003-2013 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  *
# Line 20  Line 20 
20   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
21   *   MA  02111-1307  USA                                                   *   *   MA  02111-1307  USA                                                   *
22   ***************************************************************************/   ***************************************************************************/
23  #if 1  
24    #include <algorithm>
25    #include <set>
26    #include <string.h>
27    
28  #include "RIFF.h"  #include "RIFF.h"
29    
30    #include "helper.h"
31    
32  namespace RIFF {  namespace RIFF {
33    
34    // *************** Internal functions **************
35    // *
36    
37        /// Returns a human readable path of the given chunk.
38        static String __resolveChunkPath(Chunk* pCk) {
39            String sPath;
40            for (Chunk* pChunk = pCk; pChunk; pChunk = pChunk->GetParent()) {
41                if (pChunk->GetChunkID() == CHUNK_ID_LIST) {
42                    List* pList = (List*) pChunk;
43                    sPath = "->'" + pList->GetListTypeString() + "'" + sPath;
44                } else {
45                    sPath = "->'" + pChunk->GetChunkIDString() + "'" + sPath;
46                }
47            }
48            return sPath;
49        }
50    
51    
52    
53  // *************** Chunk **************  // *************** Chunk **************
54  // *  // *
55    
56      Chunk::Chunk() {      Chunk::Chunk(File* pFile) {
57          #if DEBUG          #if DEBUG
58          std::cout << "Chunk::Chunk()" << std::endl;          std::cout << "Chunk::Chunk(File* pFile)" << std::endl;
59          #endif // DEBUG          #endif // DEBUG
60          ulPos      = 0;          ulPos      = 0;
61          pParent    = NULL;          pParent    = NULL;
62          pChunkData = NULL;          pChunkData = NULL;
63            CurrentChunkSize = 0;
64            NewChunkSize = 0;
65            ulChunkDataSize = 0;
66            ChunkID    = CHUNK_ID_RIFF;
67            this->pFile = pFile;
68      }      }
69    
70      #if POSIX      Chunk::Chunk(File* pFile, unsigned long StartPos, List* Parent) {
     Chunk::Chunk(int hFile, unsigned long StartPos, bool EndianNative, List* Parent) {  
     #else  
     Chunk::Chunk(FILE* hFile, unsigned long StartPos, bool EndianNative, List* Parent) {  
     #endif // POSIX  
71          #if DEBUG          #if DEBUG
72          std::cout << "Chunk::Chunk(FILE,ulong,bool,List*),StartPos=" << StartPos << std::endl;          std::cout << "Chunk::Chunk(File*,ulong,bool,List*),StartPos=" << StartPos << std::endl;
73          #endif // DEBUG          #endif // DEBUG
74          Chunk::hFile  = hFile;          this->pFile   = pFile;
75          ulStartPos    = StartPos + CHUNK_HEADER_SIZE;          ulStartPos    = StartPos + CHUNK_HEADER_SIZE;
         bEndianNative = EndianNative;  
76          pParent       = Parent;          pParent       = Parent;
77          ulPos         = 0;          ulPos         = 0;
78          pChunkData    = NULL;          pChunkData    = NULL;
79            CurrentChunkSize = 0;
80            NewChunkSize = 0;
81            ulChunkDataSize = 0;
82          ReadHeader(StartPos);          ReadHeader(StartPos);
83      }      }
84    
85        Chunk::Chunk(File* pFile, List* pParent, uint32_t uiChunkID, uint uiBodySize) {
86            this->pFile      = pFile;
87            ulStartPos       = 0; // arbitrary usually, since it will be updated when we write the chunk
88            this->pParent    = pParent;
89            ulPos            = 0;
90            pChunkData       = NULL;
91            ChunkID          = uiChunkID;
92            ulChunkDataSize  = 0;
93            CurrentChunkSize = 0;
94            NewChunkSize     = uiBodySize;
95        }
96    
97      Chunk::~Chunk() {      Chunk::~Chunk() {
98            if (pFile) pFile->UnlogResized(this);
99          if (pChunkData) delete[] pChunkData;          if (pChunkData) delete[] pChunkData;
100      }      }
101    
# Line 62  namespace RIFF { Line 103  namespace RIFF {
103          #if DEBUG          #if DEBUG
104          std::cout << "Chunk::Readheader(" << fPos << ") ";          std::cout << "Chunk::Readheader(" << fPos << ") ";
105          #endif // DEBUG          #endif // DEBUG
106            ChunkID = 0;
107            NewChunkSize = CurrentChunkSize = 0;
108          #if POSIX          #if POSIX
109          if (lseek(hFile, fPos, SEEK_SET) != -1) {          if (lseek(pFile->hFileRead, fPos, SEEK_SET) != -1) {
110              read(hFile, &ChunkID, 4);              read(pFile->hFileRead, &ChunkID, 4);
111              read(hFile, &ChunkSize, 4);              read(pFile->hFileRead, &CurrentChunkSize, 4);
112          #else          #elif defined(WIN32)
113          if (!fseek(hFile, fPos, SEEK_SET)) {          if (SetFilePointer(pFile->hFileRead, fPos, NULL/*32 bit*/, FILE_BEGIN) != INVALID_SET_FILE_POINTER) {
114              fread(&ChunkID, 4, 1, hFile);              DWORD dwBytesRead;
115              fread(&ChunkSize, 4, 1, hFile);              ReadFile(pFile->hFileRead, &ChunkID, 4, &dwBytesRead, NULL);
116                ReadFile(pFile->hFileRead, &CurrentChunkSize, 4, &dwBytesRead, NULL);
117            #else
118            if (!fseek(pFile->hFileRead, fPos, SEEK_SET)) {
119                fread(&ChunkID, 4, 1, pFile->hFileRead);
120                fread(&CurrentChunkSize, 4, 1, pFile->hFileRead);
121          #endif // POSIX          #endif // POSIX
122              #if WORDS_BIGENDIAN              #if WORDS_BIGENDIAN
123              if (ChunkID == CHUNK_ID_RIFF) {              if (ChunkID == CHUNK_ID_RIFF) {
124                  bEndianNative = false;                  pFile->bEndianNative = false;
125              }              }
126              #else // little endian              #else // little endian
127              if (ChunkID == CHUNK_ID_RIFX) {              if (ChunkID == CHUNK_ID_RIFX) {
128                  bEndianNative = false;                  pFile->bEndianNative = false;
129                  ChunkID = CHUNK_ID_RIFF;                  ChunkID = CHUNK_ID_RIFF;
130              }              }
131              #endif // WORDS_BIGENDIAN              #endif // WORDS_BIGENDIAN
132              if (!bEndianNative) {              if (!pFile->bEndianNative) {
133                  //swapBytes_32(&ChunkID);                  //swapBytes_32(&ChunkID);
134                  swapBytes_32(&ChunkSize);                  swapBytes_32(&CurrentChunkSize);
135              }              }
136              #if DEBUG              #if DEBUG
137              std::cout << "ckID=" << convertToString(ChunkID) << " ";              std::cout << "ckID=" << convertToString(ChunkID) << " ";
138              std::cout << "ckSize=" << ChunkSize << " ";              std::cout << "ckSize=" << CurrentChunkSize << " ";
139              std::cout << "bEndianNative=" << bEndianNative << std::endl;              std::cout << "bEndianNative=" << pFile->bEndianNative << std::endl;
140              #endif // DEBUG              #endif // DEBUG
141                NewChunkSize = CurrentChunkSize;
142          }          }
143      }      }
144    
145        void Chunk::WriteHeader(unsigned long fPos) {
146            uint32_t uiNewChunkID = ChunkID;
147            if (ChunkID == CHUNK_ID_RIFF) {
148                #if WORDS_BIGENDIAN
149                if (pFile->bEndianNative) uiNewChunkID = CHUNK_ID_RIFX;
150                #else // little endian
151                if (!pFile->bEndianNative) uiNewChunkID = CHUNK_ID_RIFX;
152                #endif // WORDS_BIGENDIAN
153            }
154    
155            uint32_t uiNewChunkSize = NewChunkSize;
156            if (!pFile->bEndianNative) {
157                swapBytes_32(&uiNewChunkSize);
158            }
159    
160            #if POSIX
161            if (lseek(pFile->hFileWrite, fPos, SEEK_SET) != -1) {
162                write(pFile->hFileWrite, &uiNewChunkID, 4);
163                write(pFile->hFileWrite, &uiNewChunkSize, 4);
164            }
165            #elif defined(WIN32)
166            if (SetFilePointer(pFile->hFileWrite, fPos, NULL/*32 bit*/, FILE_BEGIN) != INVALID_SET_FILE_POINTER) {
167                DWORD dwBytesWritten;
168                WriteFile(pFile->hFileWrite, &uiNewChunkID, 4, &dwBytesWritten, NULL);
169                WriteFile(pFile->hFileWrite, &uiNewChunkSize, 4, &dwBytesWritten, NULL);
170            }
171            #else
172            if (!fseek(pFile->hFileWrite, fPos, SEEK_SET)) {
173                fwrite(&uiNewChunkID, 4, 1, pFile->hFileWrite);
174                fwrite(&uiNewChunkSize, 4, 1, pFile->hFileWrite);
175            }
176            #endif // POSIX
177        }
178    
179      /**      /**
180       *  Returns the String representation of the chunk's ID (e.g. "RIFF",       *  Returns the String representation of the chunk's ID (e.g. "RIFF",
181       *  "LIST").       *  "LIST").
# Line 105  namespace RIFF { Line 188  namespace RIFF {
188       *  Sets the position within the chunk body, thus within the data portion       *  Sets the position within the chunk body, thus within the data portion
189       *  of the chunk (in bytes).       *  of the chunk (in bytes).
190       *       *
191         *  <b>Caution:</b> the position will be reset to zero whenever
192         *  File::Save() was called.
193         *
194       *  @param Where  - position offset (in bytes)       *  @param Where  - position offset (in bytes)
195       *  @param Whence - optional: defines to what <i>\a Where</i> relates to,       *  @param Whence - optional: defines to what <i>\a Where</i> relates to,
196       *                  if omitted \a Where relates to beginning of the chunk       *                  if omitted \a Where relates to beginning of the chunk
# Line 119  namespace RIFF { Line 205  namespace RIFF {
205                  ulPos += Where;                  ulPos += Where;
206                  break;                  break;
207              case stream_end:              case stream_end:
208                  ulPos = ChunkSize - 1 - Where;                  ulPos = CurrentChunkSize - 1 - Where;
209                  break;                  break;
210              case stream_backward:              case stream_backward:
211                  ulPos -= Where;                  ulPos -= Where;
# Line 128  namespace RIFF { Line 214  namespace RIFF {
214                  ulPos = Where;                  ulPos = Where;
215                  break;                  break;
216          }          }
217          if (ulPos > ChunkSize) ulPos = ChunkSize;          if (ulPos > CurrentChunkSize) ulPos = CurrentChunkSize;
218          return ulPos;          return ulPos;
219      }      }
220    
# Line 144  namespace RIFF { Line 230  namespace RIFF {
230       */       */
231      unsigned long Chunk::RemainingBytes() {      unsigned long Chunk::RemainingBytes() {
232         #if DEBUG         #if DEBUG
233         std::cout << "Chunk::Remainingbytes()=" << ChunkSize - ulPos << std::endl;         std::cout << "Chunk::Remainingbytes()=" << CurrentChunkSize - ulPos << std::endl;
234         #endif // DEBUG         #endif // DEBUG
235          return ChunkSize - ulPos;          return (CurrentChunkSize > ulPos) ? CurrentChunkSize - ulPos : 0;
236      }      }
237    
238      /**      /**
# Line 157  namespace RIFF { Line 243  namespace RIFF {
243       *  - RIFF::stream_closed :       *  - RIFF::stream_closed :
244       *    the data stream was closed somehow, no more reading possible       *    the data stream was closed somehow, no more reading possible
245       *  - RIFF::stream_end_reached :       *  - RIFF::stream_end_reached :
246       *    alreaady reached the end of the chunk data, no more reading       *    already reached the end of the chunk data, no more reading
247       *    possible without SetPos()       *    possible without SetPos()
248       */       */
249      stream_state_t Chunk::GetState() {      stream_state_t Chunk::GetState() {
# Line 165  namespace RIFF { Line 251  namespace RIFF {
251        std::cout << "Chunk::GetState()" << std::endl;        std::cout << "Chunk::GetState()" << std::endl;
252        #endif // DEBUG        #endif // DEBUG
253          #if POSIX          #if POSIX
254          if (hFile == 0)        return stream_closed;          if (pFile->hFileRead == 0) return stream_closed;
255            #elif defined (WIN32)
256            if (pFile->hFileRead == INVALID_HANDLE_VALUE)
257                return stream_closed;
258          #else          #else
259          if (hFile == NULL)     return stream_closed;          if (pFile->hFileRead == NULL) return stream_closed;
260          #endif // POSIX          #endif // POSIX
261          if (ulPos < ChunkSize) return stream_ready;          if (ulPos < CurrentChunkSize) return stream_ready;
262          else                   return stream_end_reached;          else                          return stream_end_reached;
263      }      }
264    
265      /**      /**
# Line 192  namespace RIFF { Line 281  namespace RIFF {
281         #if DEBUG         #if DEBUG
282         std::cout << "Chunk::Read(void*,ulong,ulong)" << std::endl;         std::cout << "Chunk::Read(void*,ulong,ulong)" << std::endl;
283         #endif // DEBUG         #endif // DEBUG
284          if (ulPos >= ChunkSize) return 0;          if (ulStartPos == 0) return 0; // is only 0 if this is a new chunk, so nothing to read (yet)
285          if (ulPos + WordCount * WordSize >= ChunkSize) WordCount = (ChunkSize - ulPos) / WordSize;          if (ulPos >= CurrentChunkSize) return 0;
286            if (ulPos + WordCount * WordSize >= CurrentChunkSize) WordCount = (CurrentChunkSize - ulPos) / WordSize;
287          #if POSIX          #if POSIX
288          if (lseek(hFile, ulStartPos + ulPos, SEEK_SET) < 0) return 0;          if (lseek(pFile->hFileRead, ulStartPos + ulPos, SEEK_SET) < 0) return 0;
289          unsigned long readWords = read(hFile, pData, WordCount * WordSize);          unsigned long readWords = read(pFile->hFileRead, pData, WordCount * WordSize);
290            if (readWords < 1) return 0;
291            readWords /= WordSize;
292            #elif defined(WIN32)
293            if (SetFilePointer(pFile->hFileRead, ulStartPos + ulPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) return 0;
294            DWORD readWords;
295            ReadFile(pFile->hFileRead, pData, WordCount * WordSize, &readWords, NULL);
296          if (readWords < 1) return 0;          if (readWords < 1) return 0;
297          readWords /= WordSize;          readWords /= WordSize;
298          #else // standard C functions          #else // standard C functions
299          if (fseek(hFile, ulStartPos + ulPos, SEEK_SET)) return 0;          if (fseek(pFile->hFileRead, ulStartPos + ulPos, SEEK_SET)) return 0;
300          unsigned long readWords = fread(pData, WordSize, WordCount, hFile);          unsigned long readWords = fread(pData, WordSize, WordCount, pFile->hFileRead);
301          #endif // POSIX          #endif // POSIX
302          if (!bEndianNative && WordSize != 1) {          if (!pFile->bEndianNative && WordSize != 1) {
303              switch (WordSize) {              switch (WordSize) {
304                  case 2:                  case 2:
305                      for (unsigned long iWord = 0; iWord < readWords; iWord++)                      for (unsigned long iWord = 0; iWord < readWords; iWord++)
# Line 223  namespace RIFF { Line 319  namespace RIFF {
319          return readWords;          return readWords;
320      }      }
321    
322        /**
323         *  Writes \a WordCount number of data words with given \a WordSize from
324         *  the buffer pointed by \a pData. Be sure to provide the correct
325         *  \a WordSize, as this will be important and taken into account for
326         *  eventual endian correction (swapping of bytes due to different
327         *  native byte order of a system). The position within the chunk will
328         *  automatically be incremented.
329         *
330         *  @param pData      source buffer (containing the data)
331         *  @param WordCount  number of data words to write
332         *  @param WordSize   size of each data word to write
333         *  @returns          number of successfully written data words
334         *  @throws RIFF::Exception  if write operation would exceed current
335         *                           chunk size or any IO error occured
336         *  @see Resize()
337         */
338        unsigned long Chunk::Write(void* pData, unsigned long WordCount, unsigned long WordSize) {
339            if (pFile->Mode != stream_mode_read_write)
340                throw Exception("Cannot write data to chunk, file has to be opened in read+write mode first");
341            if (ulPos >= CurrentChunkSize || ulPos + WordCount * WordSize > CurrentChunkSize)
342                throw Exception("End of chunk reached while trying to write data");
343            if (!pFile->bEndianNative && WordSize != 1) {
344                switch (WordSize) {
345                    case 2:
346                        for (unsigned long iWord = 0; iWord < WordCount; iWord++)
347                            swapBytes_16((uint16_t*) pData + iWord);
348                        break;
349                    case 4:
350                        for (unsigned long iWord = 0; iWord < WordCount; iWord++)
351                            swapBytes_32((uint32_t*) pData + iWord);
352                        break;
353                    default:
354                        for (unsigned long iWord = 0; iWord < WordCount; iWord++)
355                            swapBytes((uint8_t*) pData + iWord * WordSize, WordSize);
356                        break;
357                }
358            }
359            #if POSIX
360            if (lseek(pFile->hFileWrite, ulStartPos + ulPos, SEEK_SET) < 0) {
361                throw Exception("Could not seek to position " + ToString(ulPos) +
362                                " in chunk (" + ToString(ulStartPos + ulPos) + " in file)");
363            }
364            unsigned long writtenWords = write(pFile->hFileWrite, pData, WordCount * WordSize);
365            if (writtenWords < 1) throw Exception("POSIX IO Error while trying to write chunk data");
366            writtenWords /= WordSize;
367            #elif defined(WIN32)
368            if (SetFilePointer(pFile->hFileWrite, ulStartPos + ulPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) {
369                throw Exception("Could not seek to position " + ToString(ulPos) +
370                                " in chunk (" + ToString(ulStartPos + ulPos) + " in file)");
371            }
372            DWORD writtenWords;
373            WriteFile(pFile->hFileWrite, pData, WordCount * WordSize, &writtenWords, NULL);
374            if (writtenWords < 1) throw Exception("Windows IO Error while trying to write chunk data");
375            writtenWords /= WordSize;
376            #else // standard C functions
377            if (fseek(pFile->hFileWrite, ulStartPos + ulPos, SEEK_SET)) {
378                throw Exception("Could not seek to position " + ToString(ulPos) +
379                                " in chunk (" + ToString(ulStartPos + ulPos) + " in file)");
380            }
381            unsigned long writtenWords = fwrite(pData, WordSize, WordCount, pFile->hFileWrite);
382            #endif // POSIX
383            SetPos(writtenWords * WordSize, stream_curpos);
384            return writtenWords;
385        }
386    
387      /** Just an internal wrapper for the main <i>Read()</i> method with additional Exception throwing on errors. */      /** Just an internal wrapper for the main <i>Read()</i> method with additional Exception throwing on errors. */
388      unsigned long Chunk::ReadSceptical(void* pData, unsigned long WordCount, unsigned long WordSize) {      unsigned long Chunk::ReadSceptical(void* pData, unsigned long WordCount, unsigned long WordSize) {
389          unsigned long readWords = Read(pData, WordCount, WordSize);          unsigned long readWords = Read(pData, WordCount, WordSize);
# Line 249  namespace RIFF { Line 410  namespace RIFF {
410      }      }
411    
412      /**      /**
413         * Writes \a WordCount number of 8 Bit signed integer words from the
414         * buffer pointed by \a pData to the chunk's body, directly to the
415         * actual "physical" file. The position within the chunk will
416         * automatically be incremented. Note: you cannot write beyond the
417         * boundaries of the chunk, to append data to the chunk call Resize()
418         * before.
419         *
420         * @param pData             source buffer (containing the data)
421         * @param WordCount         number of 8 Bit signed integers to write
422         * @returns                 number of written integers
423         * @throws RIFF::Exception  if an IO error occured
424         * @see Resize()
425         */
426        unsigned long Chunk::WriteInt8(int8_t* pData, unsigned long WordCount) {
427            return Write(pData, WordCount, 1);
428        }
429    
430        /**
431       * Reads \a WordCount number of 8 Bit unsigned integer words and copies       * Reads \a WordCount number of 8 Bit unsigned integer words and copies
432       * it into the buffer pointed by \a pData. The buffer has to be       * it into the buffer pointed by \a pData. The buffer has to be
433       * allocated. The position within the chunk will automatically be       * allocated. The position within the chunk will automatically be
# Line 268  namespace RIFF { Line 447  namespace RIFF {
447      }      }
448    
449      /**      /**
450         * Writes \a WordCount number of 8 Bit unsigned integer words from the
451         * buffer pointed by \a pData to the chunk's body, directly to the
452         * actual "physical" file. The position within the chunk will
453         * automatically be incremented. Note: you cannot write beyond the
454         * boundaries of the chunk, to append data to the chunk call Resize()
455         * before.
456         *
457         * @param pData             source buffer (containing the data)
458         * @param WordCount         number of 8 Bit unsigned integers to write
459         * @returns                 number of written integers
460         * @throws RIFF::Exception  if an IO error occured
461         * @see Resize()
462         */
463        unsigned long Chunk::WriteUint8(uint8_t* pData, unsigned long WordCount) {
464            return Write(pData, WordCount, 1);
465        }
466    
467        /**
468       * Reads \a WordCount number of 16 Bit signed integer words and copies       * Reads \a WordCount number of 16 Bit signed integer words and copies
469       * it into the buffer pointed by \a pData. The buffer has to be       * it into the buffer pointed by \a pData. The buffer has to be
470       * allocated. Endian correction will automatically be done if needed.       * allocated. Endian correction will automatically be done if needed.
# Line 287  namespace RIFF { Line 484  namespace RIFF {
484      }      }
485    
486      /**      /**
487         * Writes \a WordCount number of 16 Bit signed integer words from the
488         * buffer pointed by \a pData to the chunk's body, directly to the
489         * actual "physical" file. The position within the chunk will
490         * automatically be incremented. Note: you cannot write beyond the
491         * boundaries of the chunk, to append data to the chunk call Resize()
492         * before.
493         *
494         * @param pData             source buffer (containing the data)
495         * @param WordCount         number of 16 Bit signed integers to write
496         * @returns                 number of written integers
497         * @throws RIFF::Exception  if an IO error occured
498         * @see Resize()
499         */
500        unsigned long Chunk::WriteInt16(int16_t* pData, unsigned long WordCount) {
501            return Write(pData, WordCount, 2);
502        }
503    
504        /**
505       * Reads \a WordCount number of 16 Bit unsigned integer words and copies       * Reads \a WordCount number of 16 Bit unsigned integer words and copies
506       * it into the buffer pointed by \a pData. The buffer has to be       * it into the buffer pointed by \a pData. The buffer has to be
507       * allocated. Endian correction will automatically be done if needed.       * allocated. Endian correction will automatically be done if needed.
# Line 306  namespace RIFF { Line 521  namespace RIFF {
521      }      }
522    
523      /**      /**
524         * Writes \a WordCount number of 16 Bit unsigned integer words from the
525         * buffer pointed by \a pData to the chunk's body, directly to the
526         * actual "physical" file. The position within the chunk will
527         * automatically be incremented. Note: you cannot write beyond the
528         * boundaries of the chunk, to append data to the chunk call Resize()
529         * before.
530         *
531         * @param pData             source buffer (containing the data)
532         * @param WordCount         number of 16 Bit unsigned integers to write
533         * @returns                 number of written integers
534         * @throws RIFF::Exception  if an IO error occured
535         * @see Resize()
536         */
537        unsigned long Chunk::WriteUint16(uint16_t* pData, unsigned long WordCount) {
538            return Write(pData, WordCount, 2);
539        }
540    
541        /**
542       * Reads \a WordCount number of 32 Bit signed integer words and copies       * Reads \a WordCount number of 32 Bit signed integer words and copies
543       * it into the buffer pointed by \a pData. The buffer has to be       * it into the buffer pointed by \a pData. The buffer has to be
544       * allocated. Endian correction will automatically be done if needed.       * allocated. Endian correction will automatically be done if needed.
# Line 325  namespace RIFF { Line 558  namespace RIFF {
558      }      }
559    
560      /**      /**
561         * Writes \a WordCount number of 32 Bit signed integer words from the
562         * buffer pointed by \a pData to the chunk's body, directly to the
563         * actual "physical" file. The position within the chunk will
564         * automatically be incremented. Note: you cannot write beyond the
565         * boundaries of the chunk, to append data to the chunk call Resize()
566         * before.
567         *
568         * @param pData             source buffer (containing the data)
569         * @param WordCount         number of 32 Bit signed integers to write
570         * @returns                 number of written integers
571         * @throws RIFF::Exception  if an IO error occured
572         * @see Resize()
573         */
574        unsigned long Chunk::WriteInt32(int32_t* pData, unsigned long WordCount) {
575            return Write(pData, WordCount, 4);
576        }
577    
578        /**
579       * Reads \a WordCount number of 32 Bit unsigned integer words and copies       * Reads \a WordCount number of 32 Bit unsigned integer words and copies
580       * it into the buffer pointed by \a pData. The buffer has to be       * it into the buffer pointed by \a pData. The buffer has to be
581       * allocated. Endian correction will automatically be done if needed.       * allocated. Endian correction will automatically be done if needed.
# Line 344  namespace RIFF { Line 595  namespace RIFF {
595      }      }
596    
597      /**      /**
598         * Reads a null-padded string of size characters and copies it
599         * into the string \a s. The position within the chunk will
600         * automatically be incremented.
601         *
602         * @param s                 destination string
603         * @param size              number of characters to read
604         * @throws RIFF::Exception  if an error occured or less than
605         *                          \a size characters could be read!
606         */
607        void Chunk::ReadString(String& s, int size) {
608            char* buf = new char[size];
609            ReadSceptical(buf, 1, size);
610            s.assign(buf, std::find(buf, buf + size, '\0'));
611            delete[] buf;
612        }
613    
614        /**
615         * Writes \a WordCount number of 32 Bit unsigned integer words from the
616         * buffer pointed by \a pData to the chunk's body, directly to the
617         * actual "physical" file. The position within the chunk will
618         * automatically be incremented. Note: you cannot write beyond the
619         * boundaries of the chunk, to append data to the chunk call Resize()
620         * before.
621         *
622         * @param pData             source buffer (containing the data)
623         * @param WordCount         number of 32 Bit unsigned integers to write
624         * @returns                 number of written integers
625         * @throws RIFF::Exception  if an IO error occured
626         * @see Resize()
627         */
628        unsigned long Chunk::WriteUint32(uint32_t* pData, unsigned long WordCount) {
629            return Write(pData, WordCount, 4);
630        }
631    
632        /**
633       * Reads one 8 Bit signed integer word and increments the position within       * Reads one 8 Bit signed integer word and increments the position within
634       * the chunk.       * the chunk.
635       *       *
# Line 443  namespace RIFF { Line 729  namespace RIFF {
729          return word;          return word;
730      }      }
731    
732        /** @brief Load chunk body into RAM.
733         *
734         * Loads the whole chunk body into memory. You can modify the data in
735         * RAM and save the data by calling File::Save() afterwards.
736         *
737         * <b>Caution:</b> the buffer pointer will be invalidated once
738         * File::Save() was called. You have to call LoadChunkData() again to
739         * get a new, valid pointer whenever File::Save() was called.
740         *
741         * You can call LoadChunkData() again if you previously scheduled to
742         * enlarge this chunk with a Resize() call. In that case the buffer will
743         * be enlarged to the new, scheduled chunk size and you can already
744         * place the new chunk data to the buffer and finally call File::Save()
745         * to enlarge the chunk physically and write the new data in one rush.
746         * This approach is definitely recommended if you have to enlarge and
747         * write new data to a lot of chunks.
748         *
749         * @returns a pointer to the data in RAM on success, NULL otherwise
750         * @throws Exception if data buffer could not be enlarged
751         * @see ReleaseChunkData()
752         */
753      void* Chunk::LoadChunkData() {      void* Chunk::LoadChunkData() {
754          if (!pChunkData) {          if (!pChunkData && pFile->Filename != "" && ulStartPos != 0) {
755              #if POSIX              #if POSIX
756              if (lseek(hFile, ulStartPos, SEEK_SET) == -1) return NULL;              if (lseek(pFile->hFileRead, ulStartPos, SEEK_SET) == -1) return NULL;
757              pChunkData = new uint8_t[GetSize()];              #elif defined(WIN32)
758              if (!pChunkData) return NULL;              if (SetFilePointer(pFile->hFileRead, ulStartPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) return NULL;
             unsigned long readWords = read(hFile, pChunkData, GetSize());  
759              #else              #else
760              if (fseek(hFile, ulStartPos, SEEK_SET)) return NULL;              if (fseek(pFile->hFileRead, ulStartPos, SEEK_SET)) return NULL;
761              pChunkData = new uint8_t[GetSize()];              #endif // POSIX
762                unsigned long ulBufferSize = (CurrentChunkSize > NewChunkSize) ? CurrentChunkSize : NewChunkSize;
763                pChunkData = new uint8_t[ulBufferSize];
764              if (!pChunkData) return NULL;              if (!pChunkData) return NULL;
765              unsigned long readWords = fread(pChunkData, 1, GetSize(), hFile);              memset(pChunkData, 0, ulBufferSize);
766                #if POSIX
767                unsigned long readWords = read(pFile->hFileRead, pChunkData, GetSize());
768                #elif defined(WIN32)
769                DWORD readWords;
770                ReadFile(pFile->hFileRead, pChunkData, GetSize(), &readWords, NULL);
771                #else
772                unsigned long readWords = fread(pChunkData, 1, GetSize(), pFile->hFileRead);
773              #endif // POSIX              #endif // POSIX
774              if (readWords != GetSize()) {              if (readWords != GetSize()) {
775                  delete[] pChunkData;                  delete[] pChunkData;
776                  return (pChunkData = NULL);                  return (pChunkData = NULL);
777              }              }
778                ulChunkDataSize = ulBufferSize;
779            } else if (NewChunkSize > ulChunkDataSize) {
780                uint8_t* pNewBuffer = new uint8_t[NewChunkSize];
781                if (!pNewBuffer) throw Exception("Could not enlarge chunk data buffer to " + ToString(NewChunkSize) + " bytes");
782                memset(pNewBuffer, 0 , NewChunkSize);
783                memcpy(pNewBuffer, pChunkData, ulChunkDataSize);
784                delete[] pChunkData;
785                pChunkData      = pNewBuffer;
786                ulChunkDataSize = NewChunkSize;
787          }          }
788          return pChunkData;          return pChunkData;
789      }      }
790    
791        /** @brief Free loaded chunk body from RAM.
792         *
793         * Frees loaded chunk body data from memory (RAM). You should call
794         * File::Save() before calling this method if you modified the data to
795         * make the changes persistent.
796         */
797      void Chunk::ReleaseChunkData() {      void Chunk::ReleaseChunkData() {
798          if (pChunkData) {          if (pChunkData) {
799              delete[] pChunkData;              delete[] pChunkData;
# Line 471  namespace RIFF { Line 801  namespace RIFF {
801          }          }
802      }      }
803    
804        /** @brief Resize chunk.
805         *
806         * Resizes this chunk's body, that is the actual size of data possible
807         * to be written to this chunk. This call will return immediately and
808         * just schedule the resize operation. You should call File::Save() to
809         * actually perform the resize operation(s) "physically" to the file.
810         * As this can take a while on large files, it is recommended to call
811         * Resize() first on all chunks which have to be resized and finally to
812         * call File::Save() to perform all those resize operations in one rush.
813         *
814         * <b>Caution:</b> You cannot directly write to enlarged chunks before
815         * calling File::Save() as this might exceed the current chunk's body
816         * boundary!
817         *
818         * @param iNewSize - new chunk body size in bytes (must be greater than zero)
819         * @throws RIFF::Exception  if \a iNewSize is less than 1
820         * @see File::Save()
821         */
822        void Chunk::Resize(int iNewSize) {
823            if (iNewSize <= 0)
824                throw Exception("There is at least one empty chunk (zero size): " + __resolveChunkPath(this));
825            if (NewChunkSize == iNewSize) return;
826            NewChunkSize = iNewSize;
827            pFile->LogAsResized(this);
828        }
829    
830        /** @brief Write chunk persistently e.g. to disk.
831         *
832         * Stores the chunk persistently to its actual "physical" file.
833         *
834         * @param ulWritePos - position within the "physical" file where this
835         *                     chunk should be written to
836         * @param ulCurrentDataOffset - offset of current (old) data within
837         *                              the file
838         * @returns new write position in the "physical" file, that is
839         *          \a ulWritePos incremented by this chunk's new size
840         *          (including its header size of course)
841         */
842        unsigned long Chunk::WriteChunk(unsigned long ulWritePos, unsigned long ulCurrentDataOffset) {
843            const unsigned long ulOriginalPos = ulWritePos;
844            ulWritePos += CHUNK_HEADER_SIZE;
845    
846            if (pFile->Mode != stream_mode_read_write)
847                throw Exception("Cannot write list chunk, file has to be opened in read+write mode");
848    
849            // if the whole chunk body was loaded into RAM
850            if (pChunkData) {
851                // make sure chunk data buffer in RAM is at least as large as the new chunk size
852                LoadChunkData();
853                // write chunk data from RAM persistently to the file
854                #if POSIX
855                lseek(pFile->hFileWrite, ulWritePos, SEEK_SET);
856                if (write(pFile->hFileWrite, pChunkData, NewChunkSize) != NewChunkSize) {
857                    throw Exception("Writing Chunk data (from RAM) failed");
858                }
859                #elif defined(WIN32)
860                SetFilePointer(pFile->hFileWrite, ulWritePos, NULL/*32 bit*/, FILE_BEGIN);
861                DWORD dwBytesWritten;
862                WriteFile(pFile->hFileWrite, pChunkData, NewChunkSize, &dwBytesWritten, NULL);
863                if (dwBytesWritten != NewChunkSize) {
864                    throw Exception("Writing Chunk data (from RAM) failed");
865                }
866                #else
867                fseek(pFile->hFileWrite, ulWritePos, SEEK_SET);
868                if (fwrite(pChunkData, 1, NewChunkSize, pFile->hFileWrite) != NewChunkSize) {
869                    throw Exception("Writing Chunk data (from RAM) failed");
870                }
871                #endif // POSIX
872            } else {
873                // move chunk data from the end of the file to the appropriate position
874                int8_t* pCopyBuffer = new int8_t[4096];
875                unsigned long ulToMove = (NewChunkSize < CurrentChunkSize) ? NewChunkSize : CurrentChunkSize;
876                #if defined(WIN32)
877                DWORD iBytesMoved = 1; // we have to pass it via pointer to the Windows API, thus the correct size must be ensured
878                #else
879                int iBytesMoved = 1;
880                #endif
881                for (unsigned long ulOffset = 0; ulToMove > 0 && iBytesMoved > 0; ulOffset += iBytesMoved, ulToMove -= iBytesMoved) {
882                    iBytesMoved = (ulToMove < 4096) ? ulToMove : 4096;
883                    #if POSIX
884                    lseek(pFile->hFileRead, ulStartPos + ulCurrentDataOffset + ulOffset, SEEK_SET);
885                    iBytesMoved = read(pFile->hFileRead, pCopyBuffer, iBytesMoved);
886                    lseek(pFile->hFileWrite, ulWritePos + ulOffset, SEEK_SET);
887                    iBytesMoved = write(pFile->hFileWrite, pCopyBuffer, iBytesMoved);
888                    #elif defined(WIN32)
889                    SetFilePointer(pFile->hFileRead, ulStartPos + ulCurrentDataOffset + ulOffset, NULL/*32 bit*/, FILE_BEGIN);
890                    ReadFile(pFile->hFileRead, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL);
891                    SetFilePointer(pFile->hFileWrite, ulWritePos + ulOffset, NULL/*32 bit*/, FILE_BEGIN);
892                    WriteFile(pFile->hFileWrite, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL);
893                    #else
894                    fseek(pFile->hFileRead, ulStartPos + ulCurrentDataOffset + ulOffset, SEEK_SET);
895                    iBytesMoved = fread(pCopyBuffer, 1, iBytesMoved, pFile->hFileRead);
896                    fseek(pFile->hFileWrite, ulWritePos + ulOffset, SEEK_SET);
897                    iBytesMoved = fwrite(pCopyBuffer, 1, iBytesMoved, pFile->hFileWrite);
898                    #endif
899                }
900                delete[] pCopyBuffer;
901                if (iBytesMoved < 0) throw Exception("Writing Chunk data (from file) failed");
902            }
903    
904            // update this chunk's header
905            CurrentChunkSize = NewChunkSize;
906            WriteHeader(ulOriginalPos);
907    
908            // update chunk's position pointers
909            ulStartPos = ulOriginalPos + CHUNK_HEADER_SIZE;
910            ulPos      = 0;
911    
912            // add pad byte if needed
913            if ((ulStartPos + NewChunkSize) % 2 != 0) {
914                const char cPadByte = 0;
915                #if POSIX
916                lseek(pFile->hFileWrite, ulStartPos + NewChunkSize, SEEK_SET);
917                write(pFile->hFileWrite, &cPadByte, 1);
918                #elif defined(WIN32)
919                SetFilePointer(pFile->hFileWrite, ulStartPos + NewChunkSize, NULL/*32 bit*/, FILE_BEGIN);
920                DWORD dwBytesWritten;
921                WriteFile(pFile->hFileWrite, &cPadByte, 1, &dwBytesWritten, NULL);
922                #else
923                fseek(pFile->hFileWrite, ulStartPos + NewChunkSize, SEEK_SET);
924                fwrite(&cPadByte, 1, 1, pFile->hFileWrite);
925                #endif
926                return ulStartPos + NewChunkSize + 1;
927            }
928    
929            return ulStartPos + NewChunkSize;
930        }
931    
932        void Chunk::__resetPos() {
933            ulPos = 0;
934        }
935    
936    
937    
938  // *************** List ***************  // *************** List ***************
939  // *  // *
940    
941      List::List() : Chunk() {      List::List(File* pFile) : Chunk(pFile) {
942        #if DEBUG        #if DEBUG
943        std::cout << "List::List()" << std::endl;        std::cout << "List::List(File* pFile)" << std::endl;
944        #endif // DEBUG        #endif // DEBUG
945          pSubChunks    = NULL;          pSubChunks    = NULL;
946          pSubChunksMap = NULL;          pSubChunksMap = NULL;
947      }      }
948    
949      #if POSIX      List::List(File* pFile, unsigned long StartPos, List* Parent)
950      List::List(int hFile, unsigned long StartPos, bool EndianNative, List* Parent)        : Chunk(pFile, StartPos, Parent) {
     #else  
     List::List(FILE* hFile, unsigned long StartPos, bool EndianNative, List* Parent)  
     #endif // POSIX  
       : Chunk(hFile, StartPos, EndianNative, Parent) {  
951          #if DEBUG          #if DEBUG
952          std::cout << "List::List(FILE*,ulong,bool,List*)" << std::endl;          std::cout << "List::List(File*,ulong,bool,List*)" << std::endl;
953          #endif // DEBUG          #endif // DEBUG
954          pSubChunks    = NULL;          pSubChunks    = NULL;
955          pSubChunksMap = NULL;          pSubChunksMap = NULL;
# Line 499  namespace RIFF { Line 957  namespace RIFF {
957          ulStartPos    = StartPos + LIST_HEADER_SIZE;          ulStartPos    = StartPos + LIST_HEADER_SIZE;
958      }      }
959    
960        List::List(File* pFile, List* pParent, uint32_t uiListID)
961          : Chunk(pFile, pParent, CHUNK_ID_LIST, 0) {
962            pSubChunks    = NULL;
963            pSubChunksMap = NULL;
964            ListType      = uiListID;
965        }
966    
967      List::~List() {      List::~List() {
968        #if DEBUG        #if DEBUG
969        std::cout << "List::~List()" << std::endl;        std::cout << "List::~List()" << std::endl;
970        #endif // DEBUG        #endif // DEBUG
971            DeleteChunkList();
972        }
973    
974        void List::DeleteChunkList() {
975          if (pSubChunks) {          if (pSubChunks) {
976              ChunkList::iterator iter = pSubChunks->begin();              ChunkList::iterator iter = pSubChunks->begin();
977              ChunkList::iterator end  = pSubChunks->end();              ChunkList::iterator end  = pSubChunks->end();
# Line 511  namespace RIFF { Line 980  namespace RIFF {
980                  iter++;                  iter++;
981              }              }
982              delete pSubChunks;              delete pSubChunks;
983                pSubChunks = NULL;
984            }
985            if (pSubChunksMap) {
986                delete pSubChunksMap;
987                pSubChunksMap = NULL;
988          }          }
         if (pSubChunksMap) delete pSubChunksMap;  
989      }      }
990    
991      /**      /**
# Line 642  namespace RIFF { Line 1115  namespace RIFF {
1115      }      }
1116    
1117      /**      /**
1118       *  Returns number subchunks within the list.       *  Returns number of subchunks within the list.
1119       */       */
1120      unsigned int List::CountSubChunks() {      unsigned int List::CountSubChunks() {
1121          if (!pSubChunks) LoadSubChunks();          if (!pSubChunks) LoadSubChunks();
# Line 693  namespace RIFF { Line 1166  namespace RIFF {
1166          return result;          return result;
1167      }      }
1168    
1169        /** @brief Creates a new sub chunk.
1170         *
1171         * Creates and adds a new sub chunk to this list chunk. Note that the
1172         * chunk's body size given by \a uiBodySize must be greater than zero.
1173         * You have to call File::Save() to make this change persistent to the
1174         * actual file and <b>before</b> performing any data write operations
1175         * on the new chunk!
1176         *
1177         * @param uiChunkID  - chunk ID of the new chunk
1178         * @param uiBodySize - size of the new chunk's body, that is its actual
1179         *                     data size (without header)
1180         * @throws RIFF::Exception if \a uiBodySize equals zero
1181         */
1182        Chunk* List::AddSubChunk(uint32_t uiChunkID, uint uiBodySize) {
1183            if (uiBodySize == 0) throw Exception("Chunk body size must be at least 1 byte");
1184            if (!pSubChunks) LoadSubChunks();
1185            Chunk* pNewChunk = new Chunk(pFile, this, uiChunkID, 0);
1186            pSubChunks->push_back(pNewChunk);
1187            (*pSubChunksMap)[uiChunkID] = pNewChunk;
1188            pNewChunk->Resize(uiBodySize);
1189            NewChunkSize += CHUNK_HEADER_SIZE;
1190            pFile->LogAsResized(this);
1191            return pNewChunk;
1192        }
1193    
1194        /** @brief Moves a sub chunk.
1195         *
1196         * Moves a sub chunk from one position in a list to another
1197         * position in the same list. The pSrc chunk is placed before the
1198         * pDst chunk.
1199         *
1200         * @param pSrc - sub chunk to be moved
1201         * @param pDst - the position to move to. pSrc will be placed
1202         *               before pDst. If pDst is 0, pSrc will be placed
1203         *               last in list.
1204         */
1205        void List::MoveSubChunk(Chunk* pSrc, Chunk* pDst) {
1206            if (!pSubChunks) LoadSubChunks();
1207            pSubChunks->remove(pSrc);
1208            ChunkList::iterator iter = find(pSubChunks->begin(), pSubChunks->end(), pDst);
1209            pSubChunks->insert(iter, pSrc);
1210        }
1211    
1212        /** @brief Creates a new list sub chunk.
1213         *
1214         * Creates and adds a new list sub chunk to this list chunk. Note that
1215         * you have to add sub chunks / sub list chunks to the new created chunk
1216         * <b>before</b> trying to make this change persisten to the actual
1217         * file with File::Save()!
1218         *
1219         * @param uiListType - list ID of the new list chunk
1220         */
1221        List* List::AddSubList(uint32_t uiListType) {
1222            if (!pSubChunks) LoadSubChunks();
1223            List* pNewListChunk = new List(pFile, this, uiListType);
1224            pSubChunks->push_back(pNewListChunk);
1225            (*pSubChunksMap)[CHUNK_ID_LIST] = pNewListChunk;
1226            NewChunkSize += LIST_HEADER_SIZE;
1227            pFile->LogAsResized(this);
1228            return pNewListChunk;
1229        }
1230    
1231        /** @brief Removes a sub chunk.
1232         *
1233         * Removes the sub chunk given by \a pSubChunk from this list and frees
1234         * it completely from RAM. The given chunk can either be a normal sub
1235         * chunk or a list sub chunk. In case the given chunk is a list chunk,
1236         * all its subchunks (if any) will be removed recursively as well. You
1237         * should call File::Save() to make this change persistent at any time.
1238         *
1239         * @param pSubChunk - sub chunk or sub list chunk to be removed
1240         */
1241        void List::DeleteSubChunk(Chunk* pSubChunk) {
1242            if (!pSubChunks) LoadSubChunks();
1243            pSubChunks->remove(pSubChunk);
1244            if ((*pSubChunksMap)[pSubChunk->GetChunkID()] == pSubChunk) {
1245                pSubChunksMap->erase(pSubChunk->GetChunkID());
1246                // try to find another chunk of the same chunk ID
1247                ChunkList::iterator iter = pSubChunks->begin();
1248                ChunkList::iterator end  = pSubChunks->end();
1249                for (; iter != end; ++iter) {
1250                    if ((*iter)->GetChunkID() == pSubChunk->GetChunkID()) {
1251                        (*pSubChunksMap)[pSubChunk->GetChunkID()] = *iter;
1252                        break; // we're done, stop search
1253                    }
1254                }
1255            }
1256            delete pSubChunk;
1257        }
1258    
1259      void List::ReadHeader(unsigned long fPos) {      void List::ReadHeader(unsigned long fPos) {
1260        #if DEBUG        #if DEBUG
1261        std::cout << "List::Readheader(ulong) ";        std::cout << "List::Readheader(ulong) ";
1262        #endif // DEBUG        #endif // DEBUG
1263          Chunk::ReadHeader(fPos);          Chunk::ReadHeader(fPos);
1264          ChunkSize -= 4;          if (CurrentChunkSize < 4) return;
1265            NewChunkSize = CurrentChunkSize -= 4;
1266          #if POSIX          #if POSIX
1267          lseek(hFile, fPos + CHUNK_HEADER_SIZE, SEEK_SET);          lseek(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, SEEK_SET);
1268          read(hFile, &ListType, 4);          read(pFile->hFileRead, &ListType, 4);
1269            #elif defined(WIN32)
1270            SetFilePointer(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, NULL/*32 bit*/, FILE_BEGIN);
1271            DWORD dwBytesRead;
1272            ReadFile(pFile->hFileRead, &ListType, 4, &dwBytesRead, NULL);
1273          #else          #else
1274          fseek(hFile, fPos + CHUNK_HEADER_SIZE, SEEK_SET);          fseek(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, SEEK_SET);
1275          fread(&ListType, 4, 1, hFile);          fread(&ListType, 4, 1, pFile->hFileRead);
1276          #endif // POSIX          #endif // POSIX
1277        #if DEBUG        #if DEBUG
1278        std::cout << "listType=" << convertToString(ListType) << std::endl;        std::cout << "listType=" << convertToString(ListType) << std::endl;
1279        #endif // DEBUG        #endif // DEBUG
1280          if (!bEndianNative) {          if (!pFile->bEndianNative) {
1281              //swapBytes_32(&ListType);              //swapBytes_32(&ListType);
1282          }          }
1283      }      }
1284    
1285        void List::WriteHeader(unsigned long fPos) {
1286            // the four list type bytes officially belong the chunk's body in the RIFF format
1287            NewChunkSize += 4;
1288            Chunk::WriteHeader(fPos);
1289            NewChunkSize -= 4; // just revert the +4 incrementation
1290            #if POSIX
1291            lseek(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, SEEK_SET);
1292            write(pFile->hFileWrite, &ListType, 4);
1293            #elif defined(WIN32)
1294            SetFilePointer(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, NULL/*32 bit*/, FILE_BEGIN);
1295            DWORD dwBytesWritten;
1296            WriteFile(pFile->hFileWrite, &ListType, 4, &dwBytesWritten, NULL);
1297            #else
1298            fseek(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, SEEK_SET);
1299            fwrite(&ListType, 4, 1, pFile->hFileWrite);
1300            #endif // POSIX
1301        }
1302    
1303      void List::LoadSubChunks() {      void List::LoadSubChunks() {
1304         #if DEBUG         #if DEBUG
1305         std::cout << "List::LoadSubChunks()";         std::cout << "List::LoadSubChunks()";
# Line 721  namespace RIFF { Line 1307  namespace RIFF {
1307          if (!pSubChunks) {          if (!pSubChunks) {
1308              pSubChunks    = new ChunkList();              pSubChunks    = new ChunkList();
1309              pSubChunksMap = new ChunkMap();              pSubChunksMap = new ChunkMap();
1310                #if defined(WIN32)
1311                if (pFile->hFileRead == INVALID_HANDLE_VALUE) return;
1312                #else
1313                if (!pFile->hFileRead) return;
1314                #endif
1315                unsigned long uiOriginalPos = GetPos();
1316                SetPos(0); // jump to beginning of list chunk body
1317              while (RemainingBytes() >= CHUNK_HEADER_SIZE) {              while (RemainingBytes() >= CHUNK_HEADER_SIZE) {
1318                  Chunk* ck;                  Chunk* ck;
1319                  uint32_t ckid;                  uint32_t ckid;
# Line 729  namespace RIFF { Line 1322  namespace RIFF {
1322         std::cout << " ckid=" << convertToString(ckid) << std::endl;         std::cout << " ckid=" << convertToString(ckid) << std::endl;
1323         #endif // DEBUG         #endif // DEBUG
1324                  if (ckid == CHUNK_ID_LIST) {                  if (ckid == CHUNK_ID_LIST) {
1325                      ck = new RIFF::List(hFile, ulStartPos + ulPos - 4, bEndianNative, this);                      ck = new RIFF::List(pFile, ulStartPos + ulPos - 4, this);
1326                      SetPos(ck->GetSize() + LIST_HEADER_SIZE - 4, RIFF::stream_curpos);                      SetPos(ck->GetSize() + LIST_HEADER_SIZE - 4, RIFF::stream_curpos);
1327                  }                  }
1328                  else { // simple chunk                  else { // simple chunk
1329                      ck = new RIFF::Chunk(hFile, ulStartPos + ulPos - 4, bEndianNative, this);                      ck = new RIFF::Chunk(pFile, ulStartPos + ulPos - 4, this);
1330                      SetPos(ck->GetSize() + CHUNK_HEADER_SIZE - 4, RIFF::stream_curpos);                      SetPos(ck->GetSize() + CHUNK_HEADER_SIZE - 4, RIFF::stream_curpos);
1331                  }                  }
1332                  pSubChunks->push_back(ck);                  pSubChunks->push_back(ck);
1333                  (*pSubChunksMap)[ckid] = ck;                  (*pSubChunksMap)[ckid] = ck;
1334                  if (GetPos() % 2 != 0) SetPos(1, RIFF::stream_curpos); // jump over pad byte                  if (GetPos() % 2 != 0) SetPos(1, RIFF::stream_curpos); // jump over pad byte
1335              }              }
1336                SetPos(uiOriginalPos); // restore position before this call
1337            }
1338        }
1339    
1340        void List::LoadSubChunksRecursively() {
1341            for (List* pList = GetFirstSubList(); pList; pList = GetNextSubList())
1342                pList->LoadSubChunksRecursively();
1343        }
1344    
1345        /** @brief Write list chunk persistently e.g. to disk.
1346         *
1347         * Stores the list chunk persistently to its actual "physical" file. All
1348         * subchunks (including sub list chunks) will be stored recursively as
1349         * well.
1350         *
1351         * @param ulWritePos - position within the "physical" file where this
1352         *                     list chunk should be written to
1353         * @param ulCurrentDataOffset - offset of current (old) data within
1354         *                              the file
1355         * @returns new write position in the "physical" file, that is
1356         *          \a ulWritePos incremented by this list chunk's new size
1357         *          (including its header size of course)
1358         */
1359        unsigned long List::WriteChunk(unsigned long ulWritePos, unsigned long ulCurrentDataOffset) {
1360            const unsigned long ulOriginalPos = ulWritePos;
1361            ulWritePos += LIST_HEADER_SIZE;
1362    
1363            if (pFile->Mode != stream_mode_read_write)
1364                throw Exception("Cannot write list chunk, file has to be opened in read+write mode");
1365    
1366            // write all subchunks (including sub list chunks) recursively
1367            if (pSubChunks) {
1368                for (ChunkList::iterator iter = pSubChunks->begin(), end = pSubChunks->end(); iter != end; ++iter) {
1369                    ulWritePos = (*iter)->WriteChunk(ulWritePos, ulCurrentDataOffset);
1370                }
1371            }
1372    
1373            // update this list chunk's header
1374            CurrentChunkSize = NewChunkSize = ulWritePos - ulOriginalPos - LIST_HEADER_SIZE;
1375            WriteHeader(ulOriginalPos);
1376    
1377            // offset of this list chunk in new written file may have changed
1378            ulStartPos = ulOriginalPos + LIST_HEADER_SIZE;
1379    
1380            return ulWritePos;
1381        }
1382    
1383        void List::__resetPos() {
1384            Chunk::__resetPos();
1385            if (pSubChunks) {
1386                for (ChunkList::iterator iter = pSubChunks->begin(), end = pSubChunks->end(); iter != end; ++iter) {
1387                    (*iter)->__resetPos();
1388                }
1389          }          }
1390      }      }
1391    
# Line 755  namespace RIFF { Line 1401  namespace RIFF {
1401  // *************** File ***************  // *************** File ***************
1402  // *  // *
1403    
1404      File::File(const String& path) : List() {  //HACK: to avoid breaking DLL compatibility to older versions of libgig we roll the new std::set<Chunk*> into the old std::list<Chunk*> container, should be replaced on member variable level soon though
1405        #if DEBUG  #define _GET_RESIZED_CHUNKS() \
1406        std::cout << "File::File("<<path<<")" << std::endl;          (reinterpret_cast<std::set<Chunk*>*>(ResizedChunks.front()))
1407        #endif // DEBUG  
1408        /** @brief Create new RIFF file.
1409         *
1410         * Use this constructor if you want to create a new RIFF file completely
1411         * "from scratch". Note: there must be no empty chunks or empty list
1412         * chunks when trying to make the new RIFF file persistent with Save()!
1413         *
1414         * Note: by default, the RIFF file will be saved in native endian
1415         * format; that is, as a RIFF file on little-endian machines and
1416         * as a RIFX file on big-endian. To change this behaviour, call
1417         * SetByteOrder() before calling Save().
1418         *
1419         * @param FileType - four-byte identifier of the RIFF file type
1420         * @see AddSubChunk(), AddSubList(), SetByteOrder()
1421         */
1422        File::File(uint32_t FileType) : List(this) {
1423            //HACK: see _GET_RESIZED_CHUNKS() comment
1424            ResizedChunks.push_back(reinterpret_cast<Chunk*>(new std::set<Chunk*>));
1425            #if defined(WIN32)
1426            hFileRead = hFileWrite = INVALID_HANDLE_VALUE;
1427            #else
1428            hFileRead = hFileWrite = 0;
1429            #endif
1430            Mode = stream_mode_closed;
1431          bEndianNative = true;          bEndianNative = true;
1432            ulStartPos = RIFF_HEADER_SIZE;
1433            ListType = FileType;
1434        }
1435    
1436        /** @brief Load existing RIFF file.
1437         *
1438         * Loads an existing RIFF file with all its chunks.
1439         *
1440         * @param path - path and file name of the RIFF file to open
1441         * @throws RIFF::Exception if error occured while trying to load the
1442         *                         given RIFF file
1443         */
1444        File::File(const String& path) : List(this), Filename(path) {
1445           #if DEBUG
1446           std::cout << "File::File("<<path<<")" << std::endl;
1447           #endif // DEBUG
1448            try {
1449                bEndianNative = true;
1450                //HACK: see _GET_RESIZED_CHUNKS() comment
1451                ResizedChunks.push_back(reinterpret_cast<Chunk*>(new std::set<Chunk*>));
1452                #if POSIX
1453                hFileRead = hFileWrite = open(path.c_str(), O_RDONLY | O_NONBLOCK);
1454                if (hFileRead <= 0) {
1455                    hFileRead = hFileWrite = 0;
1456                    throw RIFF::Exception("Can't open \"" + path + "\"");
1457                }
1458                #elif defined(WIN32)
1459                hFileRead = hFileWrite = CreateFile(
1460                                             path.c_str(), GENERIC_READ,
1461                                             FILE_SHARE_READ | FILE_SHARE_WRITE,
1462                                             NULL, OPEN_EXISTING,
1463                                             FILE_ATTRIBUTE_NORMAL |
1464                                             FILE_FLAG_RANDOM_ACCESS, NULL
1465                                         );
1466                if (hFileRead == INVALID_HANDLE_VALUE) {
1467                    hFileRead = hFileWrite = INVALID_HANDLE_VALUE;
1468                    throw RIFF::Exception("Can't open \"" + path + "\"");
1469                }
1470                #else
1471                hFileRead = hFileWrite = fopen(path.c_str(), "rb");
1472                if (!hFileRead) throw RIFF::Exception("Can't open \"" + path + "\"");
1473                #endif // POSIX
1474                Mode = stream_mode_read;
1475                ulStartPos = RIFF_HEADER_SIZE;
1476                ReadHeader(0);
1477                if (ChunkID != CHUNK_ID_RIFF && ChunkID != CHUNK_ID_RIFX) {
1478                    throw RIFF::Exception("Not a RIFF file");
1479                }
1480            }
1481            catch (...) {
1482                Cleanup();
1483                throw;
1484            }
1485        }
1486    
1487        String File::GetFileName() {
1488            return Filename;
1489        }
1490    
1491        stream_mode_t File::GetMode() {
1492            return Mode;
1493        }
1494    
1495        /** @brief Change file access mode.
1496         *
1497         * Changes files access mode either to read-only mode or to read/write
1498         * mode.
1499         *
1500         * @param NewMode - new file access mode
1501         * @returns true if mode was changed, false if current mode already
1502         *          equals new mode
1503         * @throws RIFF::Exception if new file access mode is unknown
1504         */
1505        bool File::SetMode(stream_mode_t NewMode) {
1506            if (NewMode != Mode) {
1507                switch (NewMode) {
1508                    case stream_mode_read:
1509                        #if POSIX
1510                        if (hFileRead) close(hFileRead);
1511                        hFileRead = hFileWrite = open(Filename.c_str(), O_RDONLY | O_NONBLOCK);
1512                        if (hFileRead < 0) {
1513                            hFileRead = hFileWrite = 0;
1514                            throw Exception("Could not (re)open file \"" + Filename + "\" in read mode");
1515                        }
1516                        #elif defined(WIN32)
1517                        if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead);
1518                        hFileRead = hFileWrite = CreateFile(
1519                                                     Filename.c_str(), GENERIC_READ,
1520                                                     FILE_SHARE_READ | FILE_SHARE_WRITE,
1521                                                     NULL, OPEN_EXISTING,
1522                                                     FILE_ATTRIBUTE_NORMAL |
1523                                                     FILE_FLAG_RANDOM_ACCESS,
1524                                                     NULL
1525                                                 );
1526                        if (hFileRead == INVALID_HANDLE_VALUE) {
1527                            hFileRead = hFileWrite = INVALID_HANDLE_VALUE;
1528                            throw Exception("Could not (re)open file \"" + Filename + "\" in read mode");
1529                        }
1530                        #else
1531                        if (hFileRead) fclose(hFileRead);
1532                        hFileRead = hFileWrite = fopen(Filename.c_str(), "rb");
1533                        if (!hFileRead) throw Exception("Could not (re)open file \"" + Filename + "\" in read mode");
1534                        #endif
1535                        __resetPos(); // reset read/write position of ALL 'Chunk' objects
1536                        break;
1537                    case stream_mode_read_write:
1538                        #if POSIX
1539                        if (hFileRead) close(hFileRead);
1540                        hFileRead = hFileWrite = open(Filename.c_str(), O_RDWR | O_NONBLOCK);
1541                        if (hFileRead < 0) {
1542                            hFileRead = hFileWrite = open(Filename.c_str(), O_RDONLY | O_NONBLOCK);
1543                            throw Exception("Could not open file \"" + Filename + "\" in read+write mode");
1544                        }
1545                        #elif defined(WIN32)
1546                        if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead);
1547                        hFileRead = hFileWrite = CreateFile(
1548                                                     Filename.c_str(),
1549                                                     GENERIC_READ | GENERIC_WRITE,
1550                                                     FILE_SHARE_READ,
1551                                                     NULL, OPEN_ALWAYS,
1552                                                     FILE_ATTRIBUTE_NORMAL |
1553                                                     FILE_FLAG_RANDOM_ACCESS,
1554                                                     NULL
1555                                                 );
1556                        if (hFileRead == INVALID_HANDLE_VALUE) {
1557                            hFileRead = hFileWrite = CreateFile(
1558                                                         Filename.c_str(), GENERIC_READ,
1559                                                         FILE_SHARE_READ | FILE_SHARE_WRITE,
1560                                                         NULL, OPEN_EXISTING,
1561                                                         FILE_ATTRIBUTE_NORMAL |
1562                                                         FILE_FLAG_RANDOM_ACCESS,
1563                                                         NULL
1564                                                     );
1565                            throw Exception("Could not (re)open file \"" + Filename + "\" in read+write mode");
1566                        }
1567                        #else
1568                        if (hFileRead) fclose(hFileRead);
1569                        hFileRead = hFileWrite = fopen(Filename.c_str(), "r+b");
1570                        if (!hFileRead) {
1571                            hFileRead = hFileWrite = fopen(Filename.c_str(), "rb");
1572                            throw Exception("Could not open file \"" + Filename + "\" in read+write mode");
1573                        }
1574                        #endif
1575                        __resetPos(); // reset read/write position of ALL 'Chunk' objects
1576                        break;
1577                    case stream_mode_closed:
1578                        #if POSIX
1579                        if (hFileRead)  close(hFileRead);
1580                        if (hFileWrite) close(hFileWrite);
1581                        #elif defined(WIN32)
1582                        if (hFileRead  != INVALID_HANDLE_VALUE) CloseHandle(hFileRead);
1583                        if (hFileWrite != INVALID_HANDLE_VALUE) CloseHandle(hFileWrite);
1584                        #else
1585                        if (hFileRead)  fclose(hFileRead);
1586                        if (hFileWrite) fclose(hFileWrite);
1587                        #endif
1588                        hFileRead = hFileWrite = 0;
1589                        break;
1590                    default:
1591                        throw Exception("Unknown file access mode");
1592                }
1593                Mode = NewMode;
1594                return true;
1595            }
1596            return false;
1597        }
1598    
1599        /** @brief Set the byte order to be used when saving.
1600         *
1601         * Set the byte order to be used in the file. A value of
1602         * endian_little will create a RIFF file, endian_big a RIFX file
1603         * and endian_native will create a RIFF file on little-endian
1604         * machines and RIFX on big-endian machines.
1605         *
1606         * @param Endian - endianess to use when file is saved.
1607         */
1608        void File::SetByteOrder(endian_t Endian) {
1609            #if WORDS_BIGENDIAN
1610            bEndianNative = Endian != endian_little;
1611            #else
1612            bEndianNative = Endian != endian_big;
1613            #endif
1614        }
1615    
1616        /** @brief Save changes to same file.
1617         *
1618         * Make all changes of all chunks persistent by writing them to the
1619         * actual (same) file. The file might temporarily grow to a higher size
1620         * than it will have at the end of the saving process, in case chunks
1621         * were grown.
1622         *
1623         * @throws RIFF::Exception if there is an empty chunk or empty list
1624         *                         chunk or any kind of IO error occured
1625         */
1626        void File::Save() {
1627            // make sure the RIFF tree is built (from the original file)
1628            LoadSubChunksRecursively();
1629    
1630            // reopen file in write mode
1631            SetMode(stream_mode_read_write);
1632    
1633            // to be able to save the whole file without loading everything into
1634            // RAM and without having to store the data in a temporary file, we
1635            // enlarge the file with the sum of all _positive_ chunk size
1636            // changes, move current data towards the end of the file with the
1637            // calculated sum and finally update / rewrite the file by copying
1638            // the old data back to the right position at the beginning of the file
1639    
1640            // first we sum up all positive chunk size changes (and skip all negative ones)
1641            unsigned long ulPositiveSizeDiff = 0;
1642            std::set<Chunk*>* resizedChunks = _GET_RESIZED_CHUNKS();
1643            for (std::set<Chunk*>::const_iterator iter = resizedChunks->begin(), end = resizedChunks->end(); iter != end; ++iter) {
1644                if ((*iter)->GetNewSize() == 0) {
1645                    throw Exception("There is at least one empty chunk (zero size): " + __resolveChunkPath(*iter));
1646                }
1647                unsigned long newSizePadded = (*iter)->GetNewSize() + (*iter)->GetNewSize() % 2;
1648                unsigned long oldSizePadded = (*iter)->GetSize() + (*iter)->GetSize() % 2;
1649                if (newSizePadded > oldSizePadded) ulPositiveSizeDiff += newSizePadded - oldSizePadded;
1650            }
1651    
1652            unsigned long ulWorkingFileSize = GetFileSize();
1653    
1654            // if there are positive size changes...
1655            if (ulPositiveSizeDiff > 0) {
1656                // ... we enlarge this file first ...
1657                ulWorkingFileSize += ulPositiveSizeDiff;
1658                ResizeFile(ulWorkingFileSize);
1659                // ... and move current data by the same amount towards end of file.
1660                int8_t* pCopyBuffer = new int8_t[4096];
1661                const unsigned long ulFileSize = GetSize() + RIFF_HEADER_SIZE;
1662                #if defined(WIN32)
1663                DWORD iBytesMoved = 1; // we have to pass it via pointer to the Windows API, thus the correct size must be ensured
1664                #else
1665                int iBytesMoved = 1;
1666                #endif
1667                for (unsigned long ulPos = ulFileSize; iBytesMoved > 0; ) {
1668                    iBytesMoved = (ulPos < 4096) ? ulPos : 4096;
1669                    ulPos -= iBytesMoved;
1670                    #if POSIX
1671                    lseek(hFileRead, ulPos, SEEK_SET);
1672                    iBytesMoved = read(hFileRead, pCopyBuffer, iBytesMoved);
1673                    lseek(hFileWrite, ulPos + ulPositiveSizeDiff, SEEK_SET);
1674                    iBytesMoved = write(hFileWrite, pCopyBuffer, iBytesMoved);
1675                    #elif defined(WIN32)
1676                    SetFilePointer(hFileRead, ulPos, NULL/*32 bit*/, FILE_BEGIN);
1677                    ReadFile(hFileRead, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL);
1678                    SetFilePointer(hFileWrite, ulPos + ulPositiveSizeDiff, NULL/*32 bit*/, FILE_BEGIN);
1679                    WriteFile(hFileWrite, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL);
1680                    #else
1681                    fseek(hFileRead, ulPos, SEEK_SET);
1682                    iBytesMoved = fread(pCopyBuffer, 1, iBytesMoved, hFileRead);
1683                    fseek(hFileWrite, ulPos + ulPositiveSizeDiff, SEEK_SET);
1684                    iBytesMoved = fwrite(pCopyBuffer, 1, iBytesMoved, hFileWrite);
1685                    #endif
1686                }
1687                delete[] pCopyBuffer;
1688                if (iBytesMoved < 0) throw Exception("Could not modify file while trying to enlarge it");
1689            }
1690    
1691            // rebuild / rewrite complete RIFF tree
1692            unsigned long ulTotalSize  = WriteChunk(0, ulPositiveSizeDiff);
1693            unsigned long ulActualSize = __GetFileSize(hFileWrite);
1694    
1695            // resize file to the final size
1696            if (ulTotalSize < ulActualSize) ResizeFile(ulTotalSize);
1697    
1698            // forget all resized chunks
1699            resizedChunks->clear();
1700        }
1701    
1702        /** @brief Save changes to another file.
1703         *
1704         * Make all changes of all chunks persistent by writing them to another
1705         * file. <b>Caution:</b> this method is optimized for writing to
1706         * <b>another</b> file, do not use it to save the changes to the same
1707         * file! Use File::Save() in that case instead! Ignoring this might
1708         * result in a corrupted file, especially in case chunks were resized!
1709         *
1710         * After calling this method, this File object will be associated with
1711         * the new file (given by \a path) afterwards.
1712         *
1713         * @param path - path and file name where everything should be written to
1714         */
1715        void File::Save(const String& path) {
1716            //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
1717    
1718            // make sure the RIFF tree is built (from the original file)
1719            LoadSubChunksRecursively();
1720    
1721            if (Filename.length() > 0) SetMode(stream_mode_read);
1722            // open the other (new) file for writing and truncate it to zero size
1723          #if POSIX          #if POSIX
1724          hFile = open(path.c_str(), O_RDONLY | O_NONBLOCK);          hFileWrite = open(path.c_str(), O_RDWR | O_CREAT, S_IRUSR | S_IWUSR | S_IRGRP);
1725          if (hFile <= 0) {          if (hFileWrite < 0) {
1726              hFile = 0;              hFileWrite = hFileRead;
1727              throw RIFF::Exception("Can't open \"" + path + "\"");              throw Exception("Could not open file \"" + path + "\" for writing");
1728            }
1729            #elif defined(WIN32)
1730            hFileWrite = CreateFile(
1731                             path.c_str(), GENERIC_WRITE, FILE_SHARE_READ,
1732                             NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL |
1733                             FILE_FLAG_RANDOM_ACCESS, NULL
1734                         );
1735            if (hFileWrite == INVALID_HANDLE_VALUE) {
1736                hFileWrite = hFileRead;
1737                throw Exception("Could not open file \"" + path + "\" for writing");
1738          }          }
1739          #else          #else
1740          hFile = fopen(path.c_str(), "rb");          hFileWrite = fopen(path.c_str(), "w+b");
1741          if (!hFile) throw RIFF::Exception("Can't open \"" + path + "\"");          if (!hFileWrite) {
1742          #endif // POSIX              hFileWrite = hFileRead;
1743          ulStartPos = RIFF_HEADER_SIZE;              throw Exception("Could not open file \"" + path + "\" for writing");
         ReadHeader(0);  
         if (ChunkID != CHUNK_ID_RIFF) {  
             throw RIFF::Exception("Not a RIFF file");  
1744          }          }
1745            #endif // POSIX
1746            Mode = stream_mode_read_write;
1747    
1748            // write complete RIFF tree to the other (new) file
1749            unsigned long ulTotalSize  = WriteChunk(0, 0);
1750            unsigned long ulActualSize = __GetFileSize(hFileWrite);
1751    
1752            // resize file to the final size (if the file was originally larger)
1753            if (ulTotalSize < ulActualSize) ResizeFile(ulTotalSize);
1754    
1755            // forget all resized chunks
1756            _GET_RESIZED_CHUNKS()->clear();
1757    
1758            #if POSIX
1759            if (hFileWrite) close(hFileWrite);
1760            #elif defined(WIN32)
1761            if (hFileWrite != INVALID_HANDLE_VALUE) CloseHandle(hFileWrite);
1762            #else
1763            if (hFileWrite) fclose(hFileWrite);
1764            #endif
1765            hFileWrite = hFileRead;
1766    
1767            // associate new file with this File object from now on
1768            Filename = path;
1769            Mode = (stream_mode_t) -1;       // Just set it to an undefined mode ...
1770            SetMode(stream_mode_read_write); // ... so SetMode() has to reopen the file handles.
1771        }
1772    
1773        void File::ResizeFile(unsigned long ulNewSize) {
1774            #if POSIX
1775            if (ftruncate(hFileWrite, ulNewSize) < 0)
1776                throw Exception("Could not resize file \"" + Filename + "\"");
1777            #elif defined(WIN32)
1778            if (
1779                SetFilePointer(hFileWrite, ulNewSize, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER ||
1780                !SetEndOfFile(hFileWrite)
1781            ) throw Exception("Could not resize file \"" + Filename + "\"");
1782            #else
1783            # error Sorry, this version of libgig only supports POSIX and Windows systems yet.
1784            # error Reason: portable implementation of RIFF::File::ResizeFile() is missing (yet)!
1785            #endif
1786      }      }
1787    
1788      File::~File() {      File::~File() {
1789         #if DEBUG         #if DEBUG
1790         std::cout << "File::~File()" << std::endl;         std::cout << "File::~File()" << std::endl;
1791         #endif // DEBUG         #endif // DEBUG
1792            Cleanup();
1793        }
1794    
1795        void File::Cleanup() {
1796          #if POSIX          #if POSIX
1797          if (hFile) close(hFile);          if (hFileRead) close(hFileRead);
1798            #elif defined(WIN32)
1799            if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead);
1800          #else          #else
1801          if (hFile) fclose(hFile);          if (hFileRead) fclose(hFileRead);
1802          #endif // POSIX          #endif // POSIX
1803            DeleteChunkList();
1804            pFile = NULL;
1805            //HACK: see _GET_RESIZED_CHUNKS() comment
1806            delete _GET_RESIZED_CHUNKS();
1807        }
1808    
1809        void File::LogAsResized(Chunk* pResizedChunk) {
1810            _GET_RESIZED_CHUNKS()->insert(pResizedChunk);
1811        }
1812    
1813        void File::UnlogResized(Chunk* pResizedChunk) {
1814            _GET_RESIZED_CHUNKS()->erase(pResizedChunk);
1815      }      }
1816    
1817      unsigned long File::GetFileSize() {      unsigned long File::GetFileSize() {
1818          #if POSIX          return __GetFileSize(hFileRead);
1819        }
1820    
1821        #if POSIX
1822        unsigned long File::__GetFileSize(int hFile) {
1823          struct stat filestat;          struct stat filestat;
1824          fstat(hFile, &filestat);          fstat(hFile, &filestat);
1825          long size = filestat.st_size;          long size = filestat.st_size;
1826          #else // standard C functions          return size;
1827        }
1828        #elif defined(WIN32)
1829        unsigned long File::__GetFileSize(HANDLE hFile) {
1830            DWORD dwSize = ::GetFileSize(hFile, NULL /*32bit*/);
1831            if (dwSize == INVALID_FILE_SIZE)
1832                throw Exception("Windows FS error: could not determine file size");
1833            return dwSize;
1834        }
1835        #else // standard C functions
1836        unsigned long File::__GetFileSize(FILE* hFile) {
1837          long curpos = ftell(hFile);          long curpos = ftell(hFile);
1838          fseek(hFile, 0, SEEK_END);          fseek(hFile, 0, SEEK_END);
1839          long size = ftell(hFile);          long size = ftell(hFile);
1840          fseek(hFile, curpos, SEEK_SET);          fseek(hFile, curpos, SEEK_SET);
         #endif // POSIX  
1841          return size;          return size;
1842      }      }
1843        #endif
1844    
1845    
1846  // *************** Exception ***************  // *************** Exception ***************
# Line 811  namespace RIFF { Line 1850  namespace RIFF {
1850          std::cout << "RIFF::Exception: " << Message << std::endl;          std::cout << "RIFF::Exception: " << Message << std::endl;
1851      }      }
1852    
1853    
1854    // *************** functions ***************
1855    // *
1856    
1857        /**
1858         * Returns the name of this C++ library. This is usually "libgig" of
1859         * course. This call is equivalent to DLS::libraryName() and
1860         * gig::libraryName().
1861         */
1862        String libraryName() {
1863            return PACKAGE;
1864        }
1865    
1866        /**
1867         * Returns version of this C++ library. This call is equivalent to
1868         * DLS::libraryVersion() and gig::libraryVersion().
1869         */
1870        String libraryVersion() {
1871            return VERSION;
1872        }
1873    
1874  } // namespace RIFF  } // namespace RIFF
 #endif  
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