/[svn]/libgig/trunk/src/RIFF.cpp

Diff of /libgig/trunk/src/RIFF.cpp

Parent Directory | Revision Log | View Patch Patch

-revision 808 by schoenebeck,
Tue Nov 22 09:11:17 2005 UTC
+revision 1301 by persson,
Sat Aug 25 09:59:53 2007 UTC
 Line 1
  /***************************************************************************
   *                                                                         *
-  *   libgig - C++ cross-platform Gigasampler format file loader library    *
+  *   libgig - C++ cross-platform Gigasampler format file access library    *
   *                                                                         *
-  *   Copyright (C) 2003-2005 by Christian Schoenebeck                      *
+  *   Copyright (C) 2003-2007 by Christian Schoenebeck                      *
   *                              <cuse@users.sourceforge.net>               *
   *                                                                         *
   *   This library is free software; you can redistribute it and/or modify  *
 Line 29
  namespace RIFF {
+ // *************** Internal functions **************
+ // *
+     /// Returns a human readable path of the given chunk.
+     String __resolveChunkPath(Chunk* pCk) {
+         String sPath;
+         for (Chunk* pChunk = pCk; pChunk; pChunk = pChunk->GetParent()) {
+             if (pChunk->GetChunkID() == CHUNK_ID_LIST) {
+                 List* pList = (List*) pChunk;
+                 sPath = "->'" + pList->GetListTypeString() + "'" + sPath;
+             } else {
+                 sPath = "->'" + pChunk->GetChunkIDString() + "'" + sPath;
+             }
+         }
+         return sPath;
+     }
  // *************** Chunk **************
  // *
-Line 70 
 namespace RIFF {
+Line 89 
 namespace RIFF {
      }
      Chunk::~Chunk() {
+         if (CurrentChunkSize != NewChunkSize) pFile->UnlogResized(this);
          if (pChunkData) delete[] pChunkData;
      }
-Line 81 
 namespace RIFF {
+Line 101 
 namespace RIFF {
          if (lseek(pFile->hFileRead, fPos, SEEK_SET) != -1) {
              read(pFile->hFileRead, &ChunkID, 4);
              read(pFile->hFileRead, &CurrentChunkSize, 4);
+         #elif defined(WIN32)
+         if (SetFilePointer(pFile->hFileRead, fPos, NULL/*32 bit*/, FILE_BEGIN) != INVALID_SET_FILE_POINTER) {
+             DWORD dwBytesRead;
+             ReadFile(pFile->hFileRead, &ChunkID, 4, &dwBytesRead, NULL);
+             ReadFile(pFile->hFileRead, &CurrentChunkSize, 4, &dwBytesRead, NULL);
          #else
          if (!fseek(pFile->hFileRead, fPos, SEEK_SET)) {
              fread(&ChunkID, 4, 1, pFile->hFileRead);
-Line 129 
 namespace RIFF {
+Line 154 
 namespace RIFF {
              write(pFile->hFileWrite, &uiNewChunkID, 4);
              write(pFile->hFileWrite, &uiNewChunkSize, 4);
          }
+         #elif defined(WIN32)
+         if (SetFilePointer(pFile->hFileWrite, fPos, NULL/*32 bit*/, FILE_BEGIN) != INVALID_SET_FILE_POINTER) {
+             DWORD dwBytesWritten;
+             WriteFile(pFile->hFileWrite, &uiNewChunkID, 4, &dwBytesWritten, NULL);
+             WriteFile(pFile->hFileWrite, &uiNewChunkSize, 4, &dwBytesWritten, NULL);
+         }
          #else
          if (!fseek(pFile->hFileWrite, fPos, SEEK_SET)) {
              fwrite(&uiNewChunkID, 4, 1, pFile->hFileWrite);
-Line 212 
 namespace RIFF {
+Line 243 
 namespace RIFF {
        std::cout << "Chunk::GetState()" << std::endl;
        #endif // DEBUG
          #if POSIX
-         if (pFile->hFileRead == 0)    return stream_closed;
+         if (pFile->hFileRead == 0) return stream_closed;
+         #elif defined (WIN32)
+         if (pFile->hFileRead == INVALID_HANDLE_VALUE)
+             return stream_closed;
          #else
          if (pFile->hFileRead == NULL) return stream_closed;
          #endif // POSIX
-Line 246 
 namespace RIFF {
+Line 280 
 namespace RIFF {
          unsigned long readWords = read(pFile->hFileRead, pData, WordCount * WordSize);
          if (readWords < 1) return 0;
          readWords /= WordSize;
+         #elif defined(WIN32)
+         if (SetFilePointer(pFile->hFileRead, ulStartPos + ulPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) return 0;
+         DWORD readWords;
+         ReadFile(pFile->hFileRead, pData, WordCount * WordSize, &readWords, NULL);
+         if (readWords < 1) return 0;
+         readWords /= WordSize;
          #else // standard C functions
          if (fseek(pFile->hFileRead, ulStartPos + ulPos, SEEK_SET)) return 0;
          unsigned long readWords = fread(pData, WordSize, WordCount, pFile->hFileRead);
-Line 315 
 namespace RIFF {
+Line 355 
 namespace RIFF {
          unsigned long writtenWords = write(pFile->hFileWrite, pData, WordCount * WordSize);
          if (writtenWords < 1) throw Exception("POSIX IO Error while trying to write chunk data");
          writtenWords /= WordSize;
+         #elif defined(WIN32)
+         if (SetFilePointer(pFile->hFileWrite, ulStartPos + ulPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) {
+             throw Exception("Could not seek to position " + ToString(ulPos) +
+                             " in chunk (" + ToString(ulStartPos + ulPos) + " in file)");
+         }
+         DWORD writtenWords;
+         WriteFile(pFile->hFileWrite, pData, WordCount * WordSize, &writtenWords, NULL);
+         if (writtenWords < 1) throw Exception("Windows IO Error while trying to write chunk data");
+         writtenWords /= WordSize;
          #else // standard C functions
          if (fseek(pFile->hFileWrite, ulStartPos + ulPos, SEEK_SET)) {
              throw Exception("Could not seek to position " + ToString(ulPos) +
-Line 679 
 namespace RIFF {
+Line 728 
 namespace RIFF {
          if (!pChunkData && pFile->Filename != "") {
              #if POSIX
              if (lseek(pFile->hFileRead, ulStartPos, SEEK_SET) == -1) return NULL;
+             #elif defined(WIN32)
+             if (SetFilePointer(pFile->hFileRead, ulStartPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) return NULL;
              #else
              if (fseek(pFile->hFileRead, ulStartPos, SEEK_SET)) return NULL;
              #endif // POSIX
-Line 688 
 namespace RIFF {
+Line 739 
 namespace RIFF {
              memset(pChunkData, 0, ulBufferSize);
              #if POSIX
              unsigned long readWords = read(pFile->hFileRead, pChunkData, GetSize());
+             #elif defined(WIN32)
+             DWORD readWords;
+             ReadFile(pFile->hFileRead, pChunkData, GetSize(), &readWords, NULL);
              #else
              unsigned long readWords = fread(pChunkData, 1, GetSize(), pFile->hFileRead);
              #endif // POSIX
-Line 740 
 namespace RIFF {
+Line 794 
 namespace RIFF {
       * @see File::Save()
       */
      void Chunk::Resize(int iNewSize) {
-         if (iNewSize <= 0) throw Exception("Chunk size must be at least one byte");
+         if (iNewSize <= 0)
+             throw Exception("There is at least one empty chunk (zero size): " + __resolveChunkPath(this));
          if (NewChunkSize == iNewSize) return;
          NewChunkSize = iNewSize;
          pFile->LogAsResized(this);
-Line 775 
 namespace RIFF {
+Line 830 
 namespace RIFF {
              if (write(pFile->hFileWrite, pChunkData, NewChunkSize) != NewChunkSize) {
                  throw Exception("Writing Chunk data (from RAM) failed");
              }
+             #elif defined(WIN32)
+             SetFilePointer(pFile->hFileWrite, ulWritePos, NULL/*32 bit*/, FILE_BEGIN);
+             DWORD dwBytesWritten;
+             WriteFile(pFile->hFileWrite, pChunkData, NewChunkSize, &dwBytesWritten, NULL);
+             if (dwBytesWritten != NewChunkSize) {
+                 throw Exception("Writing Chunk data (from RAM) failed");
+             }
              #else
              fseek(pFile->hFileWrite, ulWritePos, SEEK_SET);
              if (fwrite(pChunkData, 1, NewChunkSize, pFile->hFileWrite) != NewChunkSize) {
-Line 785 
 namespace RIFF {
+Line 847 
 namespace RIFF {
              // move chunk data from the end of the file to the appropriate position
              int8_t* pCopyBuffer = new int8_t[4096];
              unsigned long ulToMove = (NewChunkSize < CurrentChunkSize) ? NewChunkSize : CurrentChunkSize;
+             #if defined(WIN32)
+             DWORD iBytesMoved = 1; // we have to pass it via pointer to the Windows API, thus the correct size must be ensured
+             #else
              int iBytesMoved = 1;
+             #endif
              for (unsigned long ulOffset = 0; iBytesMoved > 0; ulOffset += iBytesMoved, ulToMove -= iBytesMoved) {
                  iBytesMoved = (ulToMove < 4096) ? ulToMove : 4096;
                  #if POSIX
-Line 793 
 namespace RIFF {
+Line 859 
 namespace RIFF {
                  iBytesMoved = read(pFile->hFileRead, pCopyBuffer, iBytesMoved);
                  lseek(pFile->hFileWrite, ulWritePos + ulOffset, SEEK_SET);
                  iBytesMoved = write(pFile->hFileWrite, pCopyBuffer, iBytesMoved);
+                 #elif defined(WIN32)
+                 SetFilePointer(pFile->hFileRead, ulStartPos + ulCurrentDataOffset + ulOffset, NULL/*32 bit*/, FILE_BEGIN);
+                 ReadFile(pFile->hFileRead, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL);
+                 SetFilePointer(pFile->hFileWrite, ulWritePos + ulOffset, NULL/*32 bit*/, FILE_BEGIN);
+                 WriteFile(pFile->hFileWrite, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL);
                  #else
                  fseek(pFile->hFileRead, ulStartPos + ulCurrentDataOffset + ulOffset, SEEK_SET);
                  iBytesMoved = fread(pCopyBuffer, 1, iBytesMoved, pFile->hFileRead);
-Line 818 
 namespace RIFF {
+Line 889 
 namespace RIFF {
              #if POSIX
              lseek(pFile->hFileWrite, ulStartPos + NewChunkSize, SEEK_SET);
              write(pFile->hFileWrite, &cPadByte, 1);
+             #elif defined(WIN32)
+             SetFilePointer(pFile->hFileWrite, ulStartPos + NewChunkSize, NULL/*32 bit*/, FILE_BEGIN);
+             DWORD dwBytesWritten;
+             WriteFile(pFile->hFileWrite, &cPadByte, 1, &dwBytesWritten, NULL);
              #else
              fseek(pFile->hFileWrite, ulStartPos + NewChunkSize, SEEK_SET);
              fwrite(&cPadByte, 1, 1, pFile->hFileWrite);
-Line 1080 
 namespace RIFF {
+Line 1155 
 namespace RIFF {
          return pNewChunk;
      }
+     /** @brief Moves a sub chunk.
+      *
+      * Moves a sub chunk from one position in a list to another
+      * position in the same list. The pSrc chunk is placed before the
+      * pDst chunk.
+      *
+      * @param pSrc - sub chunk to be moved
+      * @param pDst - the position to move to. pSrc will be placed
+      *               before pDst. If pDst is 0, pSrc will be placed
+      *               last in list.
+      */
+     void List::MoveSubChunk(Chunk* pSrc, Chunk* pDst) {
+         if (!pSubChunks) LoadSubChunks();
+         pSubChunks->remove(pSrc);
+         ChunkList::iterator iter = find(pSubChunks->begin(), pSubChunks->end(), pDst);
+         pSubChunks->insert(iter, pSrc);
+     }
      /** @brief Creates a new list sub chunk.
       *
       * Creates and adds a new list sub chunk to this list chunk. Note that
-Line 1101 
 namespace RIFF {
+Line 1194 
 namespace RIFF {
       *
       * Removes the sub chunk given by \a pSubChunk from this list and frees
       * it completely from RAM. The given chunk can either be a normal sub
-      * chunk or a list sub chunk. You should call File::Save() to make this
+      * chunk or a list sub chunk. In case the given chunk is a list chunk,
-      * change persistent at any time.
+      * all its subchunks (if any) will be removed recursively as well. You
+      * should call File::Save() to make this change persistent at any time.
       *
       * @param pSubChunk - sub chunk or sub list chunk to be removed
       */
-Line 1133 
 namespace RIFF {
+Line 1227 
 namespace RIFF {
          #if POSIX
          lseek(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, SEEK_SET);
          read(pFile->hFileRead, &ListType, 4);
+         #elif defined(WIN32)
+         SetFilePointer(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, NULL/*32 bit*/, FILE_BEGIN);
+         DWORD dwBytesRead;
+         ReadFile(pFile->hFileRead, &ListType, 4, &dwBytesRead, NULL);
          #else
          fseek(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, SEEK_SET);
          fread(&ListType, 4, 1, pFile->hFileRead);
-Line 1153 
 namespace RIFF {
+Line 1251 
 namespace RIFF {
          #if POSIX
          lseek(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, SEEK_SET);
          write(pFile->hFileWrite, &ListType, 4);
+         #elif defined(WIN32)
+         SetFilePointer(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, NULL/*32 bit*/, FILE_BEGIN);
+         DWORD dwBytesWritten;
+         WriteFile(pFile->hFileWrite, &ListType, 4, &dwBytesWritten, NULL);
          #else
          fseek(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, SEEK_SET);
          fwrite(&ListType, 4, 1, pFile->hFileWrite);
-Line 1166 
 namespace RIFF {
+Line 1268 
 namespace RIFF {
          if (!pSubChunks) {
              pSubChunks    = new ChunkList();
              pSubChunksMap = new ChunkMap();
+             #if defined(WIN32)
+             if (pFile->hFileRead == INVALID_HANDLE_VALUE) return;
+             #else
              if (!pFile->hFileRead) return;
+             #endif
              unsigned long uiOriginalPos = GetPos();
              SetPos(0); // jump to beginning of list chunk body
              while (RemainingBytes() >= CHUNK_HEADER_SIZE) {
-Line 1192 
 namespace RIFF {
+Line 1298 
 namespace RIFF {
          }
      }
+     void List::LoadSubChunksRecursively() {
+         for (List* pList = GetFirstSubList(); pList; pList = GetNextSubList())
+             pList->LoadSubChunksRecursively();
+     }
      /** @brief Write list chunk persistently e.g. to disk.
       *
       * Stores the list chunk persistently to its actual "physical" file. All
-Line 1257 
 namespace RIFF {
+Line 1368 
 namespace RIFF {
       * "from scratch". Note: there must be no empty chunks or empty list
       * chunks when trying to make the new RIFF file persistent with Save()!
       *
+      * Note: by default, the RIFF file will be saved in native endian
+      * format; that is, as a RIFF file on little-endian machines and
+      * as a RIFX file on big-endian. To change this behaviour, call
+      * SetByteOrder() before calling Save().
+      *
       * @param FileType - four-byte identifier of the RIFF file type
-      * @see AddSubChunk(), AddSubList()
+      * @see AddSubChunk(), AddSubList(), SetByteOrder()
       */
      File::File(uint32_t FileType) : List(this) {
+         #if defined(WIN32)
+         hFileRead = hFileWrite = INVALID_HANDLE_VALUE;
+         #else
          hFileRead = hFileWrite = 0;
+         #endif
          Mode = stream_mode_closed;
          bEndianNative = true;
          ulStartPos = RIFF_HEADER_SIZE;
-Line 1287 
 namespace RIFF {
+Line 1407 
 namespace RIFF {
              hFileRead = hFileWrite = 0;
              throw RIFF::Exception("Can't open \"" + path + "\"");
          }
+         #elif defined(WIN32)
+         hFileRead = hFileWrite = CreateFile(
+                                      path.c_str(), GENERIC_READ,
+                                      FILE_SHARE_READ | FILE_SHARE_WRITE,
+                                      NULL, OPEN_EXISTING,
+                                      FILE_ATTRIBUTE_NORMAL, NULL
+                                  );
+         if (hFileRead == INVALID_HANDLE_VALUE) {
+             hFileRead = hFileWrite = INVALID_HANDLE_VALUE;
+             throw RIFF::Exception("Can't open \"" + path + "\"");
+         }
          #else
          hFileRead = hFileWrite = fopen(path.c_str(), "rb");
-         if (!hFile) throw RIFF::Exception("Can't open \"" + path + "\"");
+         if (!hFileRead) throw RIFF::Exception("Can't open \"" + path + "\"");
          #endif // POSIX
          Mode = stream_mode_read;
          ulStartPos = RIFF_HEADER_SIZE;
-Line 1328 
 namespace RIFF {
+Line 1459 
 namespace RIFF {
                          hFileRead = hFileWrite = 0;
                          throw Exception("Could not (re)open file \"" + Filename + "\" in read mode");
                      }
+                     #elif defined(WIN32)
+                     if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead);
+                     hFileRead = hFileWrite = CreateFile(
+                                                  Filename.c_str(), GENERIC_READ,
+                                                  FILE_SHARE_READ | FILE_SHARE_WRITE,
+                                                  NULL, OPEN_EXISTING,
+                                                  FILE_ATTRIBUTE_NORMAL, NULL
+                                              );
+                     if (hFileRead == INVALID_HANDLE_VALUE) {
+                         hFileRead = hFileWrite = INVALID_HANDLE_VALUE;
+                         throw Exception("Could not (re)open file \"" + Filename + "\" in read mode");
+                     }
                      #else
                      if (hFileRead) fclose(hFileRead);
-                     hFileRead = hFileWrite = fopen(path.c_str(), "rb");
+                     hFileRead = hFileWrite = fopen(Filename.c_str(), "rb");
                      if (!hFileRead) throw Exception("Could not (re)open file \"" + Filename + "\" in read mode");
                      #endif
                      __resetPos(); // reset read/write position of ALL 'Chunk' objects
-Line 1343 
 namespace RIFF {
+Line 1486 
 namespace RIFF {
                          hFileRead = hFileWrite = open(Filename.c_str(), O_RDONLY | O_NONBLOCK);
                          throw Exception("Could not open file \"" + Filename + "\" in read+write mode");
                      }
+                     #elif defined(WIN32)
+                     if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead);
+                     hFileRead = hFileWrite = CreateFile(
+                                                  Filename.c_str(),
+                                                  GENERIC_READ | GENERIC_WRITE,
+                                                  FILE_SHARE_READ,
+                                                  NULL, OPEN_ALWAYS,
+                                                  FILE_ATTRIBUTE_NORMAL, NULL
+                                              );
+                     if (hFileRead == INVALID_HANDLE_VALUE) {
+                         hFileRead = hFileWrite = CreateFile(
+                                                      Filename.c_str(), GENERIC_READ,
+                                                      FILE_SHARE_READ | FILE_SHARE_WRITE,
+                                                      NULL, OPEN_EXISTING,
+                                                      FILE_ATTRIBUTE_NORMAL, NULL
+                                                  );
+                         throw Exception("Could not (re)open file \"" + Filename + "\" in read+write mode");
+                     }
                      #else
                      if (hFileRead) fclose(hFileRead);
-                     hFileRead = hFileWrite = fopen(path.c_str(), "r+b");
+                     hFileRead = hFileWrite = fopen(Filename.c_str(), "r+b");
                      if (!hFileRead) {
-                         hFileRead = hFileWrite = fopen(path.c_str(), "rb");
+                         hFileRead = hFileWrite = fopen(Filename.c_str(), "rb");
                          throw Exception("Could not open file \"" + Filename + "\" in read+write mode");
                      }
                      #endif
-Line 1357 
 namespace RIFF {
+Line 1518 
 namespace RIFF {
                      #if POSIX
                      if (hFileRead)  close(hFileRead);
                      if (hFileWrite) close(hFileWrite);
+                     #elif defined(WIN32)
+                     if (hFileRead  != INVALID_HANDLE_VALUE) CloseHandle(hFileRead);
+                     if (hFileWrite != INVALID_HANDLE_VALUE) CloseHandle(hFileWrite);
                      #else
                      if (hFileRead)  fclose(hFileRead);
                      if (hFileWrite) fclose(hFileWrite);
-Line 1372 
 namespace RIFF {
+Line 1536 
 namespace RIFF {
          return false;
      }
+     /** @brief Set the byte order to be used when saving.
+      *
+      * Set the byte order to be used in the file. A value of
+      * endian_little will create a RIFF file, endian_big a RIFX file
+      * and endian_native will create a RIFF file on little-endian
+      * machines and RIFX on big-endian machines.
+      *
+      * @param Endian - endianess to use when file is saved.
+      */
+     void File::SetByteOrder(endian_t Endian) {
+         #if WORDS_BIGENDIAN
+         bEndianNative = Endian != endian_little;
+         #else
+         bEndianNative = Endian != endian_big;
+         #endif
+     }
      /** @brief Save changes to same file.
       *
       * Make all changes of all chunks persistent by writing them to the
-Line 1383 
 namespace RIFF {
+Line 1564 
 namespace RIFF {
       *                         chunk or any kind of IO error occured
       */
      void File::Save() {
+         // make sure the RIFF tree is built (from the original file)
+         LoadSubChunksRecursively();
          // reopen file in write mode
          SetMode(stream_mode_read_write);
-Line 1396 
 namespace RIFF {
+Line 1580 
 namespace RIFF {
          // first we sum up all positive chunk size changes (and skip all negative ones)
          unsigned long ulPositiveSizeDiff = 0;
          for (ChunkList::iterator iter = ResizedChunks.begin(), end = ResizedChunks.end(); iter != end; ++iter) {
-             if ((*iter)->GetNewSize() == 0) throw Exception("There is at least one empty chunk (zero size)");
+             if ((*iter)->GetNewSize() == 0) {
+                 throw Exception("There is at least one empty chunk (zero size): " + __resolveChunkPath(*iter));
+             }
              if ((*iter)->GetNewSize() + 1L > (*iter)->GetSize()) {
                  unsigned long ulDiff = (*iter)->GetNewSize() - (*iter)->GetSize() + 1L; // +1 in case we have to add a pad byte
                  ulPositiveSizeDiff += ulDiff;
-Line 1413 
 namespace RIFF {
+Line 1599 
 namespace RIFF {
              // ... and move current data by the same amount towards end of file.
              int8_t* pCopyBuffer = new int8_t[4096];
              const unsigned long ulFileSize = GetSize() + RIFF_HEADER_SIZE;
-             int iBytesMoved = 1;
+             #if defined(WIN32)
+             DWORD iBytesMoved = 1; // we have to pass it via pointer to the Windows API, thus the correct size must be ensured
+             #else
+             int iBytesMoved = 1;
+             #endif
              for (unsigned long ulPos = 0; iBytesMoved > 0; ulPos += iBytesMoved) {
                  const unsigned long ulToMove = ulFileSize - ulPos;
                  iBytesMoved = (ulToMove < 4096) ? ulToMove : 4096;
-Line 1422 
 namespace RIFF {
+Line 1612 
 namespace RIFF {
                  iBytesMoved = read(hFileRead, pCopyBuffer, iBytesMoved);
                  lseek(hFileWrite, ulPos + ulPositiveSizeDiff, SEEK_SET);
                  iBytesMoved = write(hFileWrite, pCopyBuffer, iBytesMoved);
+                 #elif defined(WIN32)
+                 SetFilePointer(hFileRead, ulPos, NULL/*32 bit*/, FILE_BEGIN);
+                 ReadFile(hFileRead, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL);
+                 SetFilePointer(hFileWrite, ulPos + ulPositiveSizeDiff, NULL/*32 bit*/, FILE_BEGIN);
+                 WriteFile(hFileWrite, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL);
                  #else
                  fseek(hFileRead, ulPos, SEEK_SET);
                  iBytesMoved = fread(pCopyBuffer, 1, iBytesMoved, hFileRead);
-Line 1460 
 namespace RIFF {
+Line 1655 
 namespace RIFF {
      void File::Save(const String& path) {
          //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
+         // make sure the RIFF tree is built (from the original file)
+         LoadSubChunksRecursively();
          if (Filename.length() > 0) SetMode(stream_mode_read);
          // open the other (new) file for writing and truncate it to zero size
          #if POSIX
-Line 1468 
 namespace RIFF {
+Line 1666 
 namespace RIFF {
              hFileWrite = hFileRead;
              throw Exception("Could not open file \"" + path + "\" for writing");
          }
+         #elif defined(WIN32)
+         hFileWrite = CreateFile(
+                          path.c_str(), GENERIC_WRITE, FILE_SHARE_READ,
+                          NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL
+                      );
+         if (hFileWrite == INVALID_HANDLE_VALUE) {
+             hFileWrite = hFileRead;
+             throw Exception("Could not open file \"" + path + "\" for writing");
+         }
          #else
          hFileWrite = fopen(path.c_str(), "w+b");
          if (!hFileWrite) {
-Line 1487 
 namespace RIFF {
+Line 1694 
 namespace RIFF {
          // forget all resized chunks
          ResizedChunks.clear();
-         if (Filename.length() > 0) {
+         #if POSIX
-             #if POSIX
+         if (hFileWrite) close(hFileWrite);
-             close(hFileWrite);
+         #elif defined(WIN32)
-             #else
+         if (hFileWrite != INVALID_HANDLE_VALUE) CloseHandle(hFileWrite);
-             fclose(hFileWrite);
+         #else
-             #endif
+         if (hFileWrite) fclose(hFileWrite);
-             hFileWrite = hFileRead;
+         #endif
-         }
+         hFileWrite = hFileRead;
          // associate new file with this File object from now on
          Filename = path;
-Line 1506 
 namespace RIFF {
+Line 1713 
 namespace RIFF {
          #if POSIX
          if (ftruncate(hFileWrite, ulNewSize) < 0)
              throw Exception("Could not resize file \"" + Filename + "\"");
+         #elif defined(WIN32)
+         if (
+             SetFilePointer(hFileWrite, ulNewSize, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER ||
+             !SetEndOfFile(hFileWrite)
+         ) throw Exception("Could not resize file \"" + Filename + "\"");
          #else
-         # error Sorry, this version of libgig only supports POSIX systems yet.
+         # error Sorry, this version of libgig only supports POSIX and Windows systems yet.
          # error Reason: portable implementation of RIFF::File::ResizeFile() is missing (yet)!
          #endif
      }
-Line 1518 
 namespace RIFF {
+Line 1730 
 namespace RIFF {
         #endif // DEBUG
          #if POSIX
          if (hFileRead) close(hFileRead);
+         #elif defined(WIN32)
+         if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead);
          #else
          if (hFileRead) fclose(hFileRead);
          #endif // POSIX
-Line 1527 
 namespace RIFF {
+Line 1741 
 namespace RIFF {
          ResizedChunks.push_back(pResizedChunk);
      }
+     void File::UnlogResized(Chunk* pResizedChunk) {
+         ResizedChunks.remove(pResizedChunk);
+     }
      unsigned long File::GetFileSize() {
          return __GetFileSize(hFileRead);
      }
-Line 1538 
 namespace RIFF {
+Line 1756 
 namespace RIFF {
          long size = filestat.st_size;
          return size;
      }
+     #elif defined(WIN32)
+     unsigned long File::__GetFileSize(HANDLE hFile) {
+         DWORD dwSize = ::GetFileSize(hFile, NULL /*32bit*/);
+         if (dwSize == INVALID_FILE_SIZE)
+             throw Exception("Windows FS error: could not determine file size");
+         return dwSize;
+     }
      #else // standard C functions
      unsigned long File::__GetFileSize(FILE* hFile) {
          long curpos = ftell(hFile);

 Legend:



Removed from v.808
 


changed lines


 
Added in v.1301
 Legend:



Removed from v.808
 


changed lines


 
Added in v.1301
-Removed from v.808
+Added in v.1301

	ViewVC Help
Powered by ViewVC