tools/dtdesc/c_iff/skipchunkdata.c

   1 /*
   2  *  c_iff - a portable IFF-parser
   3  *
   4  *  Copyright (C) 2000, 2001 Joerg Dietrich
   5  *
   6  *  This is the AROS-version of c_iff.
   7  *  It is distributed under the AROS Public License.
   8  *  But I reserve the right to distribute
   9  *  my own version under other licenses.
  10  */
  11
  12 /*
  13  *  skipchunkdata.c - skip the data of the actual chunk
  14  */
  15
  16 #include "c_iff.h"
  17
  18 /****** c_iff/SkipChunkData *************************************************
  19 *
  20 *   NAME
  21 *       SkipChunkData -- Skip the entire current chunk
  22 *
  23 *   SYNOPSIS
  24 *       Success = SkipChunkData( TheHandle )
  25 *
  26 *       int SkipChunkData( struct IFFHandle * )
  27 *
  28 *   FUNCTION
  29 *       Skips the entire current chunk.
  30 *       You can continue to ReadChunkHeader() the next chunk.
  31 *
  32 *   INPUTS
  33 *       TheHandle   - IFFHandle to skip
  34 *
  35 *   RESULT
  36 *       Success     - TRUE when successfully skiped to the end of the chunk
  37 *                     otherwise FALSE
  38 *
  39 *   EXAMPLE
  40 *
  41 *   NOTES
  42 *       To skip a chunk you have to start this chunk with
  43 *       ReadChunkHeader() .
  44 *
  45 *   BUGS
  46 *
  47 *   SEE ALSO
  48 *       ReadChunkHeader() ReadChunkData()
  49 *
  50 *****************************************************************************
  51 *
  52 *       Private notes:
  53 */
  54
  55 int SkipChunkData(struct IFFHandle *TheHandle)
  56 {
  57  if(!TheHandle)
  58  {
  59   return(FALSE);
  60  }
  61
  62  if(!TheHandle->BytesLeftInChunk)
  63  {
  64   return(TRUE);
  65  }
  66
  67  if(fseek(TheHandle->TheFile, TheHandle->BytesLeftInChunk, SEEK_CUR))
  68  {
  69   return(FALSE);
  70  }
  71
  72  TheHandle->ChunkID=INVALID_ID;
  73  TheHandle->BytesLeftInChunk=0;
  74
  75  return(TRUE);
  76 }
  77
  78