release/src-rt/linux/linux-2.6/scripts/squashfs/lzma/C/7zip/Common/StreamUtils.cpp

   1 // StreamUtils.cpp
   2
   3 #include "StdAfx.h"
   4
   5 #include "../../Common/MyCom.h"
   6 #include "StreamUtils.h"
   7
   8 HRESULT ReadStream(ISequentialInStream *stream, void *data, UInt32 size, UInt32 *processedSize)
   9 {
  10   if (processedSize != 0)
  11     *processedSize = 0;
  12   while(size != 0)
  13   {
  14     UInt32 processedSizeLoc;
  15     HRESULT res = stream->Read(data, size, &processedSizeLoc);
  16     if (processedSize != 0)
  17       *processedSize += processedSizeLoc;
  18     data = (Byte *)((Byte *)data + processedSizeLoc);
  19     size -= processedSizeLoc;
  20     RINOK(res);
  21     if (processedSizeLoc == 0)
  22       return S_OK;
  23   }
  24   return S_OK;
  25 }
  26
  27 HRESULT WriteStream(ISequentialOutStream *stream, const void *data, UInt32 size, UInt32 *processedSize)
  28 {
  29   if (processedSize != 0)
  30     *processedSize = 0;
  31   while(size != 0)
  32   {
  33     UInt32 processedSizeLoc;
  34     HRESULT res = stream->Write(data, size, &processedSizeLoc);
  35     if (processedSize != 0)
  36       *processedSize += processedSizeLoc;
  37     data = (const void *)((const Byte *)data + processedSizeLoc);
  38     size -= processedSizeLoc;
  39     RINOK(res);
  40     if (processedSizeLoc == 0)
  41       break;
  42   }
  43   return S_OK;
  44 }