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// Compress/CopyCoder.cpp
#include "StdAfx.h"
#include "../../../C/Alloc.h"
#include "../Common/StreamUtils.h"
#include "CopyCoder.h"
namespace NCompress {
static const UInt32 kBufferSize = 1 << 17;
CCopyCoder::~CCopyCoder()
{
::MidFree(_buffer);
}
STDMETHODIMP CCopyCoder::Code(ISequentialInStream *inStream,
ISequentialOutStream *outStream,
const UInt64 * /* inSize */, const UInt64 *outSize,
ICompressProgressInfo *progress)
{
if (!_buffer)
{
_buffer = (Byte *)::MidAlloc(kBufferSize);
if (!_buffer)
return E_OUTOFMEMORY;
}
TotalSize = 0;
for (;;)
{
UInt32 size = kBufferSize;
if (outSize && size > *outSize - TotalSize)
size = (UInt32)(*outSize - TotalSize);
RINOK(inStream->Read(_buffer, size, &size));
if (size == 0)
break;
if (outStream)
{
RINOK(WriteStream(outStream, _buffer, size));
}
TotalSize += size;
if (progress)
{
RINOK(progress->SetRatioInfo(&TotalSize, &TotalSize));
}
}
return S_OK;
}
STDMETHODIMP CCopyCoder::GetInStreamProcessedSize(UInt64 *value)
{
*value = TotalSize;
return S_OK;
}
HRESULT CopyStream(ISequentialInStream *inStream, ISequentialOutStream *outStream, ICompressProgressInfo *progress)
{
CMyComPtr<ICompressCoder> copyCoder = new CCopyCoder;
return copyCoder->Code(inStream, outStream, NULL, NULL, progress);
}
HRESULT CopyStream_ExactSize(ISequentialInStream *inStream, ISequentialOutStream *outStream, UInt64 size, ICompressProgressInfo *progress)
{
NCompress::CCopyCoder *copyCoderSpec = new NCompress::CCopyCoder;
CMyComPtr<ICompressCoder> copyCoder = copyCoderSpec;
RINOK(copyCoder->Code(inStream, outStream, NULL, &size, progress));
return copyCoderSpec->TotalSize == size ? S_OK : E_FAIL;
}
}
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