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// CWrappers.h
#include "StdAfx.h"
#include "../../../C/Alloc.h"
#include "CWrappers.h"
#include "StreamUtils.h"
SRes HRESULT_To_SRes(HRESULT res, SRes defaultRes) throw()
{
switch (res)
{
case S_OK: return SZ_OK;
case E_OUTOFMEMORY: return SZ_ERROR_MEM;
case E_INVALIDARG: return SZ_ERROR_PARAM;
case E_ABORT: return SZ_ERROR_PROGRESS;
case S_FALSE: return SZ_ERROR_DATA;
case E_NOTIMPL: return SZ_ERROR_UNSUPPORTED;
}
return defaultRes;
}
HRESULT SResToHRESULT(SRes res) throw()
{
switch (res)
{
case SZ_OK: return S_OK;
case SZ_ERROR_DATA:
case SZ_ERROR_CRC:
case SZ_ERROR_INPUT_EOF:
return S_FALSE;
case SZ_ERROR_MEM: return E_OUTOFMEMORY;
case SZ_ERROR_PARAM: return E_INVALIDARG;
case SZ_ERROR_PROGRESS: return E_ABORT;
case SZ_ERROR_UNSUPPORTED: return E_NOTIMPL;
// case SZ_ERROR_OUTPUT_EOF:
// case SZ_ERROR_READ:
// case SZ_ERROR_WRITE:
// case SZ_ERROR_THREAD:
// case SZ_ERROR_ARCHIVE:
// case SZ_ERROR_NO_ARCHIVE:
// return E_FAIL;
}
if (res < 0)
return res;
return E_FAIL;
}
#define PROGRESS_UNKNOWN_VALUE ((UInt64)(Int64)-1)
#define CONVERT_PR_VAL(x) (x == PROGRESS_UNKNOWN_VALUE ? NULL : &x)
static SRes CompressProgress(const ICompressProgress *pp, UInt64 inSize, UInt64 outSize) throw()
{
CCompressProgressWrap *p = CONTAINER_FROM_VTBL(pp, CCompressProgressWrap, vt);
p->Res = p->Progress->SetRatioInfo(CONVERT_PR_VAL(inSize), CONVERT_PR_VAL(outSize));
return HRESULT_To_SRes(p->Res, SZ_ERROR_PROGRESS);
}
void CCompressProgressWrap::Init(ICompressProgressInfo *progress) throw()
{
vt.Progress = CompressProgress;
Progress = progress;
Res = SZ_OK;
}
static const UInt32 kStreamStepSize = (UInt32)1 << 31;
static SRes MyRead(const ISeqInStream *pp, void *data, size_t *size) throw()
{
CSeqInStreamWrap *p = CONTAINER_FROM_VTBL(pp, CSeqInStreamWrap, vt);
UInt32 curSize = ((*size < kStreamStepSize) ? (UInt32)*size : kStreamStepSize);
p->Res = (p->Stream->Read(data, curSize, &curSize));
*size = curSize;
p->Processed += curSize;
if (p->Res == S_OK)
return SZ_OK;
return HRESULT_To_SRes(p->Res, SZ_ERROR_READ);
}
static size_t MyWrite(const ISeqOutStream *pp, const void *data, size_t size) throw()
{
CSeqOutStreamWrap *p = CONTAINER_FROM_VTBL(pp, CSeqOutStreamWrap, vt);
if (p->Stream)
{
p->Res = WriteStream(p->Stream, data, size);
if (p->Res != 0)
return 0;
}
else
p->Res = S_OK;
p->Processed += size;
return size;
}
void CSeqInStreamWrap::Init(ISequentialInStream *stream) throw()
{
vt.Read = MyRead;
Stream = stream;
Processed = 0;
Res = S_OK;
}
void CSeqOutStreamWrap::Init(ISequentialOutStream *stream) throw()
{
vt.Write = MyWrite;
Stream = stream;
Res = SZ_OK;
Processed = 0;
}
static SRes InStreamWrap_Read(const ISeekInStream *pp, void *data, size_t *size) throw()
{
CSeekInStreamWrap *p = CONTAINER_FROM_VTBL(pp, CSeekInStreamWrap, vt);
UInt32 curSize = ((*size < kStreamStepSize) ? (UInt32)*size : kStreamStepSize);
p->Res = p->Stream->Read(data, curSize, &curSize);
*size = curSize;
return (p->Res == S_OK) ? SZ_OK : SZ_ERROR_READ;
}
static SRes InStreamWrap_Seek(const ISeekInStream *pp, Int64 *offset, ESzSeek origin) throw()
{
CSeekInStreamWrap *p = CONTAINER_FROM_VTBL(pp, CSeekInStreamWrap, vt);
UInt32 moveMethod;
switch (origin)
{
case SZ_SEEK_SET: moveMethod = STREAM_SEEK_SET; break;
case SZ_SEEK_CUR: moveMethod = STREAM_SEEK_CUR; break;
case SZ_SEEK_END: moveMethod = STREAM_SEEK_END; break;
default: return SZ_ERROR_PARAM;
}
UInt64 newPosition;
p->Res = p->Stream->Seek(*offset, moveMethod, &newPosition);
*offset = (Int64)newPosition;
return (p->Res == S_OK) ? SZ_OK : SZ_ERROR_READ;
}
void CSeekInStreamWrap::Init(IInStream *stream) throw()
{
Stream = stream;
vt.Read = InStreamWrap_Read;
vt.Seek = InStreamWrap_Seek;
Res = S_OK;
}
/* ---------- CByteInBufWrap ---------- */
void CByteInBufWrap::Free() throw()
{
::MidFree(Buf);
Buf = 0;
}
bool CByteInBufWrap::Alloc(UInt32 size) throw()
{
if (Buf == 0 || size != Size)
{
Free();
Lim = Cur = Buf = (Byte *)::MidAlloc((size_t)size);
Size = size;
}
return (Buf != 0);
}
Byte CByteInBufWrap::ReadByteFromNewBlock() throw()
{
if (Res == S_OK)
{
UInt32 avail;
Processed += (Cur - Buf);
Res = Stream->Read(Buf, Size, &avail);
Cur = Buf;
Lim = Buf + avail;
if (avail != 0)
return *Cur++;
}
Extra = true;
return 0;
}
static Byte Wrap_ReadByte(const IByteIn *pp) throw()
{
CByteInBufWrap *p = CONTAINER_FROM_VTBL_CLS(pp, CByteInBufWrap, vt);
if (p->Cur != p->Lim)
return *p->Cur++;
return p->ReadByteFromNewBlock();
}
CByteInBufWrap::CByteInBufWrap(): Buf(0)
{
vt.Read = Wrap_ReadByte;
}
/* ---------- CByteOutBufWrap ---------- */
void CByteOutBufWrap::Free() throw()
{
::MidFree(Buf);
Buf = 0;
}
bool CByteOutBufWrap::Alloc(size_t size) throw()
{
if (Buf == 0 || size != Size)
{
Free();
Buf = (Byte *)::MidAlloc(size);
Size = size;
}
return (Buf != 0);
}
HRESULT CByteOutBufWrap::Flush() throw()
{
if (Res == S_OK)
{
size_t size = (Cur - Buf);
Res = WriteStream(Stream, Buf, size);
if (Res == S_OK)
Processed += size;
Cur = Buf;
}
return Res;
}
static void Wrap_WriteByte(const IByteOut *pp, Byte b) throw()
{
CByteOutBufWrap *p = CONTAINER_FROM_VTBL_CLS(pp, CByteOutBufWrap, vt);
Byte *dest = p->Cur;
*dest = b;
p->Cur = ++dest;
if (dest == p->Lim)
p->Flush();
}
CByteOutBufWrap::CByteOutBufWrap() throw(): Buf(0)
{
vt.Write = Wrap_WriteByte;
}
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