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// HandlerCont.cpp
#include "StdAfx.h"
#include "../../Common/ComTry.h"
#include "../Common/LimitedStreams.h"
#include "../Common/ProgressUtils.h"
#include "../Common/StreamUtils.h"
#include "../Compress/CopyCoder.h"
#include "HandlerCont.h"
namespace NArchive {
STDMETHODIMP CHandlerCont::Extract(const UInt32 *indices, UInt32 numItems,
Int32 testMode, IArchiveExtractCallback *extractCallback)
{
COM_TRY_BEGIN
bool allFilesMode = (numItems == (UInt32)(Int32)-1);
if (allFilesMode)
{
RINOK(GetNumberOfItems(&numItems));
}
if (numItems == 0)
return S_OK;
UInt64 totalSize = 0;
UInt32 i;
for (i = 0; i < numItems; i++)
totalSize += GetItemSize(allFilesMode ? i : indices[i]);
extractCallback->SetTotal(totalSize);
totalSize = 0;
NCompress::CCopyCoder *copyCoderSpec = new NCompress::CCopyCoder();
CMyComPtr<ICompressCoder> copyCoder = copyCoderSpec;
CLocalProgress *lps = new CLocalProgress;
CMyComPtr<ICompressProgressInfo> progress = lps;
lps->Init(extractCallback, false);
CLimitedSequentialInStream *streamSpec = new CLimitedSequentialInStream;
CMyComPtr<ISequentialInStream> inStream(streamSpec);
streamSpec->SetStream(_stream);
for (i = 0; i < numItems; i++)
{
lps->InSize = totalSize;
lps->OutSize = totalSize;
RINOK(lps->SetCur());
CMyComPtr<ISequentialOutStream> outStream;
Int32 askMode = testMode ?
NExtract::NAskMode::kTest :
NExtract::NAskMode::kExtract;
Int32 index = allFilesMode ? i : indices[i];
RINOK(extractCallback->GetStream(index, &outStream, askMode));
UInt64 size = GetItemSize(index);
totalSize += size;
if (!testMode && !outStream)
continue;
RINOK(extractCallback->PrepareOperation(askMode));
RINOK(_stream->Seek(GetItemPos(index), STREAM_SEEK_SET, NULL));
streamSpec->Init(size);
RINOK(copyCoder->Code(inStream, outStream, NULL, NULL, progress));
outStream.Release();
int opRes = NExtract::NOperationResult::kDataError;
if (copyCoderSpec->TotalSize == size)
opRes = NExtract::NOperationResult::kOK;
else if (copyCoderSpec->TotalSize < size)
opRes = NExtract::NOperationResult::kUnexpectedEnd;
RINOK(extractCallback->SetOperationResult(opRes));
}
return S_OK;
COM_TRY_END
}
STDMETHODIMP CHandlerCont::GetStream(UInt32 index, ISequentialInStream **stream)
{
COM_TRY_BEGIN
// const CPartition &item = _items[index];
return CreateLimitedInStream(_stream, GetItemPos(index), GetItemSize(index), stream);
COM_TRY_END
}
STDMETHODIMP CHandlerImg::Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition)
{
switch (seekOrigin)
{
case STREAM_SEEK_SET: break;
case STREAM_SEEK_CUR: offset += _virtPos; break;
case STREAM_SEEK_END: offset += _size; break;
default: return STG_E_INVALIDFUNCTION;
}
if (offset < 0)
return HRESULT_WIN32_ERROR_NEGATIVE_SEEK;
_virtPos = offset;
if (newPosition)
*newPosition = offset;
return S_OK;
}
static const Byte k_GDP_Signature[] = { 'E', 'F', 'I', ' ', 'P', 'A', 'R', 'T' };
static const char *GetImgExt(ISequentialInStream *stream)
{
const size_t kHeaderSize = 1 << 10;
Byte buf[kHeaderSize];
if (ReadStream_FAIL(stream, buf, kHeaderSize) == S_OK)
{
if (buf[0x1FE] == 0x55 && buf[0x1FF] == 0xAA)
{
if (memcmp(buf + 512, k_GDP_Signature, sizeof(k_GDP_Signature)) == 0)
return "gpt";
return "mbr";
}
}
return NULL;
}
void CHandlerImg::CloseAtError()
{
Stream.Release();
}
STDMETHODIMP CHandlerImg::Open(IInStream *stream,
const UInt64 * /* maxCheckStartPosition */,
IArchiveOpenCallback * openCallback)
{
COM_TRY_BEGIN
{
Close();
HRESULT res;
try
{
res = Open2(stream, openCallback);
if (res == S_OK)
{
CMyComPtr<ISequentialInStream> inStream;
HRESULT res2 = GetStream(0, &inStream);
if (res2 == S_OK && inStream)
_imgExt = GetImgExt(inStream);
return S_OK;
}
}
catch(...)
{
CloseAtError();
throw;
}
CloseAtError();
return res;
}
COM_TRY_END
}
STDMETHODIMP CHandlerImg::GetNumberOfItems(UInt32 *numItems)
{
*numItems = 1;
return S_OK;
}
STDMETHODIMP CHandlerImg::Extract(const UInt32 *indices, UInt32 numItems,
Int32 testMode, IArchiveExtractCallback *extractCallback)
{
COM_TRY_BEGIN
if (numItems == 0)
return S_OK;
if (numItems != (UInt32)(Int32)-1 && (numItems != 1 || indices[0] != 0))
return E_INVALIDARG;
RINOK(extractCallback->SetTotal(_size));
CMyComPtr<ISequentialOutStream> outStream;
Int32 askMode = testMode ?
NExtract::NAskMode::kTest :
NExtract::NAskMode::kExtract;
RINOK(extractCallback->GetStream(0, &outStream, askMode));
if (!testMode && !outStream)
return S_OK;
RINOK(extractCallback->PrepareOperation(askMode));
CLocalProgress *lps = new CLocalProgress;
CMyComPtr<ICompressProgressInfo> progress = lps;
lps->Init(extractCallback, false);
int opRes = NExtract::NOperationResult::kDataError;
CMyComPtr<ISequentialInStream> inStream;
HRESULT hres = GetStream(0, &inStream);
if (hres == S_FALSE)
hres = E_NOTIMPL;
if (hres == S_OK && inStream)
{
NCompress::CCopyCoder *copyCoderSpec = new NCompress::CCopyCoder();
CMyComPtr<ICompressCoder> copyCoder = copyCoderSpec;
hres = copyCoder->Code(inStream, outStream, NULL, &_size, progress);
if (hres == S_OK)
{
if (copyCoderSpec->TotalSize == _size)
opRes = NExtract::NOperationResult::kOK;
else if (copyCoderSpec->TotalSize < _size)
opRes = NExtract::NOperationResult::kUnexpectedEnd;
}
}
inStream.Release();
outStream.Release();
if (hres != S_OK)
{
if (hres == S_FALSE)
opRes = NExtract::NOperationResult::kDataError;
else if (hres == E_NOTIMPL)
opRes = NExtract::NOperationResult::kUnsupportedMethod;
else
return hres;
}
return extractCallback->SetOperationResult(opRes);
COM_TRY_END
}
}
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