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// Tar/Handler.cpp
#include "StdAfx.h"
#include "TarHandler.h"
#include "TarIn.h"
#include "Common/Defs.h"
#include "Common/StringConvert.h"
#include "Common/NewHandler.h"
#include "Common/ComTry.h"
#include "Windows/Time.h"
#include "Windows/PropVariant.h"
#include "../../Common/ProgressUtils.h"
#include "../../Common/LimitedStreams.h"
#include "../Common/DummyOutStream.h"
#include "../../Compress/Copy/CopyCoder.h"
#include "../Common/ItemNameUtils.h"
using namespace NWindows;
namespace NArchive {
namespace NTar {
STATPROPSTG kProps[] =
{
{ NULL, kpidPath, VT_BSTR},
{ NULL, kpidIsDir, VT_BOOL},
{ NULL, kpidSize, VT_UI8},
{ NULL, kpidPackSize, VT_UI8},
{ NULL, kpidMTime, VT_FILETIME},
{ NULL, kpidUser, VT_BSTR},
{ NULL, kpidGroup, VT_BSTR}
};
IMP_IInArchive_Props
IMP_IInArchive_ArcProps_NO
HRESULT CHandler::Open2(IInStream *stream, IArchiveOpenCallback *callback)
{
UInt64 endPos = 0;
if (callback != NULL)
{
RINOK(stream->Seek(0, STREAM_SEEK_END, &endPos));
RINOK(stream->Seek(0, STREAM_SEEK_SET, NULL));
}
UInt64 pos = 0;
for (;;)
{
CItemEx item;
bool filled;
item.HeaderPosition = pos;
RINOK(ReadItem(stream, filled, item));
if (!filled)
break;
_items.Add(item);
RINOK(stream->Seek(item.GetPackSize(), STREAM_SEEK_CUR, &pos));
if (pos >= endPos)
return S_FALSE;
if (callback != NULL)
{
if (_items.Size() == 1)
{
RINOK(callback->SetTotal(NULL, &endPos));
}
if (_items.Size() % 100 == 0)
{
UInt64 numFiles = _items.Size();
RINOK(callback->SetCompleted(&numFiles, &pos));
}
}
}
if (_items.Size() == 0)
{
CMyComPtr<IArchiveOpenVolumeCallback> openVolumeCallback;
if (!callback)
return S_FALSE;
callback->QueryInterface(IID_IArchiveOpenVolumeCallback, (void **)&openVolumeCallback);
if (!openVolumeCallback)
return S_FALSE;
NCOM::CPropVariant prop;
if (openVolumeCallback->GetProperty(kpidName, &prop) != S_OK)
return S_FALSE;
if (prop.vt != VT_BSTR)
return S_FALSE;
UString baseName = prop.bstrVal;
baseName = baseName.Right(4);
if (baseName.CompareNoCase(L".tar") != 0)
return S_FALSE;
}
return S_OK;
}
STDMETHODIMP CHandler::Open(IInStream *stream,
const UInt64 * /* maxCheckStartPosition */,
IArchiveOpenCallback *openArchiveCallback)
{
COM_TRY_BEGIN
{
Close();
RINOK(Open2(stream, openArchiveCallback));
_inStream = stream;
}
return S_OK;
COM_TRY_END
}
STDMETHODIMP CHandler::Close()
{
_items.Clear();
_inStream.Release();
return S_OK;
}
STDMETHODIMP CHandler::GetNumberOfItems(UInt32 *numItems)
{
*numItems = _items.Size();
return S_OK;
}
STDMETHODIMP CHandler::GetProperty(UInt32 index, PROPID propID, PROPVARIANT *value)
{
COM_TRY_BEGIN
NWindows::NCOM::CPropVariant prop;
const CItemEx &item = _items[index];
switch(propID)
{
case kpidPath: prop = NItemName::GetOSName2(MultiByteToUnicodeString(item.Name, CP_OEMCP)); break;
case kpidIsDir: prop = item.IsDir(); break;
case kpidSize: prop = item.Size; break;
case kpidPackSize: prop = item.GetPackSize(); break;
case kpidMTime:
if (item.MTime != 0)
{
FILETIME ft;
NTime::UnixTimeToFileTime(item.MTime, ft);
prop = ft;
}
break;
case kpidUser: prop = MultiByteToUnicodeString(item.UserName, CP_OEMCP); break;
case kpidGroup: prop = MultiByteToUnicodeString(item.GroupName, CP_OEMCP); break;
}
prop.Detach(value);
return S_OK;
COM_TRY_END
}
STDMETHODIMP CHandler::Extract(const UInt32* indices, UInt32 numItems,
Int32 _aTestMode, IArchiveExtractCallback *extractCallback)
{
COM_TRY_BEGIN
bool testMode = (_aTestMode != 0);
bool allFilesMode = (numItems == UInt32(-1));
if (allFilesMode)
numItems = _items.Size();
if (numItems == 0)
return S_OK;
UInt64 totalSize = 0;
UInt32 i;
for (i = 0; i < numItems; i++)
totalSize += _items[allFilesMode ? i : indices[i]].Size;
extractCallback->SetTotal(totalSize);
UInt64 totalPackSize, curPackSize, curSize;
totalSize = totalPackSize = 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(_inStream);
CDummyOutStream *outStreamSpec = new CDummyOutStream;
CMyComPtr<ISequentialOutStream> outStream(outStreamSpec);
for (i = 0; i < numItems; i++, totalSize += curSize, totalPackSize += curPackSize)
{
lps->InSize = totalPackSize;
lps->OutSize = totalSize;
RINOK(lps->SetCur());
CMyComPtr<ISequentialOutStream> realOutStream;
Int32 askMode = testMode ?
NArchive::NExtract::NAskMode::kTest :
NArchive::NExtract::NAskMode::kExtract;
Int32 index = allFilesMode ? i : indices[i];
const CItemEx &item = _items[index];
RINOK(extractCallback->GetStream(index, &realOutStream, askMode));
curSize = item.Size;
curPackSize = item.GetPackSize();
if (item.IsDir())
{
RINOK(extractCallback->PrepareOperation(askMode));
RINOK(extractCallback->SetOperationResult(NArchive::NExtract::NOperationResult::kOK));
continue;
}
if (!testMode && (!realOutStream))
continue;
RINOK(extractCallback->PrepareOperation(askMode));
outStreamSpec->SetStream(realOutStream);
realOutStream.Release();
outStreamSpec->Init();
RINOK(_inStream->Seek(item.GetDataPosition(), STREAM_SEEK_SET, NULL));
streamSpec->Init(item.Size);
RINOK(copyCoder->Code(inStream, outStream, NULL, NULL, progress));
outStreamSpec->ReleaseStream();
RINOK(extractCallback->SetOperationResult(copyCoderSpec->TotalSize == item.Size ?
NArchive::NExtract::NOperationResult::kOK:
NArchive::NExtract::NOperationResult::kDataError));
}
return S_OK;
COM_TRY_END
}
}}
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