Mercurial > vba-clojure
diff src/win32/7zip/7z/CPP/7zip/Archive/Rar/RarVolumeInStream.cpp @ 1:f9f4f1b99eed
importing src directory
author | Robert McIntyre <rlm@mit.edu> |
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date | Sat, 03 Mar 2012 10:31:27 -0600 |
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1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/src/win32/7zip/7z/CPP/7zip/Archive/Rar/RarVolumeInStream.cpp Sat Mar 03 10:31:27 2012 -0600 1.3 @@ -0,0 +1,84 @@ 1.4 +// RarVolumeInStream.cpp 1.5 + 1.6 +#include "StdAfx.h" 1.7 + 1.8 +#include "RarVolumeInStream.h" 1.9 + 1.10 +#include "Windows/Defs.h" 1.11 +#include "Common/Defs.h" 1.12 + 1.13 +extern "C" 1.14 +{ 1.15 + #include "../../../../C/7zCrc.h" 1.16 +} 1.17 + 1.18 +namespace NArchive { 1.19 +namespace NRar { 1.20 + 1.21 +void CFolderInStream::Init( 1.22 + CObjectVector<CInArchive> *archives, 1.23 + const CObjectVector<CItemEx> *items, 1.24 + const CRefItem &refItem) 1.25 +{ 1.26 + _archives = archives; 1.27 + _items = items; 1.28 + _refItem = refItem; 1.29 + _curIndex = 0; 1.30 + CRCs.Clear(); 1.31 + _fileIsOpen = false; 1.32 +} 1.33 + 1.34 +HRESULT CFolderInStream::OpenStream() 1.35 +{ 1.36 + while (_curIndex < _refItem.NumItems) 1.37 + { 1.38 + const CItemEx &item = (*_items)[_refItem.ItemIndex + _curIndex]; 1.39 + _stream.Attach((*_archives)[_refItem.VolumeIndex + _curIndex]. 1.40 + CreateLimitedStream(item.GetDataPosition(), item.PackSize)); 1.41 + _curIndex++; 1.42 + _fileIsOpen = true; 1.43 + _crc = CRC_INIT_VAL; 1.44 + return S_OK; 1.45 + } 1.46 + return S_OK; 1.47 +} 1.48 + 1.49 +HRESULT CFolderInStream::CloseStream() 1.50 +{ 1.51 + CRCs.Add(CRC_GET_DIGEST(_crc)); 1.52 + _stream.Release(); 1.53 + _fileIsOpen = false; 1.54 + return S_OK; 1.55 +} 1.56 + 1.57 +STDMETHODIMP CFolderInStream::Read(void *data, UInt32 size, UInt32 *processedSize) 1.58 +{ 1.59 + UInt32 realProcessedSize = 0; 1.60 + while ((_curIndex < _refItem.NumItems || _fileIsOpen) && size > 0) 1.61 + { 1.62 + if (_fileIsOpen) 1.63 + { 1.64 + UInt32 localProcessedSize; 1.65 + RINOK(_stream->Read( 1.66 + ((Byte *)data) + realProcessedSize, size, &localProcessedSize)); 1.67 + _crc = CrcUpdate(_crc, ((Byte *)data) + realProcessedSize, localProcessedSize); 1.68 + if (localProcessedSize == 0) 1.69 + { 1.70 + RINOK(CloseStream()); 1.71 + continue; 1.72 + } 1.73 + realProcessedSize += localProcessedSize; 1.74 + size -= localProcessedSize; 1.75 + break; 1.76 + } 1.77 + else 1.78 + { 1.79 + RINOK(OpenStream()); 1.80 + } 1.81 + } 1.82 + if (processedSize != 0) 1.83 + *processedSize = realProcessedSize; 1.84 + return S_OK; 1.85 +} 1.86 + 1.87 +}}