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| 1 // 7zFolderOutStream.cpp | |
| 2 | |
| 3 #include "StdAfx.h" | |
| 4 | |
| 5 #include "7zFolderOutStream.h" | |
| 6 | |
| 7 namespace NArchive { | |
| 8 namespace N7z { | |
| 9 | |
| 10 CFolderOutStream::CFolderOutStream() | |
| 11 { | |
| 12 _outStreamWithHashSpec = new COutStreamWithCRC; | |
| 13 _outStreamWithHash = _outStreamWithHashSpec; | |
| 14 } | |
| 15 | |
| 16 HRESULT CFolderOutStream::Init( | |
| 17 const CArchiveDatabaseEx *archiveDatabase, | |
| 18 UInt32 ref2Offset, | |
| 19 UInt32 startIndex, | |
| 20 const CBoolVector *extractStatuses, | |
| 21 IArchiveExtractCallback *extractCallback, | |
| 22 bool testMode, | |
| 23 bool checkCrc) | |
| 24 { | |
| 25 _archiveDatabase = archiveDatabase; | |
| 26 _ref2Offset = ref2Offset; | |
| 27 _startIndex = startIndex; | |
| 28 | |
| 29 _extractStatuses = extractStatuses; | |
| 30 _extractCallback = extractCallback; | |
| 31 _testMode = testMode; | |
| 32 | |
| 33 _checkCrc = checkCrc; | |
| 34 | |
| 35 _currentIndex = 0; | |
| 36 _fileIsOpen = false; | |
| 37 return WriteEmptyFiles(); | |
| 38 } | |
| 39 | |
| 40 HRESULT CFolderOutStream::OpenFile() | |
| 41 { | |
| 42 Int32 askMode; | |
| 43 if((*_extractStatuses)[_currentIndex]) | |
| 44 askMode = _testMode ? | |
| 45 NArchive::NExtract::NAskMode::kTest : | |
| 46 NArchive::NExtract::NAskMode::kExtract; | |
| 47 else | |
| 48 askMode = NArchive::NExtract::NAskMode::kSkip; | |
| 49 CMyComPtr<ISequentialOutStream> realOutStream; | |
| 50 | |
| 51 UInt32 index = _startIndex + _currentIndex; | |
| 52 RINOK(_extractCallback->GetStream(_ref2Offset + index, &realOutStream, askMode
)); | |
| 53 | |
| 54 _outStreamWithHashSpec->SetStream(realOutStream); | |
| 55 _outStreamWithHashSpec->Init(_checkCrc); | |
| 56 if (askMode == NArchive::NExtract::NAskMode::kExtract && | |
| 57 (!realOutStream)) | |
| 58 { | |
| 59 const CFileItem &fi = _archiveDatabase->Files[index]; | |
| 60 if (!_archiveDatabase->IsItemAnti(index) && !fi.IsDir) | |
| 61 askMode = NArchive::NExtract::NAskMode::kSkip; | |
| 62 } | |
| 63 return _extractCallback->PrepareOperation(askMode); | |
| 64 } | |
| 65 | |
| 66 HRESULT CFolderOutStream::WriteEmptyFiles() | |
| 67 { | |
| 68 for(;_currentIndex < _extractStatuses->Size(); _currentIndex++) | |
| 69 { | |
| 70 UInt32 index = _startIndex + _currentIndex; | |
| 71 const CFileItem &fi = _archiveDatabase->Files[index]; | |
| 72 if (!_archiveDatabase->IsItemAnti(index) && !fi.IsDir && fi.Size != 0) | |
| 73 return S_OK; | |
| 74 RINOK(OpenFile()); | |
| 75 RINOK(_extractCallback->SetOperationResult(NArchive::NExtract::NOperationRes
ult::kOK)); | |
| 76 _outStreamWithHashSpec->ReleaseStream(); | |
| 77 } | |
| 78 return S_OK; | |
| 79 } | |
| 80 | |
| 81 STDMETHODIMP CFolderOutStream::Write(const void *data, | |
| 82 UInt32 size, UInt32 *processedSize) | |
| 83 { | |
| 84 UInt32 realProcessedSize = 0; | |
| 85 while(_currentIndex < _extractStatuses->Size()) | |
| 86 { | |
| 87 if (_fileIsOpen) | |
| 88 { | |
| 89 UInt32 index = _startIndex + _currentIndex; | |
| 90 const CFileItem &fi = _archiveDatabase->Files[index]; | |
| 91 UInt64 fileSize = fi.Size; | |
| 92 | |
| 93 UInt32 numBytesToWrite = (UInt32)MyMin(fileSize - _filePos, | |
| 94 UInt64(size - realProcessedSize)); | |
| 95 | |
| 96 UInt32 processedSizeLocal; | |
| 97 RINOK(_outStreamWithHash->Write((const Byte *)data + realProcessedSize, | |
| 98 numBytesToWrite, &processedSizeLocal)); | |
| 99 | |
| 100 _filePos += processedSizeLocal; | |
| 101 realProcessedSize += processedSizeLocal; | |
| 102 if (_filePos == fileSize) | |
| 103 { | |
| 104 bool digestsAreEqual; | |
| 105 if (fi.CrcDefined && _checkCrc) | |
| 106 digestsAreEqual = fi.Crc == _outStreamWithHashSpec->GetCRC(); | |
| 107 else | |
| 108 digestsAreEqual = true; | |
| 109 | |
| 110 RINOK(_extractCallback->SetOperationResult( | |
| 111 digestsAreEqual ? | |
| 112 NArchive::NExtract::NOperationResult::kOK : | |
| 113 NArchive::NExtract::NOperationResult::kCRCError)); | |
| 114 _outStreamWithHashSpec->ReleaseStream(); | |
| 115 _fileIsOpen = false; | |
| 116 _currentIndex++; | |
| 117 } | |
| 118 if (realProcessedSize == size) | |
| 119 { | |
| 120 if (processedSize != NULL) | |
| 121 *processedSize = realProcessedSize; | |
| 122 return WriteEmptyFiles(); | |
| 123 } | |
| 124 } | |
| 125 else | |
| 126 { | |
| 127 RINOK(OpenFile()); | |
| 128 _fileIsOpen = true; | |
| 129 _filePos = 0; | |
| 130 } | |
| 131 } | |
| 132 if (processedSize != NULL) | |
| 133 *processedSize = size; | |
| 134 return S_OK; | |
| 135 } | |
| 136 | |
| 137 HRESULT CFolderOutStream::FlushCorrupted(Int32 resultEOperationResult) | |
| 138 { | |
| 139 while(_currentIndex < _extractStatuses->Size()) | |
| 140 { | |
| 141 if (_fileIsOpen) | |
| 142 { | |
| 143 RINOK(_extractCallback->SetOperationResult(resultEOperationResult)); | |
| 144 _outStreamWithHashSpec->ReleaseStream(); | |
| 145 _fileIsOpen = false; | |
| 146 _currentIndex++; | |
| 147 } | |
| 148 else | |
| 149 { | |
| 150 RINOK(OpenFile()); | |
| 151 _fileIsOpen = true; | |
| 152 } | |
| 153 } | |
| 154 return S_OK; | |
| 155 } | |
| 156 | |
| 157 HRESULT CFolderOutStream::WasWritingFinished() | |
| 158 { | |
| 159 if (_currentIndex == _extractStatuses->Size()) | |
| 160 return S_OK; | |
| 161 return E_FAIL; | |
| 162 } | |
| 163 | |
| 164 }} | |
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Chromium Code Reviews
Issue 624713003:
Keep only base/extractor.[cc|h]. (Closed)
Base URL: https://chromium.googlesource.com/external/omaha.git@master