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| (Empty) |
| 1 // OutByte.cpp | |
| 2 | |
| 3 #include "StdAfx.h" | |
| 4 | |
| 5 #include "OutBuffer.h" | |
| 6 | |
| 7 extern "C" | |
| 8 { | |
| 9 #include "../../../C/Alloc.h" | |
| 10 } | |
| 11 | |
| 12 bool COutBuffer::Create(UInt32 bufferSize) | |
| 13 { | |
| 14 const UInt32 kMinBlockSize = 1; | |
| 15 if (bufferSize < kMinBlockSize) | |
| 16 bufferSize = kMinBlockSize; | |
| 17 if (_buffer != 0 && _bufferSize == bufferSize) | |
| 18 return true; | |
| 19 Free(); | |
| 20 _bufferSize = bufferSize; | |
| 21 _buffer = (Byte *)::MidAlloc(bufferSize); | |
| 22 return (_buffer != 0); | |
| 23 } | |
| 24 | |
| 25 void COutBuffer::Free() | |
| 26 { | |
| 27 ::MidFree(_buffer); | |
| 28 _buffer = 0; | |
| 29 } | |
| 30 | |
| 31 void COutBuffer::SetStream(ISequentialOutStream *stream) | |
| 32 { | |
| 33 _stream = stream; | |
| 34 } | |
| 35 | |
| 36 void COutBuffer::Init() | |
| 37 { | |
| 38 _streamPos = 0; | |
| 39 _limitPos = _bufferSize; | |
| 40 _pos = 0; | |
| 41 _processedSize = 0; | |
| 42 _overDict = false; | |
| 43 #ifdef _NO_EXCEPTIONS | |
| 44 ErrorCode = S_OK; | |
| 45 #endif | |
| 46 } | |
| 47 | |
| 48 UInt64 COutBuffer::GetProcessedSize() const | |
| 49 { | |
| 50 UInt64 res = _processedSize + _pos - _streamPos; | |
| 51 if (_streamPos > _pos) | |
| 52 res += _bufferSize; | |
| 53 return res; | |
| 54 } | |
| 55 | |
| 56 | |
| 57 HRESULT COutBuffer::FlushPart() | |
| 58 { | |
| 59 // _streamPos < _bufferSize | |
| 60 UInt32 size = (_streamPos >= _pos) ? (_bufferSize - _streamPos) : (_pos - _str
eamPos); | |
| 61 HRESULT result = S_OK; | |
| 62 #ifdef _NO_EXCEPTIONS | |
| 63 result = ErrorCode; | |
| 64 #endif | |
| 65 if (_buffer2 != 0) | |
| 66 { | |
| 67 memmove(_buffer2, _buffer + _streamPos, size); | |
| 68 _buffer2 += size; | |
| 69 } | |
| 70 | |
| 71 if (_stream != 0 | |
| 72 #ifdef _NO_EXCEPTIONS | |
| 73 && (ErrorCode == S_OK) | |
| 74 #endif | |
| 75 ) | |
| 76 { | |
| 77 UInt32 processedSize = 0; | |
| 78 result = _stream->Write(_buffer + _streamPos, size, &processedSize); | |
| 79 size = processedSize; | |
| 80 } | |
| 81 _streamPos += size; | |
| 82 if (_streamPos == _bufferSize) | |
| 83 _streamPos = 0; | |
| 84 if (_pos == _bufferSize) | |
| 85 { | |
| 86 _overDict = true; | |
| 87 _pos = 0; | |
| 88 } | |
| 89 _limitPos = (_streamPos > _pos) ? _streamPos : _bufferSize; | |
| 90 _processedSize += size; | |
| 91 return result; | |
| 92 } | |
| 93 | |
| 94 HRESULT COutBuffer::Flush() | |
| 95 { | |
| 96 #ifdef _NO_EXCEPTIONS | |
| 97 if (ErrorCode != S_OK) | |
| 98 return ErrorCode; | |
| 99 #endif | |
| 100 | |
| 101 while(_streamPos != _pos) | |
| 102 { | |
| 103 HRESULT result = FlushPart(); | |
| 104 if (result != S_OK) | |
| 105 return result; | |
| 106 } | |
| 107 return S_OK; | |
| 108 } | |
| 109 | |
| 110 void COutBuffer::FlushWithCheck() | |
| 111 { | |
| 112 HRESULT result = Flush(); | |
| 113 #ifdef _NO_EXCEPTIONS | |
| 114 ErrorCode = result; | |
| 115 #else | |
| 116 if (result != S_OK) | |
| 117 throw COutBufferException(result); | |
| 118 #endif | |
| 119 } | |
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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