diff options
Diffstat (limited to 'CPP/7zip/Compress/Lzx86Converter.cpp')
-rw-r--r-- | CPP/7zip/Compress/Lzx86Converter.cpp | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/CPP/7zip/Compress/Lzx86Converter.cpp b/CPP/7zip/Compress/Lzx86Converter.cpp deleted file mode 100644 index 3a63057a..00000000 --- a/CPP/7zip/Compress/Lzx86Converter.cpp +++ /dev/null @@ -1,90 +0,0 @@ -// Lzx86Converter.cpp - -#include "StdAfx.h" - -#include "../../Common/Defs.h" - -#include "Lzx86Converter.h" - -namespace NCompress { -namespace NLzx { - -static const UInt32 kResidue = 6 + 4; - -void Cx86ConvertOutStream::MakeTranslation() -{ - if (_pos <= kResidue) - return; - UInt32 numBytes = _pos - kResidue; - Byte *buf = _buf; - for (UInt32 i = 0; i < numBytes;) - { - if (buf[i++] == 0xE8) - { - Int32 absValue = 0; - unsigned j; - for (j = 0; j < 4; j++) - absValue += (UInt32)buf[i + j] << (j * 8); - Int32 pos = (Int32)(_processedSize + i - 1); - if (absValue >= -pos && absValue < (Int32)_translationSize) - { - UInt32 offset = (absValue >= 0) ? - absValue - pos : - absValue + _translationSize; - for (j = 0; j < 4; j++) - { - buf[i + j] = (Byte)(offset & 0xFF); - offset >>= 8; - } - } - i += 4; - } - } -} - -STDMETHODIMP Cx86ConvertOutStream::Write(const void *data, UInt32 size, UInt32 *processedSize) -{ - if (processedSize) - *processedSize = 0; - if (!_translationMode) - return _stream->Write(data, size, processedSize); - UInt32 realProcessedSize = 0; - while (realProcessedSize < size) - { - UInt32 writeSize = MyMin(size - realProcessedSize, kUncompressedBlockSize - _pos); - memcpy(_buf + _pos, (const Byte *)data + realProcessedSize, writeSize); - _pos += writeSize; - realProcessedSize += writeSize; - if (_pos == kUncompressedBlockSize) - { - RINOK(Flush()); - } - } - if (processedSize) - *processedSize = realProcessedSize; - return S_OK; -} - -HRESULT Cx86ConvertOutStream::Flush() -{ - if (_pos == 0) - return S_OK; - if (_translationMode) - MakeTranslation(); - UInt32 pos = 0; - do - { - UInt32 processed; - RINOK(_stream->Write(_buf + pos, _pos - pos, &processed)); - if (processed == 0) - return E_FAIL; - pos += processed; - } - while (pos < _pos); - _processedSize += _pos; - _pos = 0; - _translationMode = (_translationMode && (_processedSize < ((UInt32)1 << 30))); - return S_OK; -} - -}} |