diff options
Diffstat (limited to 'src/libs/7zip/win/CPP/7zip/Common/StreamObjects.cpp')
-rw-r--r-- | src/libs/7zip/win/CPP/7zip/Common/StreamObjects.cpp | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/src/libs/7zip/win/CPP/7zip/Common/StreamObjects.cpp b/src/libs/7zip/win/CPP/7zip/Common/StreamObjects.cpp deleted file mode 100644 index 7721c3a7e..000000000 --- a/src/libs/7zip/win/CPP/7zip/Common/StreamObjects.cpp +++ /dev/null @@ -1,250 +0,0 @@ -// StreamObjects.cpp - -#include "StdAfx.h" - -#include <stdlib.h> - -#include "../../../C/Alloc.h" - -#include "StreamObjects.h" - -STDMETHODIMP CBufInStream::Read(void *data, UInt32 size, UInt32 *processedSize) -{ - if (processedSize) - *processedSize = 0; - if (size == 0) - return S_OK; - if (_pos >= _size) - return S_OK; - size_t rem = _size - (size_t)_pos; - if (rem > size) - rem = (size_t)size; - memcpy(data, _data + (size_t)_pos, rem); - _pos += rem; - if (processedSize) - *processedSize = (UInt32)rem; - return S_OK; -} - -STDMETHODIMP CBufInStream::Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition) -{ - switch (seekOrigin) - { - case STREAM_SEEK_SET: break; - case STREAM_SEEK_CUR: offset += _pos; break; - case STREAM_SEEK_END: offset += _size; break; - default: return STG_E_INVALIDFUNCTION; - } - if (offset < 0) - return HRESULT_WIN32_ERROR_NEGATIVE_SEEK; - _pos = offset; - if (newPosition) - *newPosition = offset; - return S_OK; -} - -/* -void Create_BufInStream_WithReference(const void *data, size_t size, ISequentialInStream **stream) -{ - CBufInStream *inStreamSpec = new CBufInStream; - CMyComPtr<ISequentialInStream> streamTemp = inStreamSpec; - inStreamSpec->Init((const Byte *)data, size); - *stream = streamTemp.Detach(); -} -*/ - -void Create_BufInStream_WithNewBuf(const void *data, size_t size, ISequentialInStream **stream) -{ - CReferenceBuf *referenceBuf = new CReferenceBuf; - CMyComPtr<IUnknown> ref = referenceBuf; - referenceBuf->Buf.CopyFrom((const Byte *)data, size); - - CBufInStream *inStreamSpec = new CBufInStream; - CMyComPtr<ISequentialInStream> streamTemp = inStreamSpec; - inStreamSpec->Init(referenceBuf); - *stream = streamTemp.Detach(); -} - -void CByteDynBuffer::Free() throw() -{ - free(_buf); - _buf = 0; - _capacity = 0; -} - -bool CByteDynBuffer::EnsureCapacity(size_t cap) throw() -{ - if (cap <= _capacity) - return true; - size_t delta; - if (_capacity > 64) - delta = _capacity / 4; - else if (_capacity > 8) - delta = 16; - else - delta = 4; - cap = MyMax(_capacity + delta, cap); - Byte *buf = (Byte *)realloc(_buf, cap); - if (!buf) - return false; - _buf = buf; - _capacity = cap; - return true; -} - -Byte *CDynBufSeqOutStream::GetBufPtrForWriting(size_t addSize) -{ - addSize += _size; - if (addSize < _size) - return NULL; - if (!_buffer.EnsureCapacity(addSize)) - return NULL; - return (Byte *)_buffer + _size; -} - -void CDynBufSeqOutStream::CopyToBuffer(CByteBuffer &dest) const -{ - dest.CopyFrom((const Byte *)_buffer, _size); -} - -STDMETHODIMP CDynBufSeqOutStream::Write(const void *data, UInt32 size, UInt32 *processedSize) -{ - if (processedSize) - *processedSize = 0; - if (size == 0) - return S_OK; - Byte *buf = GetBufPtrForWriting(size); - if (!buf) - return E_OUTOFMEMORY; - memcpy(buf, data, size); - UpdateSize(size); - if (processedSize) - *processedSize = size; - return S_OK; -} - -STDMETHODIMP CBufPtrSeqOutStream::Write(const void *data, UInt32 size, UInt32 *processedSize) -{ - size_t rem = _size - _pos; - if (rem > size) - rem = (size_t)size; - memcpy(_buffer + _pos, data, rem); - _pos += rem; - if (processedSize) - *processedSize = (UInt32)rem; - return (rem != 0 || size == 0) ? S_OK : E_FAIL; -} - -STDMETHODIMP CSequentialOutStreamSizeCount::Write(const void *data, UInt32 size, UInt32 *processedSize) -{ - UInt32 realProcessedSize; - HRESULT result = _stream->Write(data, size, &realProcessedSize); - _size += realProcessedSize; - if (processedSize) - *processedSize = realProcessedSize; - return result; -} - -static const UInt64 kEmptyTag = (UInt64)(Int64)-1; - -void CCachedInStream::Free() throw() -{ - MyFree(_tags); - _tags = 0; - MidFree(_data); - _data = 0; -} - -bool CCachedInStream::Alloc(unsigned blockSizeLog, unsigned numBlocksLog) throw() -{ - unsigned sizeLog = blockSizeLog + numBlocksLog; - if (sizeLog >= sizeof(size_t) * 8) - return false; - size_t dataSize = (size_t)1 << sizeLog; - if (_data == 0 || dataSize != _dataSize) - { - MidFree(_data); - _data = (Byte *)MidAlloc(dataSize); - if (_data == 0) - return false; - _dataSize = dataSize; - } - if (_tags == 0 || numBlocksLog != _numBlocksLog) - { - MyFree(_tags); - _tags = (UInt64 *)MyAlloc(sizeof(UInt64) << numBlocksLog); - if (_tags == 0) - return false; - _numBlocksLog = numBlocksLog; - } - _blockSizeLog = blockSizeLog; - return true; -} - -void CCachedInStream::Init(UInt64 size) throw() -{ - _size = size; - _pos = 0; - size_t numBlocks = (size_t)1 << _numBlocksLog; - for (size_t i = 0; i < numBlocks; i++) - _tags[i] = kEmptyTag; -} - -STDMETHODIMP CCachedInStream::Read(void *data, UInt32 size, UInt32 *processedSize) -{ - if (processedSize) - *processedSize = 0; - if (size == 0) - return S_OK; - if (_pos >= _size) - return S_OK; - - { - UInt64 rem = _size - _pos; - if (size > rem) - size = (UInt32)rem; - } - - while (size != 0) - { - UInt64 cacheTag = _pos >> _blockSizeLog; - size_t cacheIndex = (size_t)cacheTag & (((size_t)1 << _numBlocksLog) - 1); - Byte *p = _data + (cacheIndex << _blockSizeLog); - if (_tags[cacheIndex] != cacheTag) - { - UInt64 remInBlock = _size - (cacheTag << _blockSizeLog); - size_t blockSize = (size_t)1 << _blockSizeLog; - if (blockSize > remInBlock) - blockSize = (size_t)remInBlock; - RINOK(ReadBlock(cacheTag, p, blockSize)); - _tags[cacheIndex] = cacheTag; - } - size_t offset = (size_t)_pos & (((size_t)1 << _blockSizeLog) - 1); - UInt32 cur = (UInt32)MyMin(((size_t)1 << _blockSizeLog) - offset, (size_t)size); - memcpy(data, p + offset, cur); - if (processedSize) - *processedSize += cur; - data = (void *)((const Byte *)data + cur); - _pos += cur; - size -= cur; - } - - return S_OK; -} - -STDMETHODIMP CCachedInStream::Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition) -{ - switch (seekOrigin) - { - case STREAM_SEEK_SET: break; - case STREAM_SEEK_CUR: offset += _pos; break; - case STREAM_SEEK_END: offset += _size; break; - default: return STG_E_INVALIDFUNCTION; - } - if (offset < 0) - return HRESULT_WIN32_ERROR_NEGATIVE_SEEK; - _pos = offset; - if (newPosition) - *newPosition = offset; - return S_OK; -} |