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This commit is contained in:
Igor Pavlov
2005-05-30 00:00:00 +00:00
committed by Kornel Lesiński
parent 8c1b5c7b7e
commit 3c510ba80b
926 changed files with 40559 additions and 23519 deletions
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58
7zip/Common/InBuffer.cpp
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@@ -1,41 +1,73 @@
// InBuffer.cpp
#include "stdafx.h"
#include "StdAfx.h"
#include "InBuffer.h"
CInBuffer::CInBuffer(UINT32 bufferSize):
_bufferSize(bufferSize),
_bufferBase(0)
#include "../../Common/Alloc.h"
CInBuffer::CInBuffer():
_bufferBase(0),
_bufferSize(0),
_buffer(0),
_bufferLimit(0),
_stream(0)
{}
bool CInBuffer::Create(UInt32 bufferSize)
{
_bufferBase = new BYTE[_bufferSize];
const UInt32 kMinBlockSize = 1;
if (bufferSize < kMinBlockSize)
bufferSize = kMinBlockSize;
if (_bufferBase != 0 && _bufferSize == bufferSize)
return true;
Free();
_bufferSize = bufferSize;
_bufferBase = (Byte *)::BigAlloc(bufferSize);
return (_bufferBase != 0);
}
CInBuffer::~CInBuffer()
void CInBuffer::Free()
{
delete []_bufferBase;
BigFree(_bufferBase);
_bufferBase = 0;
}
void CInBuffer::Init(ISequentialInStream *stream)
void CInBuffer::SetStream(ISequentialInStream *stream)
{
_stream = stream;
}
void CInBuffer::Init()
{
_processedSize = 0;
_buffer = _bufferBase;
_bufferLimit = _buffer;
_streamWasExhausted = false;
_wasFinished = false;
#ifdef _NO_EXCEPTIONS
ErrorCode = S_OK;
#endif
}
bool CInBuffer::ReadBlock()
{
if (_streamWasExhausted)
#ifdef _NO_EXCEPTIONS
if (ErrorCode != S_OK)
return false;
#endif
if (_wasFinished)
return false;
_processedSize += (_buffer - _bufferBase);
UINT32 numProcessedBytes;
UInt32 numProcessedBytes;
HRESULT result = _stream->ReadPart(_bufferBase, _bufferSize, &numProcessedBytes);
#ifdef _NO_EXCEPTIONS
ErrorCode = result;
#else
if (result != S_OK)
throw CInBufferException(result);
#endif
_buffer = _bufferBase;
_bufferLimit = _buffer + numProcessedBytes;
_streamWasExhausted = (numProcessedBytes == 0);
return (!_streamWasExhausted);
_wasFinished = (numProcessedBytes == 0);
return (!_wasFinished);
}