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4.20

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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/Compress/Arj/Decoder2.cpp
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@@ -4,43 +4,40 @@
#include "Decoder2.h"
#include "Windows/Defs.h"
namespace NCompress{
namespace NArj {
namespace NDecoder2 {
static const UINT32 kHistorySize = 26624;
static const UINT32 kMatchMaxLen = 256;
static const UINT32 kMatchMinLen = 3;
CCoder::CCoder()
{}
static const UInt32 kHistorySize = 26624;
static const UInt32 kMatchMaxLen = 256;
static const UInt32 kMatchMinLen = 3;
STDMETHODIMP CCoder::CodeReal(ISequentialInStream *inStream,
ISequentialOutStream *outStream, const UINT64 *inSize, const UINT64 *outSize,
ISequentialOutStream *outStream, const UInt64 *inSize, const UInt64 *outSize,
ICompressProgressInfo *progress)
{
if (outSize == NULL)
return E_INVALIDARG;
if (!m_OutWindowStream.IsCreated())
{
try { m_OutWindowStream.Create(kHistorySize); }
catch(...) { return E_OUTOFMEMORY; }
}
UINT64 pos = 0;
m_OutWindowStream.Init(outStream, false);
m_InBitStream.Init(inStream);
if (!m_OutWindowStream.Create(kHistorySize))
return E_OUTOFMEMORY;
if (!m_InBitStream.Create(1 << 20))
return E_OUTOFMEMORY;
UInt64 pos = 0;
m_OutWindowStream.SetStream(outStream);
m_OutWindowStream.Init(false);
m_InBitStream.SetStream(inStream);
m_InBitStream.Init();
CCoderReleaser coderReleaser(this);
while(pos < *outSize)
{
const UINT32 kStartWidth = 0;
const UINT32 kStopWidth = 7;
UINT32 power = 1 << kStartWidth;
UINT32 width;
UINT32 len = 0;
const UInt32 kStartWidth = 0;
const UInt32 kStopWidth = 7;
UInt32 power = 1 << kStartWidth;
UInt32 width;
UInt32 len = 0;
for (width = kStartWidth; width < kStopWidth; width++)
{
if (m_InBitStream.ReadBits(1) == 0)
@@ -52,18 +49,18 @@ STDMETHODIMP CCoder::CodeReal(ISequentialInStream *inStream,
len += m_InBitStream.ReadBits(width);
if (len == 0)
{
m_OutWindowStream.PutOneByte(m_InBitStream.ReadBits(8));
m_OutWindowStream.PutByte(m_InBitStream.ReadBits(8));
pos++;
continue;
}
else
{
len = len - 1 + kMatchMinLen;
const UINT32 kStartWidth = 9;
const UINT32 kStopWidth = 13;
UINT32 power = 1 << kStartWidth;
UINT32 width;
UINT32 distance = 0;
const UInt32 kStartWidth = 9;
const UInt32 kStopWidth = 13;
UInt32 power = 1 << kStartWidth;
UInt32 width;
UInt32 distance = 0;
for (width = kStartWidth; width < kStopWidth; width++)
{
if (m_InBitStream.ReadBits(1) == 0)
@@ -75,15 +72,16 @@ STDMETHODIMP CCoder::CodeReal(ISequentialInStream *inStream,
distance += m_InBitStream.ReadBits(width);
if (distance >= pos)
throw "data error";
m_OutWindowStream.CopyBackBlock(distance, len);
m_OutWindowStream.CopyBlock(distance, len);
pos += len;
}
}
coderReleaser.NeedFlush = false;
return m_OutWindowStream.Flush();
}
STDMETHODIMP CCoder::Code(ISequentialInStream *inStream,
ISequentialOutStream *outStream, const UINT64 *inSize, const UINT64 *outSize,
ISequentialOutStream *outStream, const UInt64 *inSize, const UInt64 *outSize,
ICompressProgressInfo *progress)
{
try { return CodeReal(inStream, outStream, inSize, outSize, progress);}