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4.27 beta

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This commit is contained in:
Igor Pavlov
2005-09-21 00:00:00 +00:00
committed by Kornel Lesiński
parent 31e7b924e8
commit d66cf2fcf3
393 changed files with 17345 additions and 4743 deletions
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11
7zip/Compress/Implode/ImplodeHuffmanDecoder.cpp
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@@ -19,7 +19,7 @@ CDecoder::~CDecoder()
delete []m_Symbols;
}
void CDecoder::SetCodeLengths(const Byte *codeLengths)
bool CDecoder::SetCodeLengths(const Byte *codeLengths)
{
// int lenCounts[kNumBitsInLongestCode + 1], tmpPositions[kNumBitsInLongestCode + 1];
int lenCounts[kNumBitsInLongestCode + 2], tmpPositions[kNumBitsInLongestCode + 1];
@@ -44,7 +44,7 @@ void CDecoder::SetCodeLengths(const Byte *codeLengths)
{
startPos += lenCounts[i] << (kNumBitsInLongestCode - i);
if (startPos > kMaxValue)
throw CDecoderException();
return false;
m_Limitits[i] = startPos;
m_Positions[i] = m_Positions[i + 1] + lenCounts[i + 1];
tmpPositions[i] = m_Positions[i] + lenCounts[i];
@@ -54,12 +54,13 @@ void CDecoder::SetCodeLengths(const Byte *codeLengths)
// if _ZIP_MODE do not throw exception for trees containing only one node
// #ifndef _ZIP_MODE
if (startPos != kMaxValue)
throw CDecoderException();
return false;
// #endif
for (symbolIndex = 0; symbolIndex < m_NumSymbols; symbolIndex++)
if (codeLengths[symbolIndex] != 0)
m_Symbols[--tmpPositions[codeLengths[symbolIndex]]] = symbolIndex;
return true;
}
UInt32 CDecoder::DecodeSymbol(CInBit *inStream)
@@ -76,12 +77,12 @@ UInt32 CDecoder::DecodeSymbol(CInBit *inStream)
}
}
if (i == 0)
throw CDecoderException();
return 0xFFFFFFFF;
inStream->MovePos(numBits);
UInt32 index = m_Positions[numBits] +
((value - m_Limitits[numBits + 1]) >> (kNumBitsInLongestCode - numBits));
if (index >= m_NumSymbols)
throw CDecoderException(); // test it
return 0xFFFFFFFF;
return m_Symbols[index];
}