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https://github.com/aaru-dps/libaaruformat.git
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Add LZMA.
This commit is contained in:
382
3rdparty/lzma-21.03beta/Java/SevenZip/Compression/LZ/BinTree.java
vendored
Normal file
382
3rdparty/lzma-21.03beta/Java/SevenZip/Compression/LZ/BinTree.java
vendored
Normal file
@@ -0,0 +1,382 @@
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// LZ.BinTree
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package SevenZip.Compression.LZ;
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import java.io.IOException;
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public class BinTree extends InWindow
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{
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int _cyclicBufferPos;
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int _cyclicBufferSize = 0;
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int _matchMaxLen;
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int[] _son;
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int[] _hash;
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int _cutValue = 0xFF;
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int _hashMask;
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int _hashSizeSum = 0;
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boolean HASH_ARRAY = true;
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static final int kHash2Size = 1 << 10;
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static final int kHash3Size = 1 << 16;
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static final int kBT2HashSize = 1 << 16;
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static final int kStartMaxLen = 1;
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static final int kHash3Offset = kHash2Size;
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static final int kEmptyHashValue = 0;
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static final int kMaxValForNormalize = (1 << 30) - 1;
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int kNumHashDirectBytes = 0;
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int kMinMatchCheck = 4;
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int kFixHashSize = kHash2Size + kHash3Size;
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public void SetType(int numHashBytes)
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{
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HASH_ARRAY = (numHashBytes > 2);
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if (HASH_ARRAY)
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{
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kNumHashDirectBytes = 0;
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kMinMatchCheck = 4;
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kFixHashSize = kHash2Size + kHash3Size;
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}
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else
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{
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kNumHashDirectBytes = 2;
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kMinMatchCheck = 2 + 1;
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kFixHashSize = 0;
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}
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}
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public void Init() throws IOException
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{
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super.Init();
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for (int i = 0; i < _hashSizeSum; i++)
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_hash[i] = kEmptyHashValue;
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_cyclicBufferPos = 0;
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ReduceOffsets(-1);
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}
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public void MovePos() throws IOException
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{
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if (++_cyclicBufferPos >= _cyclicBufferSize)
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_cyclicBufferPos = 0;
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super.MovePos();
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if (_pos == kMaxValForNormalize)
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Normalize();
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}
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public boolean Create(int historySize, int keepAddBufferBefore,
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int matchMaxLen, int keepAddBufferAfter)
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{
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if (historySize > kMaxValForNormalize - 256)
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return false;
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_cutValue = 16 + (matchMaxLen >> 1);
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int windowReservSize = (historySize + keepAddBufferBefore +
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matchMaxLen + keepAddBufferAfter) / 2 + 256;
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super.Create(historySize + keepAddBufferBefore, matchMaxLen + keepAddBufferAfter, windowReservSize);
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_matchMaxLen = matchMaxLen;
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int cyclicBufferSize = historySize + 1;
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if (_cyclicBufferSize != cyclicBufferSize)
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_son = new int[(_cyclicBufferSize = cyclicBufferSize) * 2];
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int hs = kBT2HashSize;
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if (HASH_ARRAY)
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{
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hs = historySize - 1;
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hs |= (hs >> 1);
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hs |= (hs >> 2);
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hs |= (hs >> 4);
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hs |= (hs >> 8);
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hs >>= 1;
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hs |= 0xFFFF;
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if (hs > (1 << 24))
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hs >>= 1;
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_hashMask = hs;
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hs++;
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hs += kFixHashSize;
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}
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if (hs != _hashSizeSum)
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_hash = new int [_hashSizeSum = hs];
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return true;
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}
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public int GetMatches(int[] distances) throws IOException
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{
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int lenLimit;
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if (_pos + _matchMaxLen <= _streamPos)
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lenLimit = _matchMaxLen;
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else
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{
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lenLimit = _streamPos - _pos;
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if (lenLimit < kMinMatchCheck)
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{
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MovePos();
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return 0;
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}
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}
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int offset = 0;
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int matchMinPos = (_pos > _cyclicBufferSize) ? (_pos - _cyclicBufferSize) : 0;
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int cur = _bufferOffset + _pos;
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int maxLen = kStartMaxLen; // to avoid items for len < hashSize;
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int hashValue, hash2Value = 0, hash3Value = 0;
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if (HASH_ARRAY)
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{
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int temp = CrcTable[_bufferBase[cur] & 0xFF] ^ (_bufferBase[cur + 1] & 0xFF);
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hash2Value = temp & (kHash2Size - 1);
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temp ^= ((int)(_bufferBase[cur + 2] & 0xFF) << 8);
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hash3Value = temp & (kHash3Size - 1);
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hashValue = (temp ^ (CrcTable[_bufferBase[cur + 3] & 0xFF] << 5)) & _hashMask;
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}
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else
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hashValue = ((_bufferBase[cur] & 0xFF) ^ ((int)(_bufferBase[cur + 1] & 0xFF) << 8));
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int curMatch = _hash[kFixHashSize + hashValue];
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if (HASH_ARRAY)
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{
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int curMatch2 = _hash[hash2Value];
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int curMatch3 = _hash[kHash3Offset + hash3Value];
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_hash[hash2Value] = _pos;
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_hash[kHash3Offset + hash3Value] = _pos;
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if (curMatch2 > matchMinPos)
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if (_bufferBase[_bufferOffset + curMatch2] == _bufferBase[cur])
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{
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distances[offset++] = maxLen = 2;
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distances[offset++] = _pos - curMatch2 - 1;
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}
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if (curMatch3 > matchMinPos)
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if (_bufferBase[_bufferOffset + curMatch3] == _bufferBase[cur])
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{
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if (curMatch3 == curMatch2)
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offset -= 2;
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distances[offset++] = maxLen = 3;
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distances[offset++] = _pos - curMatch3 - 1;
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curMatch2 = curMatch3;
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}
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if (offset != 0 && curMatch2 == curMatch)
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{
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offset -= 2;
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maxLen = kStartMaxLen;
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}
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}
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_hash[kFixHashSize + hashValue] = _pos;
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int ptr0 = (_cyclicBufferPos << 1) + 1;
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int ptr1 = (_cyclicBufferPos << 1);
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int len0, len1;
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len0 = len1 = kNumHashDirectBytes;
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if (kNumHashDirectBytes != 0)
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{
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if (curMatch > matchMinPos)
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{
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if (_bufferBase[_bufferOffset + curMatch + kNumHashDirectBytes] !=
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_bufferBase[cur + kNumHashDirectBytes])
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{
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distances[offset++] = maxLen = kNumHashDirectBytes;
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distances[offset++] = _pos - curMatch - 1;
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}
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}
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}
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int count = _cutValue;
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while (true)
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{
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if (curMatch <= matchMinPos || count-- == 0)
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{
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_son[ptr0] = _son[ptr1] = kEmptyHashValue;
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break;
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}
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int delta = _pos - curMatch;
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int cyclicPos = ((delta <= _cyclicBufferPos) ?
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(_cyclicBufferPos - delta) :
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(_cyclicBufferPos - delta + _cyclicBufferSize)) << 1;
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int pby1 = _bufferOffset + curMatch;
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int len = Math.min(len0, len1);
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if (_bufferBase[pby1 + len] == _bufferBase[cur + len])
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{
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while(++len != lenLimit)
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if (_bufferBase[pby1 + len] != _bufferBase[cur + len])
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break;
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if (maxLen < len)
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{
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distances[offset++] = maxLen = len;
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distances[offset++] = delta - 1;
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if (len == lenLimit)
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{
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_son[ptr1] = _son[cyclicPos];
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_son[ptr0] = _son[cyclicPos + 1];
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break;
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}
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}
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}
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if ((_bufferBase[pby1 + len] & 0xFF) < (_bufferBase[cur + len] & 0xFF))
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{
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_son[ptr1] = curMatch;
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ptr1 = cyclicPos + 1;
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curMatch = _son[ptr1];
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len1 = len;
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}
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else
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{
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_son[ptr0] = curMatch;
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ptr0 = cyclicPos;
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curMatch = _son[ptr0];
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len0 = len;
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}
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}
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MovePos();
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return offset;
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}
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public void Skip(int num) throws IOException
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{
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do
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{
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int lenLimit;
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if (_pos + _matchMaxLen <= _streamPos)
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lenLimit = _matchMaxLen;
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else
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{
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lenLimit = _streamPos - _pos;
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if (lenLimit < kMinMatchCheck)
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{
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MovePos();
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continue;
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}
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}
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int matchMinPos = (_pos > _cyclicBufferSize) ? (_pos - _cyclicBufferSize) : 0;
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int cur = _bufferOffset + _pos;
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int hashValue;
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if (HASH_ARRAY)
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{
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int temp = CrcTable[_bufferBase[cur] & 0xFF] ^ (_bufferBase[cur + 1] & 0xFF);
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int hash2Value = temp & (kHash2Size - 1);
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_hash[hash2Value] = _pos;
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temp ^= ((int)(_bufferBase[cur + 2] & 0xFF) << 8);
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int hash3Value = temp & (kHash3Size - 1);
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_hash[kHash3Offset + hash3Value] = _pos;
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hashValue = (temp ^ (CrcTable[_bufferBase[cur + 3] & 0xFF] << 5)) & _hashMask;
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}
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else
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hashValue = ((_bufferBase[cur] & 0xFF) ^ ((int)(_bufferBase[cur + 1] & 0xFF) << 8));
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int curMatch = _hash[kFixHashSize + hashValue];
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_hash[kFixHashSize + hashValue] = _pos;
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int ptr0 = (_cyclicBufferPos << 1) + 1;
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int ptr1 = (_cyclicBufferPos << 1);
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int len0, len1;
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len0 = len1 = kNumHashDirectBytes;
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int count = _cutValue;
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while (true)
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{
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if (curMatch <= matchMinPos || count-- == 0)
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{
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_son[ptr0] = _son[ptr1] = kEmptyHashValue;
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break;
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}
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int delta = _pos - curMatch;
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int cyclicPos = ((delta <= _cyclicBufferPos) ?
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(_cyclicBufferPos - delta) :
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(_cyclicBufferPos - delta + _cyclicBufferSize)) << 1;
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int pby1 = _bufferOffset + curMatch;
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int len = Math.min(len0, len1);
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if (_bufferBase[pby1 + len] == _bufferBase[cur + len])
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{
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while (++len != lenLimit)
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if (_bufferBase[pby1 + len] != _bufferBase[cur + len])
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break;
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if (len == lenLimit)
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{
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_son[ptr1] = _son[cyclicPos];
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_son[ptr0] = _son[cyclicPos + 1];
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break;
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}
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}
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if ((_bufferBase[pby1 + len] & 0xFF) < (_bufferBase[cur + len] & 0xFF))
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{
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_son[ptr1] = curMatch;
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ptr1 = cyclicPos + 1;
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curMatch = _son[ptr1];
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len1 = len;
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}
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else
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{
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_son[ptr0] = curMatch;
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ptr0 = cyclicPos;
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curMatch = _son[ptr0];
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len0 = len;
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}
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}
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MovePos();
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}
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while (--num != 0);
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}
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void NormalizeLinks(int[] items, int numItems, int subValue)
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{
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for (int i = 0; i < numItems; i++)
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{
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int value = items[i];
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if (value <= subValue)
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value = kEmptyHashValue;
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else
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value -= subValue;
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items[i] = value;
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}
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}
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void Normalize()
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{
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int subValue = _pos - _cyclicBufferSize;
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NormalizeLinks(_son, _cyclicBufferSize * 2, subValue);
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NormalizeLinks(_hash, _hashSizeSum, subValue);
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ReduceOffsets(subValue);
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}
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||||
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public void SetCutValue(int cutValue) { _cutValue = cutValue; }
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||||
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private static final int[] CrcTable = new int[256];
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||||
static
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{
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for (int i = 0; i < 256; i++)
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||||
{
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int r = i;
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for (int j = 0; j < 8; j++)
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if ((r & 1) != 0)
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r = (r >>> 1) ^ 0xEDB88320;
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||||
else
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||||
r >>>= 1;
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||||
CrcTable[i] = r;
|
||||
}
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||||
}
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}
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131
3rdparty/lzma-21.03beta/Java/SevenZip/Compression/LZ/InWindow.java
vendored
Normal file
131
3rdparty/lzma-21.03beta/Java/SevenZip/Compression/LZ/InWindow.java
vendored
Normal file
@@ -0,0 +1,131 @@
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// LZ.InWindow
|
||||
|
||||
package SevenZip.Compression.LZ;
|
||||
|
||||
import java.io.IOException;
|
||||
|
||||
public class InWindow
|
||||
{
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||||
public byte[] _bufferBase; // pointer to buffer with data
|
||||
java.io.InputStream _stream;
|
||||
int _posLimit; // offset (from _buffer) of first byte when new block reading must be done
|
||||
boolean _streamEndWasReached; // if (true) then _streamPos shows real end of stream
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||||
|
||||
int _pointerToLastSafePosition;
|
||||
|
||||
public int _bufferOffset;
|
||||
|
||||
public int _blockSize; // Size of Allocated memory block
|
||||
public int _pos; // offset (from _buffer) of curent byte
|
||||
int _keepSizeBefore; // how many BYTEs must be kept in buffer before _pos
|
||||
int _keepSizeAfter; // how many BYTEs must be kept buffer after _pos
|
||||
public int _streamPos; // offset (from _buffer) of first not read byte from Stream
|
||||
|
||||
public void MoveBlock()
|
||||
{
|
||||
int offset = _bufferOffset + _pos - _keepSizeBefore;
|
||||
// we need one additional byte, since MovePos moves on 1 byte.
|
||||
if (offset > 0)
|
||||
offset--;
|
||||
|
||||
int numBytes = _bufferOffset + _streamPos - offset;
|
||||
|
||||
// check negative offset ????
|
||||
for (int i = 0; i < numBytes; i++)
|
||||
_bufferBase[i] = _bufferBase[offset + i];
|
||||
_bufferOffset -= offset;
|
||||
}
|
||||
|
||||
public void ReadBlock() throws IOException
|
||||
{
|
||||
if (_streamEndWasReached)
|
||||
return;
|
||||
while (true)
|
||||
{
|
||||
int size = (0 - _bufferOffset) + _blockSize - _streamPos;
|
||||
if (size == 0)
|
||||
return;
|
||||
int numReadBytes = _stream.read(_bufferBase, _bufferOffset + _streamPos, size);
|
||||
if (numReadBytes == -1)
|
||||
{
|
||||
_posLimit = _streamPos;
|
||||
int pointerToPostion = _bufferOffset + _posLimit;
|
||||
if (pointerToPostion > _pointerToLastSafePosition)
|
||||
_posLimit = _pointerToLastSafePosition - _bufferOffset;
|
||||
|
||||
_streamEndWasReached = true;
|
||||
return;
|
||||
}
|
||||
_streamPos += numReadBytes;
|
||||
if (_streamPos >= _pos + _keepSizeAfter)
|
||||
_posLimit = _streamPos - _keepSizeAfter;
|
||||
}
|
||||
}
|
||||
|
||||
void Free() { _bufferBase = null; }
|
||||
|
||||
public void Create(int keepSizeBefore, int keepSizeAfter, int keepSizeReserv)
|
||||
{
|
||||
_keepSizeBefore = keepSizeBefore;
|
||||
_keepSizeAfter = keepSizeAfter;
|
||||
int blockSize = keepSizeBefore + keepSizeAfter + keepSizeReserv;
|
||||
if (_bufferBase == null || _blockSize != blockSize)
|
||||
{
|
||||
Free();
|
||||
_blockSize = blockSize;
|
||||
_bufferBase = new byte[_blockSize];
|
||||
}
|
||||
_pointerToLastSafePosition = _blockSize - keepSizeAfter;
|
||||
}
|
||||
|
||||
public void SetStream(java.io.InputStream stream) { _stream = stream; }
|
||||
public void ReleaseStream() { _stream = null; }
|
||||
|
||||
public void Init() throws IOException
|
||||
{
|
||||
_bufferOffset = 0;
|
||||
_pos = 0;
|
||||
_streamPos = 0;
|
||||
_streamEndWasReached = false;
|
||||
ReadBlock();
|
||||
}
|
||||
|
||||
public void MovePos() throws IOException
|
||||
{
|
||||
_pos++;
|
||||
if (_pos > _posLimit)
|
||||
{
|
||||
int pointerToPostion = _bufferOffset + _pos;
|
||||
if (pointerToPostion > _pointerToLastSafePosition)
|
||||
MoveBlock();
|
||||
ReadBlock();
|
||||
}
|
||||
}
|
||||
|
||||
public byte GetIndexByte(int index) { return _bufferBase[_bufferOffset + _pos + index]; }
|
||||
|
||||
// index + limit have not to exceed _keepSizeAfter;
|
||||
public int GetMatchLen(int index, int distance, int limit)
|
||||
{
|
||||
if (_streamEndWasReached)
|
||||
if ((_pos + index) + limit > _streamPos)
|
||||
limit = _streamPos - (_pos + index);
|
||||
distance++;
|
||||
// Byte *pby = _buffer + (size_t)_pos + index;
|
||||
int pby = _bufferOffset + _pos + index;
|
||||
|
||||
int i;
|
||||
for (i = 0; i < limit && _bufferBase[pby + i] == _bufferBase[pby + i - distance]; i++);
|
||||
return i;
|
||||
}
|
||||
|
||||
public int GetNumAvailableBytes() { return _streamPos - _pos; }
|
||||
|
||||
public void ReduceOffsets(int subValue)
|
||||
{
|
||||
_bufferOffset += subValue;
|
||||
_posLimit -= subValue;
|
||||
_pos -= subValue;
|
||||
_streamPos -= subValue;
|
||||
}
|
||||
}
|
||||
85
3rdparty/lzma-21.03beta/Java/SevenZip/Compression/LZ/OutWindow.java
vendored
Normal file
85
3rdparty/lzma-21.03beta/Java/SevenZip/Compression/LZ/OutWindow.java
vendored
Normal file
@@ -0,0 +1,85 @@
|
||||
// LZ.OutWindow
|
||||
|
||||
package SevenZip.Compression.LZ;
|
||||
|
||||
import java.io.IOException;
|
||||
|
||||
public class OutWindow
|
||||
{
|
||||
byte[] _buffer;
|
||||
int _pos;
|
||||
int _windowSize = 0;
|
||||
int _streamPos;
|
||||
java.io.OutputStream _stream;
|
||||
|
||||
public void Create(int windowSize)
|
||||
{
|
||||
if (_buffer == null || _windowSize != windowSize)
|
||||
_buffer = new byte[windowSize];
|
||||
_windowSize = windowSize;
|
||||
_pos = 0;
|
||||
_streamPos = 0;
|
||||
}
|
||||
|
||||
public void SetStream(java.io.OutputStream stream) throws IOException
|
||||
{
|
||||
ReleaseStream();
|
||||
_stream = stream;
|
||||
}
|
||||
|
||||
public void ReleaseStream() throws IOException
|
||||
{
|
||||
Flush();
|
||||
_stream = null;
|
||||
}
|
||||
|
||||
public void Init(boolean solid)
|
||||
{
|
||||
if (!solid)
|
||||
{
|
||||
_streamPos = 0;
|
||||
_pos = 0;
|
||||
}
|
||||
}
|
||||
|
||||
public void Flush() throws IOException
|
||||
{
|
||||
int size = _pos - _streamPos;
|
||||
if (size == 0)
|
||||
return;
|
||||
_stream.write(_buffer, _streamPos, size);
|
||||
if (_pos >= _windowSize)
|
||||
_pos = 0;
|
||||
_streamPos = _pos;
|
||||
}
|
||||
|
||||
public void CopyBlock(int distance, int len) throws IOException
|
||||
{
|
||||
int pos = _pos - distance - 1;
|
||||
if (pos < 0)
|
||||
pos += _windowSize;
|
||||
for (; len != 0; len--)
|
||||
{
|
||||
if (pos >= _windowSize)
|
||||
pos = 0;
|
||||
_buffer[_pos++] = _buffer[pos++];
|
||||
if (_pos >= _windowSize)
|
||||
Flush();
|
||||
}
|
||||
}
|
||||
|
||||
public void PutByte(byte b) throws IOException
|
||||
{
|
||||
_buffer[_pos++] = b;
|
||||
if (_pos >= _windowSize)
|
||||
Flush();
|
||||
}
|
||||
|
||||
public byte GetByte(int distance)
|
||||
{
|
||||
int pos = _pos - distance - 1;
|
||||
if (pos < 0)
|
||||
pos += _windowSize;
|
||||
return _buffer[pos];
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user