diff options
Diffstat (limited to 'src/com/github/junrar/unpack/Unpack15.java')
| -rw-r--r-- | src/com/github/junrar/unpack/Unpack15.java | 620 |
1 files changed, 0 insertions, 620 deletions
diff --git a/src/com/github/junrar/unpack/Unpack15.java b/src/com/github/junrar/unpack/Unpack15.java deleted file mode 100644 index d365cc6..0000000 --- a/src/com/github/junrar/unpack/Unpack15.java +++ /dev/null @@ -1,620 +0,0 @@ -/*
- * Copyright (c) 2007 innoSysTec (R) GmbH, Germany. All rights reserved.
- * Original author: Edmund Wagner
- * Creation date: 21.06.2007
- *
- * Source: $HeadURL$
- * Last changed: $LastChangedDate$
- *
- * the unrar licence applies to all junrar source and binary distributions
- * you are not allowed to use this source to re-create the RAR compression algorithm
- *
- * Here some html entities which can be used for escaping javadoc tags:
- * "&": "&" or "&"
- * "<": "<" or "<"
- * ">": ">" or ">"
- * "@": "@"
- */
-package com.github.junrar.unpack;
-
-import java.io.IOException;
-import java.util.Arrays;
-
-import com.github.junrar.exception.RarException;
-import com.github.junrar.unpack.decode.Compress;
-import com.github.junrar.unpack.vm.BitInput;
-
-
-/**
- * DOCUMENT ME
- *
- * @author $LastChangedBy$
- * @version $LastChangedRevision$
- */
-public abstract class Unpack15 extends BitInput
-{
-
- protected int readBorder;
-
- protected boolean suspended;
-
- protected boolean unpAllBuf;
-
- protected ComprDataIO unpIO;
-
- protected boolean unpSomeRead;
-
- protected int readTop;
-
- protected long destUnpSize;
-
- protected byte[] window;
-
- protected int[] oldDist = new int[4];
-
- protected int unpPtr, wrPtr;
-
- protected int oldDistPtr;
-
- protected int[] ChSet = new int[256], ChSetA = new int[256],
- ChSetB = new int[256], ChSetC = new int[256];
-
- protected int[] Place = new int[256], PlaceA = new int[256],
- PlaceB = new int[256], PlaceC = new int[256];
-
- protected int[] NToPl = new int[256], NToPlB = new int[256],
- NToPlC = new int[256];
-
- protected int FlagBuf, AvrPlc, AvrPlcB, AvrLn1, AvrLn2, AvrLn3;
-
- protected int Buf60, NumHuf, StMode, LCount, FlagsCnt;
-
- protected int Nhfb, Nlzb, MaxDist3;
-
- protected int lastDist, lastLength;
-
- private static final int STARTL1 = 2;
-
- private static int DecL1[] = { 0x8000, 0xa000, 0xc000, 0xd000, 0xe000,
- 0xea00, 0xee00, 0xf000, 0xf200, 0xf200, 0xffff };
-
- private static int PosL1[] = { 0, 0, 0, 2, 3, 5, 7, 11, 16, 20, 24, 32, 32 };
-
- private static final int STARTL2 = 3;
-
- private static int DecL2[] = { 0xa000, 0xc000, 0xd000, 0xe000, 0xea00,
- 0xee00, 0xf000, 0xf200, 0xf240, 0xffff };
-
- private static int PosL2[] = { 0, 0, 0, 0, 5, 7, 9, 13, 18, 22, 26, 34, 36 };
-
- private static final int STARTHF0 = 4;
-
- private static int DecHf0[] = { 0x8000, 0xc000, 0xe000, 0xf200, 0xf200,
- 0xf200, 0xf200, 0xf200, 0xffff };
-
- private static int PosHf0[] = { 0, 0, 0, 0, 0, 8, 16, 24, 33, 33, 33, 33,
- 33 };
-
- private static final int STARTHF1 = 5;
-
- private static int DecHf1[] = { 0x2000, 0xc000, 0xe000, 0xf000, 0xf200,
- 0xf200, 0xf7e0, 0xffff };
-
- private static int PosHf1[] = { 0, 0, 0, 0, 0, 0, 4, 44, 60, 76, 80, 80,
- 127 };
-
- private static final int STARTHF2 = 5;
-
- private static int DecHf2[] = { 0x1000, 0x2400, 0x8000, 0xc000, 0xfa00,
- 0xffff, 0xffff, 0xffff };
-
- private static int PosHf2[] = { 0, 0, 0, 0, 0, 0, 2, 7, 53, 117, 233, 0, 0 };
-
- private static final int STARTHF3 = 6;
-
- private static int DecHf3[] = { 0x800, 0x2400, 0xee00, 0xfe80, 0xffff,
- 0xffff, 0xffff };
-
- private static int PosHf3[] = { 0, 0, 0, 0, 0, 0, 0, 2, 16, 218, 251, 0, 0 };
-
- private static final int STARTHF4 = 8;
-
- private static int DecHf4[] = { 0xff00, 0xffff, 0xffff, 0xffff, 0xffff,
- 0xffff };
-
- private static int PosHf4[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 0, 0, 0 };
-
- static int ShortLen1[] = { 1, 3, 4, 4, 5, 6, 7, 8, 8, 4, 4, 5, 6, 6, 4, 0 };
-
- static int ShortXor1[] = { 0, 0xa0, 0xd0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe,
- 0xff, 0xc0, 0x80, 0x90, 0x98, 0x9c, 0xb0 };
-
- static int ShortLen2[] = { 2, 3, 3, 3, 4, 4, 5, 6, 6, 4, 4, 5, 6, 6, 4, 0 };
-
- static int ShortXor2[] = { 0, 0x40, 0x60, 0xa0, 0xd0, 0xe0, 0xf0, 0xf8,
- 0xfc, 0xc0, 0x80, 0x90, 0x98, 0x9c, 0xb0 };
-
- protected abstract void unpInitData(boolean solid);
-
- protected void unpack15(boolean solid) throws IOException, RarException
- {
- if (suspended) {
- unpPtr = wrPtr;
- } else {
- unpInitData(solid);
- oldUnpInitData(solid);
- unpReadBuf();
- if (!solid) {
- initHuff();
- unpPtr = 0;
- } else {
- unpPtr = wrPtr;
- }
- --destUnpSize;
- }
- if (destUnpSize >= 0) {
- getFlagsBuf();
- FlagsCnt = 8;
- }
-
- while (destUnpSize >= 0) {
- unpPtr &= Compress.MAXWINMASK;
-
- if (inAddr > readTop - 30 && !unpReadBuf()) {
- break;
- }
- if (((wrPtr - unpPtr) & Compress.MAXWINMASK) < 270
- && wrPtr != unpPtr) {
- oldUnpWriteBuf();
- if (suspended) {
- return;
- }
- }
- if (StMode != 0) {
- huffDecode();
- continue;
- }
-
- if (--FlagsCnt < 0) {
- getFlagsBuf();
- FlagsCnt = 7;
- }
-
- if ((FlagBuf & 0x80) != 0) {
- FlagBuf <<= 1;
- if (Nlzb > Nhfb) {
- longLZ();
- } else {
- huffDecode();
- }
- } else {
- FlagBuf <<= 1;
- if (--FlagsCnt < 0) {
- getFlagsBuf();
- FlagsCnt = 7;
- }
- if ((FlagBuf & 0x80) != 0) {
- FlagBuf <<= 1;
- if (Nlzb > Nhfb) {
- huffDecode();
- } else {
- longLZ();
- }
- } else {
- FlagBuf <<= 1;
- shortLZ();
- }
- }
- }
- oldUnpWriteBuf();
- }
-
-
-
- protected boolean unpReadBuf() throws IOException, RarException
- {
- int dataSize=readTop-inAddr;
- if (dataSize<0){
- return(false);
- }
- if (inAddr>BitInput.MAX_SIZE/2) {
- if (dataSize>0){
- //memmove(InBuf,InBuf+InAddr,DataSize);
-// for (int i = 0; i < dataSize; i++) {
-// inBuf[i] = inBuf[inAddr + i];
-// }
- System.arraycopy(inBuf, inAddr, inBuf, 0, dataSize);
- }
- inAddr=0;
- readTop=dataSize;
- }
- else{
- dataSize=readTop;
- }
- //int readCode=UnpIO->UnpRead(InBuf+DataSize,(BitInput::MAX_SIZE-DataSize)&~0xf);
- int readCode=unpIO.unpRead(inBuf, dataSize, (BitInput.MAX_SIZE-dataSize)&~0xf);
- if (readCode>0){
- readTop+=readCode;
- }
- readBorder=readTop-30;
- return(readCode!=-1);
- }
-
- private int getShortLen1(int pos)
- {
- return pos == 1 ? Buf60 + 3 : ShortLen1[pos];
- }
-
- private int getShortLen2(int pos)
- {
- return pos == 3 ? Buf60 + 3 : ShortLen2[pos];
- }
-
- protected void shortLZ()
- {
- int Length, SaveLength;
- int LastDistance;
- int Distance;
- int DistancePlace;
- NumHuf = 0;
-
- int BitField = fgetbits();
- if (LCount == 2) {
- faddbits(1);
- if (BitField >= 0x8000) {
- oldCopyString(lastDist, lastLength);
- return;
- }
- BitField <<= 1;
- LCount = 0;
- }
- BitField >>>= 8;
- if (AvrLn1 < 37) {
- for (Length = 0;; Length++) {
- if (((BitField ^ ShortXor1[Length]) & (~(0xff >>> getShortLen1(Length)))) == 0) {
- break;
- }
- }
- faddbits(getShortLen1(Length));
- } else {
- for (Length = 0;; Length++) {
- if (((BitField ^ ShortXor2[Length]) & (~(0xff >> getShortLen2(Length)))) == 0) {
- break;
- }
- }
- faddbits(getShortLen2(Length));
- }
-
- if (Length >= 9) {
- if (Length == 9) {
- LCount++;
- oldCopyString(lastDist, lastLength);
- return;
- }
- if (Length == 14) {
- LCount = 0;
- Length = decodeNum(fgetbits(), STARTL2, DecL2, PosL2) + 5;
- Distance = (fgetbits() >> 1) | 0x8000;
- faddbits(15);
- lastLength = Length;
- lastDist = Distance;
- oldCopyString(Distance, Length);
- return;
- }
-
- LCount = 0;
- SaveLength = Length;
- Distance = oldDist[(oldDistPtr - (Length - 9)) & 3];
- Length = decodeNum(fgetbits(), STARTL1, DecL1, PosL1) + 2;
- if (Length == 0x101 && SaveLength == 10) {
- Buf60 ^= 1;
- return;
- }
- if (Distance > 256)
- Length++;
- if (Distance >= MaxDist3)
- Length++;
-
- oldDist[oldDistPtr++] = Distance;
- oldDistPtr = oldDistPtr & 3;
- lastLength = Length;
- lastDist = Distance;
- oldCopyString(Distance, Length);
- return;
- }
-
- LCount = 0;
- AvrLn1 += Length;
- AvrLn1 -= AvrLn1 >> 4;
-
- DistancePlace = decodeNum(fgetbits(), STARTHF2, DecHf2, PosHf2) & 0xff;
- Distance = ChSetA[DistancePlace];
- if (--DistancePlace != -1) {
- PlaceA[Distance]--;
- LastDistance = ChSetA[DistancePlace];
- PlaceA[LastDistance]++;
- ChSetA[DistancePlace + 1] = LastDistance;
- ChSetA[DistancePlace] = Distance;
- }
- Length += 2;
- oldDist[oldDistPtr++] = ++Distance;
- oldDistPtr = oldDistPtr & 3;
- lastLength = Length;
- lastDist = Distance;
- oldCopyString(Distance, Length);
- }
-
- protected void longLZ()
- {
- int Length;
- int Distance;
- int DistancePlace, NewDistancePlace;
- int OldAvr2, OldAvr3;
-
- NumHuf = 0;
- Nlzb += 16;
- if (Nlzb > 0xff) {
- Nlzb = 0x90;
- Nhfb >>>= 1;
- }
- OldAvr2 = AvrLn2;
-
- int BitField = fgetbits();
- if (AvrLn2 >= 122) {
- Length = decodeNum(BitField, STARTL2, DecL2, PosL2);
- } else {
- if (AvrLn2 >= 64) {
- Length = decodeNum(BitField, STARTL1, DecL1, PosL1);
- } else {
- if (BitField < 0x100) {
- Length = BitField;
- faddbits(16);
- } else {
- for (Length = 0; ((BitField << Length) & 0x8000) == 0; Length++) {
- ;
- }
- faddbits(Length + 1);
- }
- }
- }
- AvrLn2 += Length;
- AvrLn2 -= AvrLn2 >>> 5;
-
- BitField = fgetbits();
- if (AvrPlcB > 0x28ff) {
- DistancePlace = decodeNum(BitField, STARTHF2, DecHf2, PosHf2);
- } else {
- if (AvrPlcB > 0x6ff) {
- DistancePlace = decodeNum(BitField, STARTHF1, DecHf1, PosHf1);
- } else {
- DistancePlace = decodeNum(BitField, STARTHF0, DecHf0, PosHf0);
- }
- }
- AvrPlcB += DistancePlace;
- AvrPlcB -= AvrPlcB >> 8;
- while (true) {
- Distance = ChSetB[DistancePlace & 0xff];
- NewDistancePlace = NToPlB[Distance++ & 0xff]++;
- if ((Distance & 0xff) == 0) {
- corrHuff(ChSetB, NToPlB);
- } else {
- break;
- }
- }
-
- ChSetB[DistancePlace] = ChSetB[NewDistancePlace];
- ChSetB[NewDistancePlace] = Distance;
-
- Distance = ((Distance & 0xff00) | (fgetbits() >>> 8)) >>> 1;
- faddbits(7);
-
- OldAvr3 = AvrLn3;
- if (Length != 1 && Length != 4) {
- if (Length == 0 && Distance <= MaxDist3) {
- AvrLn3++;
- AvrLn3 -= AvrLn3 >> 8;
- } else {
- if (AvrLn3 > 0) {
- AvrLn3--;
- }
- }
- }
- Length += 3;
- if (Distance >= MaxDist3) {
- Length++;
- }
- if (Distance <= 256) {
- Length += 8;
- }
- if (OldAvr3 > 0xb0 || AvrPlc >= 0x2a00 && OldAvr2 < 0x40) {
- MaxDist3 = 0x7f00;
- } else {
- MaxDist3 = 0x2001;
- }
- oldDist[oldDistPtr++] = Distance;
- oldDistPtr = oldDistPtr & 3;
- lastLength = Length;
- lastDist = Distance;
- oldCopyString(Distance, Length);
- }
-
- protected void huffDecode()
- {
- int CurByte, NewBytePlace;
- int Length;
- int Distance;
- int BytePlace;
-
- int BitField = fgetbits();
-
- if (AvrPlc > 0x75ff) {
- BytePlace = decodeNum(BitField, STARTHF4, DecHf4, PosHf4);
- } else {
- if (AvrPlc > 0x5dff) {
- BytePlace = decodeNum(BitField, STARTHF3, DecHf3, PosHf3);
- } else {
- if (AvrPlc > 0x35ff) {
- BytePlace = decodeNum(BitField, STARTHF2, DecHf2, PosHf2);
- } else {
- if (AvrPlc > 0x0dff) {
- BytePlace = decodeNum(BitField, STARTHF1, DecHf1,
- PosHf1);
- } else {
- BytePlace = decodeNum(BitField, STARTHF0, DecHf0,
- PosHf0);
- }
- }
- }
- }
- BytePlace &= 0xff;
- if (StMode != 0) {
- if (BytePlace == 0 && BitField > 0xfff) {
- BytePlace = 0x100;
- }
- if (--BytePlace == -1) {
- BitField = fgetbits();
- faddbits(1);
- if ((BitField & 0x8000) != 0) {
- NumHuf = StMode = 0;
- return;
- } else {
- Length = (BitField & 0x4000) != 0 ? 4 : 3;
- faddbits(1);
- Distance = decodeNum(fgetbits(), STARTHF2, DecHf2, PosHf2);
- Distance = (Distance << 5) | (fgetbits() >>> 11);
- faddbits(5);
- oldCopyString(Distance, Length);
- return;
- }
- }
- } else {
- if (NumHuf++ >= 16 && FlagsCnt == 0) {
- StMode = 1;
- }
- }
- AvrPlc += BytePlace;
- AvrPlc -= AvrPlc >>> 8;
- Nhfb += 16;
- if (Nhfb > 0xff) {
- Nhfb = 0x90;
- Nlzb >>>= 1;
- }
-
- window[unpPtr++] = (byte) (ChSet[BytePlace] >>> 8);
- --destUnpSize;
-
- while (true) {
- CurByte = ChSet[BytePlace];
- NewBytePlace = NToPl[CurByte++ & 0xff]++;
- if ((CurByte & 0xff) > 0xa1) {
- corrHuff(ChSet, NToPl);
- } else {
- break;
- }
- }
-
- ChSet[BytePlace] = ChSet[NewBytePlace];
- ChSet[NewBytePlace] = CurByte;
- }
-
- protected void getFlagsBuf()
- {
- int Flags, NewFlagsPlace;
- int FlagsPlace = decodeNum(fgetbits(), STARTHF2, DecHf2, PosHf2);
-
- while (true) {
- Flags = ChSetC[FlagsPlace];
- FlagBuf = Flags >>> 8;
- NewFlagsPlace = NToPlC[Flags++ & 0xff]++;
- if ((Flags & 0xff) != 0) {
- break;
- }
- corrHuff(ChSetC, NToPlC);
- }
-
- ChSetC[FlagsPlace] = ChSetC[NewFlagsPlace];
- ChSetC[NewFlagsPlace] = Flags;
- }
-
- protected void oldUnpInitData(boolean Solid)
- {
- if (!Solid ) {
- AvrPlcB = AvrLn1 = AvrLn2 = AvrLn3 = NumHuf = Buf60 = 0;
- AvrPlc = 0x3500;
- MaxDist3 = 0x2001;
- Nhfb = Nlzb = 0x80;
- }
- FlagsCnt = 0;
- FlagBuf = 0;
- StMode = 0;
- LCount = 0;
- readTop = 0;
- }
-
- protected void initHuff()
- {
- for (int I = 0; I < 256; I++) {
- Place[I] = PlaceA[I] = PlaceB[I] = I;
- PlaceC[I] = (~I + 1) & 0xff;
- ChSet[I] = ChSetB[I] = I << 8;
- ChSetA[I] = I;
- ChSetC[I] = ((~I + 1) & 0xff) << 8;
- }
-
- Arrays.fill(NToPl, 0);// memset(NToPl,0,sizeof(NToPl));
- Arrays.fill(NToPlB, 0); // memset(NToPlB,0,sizeof(NToPlB));
- Arrays.fill(NToPlC, 0); // memset(NToPlC,0,sizeof(NToPlC));
- corrHuff(ChSetB, NToPlB);
- }
-
- protected void corrHuff(int[] CharSet, int[] NumToPlace)
- {
- int I, J, pos = 0;
- for (I = 7; I >= 0; I--) {
- for (J = 0; J < 32; J++, pos++) {
- CharSet[pos] = ((CharSet[pos] & ~0xff) | I);// *CharSet=(*CharSet
- // & ~0xff) | I;
- }
- }
- Arrays.fill(NumToPlace, 0);// memset(NumToPlace,0,sizeof(NToPl));
- for (I = 6; I >= 0; I--) {
- NumToPlace[I] = (7 - I) * 32;
- }
- }
-
- protected void oldCopyString(int Distance, int Length)
- {
- destUnpSize -= Length;
- while ((Length--) != 0) {
- window[unpPtr] = window[(unpPtr - Distance) & Compress.MAXWINMASK];
- unpPtr = (unpPtr + 1) & Compress.MAXWINMASK;
- }
- }
-
- protected int decodeNum(int Num, int StartPos, int[] DecTab, int[] PosTab)
- {
- int I;
- for (Num &= 0xfff0, I = 0; DecTab[I] <= Num; I++) {
- StartPos++;
- }
- faddbits(StartPos);
- return (((Num - (I != 0 ? DecTab[I - 1] : 0)) >>> (16 - StartPos)) + PosTab[StartPos]);
- }
-
- protected void oldUnpWriteBuf() throws IOException
- {
- if (unpPtr != wrPtr) {
- unpSomeRead = true;
- }
- if (unpPtr < wrPtr) {
- unpIO.unpWrite(window, wrPtr, -wrPtr & Compress.MAXWINMASK);
- unpIO.unpWrite(window, 0, unpPtr);
- unpAllBuf = true;
- } else {
- unpIO.unpWrite(window, wrPtr, unpPtr - wrPtr);
- }
- wrPtr = unpPtr;
- }
-
-
-}
|