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Make Jikes less upset 

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@278185 13f79535-47bb-0310-9956-ffa450edef68
master
Stefan Bodewig 20 years ago
parent
84c1b5f037
commit
e98db2e511
3 changed files with 315 additions and 315 deletions
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  1. +115
    -115
      src/main/org/apache/tools/bzip2/CBZip2InputStream.java
  2. +196
    -196
      src/main/org/apache/tools/bzip2/CBZip2OutputStream.java
  3. +4
    -4
      src/main/org/apache/tools/bzip2/CRC.java

+ 115
- 115
src/main/org/apache/tools/bzip2/CBZip2InputStream.java View File

@@ -56,14 +56,14 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
final boolean[] inUse = this.data.inUse; final boolean[] inUse = this.data.inUse;
final byte[] seqToUnseq = this.data.seqToUnseq; final byte[] seqToUnseq = this.data.seqToUnseq;


int nInUse = 0;
int nInUseShadow = 0;


for (int i = 0; i < 256; i++) { for (int i = 0; i < 256; i++) {
if (inUse[i]) if (inUse[i])
seqToUnseq[nInUse++] = (byte) i;
seqToUnseq[nInUseShadow++] = (byte) i;
} }


this.nInUse = nInUse;
this.nInUse = nInUseShadow;
} }


/** /**
@@ -317,11 +317,11 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
} }


public void close() throws IOException { public void close() throws IOException {
InputStream in = this.in;
if (in != null) {
InputStream inShadow = this.in;
if (inShadow != null) {
try { try {
if (in != System.in) {
in.close();
if (inShadow != System.in) {
inShadow.close();
} }
} finally { } finally {
this.data = null; this.data = null;
@@ -331,47 +331,47 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
} }


private int bsR(final int n) throws IOException { private int bsR(final int n) throws IOException {
int bsLive = this.bsLive;
int bsBuff = this.bsBuff;
int bsLiveShadow = this.bsLive;
int bsBuffShadow = this.bsBuff;


if (bsLive < n) {
final InputStream in = this.in;
if (bsLiveShadow < n) {
final InputStream inShadow = this.in;
do { do {
int thech = in.read();
int thech = inShadow.read();


if (thech < 0) { if (thech < 0) {
throw new IOException("unexpected end of stream"); throw new IOException("unexpected end of stream");
} }


bsBuff = (bsBuff << 8) | thech;
bsLive += 8;
} while (bsLive < n);
bsBuffShadow = (bsBuffShadow << 8) | thech;
bsLiveShadow += 8;
} while (bsLiveShadow < n);


this.bsBuff = bsBuff;
this.bsBuff = bsBuffShadow;
} }


this.bsLive = bsLive - n;
return (bsBuff >> (bsLive - n)) & ((1 << n) - 1);
this.bsLive = bsLiveShadow - n;
return (bsBuffShadow >> (bsLiveShadow - n)) & ((1 << n) - 1);
} }


private boolean bsGetBit() throws IOException { private boolean bsGetBit() throws IOException {
int bsLive = this.bsLive;
int bsBuff = this.bsBuff;
int bsLiveShadow = this.bsLive;
int bsBuffShadow = this.bsBuff;


if (bsLive < 1) {
if (bsLiveShadow < 1) {
int thech = this.in.read(); int thech = this.in.read();


if (thech < 0) { if (thech < 0) {
throw new IOException("unexpected end of stream"); throw new IOException("unexpected end of stream");
} }


bsBuff = (bsBuff << 8) | thech;
bsLive += 8;
this.bsBuff = bsBuff;
bsBuffShadow = (bsBuffShadow << 8) | thech;
bsLiveShadow += 8;
this.bsBuff = bsBuffShadow;
} }


this.bsLive = bsLive - 1;
return ((bsBuff >> (bsLive - 1)) & 1) != 0;
this.bsLive = bsLiveShadow - 1;
return ((bsBuffShadow >> (bsLiveShadow - 1)) & 1) != 0;
} }


private char bsGetUByte() throws IOException { private char bsGetUByte() throws IOException {
@@ -428,11 +428,11 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
} }


private void recvDecodingTables() throws IOException { private void recvDecodingTables() throws IOException {
final Data data = this.data;
final boolean[] inUse = data.inUse;
final byte[] pos = data.recvDecodingTables_pos;
final byte[] selector = data.selector;
final byte[] selectorMtf = data.selectorMtf;
final Data dataShadow = this.data;
final boolean[] inUse = dataShadow.inUse;
final byte[] pos = dataShadow.recvDecodingTables_pos;
final byte[] selector = dataShadow.selector;
final byte[] selectorMtf = dataShadow.selectorMtf;


int inUse16 = 0; int inUse16 = 0;


@@ -490,7 +490,7 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
selector[i] = tmp; selector[i] = tmp;
} }


final char[][] len = data.temp_charArray2d;
final char[][] len = dataShadow.temp_charArray2d;


/* Now the coding tables */ /* Now the coding tables */
for (int t = 0; t < nGroups; t++) { for (int t = 0; t < nGroups; t++) {
@@ -513,12 +513,12 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
*/ */
private void createHuffmanDecodingTables(final int alphaSize, private void createHuffmanDecodingTables(final int alphaSize,
final int nGroups) { final int nGroups) {
final Data data = this.data;
final char[][] len = data.temp_charArray2d;
final int[] minLens = data.minLens;
final int[][] limit = data.limit;
final int[][] base = data.base;
final int[][] perm = data.perm;
final Data dataShadow = this.data;
final char[][] len = dataShadow.temp_charArray2d;
final int[] minLens = dataShadow.minLens;
final int[][] limit = dataShadow.limit;
final int[][] base = dataShadow.base;
final int[][] perm = dataShadow.perm;


for (int t = 0; t < nGroups; t++) { for (int t = 0; t < nGroups; t++) {
int minLen = 32; int minLen = 32;
@@ -543,17 +543,17 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
this.origPtr = bsR(24); this.origPtr = bsR(24);
recvDecodingTables(); recvDecodingTables();


final InputStream in = this.in;
final Data data = this.data;
final byte[] ll8 = data.ll8;
final int[] unzftab = data.unzftab;
final byte[] selector = data.selector;
final byte[] seqToUnseq = data.seqToUnseq;
final char[] yy = data.getAndMoveToFrontDecode_yy;
final int[] minLens = data.minLens;
final int[][] limit = data.limit;
final int[][] base = data.base;
final int[][] perm = data.perm;
final InputStream inShadow = this.in;
final Data dataShadow = this.data;
final byte[] ll8 = dataShadow.ll8;
final int[] unzftab = dataShadow.unzftab;
final byte[] selector = dataShadow.selector;
final byte[] seqToUnseq = dataShadow.seqToUnseq;
final char[] yy = dataShadow.getAndMoveToFrontDecode_yy;
final int[] minLens = dataShadow.minLens;
final int[][] limit = dataShadow.limit;
final int[][] base = dataShadow.base;
final int[][] perm = dataShadow.perm;
final int limitLast = this.blockSize100k * 100000; final int limitLast = this.blockSize100k * 100000;


/* /*
@@ -571,9 +571,9 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
int groupPos = G_SIZE - 1; int groupPos = G_SIZE - 1;
final int eob = this.nInUse + 1; final int eob = this.nInUse + 1;
int nextSym = getAndMoveToFrontDecode0(0); int nextSym = getAndMoveToFrontDecode0(0);
int bsBuff = this.bsBuff;
int bsLive = this.bsLive;
int last = -1;
int bsBuffShadow = this.bsBuff;
int bsLiveShadow = this.bsLive;
int lastShadow = -1;
int zt = selector[groupNo] & 0xff; int zt = selector[groupNo] & 0xff;
int[] base_zt = base[zt]; int[] base_zt = base[zt];
int[] limit_zt = limit[zt]; int[] limit_zt = limit[zt];
@@ -608,33 +608,33 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {


// Inlined: // Inlined:
// int zvec = bsR(zn); // int zvec = bsR(zn);
while (bsLive < zn) {
final int thech = in.read();
while (bsLiveShadow < zn) {
final int thech = inShadow.read();
if (thech >= 0) { if (thech >= 0) {
bsBuff = (bsBuff << 8) | thech;
bsLive += 8;
bsBuffShadow = (bsBuffShadow << 8) | thech;
bsLiveShadow += 8;
continue; continue;
} else { } else {
throw new IOException("unexpected end of stream"); throw new IOException("unexpected end of stream");
} }
} }
int zvec = (bsBuff >> (bsLive - zn)) & ((1 << zn) - 1);
bsLive -= zn;
int zvec = (bsBuffShadow >> (bsLiveShadow - zn)) & ((1 << zn) - 1);
bsLiveShadow -= zn;


while (zvec > limit_zt[zn]) { while (zvec > limit_zt[zn]) {
zn++; zn++;
while (bsLive < 1) {
final int thech = in.read();
while (bsLiveShadow < 1) {
final int thech = inShadow.read();
if (thech >= 0) { if (thech >= 0) {
bsBuff = (bsBuff << 8) | thech;
bsLive += 8;
bsBuffShadow = (bsBuffShadow << 8) | thech;
bsLiveShadow += 8;
continue; continue;
} else { } else {
throw new IOException("unexpected end of stream"); throw new IOException("unexpected end of stream");
} }
} }
bsLive--;
zvec = (zvec << 1) | ((bsBuff >> bsLive) & 1);
bsLiveShadow--;
zvec = (zvec << 1) | ((bsBuffShadow >> bsLiveShadow) & 1);
} }
nextSym = perm_zt[zvec - base_zt[zn]]; nextSym = perm_zt[zvec - base_zt[zn]];
} }
@@ -643,20 +643,20 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
unzftab[ch & 0xff] += s + 1; unzftab[ch & 0xff] += s + 1;


while (s-- >= 0) { while (s-- >= 0) {
ll8[++last] = ch;
ll8[++lastShadow] = ch;
} }


if (last >= limitLast) {
if (lastShadow >= limitLast) {
throw new IOException("block overrun"); throw new IOException("block overrun");
} }
} else { } else {
if (++last >= limitLast) {
if (++lastShadow >= limitLast) {
throw new IOException("block overrun"); throw new IOException("block overrun");
} }


final char tmp = yy[nextSym - 1]; final char tmp = yy[nextSym - 1];
unzftab[seqToUnseq[tmp] & 0xff]++; unzftab[seqToUnseq[tmp] & 0xff]++;
ll8[last] = seqToUnseq[tmp];
ll8[lastShadow] = seqToUnseq[tmp];


/* /*
This loop is hammered during decompression, This loop is hammered during decompression,
@@ -688,75 +688,75 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {


// Inlined: // Inlined:
// int zvec = bsR(zn); // int zvec = bsR(zn);
while (bsLive < zn) {
final int thech = in.read();
while (bsLiveShadow < zn) {
final int thech = inShadow.read();
if (thech >= 0) { if (thech >= 0) {
bsBuff = (bsBuff << 8) | thech;
bsLive += 8;
bsBuffShadow = (bsBuffShadow << 8) | thech;
bsLiveShadow += 8;
continue; continue;
} else { } else {
throw new IOException("unexpected end of stream"); throw new IOException("unexpected end of stream");
} }
} }
int zvec = (bsBuff >> (bsLive - zn)) & ((1 << zn) - 1);
bsLive -= zn;
int zvec = (bsBuffShadow >> (bsLiveShadow - zn)) & ((1 << zn) - 1);
bsLiveShadow -= zn;


while (zvec > limit_zt[zn]) { while (zvec > limit_zt[zn]) {
zn++; zn++;
while (bsLive < 1) {
final int thech = in.read();
while (bsLiveShadow < 1) {
final int thech = inShadow.read();
if (thech >= 0) { if (thech >= 0) {
bsBuff = (bsBuff << 8) | thech;
bsLive += 8;
bsBuffShadow = (bsBuffShadow << 8) | thech;
bsLiveShadow += 8;
continue; continue;
} else { } else {
throw new IOException("unexpected end of stream"); throw new IOException("unexpected end of stream");
} }
} }
bsLive--;
zvec = (zvec << 1) | ((bsBuff >> bsLive) & 1);
bsLiveShadow--;
zvec = (zvec << 1) | ((bsBuffShadow >> bsLiveShadow) & 1);
} }
nextSym = perm_zt[zvec - base_zt[zn]]; nextSym = perm_zt[zvec - base_zt[zn]];
} }
} }


this.last = last;
this.bsLive = bsLive;
this.bsBuff = bsBuff;
this.last = lastShadow;
this.bsLive = bsLiveShadow;
this.bsBuff = bsBuffShadow;
} }


private int getAndMoveToFrontDecode0(final int groupNo) private int getAndMoveToFrontDecode0(final int groupNo)
throws IOException { throws IOException {
final InputStream in = this.in;
final Data data = this.data;
final int zt = data.selector[groupNo] & 0xff;
final int[] limit_zt = data.limit[zt];
int zn = data.minLens[zt];
final InputStream inShadow = this.in;
final Data dataShadow = this.data;
final int zt = dataShadow.selector[groupNo] & 0xff;
final int[] limit_zt = dataShadow.limit[zt];
int zn = dataShadow.minLens[zt];
int zvec = bsR(zn); int zvec = bsR(zn);
int bsLive = this.bsLive;
int bsBuff = this.bsBuff;
int bsLiveShadow = this.bsLive;
int bsBuffShadow = this.bsBuff;


while (zvec > limit_zt[zn]) { while (zvec > limit_zt[zn]) {
zn++; zn++;
while (bsLive < 1) {
final int thech = in.read();
while (bsLiveShadow < 1) {
final int thech = inShadow.read();


if (thech >= 0) { if (thech >= 0) {
bsBuff = (bsBuff << 8) | thech;
bsLive += 8;
bsBuffShadow = (bsBuffShadow << 8) | thech;
bsLiveShadow += 8;
continue; continue;
} else { } else {
throw new IOException("unexpected end of stream"); throw new IOException("unexpected end of stream");
} }
} }
bsLive--;
zvec = (zvec << 1) | ((bsBuff >> bsLive) & 1);
bsLiveShadow--;
zvec = (zvec << 1) | ((bsBuffShadow >> bsLiveShadow) & 1);
} }


this.bsLive = bsLive;
this.bsBuff = bsBuff;
this.bsLive = bsLiveShadow;
this.bsBuff = bsBuffShadow;


return data.perm[zt][zvec - data.base[zt][zn]];
return dataShadow.perm[zt][zvec - dataShadow.base[zt][zn]];
} }


private void setupBlock() throws IOException { private void setupBlock() throws IOException {
@@ -775,7 +775,7 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
cftab[i] = c; cftab[i] = c;
} }


for (int i = 0, last = this.last; i <= last; i++) {
for (int i = 0, lastShadow = this.last; i <= lastShadow; i++) {
tt[cftab[ll8[i] & 0xff]++] = i; tt[cftab[ll8[i] & 0xff]++] = i;
} }


@@ -800,7 +800,7 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
private void setupRandPartA() throws IOException { private void setupRandPartA() throws IOException {
if (this.su_i2 <= this.last) { if (this.su_i2 <= this.last) {
this.su_chPrev = this.su_ch2; this.su_chPrev = this.su_ch2;
int su_ch2 = this.data.ll8[this.su_tPos] & 0xff;
int su_ch2Shadow = this.data.ll8[this.su_tPos] & 0xff;
this.su_tPos = this.data.tt[this.su_tPos]; this.su_tPos = this.data.tt[this.su_tPos];
if (this.su_rNToGo == 0) { if (this.su_rNToGo == 0) {
this.su_rNToGo = BZip2Constants.rNums[this.su_rTPos] - 1; this.su_rNToGo = BZip2Constants.rNums[this.su_rTPos] - 1;
@@ -810,11 +810,11 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
} else { } else {
this.su_rNToGo--; this.su_rNToGo--;
} }
this.su_ch2 = su_ch2 ^= (this.su_rNToGo == 1) ? 1 : 0;
this.su_ch2 = su_ch2Shadow ^= (this.su_rNToGo == 1) ? 1 : 0;
this.su_i2++; this.su_i2++;
this.currentChar = su_ch2;
this.currentChar = su_ch2Shadow;
this.currentState = RAND_PART_B_STATE; this.currentState = RAND_PART_B_STATE;
this.crc.updateCRC(su_ch2);
this.crc.updateCRC(su_ch2Shadow);
} else { } else {
endBlock(); endBlock();
initBlock(); initBlock();
@@ -825,13 +825,13 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
private void setupNoRandPartA() throws IOException { private void setupNoRandPartA() throws IOException {
if (this.su_i2 <= this.last) { if (this.su_i2 <= this.last) {
this.su_chPrev = this.su_ch2; this.su_chPrev = this.su_ch2;
int su_ch2 = this.data.ll8[this.su_tPos] & 0xff;
this.su_ch2 = su_ch2;
int su_ch2Shadow = this.data.ll8[this.su_tPos] & 0xff;
this.su_ch2 = su_ch2Shadow;
this.su_tPos = this.data.tt[this.su_tPos]; this.su_tPos = this.data.tt[this.su_tPos];
this.su_i2++; this.su_i2++;
this.currentChar = su_ch2;
this.currentChar = su_ch2Shadow;
this.currentState = NO_RAND_PART_B_STATE; this.currentState = NO_RAND_PART_B_STATE;
this.crc.updateCRC(su_ch2);
this.crc.updateCRC(su_ch2Shadow);
} else { } else {
this.currentState = NO_RAND_PART_A_STATE; this.currentState = NO_RAND_PART_A_STATE;
endBlock(); endBlock();
@@ -897,9 +897,9 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {


private void setupNoRandPartC() throws IOException { private void setupNoRandPartC() throws IOException {
if (this.su_j2 < this.su_z) { if (this.su_j2 < this.su_z) {
int su_ch2 = this.su_ch2;
this.currentChar = su_ch2;
this.crc.updateCRC(su_ch2);
int su_ch2Shadow = this.su_ch2;
this.currentChar = su_ch2Shadow;
this.crc.updateCRC(su_ch2Shadow);
this.su_j2++; this.su_j2++;
this.currentState = NO_RAND_PART_C_STATE; this.currentState = NO_RAND_PART_C_STATE;
} else { } else {
@@ -957,17 +957,17 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants {
* files. * files.
*/ */
final int[] initTT(int length) { final int[] initTT(int length) {
int[] tt = this.tt;
int[] ttShadow = this.tt;


// tt.length should always be >= length, but theoretically // tt.length should always be >= length, but theoretically
// it can happen, if the compressor mixed small and large // it can happen, if the compressor mixed small and large
// blocks. Normally only the last block will be smaller // blocks. Normally only the last block will be smaller
// than others. // than others.
if ((tt == null) || (tt.length < length)) {
this.tt = tt = new int[length];
if ((ttShadow == null) || (ttShadow.length < length)) {
this.tt = ttShadow = new int[length];
} }


return tt;
return ttShadow;
} }


} }


+ 196
- 196
src/main/org/apache/tools/bzip2/CBZip2OutputStream.java View File

@@ -652,50 +652,50 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
} }


private void writeRun() throws IOException { private void writeRun() throws IOException {
final int last = this.last;
final int lastShadow = this.last;


if (last < this.allowableBlockSize) {
final int currentChar = this.currentChar;
final Data data = this.data;
data.inUse[currentChar] = true;
final byte ch = (byte) currentChar;
if (lastShadow < this.allowableBlockSize) {
final int currentCharShadow = this.currentChar;
final Data dataShadow = this.data;
dataShadow.inUse[currentCharShadow] = true;
final byte ch = (byte) currentCharShadow;


int runLength = this.runLength;
this.crc.updateCRC(currentChar, runLength);
int runLengthShadow = this.runLength;
this.crc.updateCRC(currentCharShadow, runLengthShadow);


switch (runLength) {
switch (runLengthShadow) {
case 1: case 1:
data.block[last + 2] = ch;
this.last = last + 1;
dataShadow.block[lastShadow + 2] = ch;
this.last = lastShadow + 1;
break; break;


case 2: case 2:
data.block[last + 2] = ch;
data.block[last + 3] = ch;
this.last = last + 2;
dataShadow.block[lastShadow + 2] = ch;
dataShadow.block[lastShadow + 3] = ch;
this.last = lastShadow + 2;
break; break;


case 3: case 3:
{ {
final byte[] block = data.block;
block[last + 2] = ch;
block[last + 3] = ch;
block[last + 4] = ch;
this.last = last + 3;
final byte[] block = dataShadow.block;
block[lastShadow + 2] = ch;
block[lastShadow + 3] = ch;
block[lastShadow + 4] = ch;
this.last = lastShadow + 3;
} }
break; break;


default: default:
{ {
runLength -= 4;
data.inUse[runLength] = true;
final byte[] block = data.block;
block[last + 2] = ch;
block[last + 3] = ch;
block[last + 4] = ch;
block[last + 5] = ch;
block[last + 6] = (byte) runLength;
this.last = last + 5;
runLengthShadow -= 4;
dataShadow.inUse[runLengthShadow] = true;
final byte[] block = dataShadow.block;
block[lastShadow + 2] = ch;
block[lastShadow + 3] = ch;
block[lastShadow + 4] = ch;
block[lastShadow + 5] = ch;
block[lastShadow + 6] = (byte) runLengthShadow;
this.last = lastShadow + 5;
} }
break; break;


@@ -716,8 +716,8 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
} }


public void close() throws IOException { public void close() throws IOException {
OutputStream out = this.out;
if (out != null) {
OutputStream outShadow = this.out;
if (outShadow != null) {
try { try {
if (this.runLength > 0) { if (this.runLength > 0) {
writeRun(); writeRun();
@@ -725,7 +725,7 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
this.currentChar = -1; this.currentChar = -1;
endBlock(); endBlock();
endCompression(); endCompression();
out.close();
outShadow.close();
} finally { } finally {
this.out = null; this.out = null;
this.data = null; this.data = null;
@@ -734,9 +734,9 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
} }


public void flush() throws IOException { public void flush() throws IOException {
OutputStream out = this.out;
if (out != null) {
out.flush();
OutputStream outShadow = this.out;
if (outShadow != null) {
outShadow.flush();
} }
} }


@@ -914,18 +914,18 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
} }


private void bsW(final int n, final int v) throws IOException { private void bsW(final int n, final int v) throws IOException {
final OutputStream out = this.out;
int bsLive = this.bsLive;
int bsBuff = this.bsBuff;
while (bsLive >= 8) {
out.write(bsBuff >> 24); // write 8-bit
bsBuff <<= 8;
bsLive -= 8;
final OutputStream outShadow = this.out;
int bsLiveShadow = this.bsLive;
int bsBuffShadow = this.bsBuff;
while (bsLiveShadow >= 8) {
outShadow.write(bsBuffShadow >> 24); // write 8-bit
bsBuffShadow <<= 8;
bsLiveShadow -= 8;
} }


this.bsBuff = bsBuff | (v << (32 - bsLive - n));
this.bsLive = bsLive + n;
this.bsBuff = bsBuffShadow | (v << (32 - bsLiveShadow - n));
this.bsLive = bsLiveShadow + n;
} }


private void bsPutUByte(final int c) throws IOException { private void bsPutUByte(final int c) throws IOException {
@@ -1024,20 +1024,20 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
} }


private int sendMTFValues1(final int nGroups, final int alphaSize) { private int sendMTFValues1(final int nGroups, final int alphaSize) {
final Data data = this.data;
final int[][] rfreq = data.sendMTFValues_rfreq;
final int[] fave = data.sendMTFValues_fave;
final short[] cost = data.sendMTFValues_cost;
final char[] sfmap = data.sfmap;
final byte[] selector = data.selector;
final byte[][] len = data.sendMTFValues_len;
final Data dataShadow = this.data;
final int[][] rfreq = dataShadow.sendMTFValues_rfreq;
final int[] fave = dataShadow.sendMTFValues_fave;
final short[] cost = dataShadow.sendMTFValues_cost;
final char[] sfmap = dataShadow.sfmap;
final byte[] selector = dataShadow.selector;
final byte[][] len = dataShadow.sendMTFValues_len;
final byte[] len_0 = len[0]; final byte[] len_0 = len[0];
final byte[] len_1 = len[1]; final byte[] len_1 = len[1];
final byte[] len_2 = len[2]; final byte[] len_2 = len[2];
final byte[] len_3 = len[3]; final byte[] len_3 = len[3];
final byte[] len_4 = len[4]; final byte[] len_4 = len[4];
final byte[] len_5 = len[5]; final byte[] len_5 = len[5];
final int nMTF = this.nMTF;
final int nMTFShadow = this.nMTF;


int nSelectors = 0; int nSelectors = 0;


@@ -1060,7 +1060,7 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
by each of the coding tables. by each of the coding tables.
*/ */


final int ge = Math.min(gs + G_SIZE - 1, nMTF - 1);
final int ge = Math.min(gs + G_SIZE - 1, nMTFShadow - 1);


if (nGroups == N_GROUPS) { if (nGroups == N_GROUPS) {
// unrolled version of the else-block // unrolled version of the else-block
@@ -1144,15 +1144,15 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
private void sendMTFValues2(final int nGroups, final int nSelectors) { private void sendMTFValues2(final int nGroups, final int nSelectors) {
// assert (nGroups < 8) : nGroups; // assert (nGroups < 8) : nGroups;


final Data data = this.data;
byte[] pos = data.sendMTFValues2_pos;
final Data dataShadow = this.data;
byte[] pos = dataShadow.sendMTFValues2_pos;


for (int i = nGroups; --i >= 0;) { for (int i = nGroups; --i >= 0;) {
pos[i] = (byte) i; pos[i] = (byte) i;
} }


for (int i = 0; i < nSelectors; i++) { for (int i = 0; i < nSelectors; i++) {
final byte ll_i = data.selector[i];
final byte ll_i = dataShadow.selector[i];
byte tmp = pos[0]; byte tmp = pos[0];
int j = 0; int j = 0;


@@ -1164,7 +1164,7 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
} }


pos[0] = tmp; pos[0] = tmp;
data.selectorMtf[i] = (byte) j;
dataShadow.selectorMtf[i] = (byte) j;
} }
} }


@@ -1211,30 +1211,30 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
bsW(1, inUse16[i] ? 1 : 0); bsW(1, inUse16[i] ? 1 : 0);
} }


final OutputStream out = this.out;
int bsLive = this.bsLive;
int bsBuff = this.bsBuff;
final OutputStream outShadow = this.out;
int bsLiveShadow = this.bsLive;
int bsBuffShadow = this.bsBuff;


for (int i = 0; i < 16; i++) { for (int i = 0; i < 16; i++) {
if (inUse16[i]) { if (inUse16[i]) {
final int i16 = i * 16; final int i16 = i * 16;
for (int j = 0; j < 16; j++) { for (int j = 0; j < 16; j++) {
// inlined: bsW(1, inUse[i16 + j] ? 1 : 0); // inlined: bsW(1, inUse[i16 + j] ? 1 : 0);
while (bsLive >= 8) {
out.write(bsBuff >> 24); // write 8-bit
bsBuff <<= 8;
bsLive -= 8;
while (bsLiveShadow >= 8) {
outShadow.write(bsBuffShadow >> 24); // write 8-bit
bsBuffShadow <<= 8;
bsLiveShadow -= 8;
} }
if (inUse[i16 + j]) { if (inUse[i16 + j]) {
bsBuff |= 1 << (32 - bsLive - 1);
bsBuffShadow |= 1 << (32 - bsLiveShadow - 1);
} }
bsLive++;
bsLiveShadow++;
} }
} }
} }


this.bsBuff = bsBuff;
this.bsLive = bsLive;
this.bsBuff = bsBuffShadow;
this.bsLive = bsLiveShadow;
} }


private void sendMTFValues5(final int nGroups, final int nSelectors) private void sendMTFValues5(final int nGroups, final int nSelectors)
@@ -1242,118 +1242,118 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
bsW(3, nGroups); bsW(3, nGroups);
bsW(15, nSelectors); bsW(15, nSelectors);


final OutputStream out = this.out;
final OutputStream outShadow = this.out;
final byte[] selectorMtf = this.data.selectorMtf; final byte[] selectorMtf = this.data.selectorMtf;


int bsLive = this.bsLive;
int bsBuff = this.bsBuff;
int bsLiveShadow = this.bsLive;
int bsBuffShadow = this.bsBuff;


for (int i = 0; i < nSelectors; i++) { for (int i = 0; i < nSelectors; i++) {
for (int j = 0, hj = selectorMtf[i] & 0xff; j < hj; j++) { for (int j = 0, hj = selectorMtf[i] & 0xff; j < hj; j++) {
// inlined: bsW(1, 1); // inlined: bsW(1, 1);
while (bsLive >= 8) {
out.write(bsBuff >> 24);
bsBuff <<= 8;
bsLive -= 8;
while (bsLiveShadow >= 8) {
outShadow.write(bsBuffShadow >> 24);
bsBuffShadow <<= 8;
bsLiveShadow -= 8;
} }
bsBuff |= 1 << (32 - bsLive - 1);
bsLive++;
bsBuffShadow |= 1 << (32 - bsLiveShadow - 1);
bsLiveShadow++;
} }


// inlined: bsW(1, 0); // inlined: bsW(1, 0);
while (bsLive >= 8) {
out.write(bsBuff >> 24);
bsBuff <<= 8;
bsLive -= 8;
while (bsLiveShadow >= 8) {
outShadow.write(bsBuffShadow >> 24);
bsBuffShadow <<= 8;
bsLiveShadow -= 8;
} }
//bsBuff |= 0 << (32 - bsLive - 1);
bsLive++;
//bsBuffShadow |= 0 << (32 - bsLiveShadow - 1);
bsLiveShadow++;
} }


this.bsBuff = bsBuff;
this.bsLive = bsLive;
this.bsBuff = bsBuffShadow;
this.bsLive = bsLiveShadow;
} }


private void sendMTFValues6(final int nGroups, final int alphaSize) private void sendMTFValues6(final int nGroups, final int alphaSize)
throws IOException { throws IOException {
final byte[][] len = this.data.sendMTFValues_len; final byte[][] len = this.data.sendMTFValues_len;
final OutputStream out = this.out;
final OutputStream outShadow = this.out;


int bsLive = this.bsLive;
int bsBuff = this.bsBuff;
int bsLiveShadow = this.bsLive;
int bsBuffShadow = this.bsBuff;


for (int t = 0; t < nGroups; t++) { for (int t = 0; t < nGroups; t++) {
byte[] len_t = len[t]; byte[] len_t = len[t];
int curr = len_t[0] & 0xff; int curr = len_t[0] & 0xff;


// inlined: bsW(5, curr); // inlined: bsW(5, curr);
while (bsLive >= 8) {
out.write(bsBuff >> 24); // write 8-bit
bsBuff <<= 8;
bsLive -= 8;
while (bsLiveShadow >= 8) {
outShadow.write(bsBuffShadow >> 24); // write 8-bit
bsBuffShadow <<= 8;
bsLiveShadow -= 8;
} }
bsBuff |= curr << (32 - bsLive - 5);
bsLive += 5;
bsBuffShadow |= curr << (32 - bsLiveShadow - 5);
bsLiveShadow += 5;


for (int i = 0; i < alphaSize; i++) { for (int i = 0; i < alphaSize; i++) {
int lti = len_t[i] & 0xff; int lti = len_t[i] & 0xff;
while (curr < lti) { while (curr < lti) {
// inlined: bsW(2, 2); // inlined: bsW(2, 2);
while (bsLive >= 8) {
out.write(bsBuff >> 24); // write 8-bit
bsBuff <<= 8;
bsLive -= 8;
while (bsLiveShadow >= 8) {
outShadow.write(bsBuffShadow >> 24); // write 8-bit
bsBuffShadow <<= 8;
bsLiveShadow -= 8;
} }
bsBuff |= 2 << (32 - bsLive - 2);
bsLive += 2;
bsBuffShadow |= 2 << (32 - bsLiveShadow - 2);
bsLiveShadow += 2;


curr++; /* 10 */ curr++; /* 10 */
} }


while (curr > lti) { while (curr > lti) {
// inlined: bsW(2, 3); // inlined: bsW(2, 3);
while (bsLive >= 8) {
out.write(bsBuff >> 24); // write 8-bit
bsBuff <<= 8;
bsLive -= 8;
while (bsLiveShadow >= 8) {
outShadow.write(bsBuffShadow >> 24); // write 8-bit
bsBuffShadow <<= 8;
bsLiveShadow -= 8;
} }
bsBuff |= 3 << (32 - bsLive - 2);
bsLive += 2;
bsBuffShadow |= 3 << (32 - bsLiveShadow - 2);
bsLiveShadow += 2;


curr--; /* 11 */ curr--; /* 11 */
} }


// inlined: bsW(1, 0); // inlined: bsW(1, 0);
while (bsLive >= 8) {
out.write(bsBuff >> 24); // write 8-bit
bsBuff <<= 8;
bsLive -= 8;
while (bsLiveShadow >= 8) {
outShadow.write(bsBuffShadow >> 24); // write 8-bit
bsBuffShadow <<= 8;
bsLiveShadow -= 8;
} }
// bsBuff |= 0 << (32 - bsLive - 1);
bsLive++;
// bsBuffShadow |= 0 << (32 - bsLiveShadow - 1);
bsLiveShadow++;
} }
} }


this.bsBuff = bsBuff;
this.bsLive = bsLive;
this.bsBuff = bsBuffShadow;
this.bsLive = bsLiveShadow;
} }


private void sendMTFValues7(final int nSelectors) throws IOException { private void sendMTFValues7(final int nSelectors) throws IOException {
final Data data = this.data;
final byte[][] len = data.sendMTFValues_len;
final int[][] code = data.sendMTFValues_code;
final OutputStream out = this.out;
final byte[] selector = data.selector;
final char[] sfmap = data.sfmap;
final int nMTF = this.nMTF;
final Data dataShadow = this.data;
final byte[][] len = dataShadow.sendMTFValues_len;
final int[][] code = dataShadow.sendMTFValues_code;
final OutputStream outShadow = this.out;
final byte[] selector = dataShadow.selector;
final char[] sfmap = dataShadow.sfmap;
final int nMTFShadow = this.nMTF;


int selCtr = 0; int selCtr = 0;


int bsLive = this.bsLive;
int bsBuff = this.bsBuff;
int bsLiveShadow = this.bsLive;
int bsBuffShadow = this.bsBuff;


for (int gs = 0; gs < nMTF;) {
final int ge = Math.min(gs + G_SIZE - 1, nMTF - 1);
for (int gs = 0; gs < nMTFShadow;) {
final int ge = Math.min(gs + G_SIZE - 1, nMTFShadow - 1);
final int selector_selCtr = selector[selCtr] & 0xff; final int selector_selCtr = selector[selCtr] & 0xff;
final int[] code_selCtr = code[selector_selCtr]; final int[] code_selCtr = code[selector_selCtr];
final byte[] len_selCtr = len[selector_selCtr]; final byte[] len_selCtr = len[selector_selCtr];
@@ -1365,14 +1365,14 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
// inlined: bsW(len_selCtr[sfmap_i] & 0xff, // inlined: bsW(len_selCtr[sfmap_i] & 0xff,
// code_selCtr[sfmap_i]); // code_selCtr[sfmap_i]);
// //
while (bsLive >= 8) {
out.write(bsBuff >> 24);
bsBuff <<= 8;
bsLive -= 8;
while (bsLiveShadow >= 8) {
outShadow.write(bsBuffShadow >> 24);
bsBuffShadow <<= 8;
bsLiveShadow -= 8;
} }
final int n = len_selCtr[sfmap_i] & 0xFF; final int n = len_selCtr[sfmap_i] & 0xFF;
bsBuff |= code_selCtr[sfmap_i] << (32 - bsLive - n);
bsLive += n;
bsBuffShadow |= code_selCtr[sfmap_i] << (32 - bsLiveShadow - n);
bsLiveShadow += n;


gs++; gs++;
} }
@@ -1381,8 +1381,8 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
selCtr++; selCtr++;
} }


this.bsBuff = bsBuff;
this.bsLive = bsLive;
this.bsBuff = bsBuffShadow;
this.bsLive = bsLiveShadow;
} }


private void moveToFrontCodeAndSend() throws IOException { private void moveToFrontCodeAndSend() throws IOException {
@@ -1400,7 +1400,7 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
* HotSpot Client). Of course it depends on the JIT compiler of * HotSpot Client). Of course it depends on the JIT compiler of
* the vm.</p> * the vm.</p>
*/ */
private boolean mainSimpleSort(final Data data, final int lo, final int hi,
private boolean mainSimpleSort(final Data dataShadow, final int lo, final int hi,
final int d) { final int d) {
final int bigN = hi - lo + 1; final int bigN = hi - lo + 1;
if (bigN < 2) { if (bigN < 2) {
@@ -1412,14 +1412,14 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
hp++; hp++;
} }


final int[] fmap = data.fmap;
final char[] quadrant = data.quadrant;
final byte[] block = data.block;
final int last = this.last;
final int lastPlus1 = last + 1;
final boolean firstAttempt = this.firstAttempt;
final int workLimit = this.workLimit;
int workDone = this.workDone;
final int[] fmap = dataShadow.fmap;
final char[] quadrant = dataShadow.quadrant;
final byte[] block = dataShadow.block;
final int lastShadow = this.last;
final int lastPlus1 = lastShadow + 1;
final boolean firstAttemptShadow = this.firstAttempt;
final int workLimitShadow = this.workLimit;
int workDoneShadow = this.workDone;


// Following block contains unrolled code which could be shortened by // Following block contains unrolled code which could be shortened by
// coding it in additional loops. // coding it in additional loops.
@@ -1437,7 +1437,7 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {


// for (int a; // for (int a;
// (j > mj) && mainGtU((a = fmap[j - h]) + d, vd, // (j > mj) && mainGtU((a = fmap[j - h]) + d, vd,
// block, quadrant, last);
// block, quadrant, lastShadow);
// j -= h) { // j -= h) {
// fmap[j] = a; // fmap[j] = a;
// } // }
@@ -1471,7 +1471,7 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
if (block[i1 + 5] == block[i2 + 5]) { if (block[i1 + 5] == block[i2 + 5]) {
if (block[(i1 += 6)] if (block[(i1 += 6)]
== block[(i2 += 6)]) { == block[(i2 += 6)]) {
int x = last;
int x = lastShadow;
X: while (x > 0) { X: while (x > 0) {
x -= 4; x -= 4;


@@ -1491,7 +1491,7 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
if ((i2 += 4) >= lastPlus1) { if ((i2 += 4) >= lastPlus1) {
i2 -= lastPlus1; i2 -= lastPlus1;
} }
workDone++;
workDoneShadow++;
continue X; continue X;
} else if ((quadrant[i1 + 3] > quadrant[i2 + 3])) { } else if ((quadrant[i1 + 3] > quadrant[i2 + 3])) {
continue HAMMER; continue HAMMER;
@@ -1582,14 +1582,14 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
fmap[j] = v; fmap[j] = v;
} }


if (firstAttempt && (i <= hi) && (workDone > workLimit)) {
if (firstAttemptShadow && (i <= hi) && (workDoneShadow > workLimitShadow)) {
break HP; break HP;
} }
} }
} }


this.workDone = workDone;
return firstAttempt && (workDone > workLimit);
this.workDone = workDoneShadow;
return firstAttemptShadow && (workDoneShadow > workLimitShadow);
} }


private static void vswap(int[] fmap, int p1, int p2, int n) { private static void vswap(int[] fmap, int p1, int p2, int n) {
@@ -1623,7 +1623,7 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {


int[] fmap = this.data.fmap; int[] fmap = this.data.fmap;
this.origPtr = -1; this.origPtr = -1;
for (int i = 0, last = this.last; i <= last; i++) {
for (int i = 0, lastShadow = this.last; i <= lastShadow; i++) {
if (fmap[i] == 0) { if (fmap[i] == 0) {
this.origPtr = i; this.origPtr = i;
break; break;
@@ -1636,13 +1636,13 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
/** /**
* Method "mainQSort3", file "blocksort.c", BZip2 1.0.2 * Method "mainQSort3", file "blocksort.c", BZip2 1.0.2
*/ */
private void mainQSort3(final Data data, final int loSt, final int hiSt,
private void mainQSort3(final Data dataShadow, final int loSt, final int hiSt,
final int dSt) { final int dSt) {
final int[] stack_ll = data.stack_ll;
final int[] stack_hh = data.stack_hh;
final int[] stack_dd = data.stack_dd;
final int[] fmap = data.fmap;
final byte[] block = data.block;
final int[] stack_ll = dataShadow.stack_ll;
final int[] stack_hh = dataShadow.stack_hh;
final int[] stack_dd = dataShadow.stack_dd;
final int[] fmap = dataShadow.fmap;
final byte[] block = dataShadow.block;


stack_ll[0] = loSt; stack_ll[0] = loSt;
stack_hh[0] = hiSt; stack_hh[0] = hiSt;
@@ -1654,7 +1654,7 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
final int d = stack_dd[sp]; final int d = stack_dd[sp];


if ((hi - lo < SMALL_THRESH) || (d > DEPTH_THRESH)) { if ((hi - lo < SMALL_THRESH) || (d > DEPTH_THRESH)) {
if (mainSimpleSort(data, lo, hi, d)) {
if (mainSimpleSort(dataShadow, lo, hi, d)) {
return; return;
} }
} else { } else {
@@ -1743,17 +1743,17 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
} }


private void mainSort() { private void mainSort() {
final Data data = this.data;
final int[] runningOrder = data.mainSort_runningOrder;
final int[] copy = data.mainSort_copy;
final boolean[] bigDone = data.mainSort_bigDone;
final int[] ftab = data.ftab;
final byte[] block = data.block;
final int[] fmap = data.fmap;
final char[] quadrant = data.quadrant;
final int last = this.last;
final int workLimit = this.workLimit;
final boolean firstAttempt = this.firstAttempt;
final Data dataShadow = this.data;
final int[] runningOrder = dataShadow.mainSort_runningOrder;
final int[] copy = dataShadow.mainSort_copy;
final boolean[] bigDone = dataShadow.mainSort_bigDone;
final int[] ftab = dataShadow.ftab;
final byte[] block = dataShadow.block;
final int[] fmap = dataShadow.fmap;
final char[] quadrant = dataShadow.quadrant;
final int lastShadow = this.last;
final int workLimitShadow = this.workLimit;
final boolean firstAttemptShadow = this.firstAttempt;


// Set up the 2-byte frequency table // Set up the 2-byte frequency table
for (int i = 65537; --i >= 0;) { for (int i = 65537; --i >= 0;) {
@@ -1766,17 +1766,17 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
set up the overshoot area for block. set up the overshoot area for block.
*/ */
for (int i = 0; i < NUM_OVERSHOOT_BYTES; i++) { for (int i = 0; i < NUM_OVERSHOOT_BYTES; i++) {
block[last + i + 2] = block[(i % (last + 1)) + 1];
block[lastShadow + i + 2] = block[(i % (lastShadow + 1)) + 1];
} }
for (int i = last + NUM_OVERSHOOT_BYTES; --i >= 0;) {
for (int i = lastShadow + NUM_OVERSHOOT_BYTES; --i >= 0;) {
quadrant[i] = 0; quadrant[i] = 0;
} }
block[0] = block[last + 1];
block[0] = block[lastShadow + 1];


// Complete the initial radix sort: // Complete the initial radix sort:


int c1 = block[0] & 0xff; int c1 = block[0] & 0xff;
for (int i = 0; i <= last; i++) {
for (int i = 0; i <= lastShadow; i++) {
final int c2 = block[i + 1] & 0xff; final int c2 = block[i + 1] & 0xff;
ftab[(c1 << 8) + c2]++; ftab[(c1 << 8) + c2]++;
c1 = c2; c1 = c2;
@@ -1786,14 +1786,14 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
ftab[i] += ftab[i - 1]; ftab[i] += ftab[i - 1];


c1 = block[1] & 0xff; c1 = block[1] & 0xff;
for (int i = 0; i < last; i++) {
for (int i = 0; i < lastShadow; i++) {
final int c2 = block[i + 2] & 0xff; final int c2 = block[i + 2] & 0xff;
fmap[--ftab[(c1 << 8) + c2]] = i; fmap[--ftab[(c1 << 8) + c2]] = i;
c1 = c2; c1 = c2;
} }


fmap[--ftab[((block[last + 1] & 0xff) << 8) + (block[1] & 0xff)]]
= last;
fmap[--ftab[((block[lastShadow + 1] & 0xff) << 8) + (block[1] & 0xff)]]
= lastShadow;


/* /*
Now ftab contains the first loc of every small bucket. Now ftab contains the first loc of every small bucket.
@@ -1849,8 +1849,8 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
final int lo = ftab_sb & CLEARMASK; final int lo = ftab_sb & CLEARMASK;
final int hi = (ftab[sb + 1] & CLEARMASK) - 1; final int hi = (ftab[sb + 1] & CLEARMASK) - 1;
if (hi > lo) { if (hi > lo) {
mainQSort3(data, lo, hi, 2);
if (firstAttempt && (this.workDone > workLimit)) {
mainQSort3(dataShadow, lo, hi, 2);
if (firstAttemptShadow && (this.workDone > workLimitShadow)) {
return; return;
} }
} }
@@ -1873,7 +1873,7 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
final int fmap_j = fmap[j]; final int fmap_j = fmap[j];
c1 = block[fmap_j] & 0xff; c1 = block[fmap_j] & 0xff;
if (!bigDone[c1]) { if (!bigDone[c1]) {
fmap[copy[c1]] = (fmap_j == 0) ? last : (fmap_j - 1);
fmap[copy[c1]] = (fmap_j == 0) ? lastShadow : (fmap_j - 1);
copy[c1]++; copy[c1]++;
} }
} }
@@ -1907,7 +1907,7 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
final char qVal = (char) (j >> shifts); final char qVal = (char) (j >> shifts);
quadrant[a2update] = qVal; quadrant[a2update] = qVal;
if (a2update < NUM_OVERSHOOT_BYTES) { if (a2update < NUM_OVERSHOOT_BYTES) {
quadrant[a2update + last + 1] = qVal;
quadrant[a2update + lastShadow + 1] = qVal;
} }
} }
} }
@@ -1918,14 +1918,14 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
private void randomiseBlock() { private void randomiseBlock() {
final boolean[] inUse = this.data.inUse; final boolean[] inUse = this.data.inUse;
final byte[] block = this.data.block; final byte[] block = this.data.block;
final int last = this.last;
final int lastShadow = this.last;


for (int i = 256; --i >= 0;) for (int i = 256; --i >= 0;)
inUse[i] = false; inUse[i] = false;


int rNToGo = 0; int rNToGo = 0;
int rTPos = 0; int rTPos = 0;
for (int i = 0, j = 1; i <= last; i = j, j++) {
for (int i = 0, j = 1; i <= lastShadow; i = j, j++) {
if (rNToGo == 0) { if (rNToGo == 0) {
rNToGo = (char) BZip2Constants.rNums[rTPos]; rNToGo = (char) BZip2Constants.rNums[rTPos];
if (++rTPos == 512) { if (++rTPos == 512) {
@@ -1944,40 +1944,40 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants {
} }


private void generateMTFValues() { private void generateMTFValues() {
final int last = this.last;
final Data data = this.data;
final boolean[] inUse = data.inUse;
final byte[] block = data.block;
final int[] fmap = data.fmap;
final char[] sfmap = data.sfmap;
final int[] mtfFreq = data.mtfFreq;
final byte[] unseqToSeq = data.unseqToSeq;
final byte[] yy = data.generateMTFValues_yy;
final int lastShadow = this.last;
final Data dataShadow = this.data;
final boolean[] inUse = dataShadow.inUse;
final byte[] block = dataShadow.block;
final int[] fmap = dataShadow.fmap;
final char[] sfmap = dataShadow.sfmap;
final int[] mtfFreq = dataShadow.mtfFreq;
final byte[] unseqToSeq = dataShadow.unseqToSeq;
final byte[] yy = dataShadow.generateMTFValues_yy;


// make maps // make maps
int nInUse = 0;
int nInUseShadow = 0;
for (int i = 0; i < 256; i++) { for (int i = 0; i < 256; i++) {
if (inUse[i]) { if (inUse[i]) {
unseqToSeq[i] = (byte) nInUse;
nInUse++;
unseqToSeq[i] = (byte) nInUseShadow;
nInUseShadow++;
} }
} }
this.nInUse = nInUse;
this.nInUse = nInUseShadow;


final int eob = nInUse + 1;
final int eob = nInUseShadow + 1;


for (int i = eob; i >= 0; i--) { for (int i = eob; i >= 0; i--) {
mtfFreq[i] = 0; mtfFreq[i] = 0;
} }


for (int i = nInUse; --i >= 0;) {
for (int i = nInUseShadow; --i >= 0;) {
yy[i] = (byte) i; yy[i] = (byte) i;
} }


int wr = 0; int wr = 0;
int zPend = 0; int zPend = 0;


for (int i = 0; i <= last; i++) {
for (int i = 0; i <= lastShadow; i++) {
final byte ll_i = unseqToSeq[block[fmap[i]] & 0xff]; final byte ll_i = unseqToSeq[block[fmap[i]] & 0xff];
byte tmp = yy[0]; byte tmp = yy[0];
int j = 0; int j = 0;


+ 4
- 4
src/main/org/apache/tools/bzip2/CRC.java View File

@@ -125,14 +125,14 @@ final class CRC {
} }


void updateCRC(int inCh, int repeat) { void updateCRC(int inCh, int repeat) {
int globalCrc = this.globalCrc;
int globalCrcShadow = this.globalCrc;
while (repeat-- > 0) { while (repeat-- > 0) {
int temp = (globalCrc >> 24) ^ inCh;
globalCrc = (globalCrc << 8) ^ crc32Table[(temp >= 0)
int temp = (globalCrcShadow >> 24) ^ inCh;
globalCrcShadow = (globalCrcShadow << 8) ^ crc32Table[(temp >= 0)
? temp ? temp
: (temp + 256)]; : (temp + 256)];
} }
this.globalCrc = globalCrc;
this.globalCrc = globalCrcShadow;
} }


int globalCrc; int globalCrc;


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