git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@274796 13f79535-47bb-0310-9956-ffa450edef68master
@@ -29,7 +29,7 @@ | |||||
<formatter type="xml" toFile="${checkstyle.raw}"/> | <formatter type="xml" toFile="${checkstyle.raw}"/> | ||||
<fileset dir="${java.dir}"> | <fileset dir="${java.dir}"> | ||||
<include name="${tocheck}"/> | <include name="${tocheck}"/> | ||||
<exclude name="**/BZip2Constants.java"/> | |||||
<exclude name="**/bzip2/*.java"/> | |||||
<exclude name="**/CVSPass.java"/> | <exclude name="**/CVSPass.java"/> | ||||
</fileset> | </fileset> | ||||
</checkstyle> | </checkstyle> | ||||
@@ -139,12 +139,12 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants { | |||||
freq table collected to save a pass over the data | freq table collected to save a pass over the data | ||||
during decompression. | during decompression. | ||||
*/ | */ | ||||
private int unzftab[] = new int[256]; | |||||
private int[] unzftab = new int[256]; | |||||
private int limit[][] = new int[N_GROUPS][MAX_ALPHA_SIZE]; | |||||
private int base[][] = new int[N_GROUPS][MAX_ALPHA_SIZE]; | |||||
private int perm[][] = new int[N_GROUPS][MAX_ALPHA_SIZE]; | |||||
private int minLens[] = new int[N_GROUPS]; | |||||
private int[][] limit = new int[N_GROUPS][MAX_ALPHA_SIZE]; | |||||
private int[][] base = new int[N_GROUPS][MAX_ALPHA_SIZE]; | |||||
private int[][] perm = new int[N_GROUPS][MAX_ALPHA_SIZE]; | |||||
private int[] minLens = new int[N_GROUPS]; | |||||
private InputStream bsStream; | private InputStream bsStream; | ||||
@@ -302,10 +302,11 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants { | |||||
if (this.bsStream != null) { | if (this.bsStream != null) { | ||||
if (this.bsStream != System.in) { | if (this.bsStream != System.in) { | ||||
this.bsStream.close(); | this.bsStream.close(); | ||||
this.bsStream= null; | |||||
this.bsStream = null; | |||||
} | } | ||||
} | } | ||||
} catch (IOException ioe) { | } catch (IOException ioe) { | ||||
//ignore | |||||
} | } | ||||
} | } | ||||
@@ -319,22 +320,20 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants { | |||||
private int bsR(int n) { | private int bsR(int n) { | ||||
int v; | int v; | ||||
{ | |||||
while (bsLive < n) { | |||||
int zzi; | |||||
char thech = 0; | |||||
try { | |||||
thech = (char) bsStream.read(); | |||||
} catch (IOException e) { | |||||
compressedStreamEOF(); | |||||
} | |||||
if (thech == -1) { | |||||
compressedStreamEOF(); | |||||
} | |||||
zzi = thech; | |||||
bsBuff = (bsBuff << 8) | (zzi & 0xff); | |||||
bsLive += 8; | |||||
while (bsLive < n) { | |||||
int zzi; | |||||
char thech = 0; | |||||
try { | |||||
thech = (char) bsStream.read(); | |||||
} catch (IOException e) { | |||||
compressedStreamEOF(); | |||||
} | |||||
if (thech == -1) { | |||||
compressedStreamEOF(); | |||||
} | } | ||||
zzi = thech; | |||||
bsBuff = (bsBuff << 8) | (zzi & 0xff); | |||||
bsLive += 8; | |||||
} | } | ||||
v = (bsBuff >> (bsLive - n)) & ((1 << n) - 1); | v = (bsBuff >> (bsLive - n)) & ((1 << n) - 1); | ||||
@@ -376,7 +375,7 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants { | |||||
pp++; | pp++; | ||||
} | } | ||||
} | } | ||||
}; | |||||
} | |||||
for (i = 0; i < MAX_CODE_LEN; i++) { | for (i = 0; i < MAX_CODE_LEN; i++) { | ||||
base[i] = 0; | base[i] = 0; | ||||
@@ -618,7 +617,7 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants { | |||||
bsLive--; | bsLive--; | ||||
} | } | ||||
zvec = (zvec << 1) | zj; | zvec = (zvec << 1) | zj; | ||||
}; | |||||
} | |||||
nextSym = perm[zt][zvec - base[zt][zn]]; | nextSym = perm[zt][zvec - base[zt][zn]]; | ||||
} | } | ||||
} while (nextSym == RUNA || nextSym == RUNB); | } while (nextSym == RUNA || nextSym == RUNB); | ||||
@@ -631,7 +630,7 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants { | |||||
last++; | last++; | ||||
ll8[last] = ch; | ll8[last] = ch; | ||||
s--; | s--; | ||||
}; | |||||
} | |||||
if (last >= limitLast) { | if (last >= limitLast) { | ||||
blockOverrun(); | blockOverrun(); | ||||
@@ -698,7 +697,7 @@ public class CBZip2InputStream extends InputStream implements BZip2Constants { | |||||
bsLive--; | bsLive--; | ||||
} | } | ||||
zvec = (zvec << 1) | zj; | zvec = (zvec << 1) | zj; | ||||
}; | |||||
} | |||||
nextSym = perm[zt][zvec - base[zt][zn]]; | nextSym = perm[zt][zvec - base[zt][zn]]; | ||||
} | } | ||||
continue; | continue; | ||||
@@ -163,8 +163,8 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants { | |||||
if (yy > nHeap) { | if (yy > nHeap) { | ||||
break; | break; | ||||
} | } | ||||
if (yy < nHeap && | |||||
weight[heap[yy + 1]] < weight[heap[yy]]) { | |||||
if (yy < nHeap | |||||
&& weight[heap[yy + 1]] < weight[heap[yy]]) { | |||||
yy++; | yy++; | ||||
} | } | ||||
if (weight[tmp] < weight[heap[yy]]) { | if (weight[tmp] < weight[heap[yy]]) { | ||||
@@ -187,8 +187,8 @@ public class CBZip2OutputStream extends OutputStream implements BZip2Constants { | |||||
if (yy > nHeap) { | if (yy > nHeap) { | ||||
break; | break; | ||||
} | } | ||||
if (yy < nHeap && | |||||
weight[heap[yy + 1]] < weight[heap[yy]]) { | |||||
if (yy < nHeap | |||||
&& weight[heap[yy + 1]] < weight[heap[yy]]) { | |||||
yy++; | yy++; | ||||
} | } | ||||
if (weight[tmp] < weight[heap[yy]]) { | if (weight[tmp] < weight[heap[yy]]) { | ||||
@@ -53,10 +53,10 @@ | |||||
*/ | */ | ||||
/* | /* | ||||
* This package is based on the work done by Timothy Gerard Endres | |||||
* This package is based on the work done by Timothy Gerard Endres | |||||
* (time@ice.com) to whom the Ant project is very grateful for his great code. | * (time@ice.com) to whom the Ant project is very grateful for his great code. | ||||
*/ | */ | ||||
package org.apache.tools.tar; | package org.apache.tools.tar; | ||||
import java.io.InputStream; | import java.io.InputStream; | ||||
@@ -73,15 +73,15 @@ import java.io.IOException; | |||||
* <p> | * <p> | ||||
* You should never have a need to access this class directly. | * You should never have a need to access this class directly. | ||||
* TarBuffers are created by Tar IO Streams. | * TarBuffers are created by Tar IO Streams. | ||||
* | |||||
* | |||||
* @author Timothy Gerard Endres <a href="mailto:time@ice.com">time@ice.com</a> | * @author Timothy Gerard Endres <a href="mailto:time@ice.com">time@ice.com</a> | ||||
*/ | */ | ||||
public class TarBuffer { | public class TarBuffer { | ||||
public static final int DEFAULT_RCDSIZE = (512); | public static final int DEFAULT_RCDSIZE = (512); | ||||
public static final int DEFAULT_BLKSIZE = (DEFAULT_RCDSIZE * 20); | public static final int DEFAULT_BLKSIZE = (DEFAULT_RCDSIZE * 20); | ||||
private InputStream inStream; | private InputStream inStream; | ||||
private OutputStream outStream; | private OutputStream outStream; | ||||
private byte[] blockBuffer; | private byte[] blockBuffer; | ||||
@@ -138,101 +138,101 @@ public class TarBuffer { | |||||
} else { | } else { | ||||
this.currBlkIdx = 0; | this.currBlkIdx = 0; | ||||
this.currRecIdx = 0; | this.currRecIdx = 0; | ||||
} | |||||
} | |||||
} | |||||
} | |||||
/** | /** | ||||
* Get the TAR Buffer's block size. Blocks consist of multiple records. | * Get the TAR Buffer's block size. Blocks consist of multiple records. | ||||
*/ | */ | ||||
public int getBlockSize() { | public int getBlockSize() { | ||||
return this.blockSize; | return this.blockSize; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Get the TAR Buffer's record size. | * Get the TAR Buffer's record size. | ||||
*/ | */ | ||||
public int getRecordSize() { | public int getRecordSize() { | ||||
return this.recordSize; | return this.recordSize; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Set the debugging flag for the buffer. | * Set the debugging flag for the buffer. | ||||
* | |||||
* | |||||
* @param debug If true, print debugging output. | * @param debug If true, print debugging output. | ||||
*/ | */ | ||||
public void setDebug(boolean debug) { | public void setDebug(boolean debug) { | ||||
this.debug = debug; | this.debug = debug; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Determine if an archive record indicate End of Archive. End of | * Determine if an archive record indicate End of Archive. End of | ||||
* archive is indicated by a record that consists entirely of null bytes. | * archive is indicated by a record that consists entirely of null bytes. | ||||
* | |||||
* | |||||
* @param record The record data to check. | * @param record The record data to check. | ||||
*/ | */ | ||||
public boolean isEOFRecord(byte[] record) { | public boolean isEOFRecord(byte[] record) { | ||||
for (int i = 0, sz = this.getRecordSize(); i < sz; ++i) { | for (int i = 0, sz = this.getRecordSize(); i < sz; ++i) { | ||||
if (record[i] != 0) { | if (record[i] != 0) { | ||||
return false; | return false; | ||||
} | |||||
} | |||||
} | } | ||||
return true; | return true; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Skip over a record on the input stream. | * Skip over a record on the input stream. | ||||
*/ | */ | ||||
public void skipRecord() throws IOException { | public void skipRecord() throws IOException { | ||||
if (this.debug) { | if (this.debug) { | ||||
System.err.println("SkipRecord: recIdx = " + this.currRecIdx | |||||
System.err.println("SkipRecord: recIdx = " + this.currRecIdx | |||||
+ " blkIdx = " + this.currBlkIdx); | + " blkIdx = " + this.currBlkIdx); | ||||
} | |||||
} | |||||
if (this.inStream == null) { | if (this.inStream == null) { | ||||
throw new IOException("reading (via skip) from an output buffer"); | throw new IOException("reading (via skip) from an output buffer"); | ||||
} | |||||
} | |||||
if (this.currRecIdx >= this.recsPerBlock) { | if (this.currRecIdx >= this.recsPerBlock) { | ||||
if (!this.readBlock()) { | if (!this.readBlock()) { | ||||
return; // UNDONE | return; // UNDONE | ||||
} | |||||
} | |||||
} | |||||
} | |||||
this.currRecIdx++; | this.currRecIdx++; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Read a record from the input stream and return the data. | * Read a record from the input stream and return the data. | ||||
* | |||||
* | |||||
* @return The record data. | * @return The record data. | ||||
*/ | */ | ||||
public byte[] readRecord() throws IOException { | public byte[] readRecord() throws IOException { | ||||
if (this.debug) { | if (this.debug) { | ||||
System.err.println("ReadRecord: recIdx = " + this.currRecIdx | |||||
System.err.println("ReadRecord: recIdx = " + this.currRecIdx | |||||
+ " blkIdx = " + this.currBlkIdx); | + " blkIdx = " + this.currBlkIdx); | ||||
} | |||||
} | |||||
if (this.inStream == null) { | if (this.inStream == null) { | ||||
throw new IOException("reading from an output buffer"); | throw new IOException("reading from an output buffer"); | ||||
} | |||||
} | |||||
if (this.currRecIdx >= this.recsPerBlock) { | if (this.currRecIdx >= this.recsPerBlock) { | ||||
if (!this.readBlock()) { | if (!this.readBlock()) { | ||||
return null; | return null; | ||||
} | |||||
} | |||||
} | |||||
} | |||||
byte[] result = new byte[this.recordSize]; | byte[] result = new byte[this.recordSize]; | ||||
System.arraycopy(this.blockBuffer, | |||||
(this.currRecIdx * this.recordSize), result, 0, | |||||
System.arraycopy(this.blockBuffer, | |||||
(this.currRecIdx * this.recordSize), result, 0, | |||||
this.recordSize); | this.recordSize); | ||||
this.currRecIdx++; | this.currRecIdx++; | ||||
return result; | return result; | ||||
} | |||||
} | |||||
/** | /** | ||||
* @return false if End-Of-File, else true | * @return false if End-Of-File, else true | ||||
@@ -240,11 +240,11 @@ public class TarBuffer { | |||||
private boolean readBlock() throws IOException { | private boolean readBlock() throws IOException { | ||||
if (this.debug) { | if (this.debug) { | ||||
System.err.println("ReadBlock: blkIdx = " + this.currBlkIdx); | System.err.println("ReadBlock: blkIdx = " + this.currBlkIdx); | ||||
} | |||||
} | |||||
if (this.inStream == null) { | if (this.inStream == null) { | ||||
throw new IOException("reading from an output buffer"); | throw new IOException("reading from an output buffer"); | ||||
} | |||||
} | |||||
this.currRecIdx = 0; | this.currRecIdx = 0; | ||||
@@ -252,130 +252,130 @@ public class TarBuffer { | |||||
int bytesNeeded = this.blockSize; | int bytesNeeded = this.blockSize; | ||||
while (bytesNeeded > 0) { | while (bytesNeeded > 0) { | ||||
long numBytes = this.inStream.read(this.blockBuffer, offset, | |||||
long numBytes = this.inStream.read(this.blockBuffer, offset, | |||||
bytesNeeded); | bytesNeeded); | ||||
// | |||||
// | |||||
// NOTE | // NOTE | ||||
// We have fit EOF, and the block is not full! | // We have fit EOF, and the block is not full! | ||||
// | |||||
// | |||||
// This is a broken archive. It does not follow the standard | // This is a broken archive. It does not follow the standard | ||||
// blocking algorithm. However, because we are generous, and | // blocking algorithm. However, because we are generous, and | ||||
// it requires little effort, we will simply ignore the error | // it requires little effort, we will simply ignore the error | ||||
// and continue as if the entire block were read. This does | // and continue as if the entire block were read. This does | ||||
// not appear to break anything upstream. We used to return | // not appear to break anything upstream. We used to return | ||||
// false in this case. | // false in this case. | ||||
// | |||||
// | |||||
// Thanks to 'Yohann.Roussel@alcatel.fr' for this fix. | // Thanks to 'Yohann.Roussel@alcatel.fr' for this fix. | ||||
// | |||||
// | |||||
if (numBytes == -1) { | if (numBytes == -1) { | ||||
break; | break; | ||||
} | |||||
} | |||||
offset += numBytes; | offset += numBytes; | ||||
bytesNeeded -= numBytes; | bytesNeeded -= numBytes; | ||||
if (numBytes != this.blockSize) { | if (numBytes != this.blockSize) { | ||||
if (this.debug) { | if (this.debug) { | ||||
System.err.println("ReadBlock: INCOMPLETE READ " | |||||
+ numBytes + " of " + this.blockSize | |||||
System.err.println("ReadBlock: INCOMPLETE READ " | |||||
+ numBytes + " of " + this.blockSize | |||||
+ " bytes read."); | + " bytes read."); | ||||
} | |||||
} | |||||
} | |||||
} | |||||
} | |||||
} | |||||
this.currBlkIdx++; | this.currBlkIdx++; | ||||
return true; | return true; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Get the current block number, zero based. | * Get the current block number, zero based. | ||||
* | |||||
* | |||||
* @return The current zero based block number. | * @return The current zero based block number. | ||||
*/ | */ | ||||
public int getCurrentBlockNum() { | public int getCurrentBlockNum() { | ||||
return this.currBlkIdx; | return this.currBlkIdx; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Get the current record number, within the current block, zero based. | * Get the current record number, within the current block, zero based. | ||||
* Thus, current offset = (currentBlockNum * recsPerBlk) + currentRecNum. | * Thus, current offset = (currentBlockNum * recsPerBlk) + currentRecNum. | ||||
* | |||||
* | |||||
* @return The current zero based record number. | * @return The current zero based record number. | ||||
*/ | */ | ||||
public int getCurrentRecordNum() { | public int getCurrentRecordNum() { | ||||
return this.currRecIdx - 1; | return this.currRecIdx - 1; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Write an archive record to the archive. | * Write an archive record to the archive. | ||||
* | |||||
* | |||||
* @param record The record data to write to the archive. | * @param record The record data to write to the archive. | ||||
*/ | */ | ||||
public void writeRecord(byte[] record) throws IOException { | public void writeRecord(byte[] record) throws IOException { | ||||
if (this.debug) { | if (this.debug) { | ||||
System.err.println("WriteRecord: recIdx = " + this.currRecIdx | |||||
System.err.println("WriteRecord: recIdx = " + this.currRecIdx | |||||
+ " blkIdx = " + this.currBlkIdx); | + " blkIdx = " + this.currBlkIdx); | ||||
} | |||||
} | |||||
if (this.outStream == null) { | if (this.outStream == null) { | ||||
throw new IOException("writing to an input buffer"); | throw new IOException("writing to an input buffer"); | ||||
} | |||||
} | |||||
if (record.length != this.recordSize) { | if (record.length != this.recordSize) { | ||||
throw new IOException("record to write has length '" | |||||
+ record.length | |||||
+ "' which is not the record size of '" | |||||
throw new IOException("record to write has length '" | |||||
+ record.length | |||||
+ "' which is not the record size of '" | |||||
+ this.recordSize + "'"); | + this.recordSize + "'"); | ||||
} | |||||
} | |||||
if (this.currRecIdx >= this.recsPerBlock) { | if (this.currRecIdx >= this.recsPerBlock) { | ||||
this.writeBlock(); | this.writeBlock(); | ||||
} | |||||
} | |||||
System.arraycopy(record, 0, this.blockBuffer, | |||||
(this.currRecIdx * this.recordSize), | |||||
System.arraycopy(record, 0, this.blockBuffer, | |||||
(this.currRecIdx * this.recordSize), | |||||
this.recordSize); | this.recordSize); | ||||
this.currRecIdx++; | this.currRecIdx++; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Write an archive record to the archive, where the record may be | * Write an archive record to the archive, where the record may be | ||||
* inside of a larger array buffer. The buffer must be "offset plus | * inside of a larger array buffer. The buffer must be "offset plus | ||||
* record size" long. | * record size" long. | ||||
* | |||||
* | |||||
* @param buf The buffer containing the record data to write. | * @param buf The buffer containing the record data to write. | ||||
* @param offset The offset of the record data within buf. | * @param offset The offset of the record data within buf. | ||||
*/ | */ | ||||
public void writeRecord(byte[] buf, int offset) throws IOException { | public void writeRecord(byte[] buf, int offset) throws IOException { | ||||
if (this.debug) { | if (this.debug) { | ||||
System.err.println("WriteRecord: recIdx = " + this.currRecIdx | |||||
System.err.println("WriteRecord: recIdx = " + this.currRecIdx | |||||
+ " blkIdx = " + this.currBlkIdx); | + " blkIdx = " + this.currBlkIdx); | ||||
} | |||||
} | |||||
if (this.outStream == null) { | if (this.outStream == null) { | ||||
throw new IOException("writing to an input buffer"); | throw new IOException("writing to an input buffer"); | ||||
} | |||||
} | |||||
if ((offset + this.recordSize) > buf.length) { | if ((offset + this.recordSize) > buf.length) { | ||||
throw new IOException("record has length '" + buf.length | |||||
+ "' with offset '" + offset | |||||
+ "' which is less than the record size of '" | |||||
throw new IOException("record has length '" + buf.length | |||||
+ "' with offset '" + offset | |||||
+ "' which is less than the record size of '" | |||||
+ this.recordSize + "'"); | + this.recordSize + "'"); | ||||
} | |||||
} | |||||
if (this.currRecIdx >= this.recsPerBlock) { | if (this.currRecIdx >= this.recsPerBlock) { | ||||
this.writeBlock(); | this.writeBlock(); | ||||
} | |||||
} | |||||
System.arraycopy(buf, offset, this.blockBuffer, | |||||
(this.currRecIdx * this.recordSize), | |||||
System.arraycopy(buf, offset, this.blockBuffer, | |||||
(this.currRecIdx * this.recordSize), | |||||
this.recordSize); | this.recordSize); | ||||
this.currRecIdx++; | this.currRecIdx++; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Write a TarBuffer block to the archive. | * Write a TarBuffer block to the archive. | ||||
@@ -383,18 +383,18 @@ public class TarBuffer { | |||||
private void writeBlock() throws IOException { | private void writeBlock() throws IOException { | ||||
if (this.debug) { | if (this.debug) { | ||||
System.err.println("WriteBlock: blkIdx = " + this.currBlkIdx); | System.err.println("WriteBlock: blkIdx = " + this.currBlkIdx); | ||||
} | |||||
} | |||||
if (this.outStream == null) { | if (this.outStream == null) { | ||||
throw new IOException("writing to an input buffer"); | throw new IOException("writing to an input buffer"); | ||||
} | |||||
} | |||||
this.outStream.write(this.blockBuffer, 0, this.blockSize); | this.outStream.write(this.blockBuffer, 0, this.blockSize); | ||||
this.outStream.flush(); | this.outStream.flush(); | ||||
this.currRecIdx = 0; | this.currRecIdx = 0; | ||||
this.currBlkIdx++; | this.currBlkIdx++; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Flush the current data block if it has any data in it. | * Flush the current data block if it has any data in it. | ||||
@@ -402,16 +402,16 @@ public class TarBuffer { | |||||
private void flushBlock() throws IOException { | private void flushBlock() throws IOException { | ||||
if (this.debug) { | if (this.debug) { | ||||
System.err.println("TarBuffer.flushBlock() called."); | System.err.println("TarBuffer.flushBlock() called."); | ||||
} | |||||
} | |||||
if (this.outStream == null) { | if (this.outStream == null) { | ||||
throw new IOException("writing to an input buffer"); | throw new IOException("writing to an input buffer"); | ||||
} | |||||
} | |||||
if (this.currRecIdx > 0) { | if (this.currRecIdx > 0) { | ||||
this.writeBlock(); | this.writeBlock(); | ||||
} | |||||
} | |||||
} | |||||
} | |||||
/** | /** | ||||
* Close the TarBuffer. If this is an output buffer, also flush the | * Close the TarBuffer. If this is an output buffer, also flush the | ||||
@@ -420,23 +420,23 @@ public class TarBuffer { | |||||
public void close() throws IOException { | public void close() throws IOException { | ||||
if (this.debug) { | if (this.debug) { | ||||
System.err.println("TarBuffer.closeBuffer()."); | System.err.println("TarBuffer.closeBuffer()."); | ||||
} | |||||
} | |||||
if (this.outStream != null) { | if (this.outStream != null) { | ||||
this.flushBlock(); | this.flushBlock(); | ||||
if (this.outStream != System.out | |||||
if (this.outStream != System.out | |||||
&& this.outStream != System.err) { | && this.outStream != System.err) { | ||||
this.outStream.close(); | this.outStream.close(); | ||||
this.outStream = null; | this.outStream = null; | ||||
} | |||||
} | |||||
} else if (this.inStream != null) { | } else if (this.inStream != null) { | ||||
if (this.inStream != System.in) { | if (this.inStream != System.in) { | ||||
this.inStream.close(); | this.inStream.close(); | ||||
this.inStream = null; | this.inStream = null; | ||||
} | |||||
} | |||||
} | |||||
} | |||||
} | |||||
} | |||||
} | } |
@@ -1,7 +1,7 @@ | |||||
/* | /* | ||||
* The Apache Software License, Version 1.1 | * The Apache Software License, Version 1.1 | ||||
* | * | ||||
* Copyright (c) 2000-2002 The Apache Software Foundation. All rights | |||||
* Copyright (c) 2000-2002 The Apache Software Foundation. All rights | |||||
* reserved. | * reserved. | ||||
* | * | ||||
* Redistribution and use in source and binary forms, with or without | * Redistribution and use in source and binary forms, with or without | ||||
@@ -53,7 +53,7 @@ | |||||
*/ | */ | ||||
/* | /* | ||||
* This package is based on the work done by Timothy Gerard Endres | |||||
* This package is based on the work done by Timothy Gerard Endres | |||||
* (time@ice.com) to whom the Ant project is very grateful for his great code. | * (time@ice.com) to whom the Ant project is very grateful for his great code. | ||||
*/ | */ | ||||
@@ -67,7 +67,7 @@ package org.apache.tools.tar; | |||||
*/ | */ | ||||
public interface TarConstants { | public interface TarConstants { | ||||
/** | /** | ||||
* The length of the name field in a header buffer. | * The length of the name field in a header buffer. | ||||
*/ | */ | ||||
@@ -183,9 +183,9 @@ public interface TarConstants { | |||||
* The namr of the GNU tar entry which contains a long name. | * The namr of the GNU tar entry which contains a long name. | ||||
*/ | */ | ||||
String GNU_LONGLINK = "././@LongLink"; | String GNU_LONGLINK = "././@LongLink"; | ||||
/** | /** | ||||
* Identifies the *next* file on the tape as having a long name. | |||||
* Identifies the *next* file on the tape as having a long name. | |||||
*/ | */ | ||||
byte LF_GNUTYPE_LONGNAME = (byte) 'L'; | byte LF_GNUTYPE_LONGNAME = (byte) 'L'; | ||||
} | } |
@@ -84,7 +84,7 @@ public class TarInputStream extends FilterInputStream { | |||||
protected TarBuffer buffer; | protected TarBuffer buffer; | ||||
protected TarEntry currEntry; | protected TarEntry currEntry; | ||||
private boolean v7Format; | private boolean v7Format; | ||||
public TarInputStream(InputStream is) { | public TarInputStream(InputStream is) { | ||||
this(is, TarBuffer.DEFAULT_BLKSIZE, TarBuffer.DEFAULT_RCDSIZE); | this(is, TarBuffer.DEFAULT_BLKSIZE, TarBuffer.DEFAULT_RCDSIZE); | ||||
} | } | ||||
@@ -53,7 +53,7 @@ | |||||
*/ | */ | ||||
/* | /* | ||||
* This package is based on the work done by Timothy Gerard Endres | |||||
* This package is based on the work done by Timothy Gerard Endres | |||||
* (time@ice.com) to whom the Ant project is very grateful for his great code. | * (time@ice.com) to whom the Ant project is very grateful for his great code. | ||||
*/ | */ | ||||
@@ -67,19 +67,19 @@ import java.io.IOException; | |||||
* The TarOutputStream writes a UNIX tar archive as an OutputStream. | * The TarOutputStream writes a UNIX tar archive as an OutputStream. | ||||
* Methods are provided to put entries, and then write their contents | * Methods are provided to put entries, and then write their contents | ||||
* by writing to this stream using write(). | * by writing to this stream using write(). | ||||
* | |||||
* | |||||
* @author Timothy Gerard Endres <a href="mailto:time@ice.com">time@ice.com</a> | * @author Timothy Gerard Endres <a href="mailto:time@ice.com">time@ice.com</a> | ||||
*/ | */ | ||||
public class TarOutputStream extends FilterOutputStream { | public class TarOutputStream extends FilterOutputStream { | ||||
/** Fail if a long file name is required in the archive. */ | /** Fail if a long file name is required in the archive. */ | ||||
public static final int LONGFILE_ERROR = 0; | public static final int LONGFILE_ERROR = 0; | ||||
/** Long paths will be truncated in the archive. */ | /** Long paths will be truncated in the archive. */ | ||||
public static final int LONGFILE_TRUNCATE = 1; | public static final int LONGFILE_TRUNCATE = 1; | ||||
/** GNU tar extensions are used to store long file names in the archive. */ | /** GNU tar extensions are used to store long file names in the archive. */ | ||||
public static final int LONGFILE_GNU = 2; | public static final int LONGFILE_GNU = 2; | ||||
protected boolean debug; | protected boolean debug; | ||||
protected int currSize; | protected int currSize; | ||||
protected int currBytes; | protected int currBytes; | ||||
@@ -112,25 +112,25 @@ public class TarOutputStream extends FilterOutputStream { | |||||
public void setLongFileMode(int longFileMode) { | public void setLongFileMode(int longFileMode) { | ||||
this.longFileMode = longFileMode; | this.longFileMode = longFileMode; | ||||
} | } | ||||
/** | /** | ||||
* Sets the debugging flag. | * Sets the debugging flag. | ||||
* | |||||
* | |||||
* @param debugF True to turn on debugging. | * @param debugF True to turn on debugging. | ||||
*/ | */ | ||||
public void setDebug(boolean debugF) { | public void setDebug(boolean debugF) { | ||||
this.debug = debugF; | this.debug = debugF; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Sets the debugging flag in this stream's TarBuffer. | * Sets the debugging flag in this stream's TarBuffer. | ||||
* | |||||
* | |||||
* @param debugF True to turn on debugging. | * @param debugF True to turn on debugging. | ||||
*/ | */ | ||||
public void setBufferDebug(boolean debug) { | public void setBufferDebug(boolean debug) { | ||||
this.buffer.setDebug(debug); | this.buffer.setDebug(debug); | ||||
} | |||||
} | |||||
/** | /** | ||||
* Ends the TAR archive without closing the underlying OutputStream. | * Ends the TAR archive without closing the underlying OutputStream. | ||||
@@ -138,7 +138,7 @@ public class TarOutputStream extends FilterOutputStream { | |||||
*/ | */ | ||||
public void finish() throws IOException { | public void finish() throws IOException { | ||||
this.writeEOFRecord(); | this.writeEOFRecord(); | ||||
} | |||||
} | |||||
/** | /** | ||||
* Ends the TAR archive and closes the underlying OutputStream. | * Ends the TAR archive and closes the underlying OutputStream. | ||||
@@ -148,16 +148,16 @@ public class TarOutputStream extends FilterOutputStream { | |||||
public void close() throws IOException { | public void close() throws IOException { | ||||
this.finish(); | this.finish(); | ||||
this.buffer.close(); | this.buffer.close(); | ||||
} | |||||
} | |||||
/** | /** | ||||
* Get the record size being used by this stream's TarBuffer. | * Get the record size being used by this stream's TarBuffer. | ||||
* | |||||
* | |||||
* @return The TarBuffer record size. | * @return The TarBuffer record size. | ||||
*/ | */ | ||||
public int getRecordSize() { | public int getRecordSize() { | ||||
return this.buffer.getRecordSize(); | return this.buffer.getRecordSize(); | ||||
} | |||||
} | |||||
/** | /** | ||||
* Put an entry on the output stream. This writes the entry's | * Put an entry on the output stream. This writes the entry's | ||||
@@ -167,7 +167,7 @@ public class TarOutputStream extends FilterOutputStream { | |||||
* contents. Once the contents are written, closeEntry() | * contents. Once the contents are written, closeEntry() | ||||
* <B>MUST</B> be called to ensure that all buffered data | * <B>MUST</B> be called to ensure that all buffered data | ||||
* is completely written to the output stream. | * is completely written to the output stream. | ||||
* | |||||
* | |||||
* @param entry The TarEntry to be written to the archive. | * @param entry The TarEntry to be written to the archive. | ||||
*/ | */ | ||||
public void putNextEntry(TarEntry entry) throws IOException { | public void putNextEntry(TarEntry entry) throws IOException { | ||||
@@ -175,21 +175,21 @@ public class TarOutputStream extends FilterOutputStream { | |||||
if (longFileMode == LONGFILE_GNU) { | if (longFileMode == LONGFILE_GNU) { | ||||
// create a TarEntry for the LongLink, the contents | // create a TarEntry for the LongLink, the contents | ||||
// of which are the entry's name | |||||
// of which are the entry's name | |||||
TarEntry longLinkEntry = new TarEntry(TarConstants.GNU_LONGLINK, | TarEntry longLinkEntry = new TarEntry(TarConstants.GNU_LONGLINK, | ||||
TarConstants.LF_GNUTYPE_LONGNAME); | TarConstants.LF_GNUTYPE_LONGNAME); | ||||
longLinkEntry.setSize(entry.getName().length() + 1); | longLinkEntry.setSize(entry.getName().length() + 1); | ||||
putNextEntry(longLinkEntry); | |||||
putNextEntry(longLinkEntry); | |||||
write(entry.getName().getBytes()); | write(entry.getName().getBytes()); | ||||
write(0); | write(0); | ||||
closeEntry(); | closeEntry(); | ||||
} else if (longFileMode != LONGFILE_TRUNCATE) { | } else if (longFileMode != LONGFILE_TRUNCATE) { | ||||
throw new RuntimeException("file name '" + entry.getName() | |||||
+ "' is too long ( > " | |||||
throw new RuntimeException("file name '" + entry.getName() | |||||
+ "' is too long ( > " | |||||
+ TarConstants.NAMELEN + " bytes)"); | + TarConstants.NAMELEN + " bytes)"); | ||||
} | } | ||||
} | |||||
} | |||||
entry.writeEntryHeader(this.recordBuf); | entry.writeEntryHeader(this.recordBuf); | ||||
this.buffer.writeRecord(this.recordBuf); | this.buffer.writeRecord(this.recordBuf); | ||||
@@ -201,7 +201,7 @@ public class TarOutputStream extends FilterOutputStream { | |||||
} else { | } else { | ||||
this.currSize = (int) entry.getSize(); | this.currSize = (int) entry.getSize(); | ||||
} | } | ||||
} | |||||
} | |||||
/** | /** | ||||
* Close an entry. This method MUST be called for all file | * Close an entry. This method MUST be called for all file | ||||
@@ -222,39 +222,38 @@ public class TarOutputStream extends FilterOutputStream { | |||||
this.currBytes += this.assemLen; | this.currBytes += this.assemLen; | ||||
this.assemLen = 0; | this.assemLen = 0; | ||||
} | |||||
} | |||||
if (this.currBytes < this.currSize) { | if (this.currBytes < this.currSize) { | ||||
throw new IOException("entry closed at '" + this.currBytes | |||||
+ "' before the '" + this.currSize | |||||
throw new IOException("entry closed at '" + this.currBytes | |||||
+ "' before the '" + this.currSize | |||||
+ "' bytes specified in the header were written"); | + "' bytes specified in the header were written"); | ||||
} | |||||
} | |||||
} | |||||
} | |||||
/** | /** | ||||
* Writes a byte to the current tar archive entry. | * Writes a byte to the current tar archive entry. | ||||
* | |||||
* | |||||
* This method simply calls read( byte[], int, int ). | * This method simply calls read( byte[], int, int ). | ||||
* | |||||
* | |||||
* @param b The byte written. | * @param b The byte written. | ||||
*/ | */ | ||||
public void write(int b) throws IOException { | public void write(int b) throws IOException { | ||||
this.oneBuf[0] = (byte) b; | this.oneBuf[0] = (byte) b; | ||||
this.write(this.oneBuf, 0, 1); | this.write(this.oneBuf, 0, 1); | ||||
} | |||||
} | |||||
/** | /** | ||||
* Writes bytes to the current tar archive entry. | * Writes bytes to the current tar archive entry. | ||||
* | |||||
* | |||||
* This method simply calls write( byte[], int, int ). | * This method simply calls write( byte[], int, int ). | ||||
* | |||||
* | |||||
* @param wBuf The buffer to write to the archive. | * @param wBuf The buffer to write to the archive. | ||||
* @return The number of bytes read, or -1 at EOF. | |||||
*/ | */ | ||||
public void write(byte[] wBuf) throws IOException { | public void write(byte[] wBuf) throws IOException { | ||||
this.write(wBuf, 0, wBuf.length); | this.write(wBuf, 0, wBuf.length); | ||||
} | |||||
} | |||||
/** | /** | ||||
* Writes bytes to the current tar archive entry. This method | * Writes bytes to the current tar archive entry. This method | ||||
@@ -264,33 +263,33 @@ public class TarOutputStream extends FilterOutputStream { | |||||
* record buffering required by TarBuffer, and manages buffers | * record buffering required by TarBuffer, and manages buffers | ||||
* that are not a multiple of recordsize in length, including | * that are not a multiple of recordsize in length, including | ||||
* assembling records from small buffers. | * assembling records from small buffers. | ||||
* | |||||
* | |||||
* @param wBuf The buffer to write to the archive. | * @param wBuf The buffer to write to the archive. | ||||
* @param wOffset The offset in the buffer from which to get bytes. | * @param wOffset The offset in the buffer from which to get bytes. | ||||
* @param numToWrite The number of bytes to write. | * @param numToWrite The number of bytes to write. | ||||
*/ | */ | ||||
public void write(byte[] wBuf, int wOffset, int numToWrite) throws IOException { | public void write(byte[] wBuf, int wOffset, int numToWrite) throws IOException { | ||||
if ((this.currBytes + numToWrite) > this.currSize) { | if ((this.currBytes + numToWrite) > this.currSize) { | ||||
throw new IOException("request to write '" + numToWrite | |||||
+ "' bytes exceeds size in header of '" | |||||
throw new IOException("request to write '" + numToWrite | |||||
+ "' bytes exceeds size in header of '" | |||||
+ this.currSize + "' bytes"); | + this.currSize + "' bytes"); | ||||
// | |||||
// | |||||
// We have to deal with assembly!!! | // We have to deal with assembly!!! | ||||
// The programmer can be writing little 32 byte chunks for all | // The programmer can be writing little 32 byte chunks for all | ||||
// we know, and we must assemble complete records for writing. | // we know, and we must assemble complete records for writing. | ||||
// REVIEW Maybe this should be in TarBuffer? Could that help to | // REVIEW Maybe this should be in TarBuffer? Could that help to | ||||
// eliminate some of the buffer copying. | // eliminate some of the buffer copying. | ||||
// | |||||
} | |||||
// | |||||
} | |||||
if (this.assemLen > 0) { | if (this.assemLen > 0) { | ||||
if ((this.assemLen + numToWrite) >= this.recordBuf.length) { | if ((this.assemLen + numToWrite) >= this.recordBuf.length) { | ||||
int aLen = this.recordBuf.length - this.assemLen; | int aLen = this.recordBuf.length - this.assemLen; | ||||
System.arraycopy(this.assemBuf, 0, this.recordBuf, 0, | |||||
System.arraycopy(this.assemBuf, 0, this.recordBuf, 0, | |||||
this.assemLen); | this.assemLen); | ||||
System.arraycopy(wBuf, wOffset, this.recordBuf, | |||||
System.arraycopy(wBuf, wOffset, this.recordBuf, | |||||
this.assemLen, aLen); | this.assemLen, aLen); | ||||
this.buffer.writeRecord(this.recordBuf); | this.buffer.writeRecord(this.recordBuf); | ||||
@@ -299,29 +298,29 @@ public class TarOutputStream extends FilterOutputStream { | |||||
numToWrite -= aLen; | numToWrite -= aLen; | ||||
this.assemLen = 0; | this.assemLen = 0; | ||||
} else { | } else { | ||||
System.arraycopy(wBuf, wOffset, this.assemBuf, this.assemLen, | |||||
System.arraycopy(wBuf, wOffset, this.assemBuf, this.assemLen, | |||||
numToWrite); | numToWrite); | ||||
wOffset += numToWrite; | wOffset += numToWrite; | ||||
this.assemLen += numToWrite; | this.assemLen += numToWrite; | ||||
numToWrite -= numToWrite; | numToWrite -= numToWrite; | ||||
} | |||||
} | |||||
} | |||||
} | |||||
// | |||||
// | |||||
// When we get here we have EITHER: | // When we get here we have EITHER: | ||||
// o An empty "assemble" buffer. | // o An empty "assemble" buffer. | ||||
// o No bytes to write (numToWrite == 0) | // o No bytes to write (numToWrite == 0) | ||||
// | |||||
// | |||||
while (numToWrite > 0) { | while (numToWrite > 0) { | ||||
if (numToWrite < this.recordBuf.length) { | if (numToWrite < this.recordBuf.length) { | ||||
System.arraycopy(wBuf, wOffset, this.assemBuf, this.assemLen, | |||||
System.arraycopy(wBuf, wOffset, this.assemBuf, this.assemLen, | |||||
numToWrite); | numToWrite); | ||||
this.assemLen += numToWrite; | this.assemLen += numToWrite; | ||||
break; | break; | ||||
} | |||||
} | |||||
this.buffer.writeRecord(wBuf, wOffset); | this.buffer.writeRecord(wBuf, wOffset); | ||||
@@ -330,8 +329,8 @@ public class TarOutputStream extends FilterOutputStream { | |||||
this.currBytes += num; | this.currBytes += num; | ||||
numToWrite -= num; | numToWrite -= num; | ||||
wOffset += num; | wOffset += num; | ||||
} | |||||
} | |||||
} | |||||
} | |||||
/** | /** | ||||
* Write an EOF (end of archive) record to the tar archive. | * Write an EOF (end of archive) record to the tar archive. | ||||
@@ -343,7 +342,7 @@ public class TarOutputStream extends FilterOutputStream { | |||||
} | } | ||||
this.buffer.writeRecord(this.recordBuf); | this.buffer.writeRecord(this.recordBuf); | ||||
} | |||||
} | |||||
} | } | ||||
@@ -53,7 +53,7 @@ | |||||
*/ | */ | ||||
/* | /* | ||||
* This package is based on the work done by Timothy Gerard Endres | |||||
* This package is based on the work done by Timothy Gerard Endres | |||||
* (time@ice.com) to whom the Ant project is very grateful for his great code. | * (time@ice.com) to whom the Ant project is very grateful for his great code. | ||||
*/ | */ | ||||
@@ -61,7 +61,7 @@ package org.apache.tools.tar; | |||||
/** | /** | ||||
* This class provides static utility methods to work with byte streams. | * This class provides static utility methods to work with byte streams. | ||||
* | |||||
* | |||||
* @author Timothy Gerard Endres <a href="mailto:time@ice.com">time@ice.com</a> | * @author Timothy Gerard Endres <a href="mailto:time@ice.com">time@ice.com</a> | ||||
* @author Stefano Mazzocchi <a href="mailto:stefano@apache.org">stefano@apache.org</a> | * @author Stefano Mazzocchi <a href="mailto:stefano@apache.org">stefano@apache.org</a> | ||||
*/ | */ | ||||
@@ -70,7 +70,7 @@ public class TarUtils { | |||||
/** | /** | ||||
* Parse an octal string from a header buffer. This is used for the | * Parse an octal string from a header buffer. This is used for the | ||||
* file permission mode value. | * file permission mode value. | ||||
* | |||||
* | |||||
* @param header The header buffer from which to parse. | * @param header The header buffer from which to parse. | ||||
* @param offset The offset into the buffer from which to parse. | * @param offset The offset into the buffer from which to parse. | ||||
* @param length The number of header bytes to parse. | * @param length The number of header bytes to parse. | ||||
@@ -84,28 +84,28 @@ public class TarUtils { | |||||
for (int i = offset; i < end; ++i) { | for (int i = offset; i < end; ++i) { | ||||
if (header[i] == 0) { | if (header[i] == 0) { | ||||
break; | break; | ||||
} | |||||
} | |||||
if (header[i] == (byte) ' ' || header[i] == '0') { | if (header[i] == (byte) ' ' || header[i] == '0') { | ||||
if (stillPadding) { | if (stillPadding) { | ||||
continue; | continue; | ||||
} | |||||
} | |||||
if (header[i] == (byte) ' ') { | if (header[i] == (byte) ' ') { | ||||
break; | break; | ||||
} | |||||
} | |||||
} | |||||
} | |||||
stillPadding = false; | stillPadding = false; | ||||
result = (result << 3) + (header[i] - '0'); | result = (result << 3) + (header[i] - '0'); | ||||
} | |||||
} | |||||
return result; | return result; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Parse an entry name from a header buffer. | * Parse an entry name from a header buffer. | ||||
* | |||||
* | |||||
* @param header The header buffer from which to parse. | * @param header The header buffer from which to parse. | ||||
* @param offset The offset into the buffer from which to parse. | * @param offset The offset into the buffer from which to parse. | ||||
* @param length The number of header bytes to parse. | * @param length The number of header bytes to parse. | ||||
@@ -118,17 +118,17 @@ public class TarUtils { | |||||
for (int i = offset; i < end; ++i) { | for (int i = offset; i < end; ++i) { | ||||
if (header[i] == 0) { | if (header[i] == 0) { | ||||
break; | break; | ||||
} | |||||
} | |||||
result.append((char) header[i]); | result.append((char) header[i]); | ||||
} | |||||
} | |||||
return result; | return result; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Determine the number of bytes in an entry name. | * Determine the number of bytes in an entry name. | ||||
* | |||||
* | |||||
* @param header The header buffer from which to parse. | * @param header The header buffer from which to parse. | ||||
* @param offset The offset into the buffer from which to parse. | * @param offset The offset into the buffer from which to parse. | ||||
* @param length The number of header bytes to parse. | * @param length The number of header bytes to parse. | ||||
@@ -139,18 +139,18 @@ public class TarUtils { | |||||
for (i = 0; i < length && i < name.length(); ++i) { | for (i = 0; i < length && i < name.length(); ++i) { | ||||
buf[offset + i] = (byte) name.charAt(i); | buf[offset + i] = (byte) name.charAt(i); | ||||
} | |||||
} | |||||
for (; i < length; ++i) { | for (; i < length; ++i) { | ||||
buf[offset + i] = 0; | buf[offset + i] = 0; | ||||
} | |||||
} | |||||
return offset + length; | return offset + length; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Parse an octal integer from a header buffer. | * Parse an octal integer from a header buffer. | ||||
* | |||||
* | |||||
* @param header The header buffer from which to parse. | * @param header The header buffer from which to parse. | ||||
* @param offset The offset into the buffer from which to parse. | * @param offset The offset into the buffer from which to parse. | ||||
* @param length The number of header bytes to parse. | * @param length The number of header bytes to parse. | ||||
@@ -171,19 +171,19 @@ public class TarUtils { | |||||
for (long val = value; idx >= 0 && val > 0; --idx) { | for (long val = value; idx >= 0 && val > 0; --idx) { | ||||
buf[offset + idx] = (byte) ((byte) '0' + (byte) (val & 7)); | buf[offset + idx] = (byte) ((byte) '0' + (byte) (val & 7)); | ||||
val = val >> 3; | val = val >> 3; | ||||
} | |||||
} | |||||
} | |||||
} | |||||
for (; idx >= 0; --idx) { | for (; idx >= 0; --idx) { | ||||
buf[offset + idx] = (byte) ' '; | buf[offset + idx] = (byte) ' '; | ||||
} | |||||
} | |||||
return offset + length; | return offset + length; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Parse an octal long integer from a header buffer. | * Parse an octal long integer from a header buffer. | ||||
* | |||||
* | |||||
* @param header The header buffer from which to parse. | * @param header The header buffer from which to parse. | ||||
* @param offset The offset into the buffer from which to parse. | * @param offset The offset into the buffer from which to parse. | ||||
* @param length The number of header bytes to parse. | * @param length The number of header bytes to parse. | ||||
@@ -196,11 +196,11 @@ public class TarUtils { | |||||
System.arraycopy(temp, 0, buf, offset, length); | System.arraycopy(temp, 0, buf, offset, length); | ||||
return offset + length; | return offset + length; | ||||
} | |||||
} | |||||
/** | /** | ||||
* Parse the checksum octal integer from a header buffer. | * Parse the checksum octal integer from a header buffer. | ||||
* | |||||
* | |||||
* @param header The header buffer from which to parse. | * @param header The header buffer from which to parse. | ||||
* @param offset The offset into the buffer from which to parse. | * @param offset The offset into the buffer from which to parse. | ||||
* @param length The number of header bytes to parse. | * @param length The number of header bytes to parse. | ||||
@@ -214,20 +214,20 @@ public class TarUtils { | |||||
return offset + length; | return offset + length; | ||||
} | } | ||||
/** | |||||
/** | |||||
* Compute the checksum of a tar entry header. | * Compute the checksum of a tar entry header. | ||||
* | |||||
* | |||||
* @param buf The tar entry's header buffer. | * @param buf The tar entry's header buffer. | ||||
* @return The computed checksum. | * @return The computed checksum. | ||||
*/ | |||||
*/ | |||||
public static long computeCheckSum(byte[] buf) { | public static long computeCheckSum(byte[] buf) { | ||||
long sum = 0; | long sum = 0; | ||||
for (int i = 0; i < buf.length; ++i) { | for (int i = 0; i < buf.length; ++i) { | ||||
sum += 255 & buf[i]; | sum += 255 & buf[i]; | ||||
} | |||||
} | |||||
return sum; | return sum; | ||||
} | |||||
} | |||||
} | } |