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git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@277305 13f79535-47bb-0310-9956-ffa450edef68
master
Peter Reilly 20 years ago
parent
875e8f9029
commit
5e049f635b
4 changed files with 114 additions and 83 deletions
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  1. +56
    -54
      src/main/org/apache/tools/zip/ZipFile.java
  2. +6
    -5
      src/main/org/apache/tools/zip/ZipLong.java
  3. +46
    -19
      src/main/org/apache/tools/zip/ZipOutputStream.java
  4. +6
    -5
      src/main/org/apache/tools/zip/ZipShort.java

+ 56
- 54
src/main/org/apache/tools/zip/ZipFile.java View File

@@ -1,5 +1,5 @@
/*
* Copyright 2003-2004 The Apache Software Foundation
* Copyright 2003-2005 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -73,7 +73,7 @@ public class ZipFile {

private static final class OffsetEntry {
long headerOffset = -1;
long dataOffset = - 1;
long dataOffset = -1;
}

/**
@@ -198,11 +198,13 @@ public class ZipFile {
* Returns an InputStream for reading the contents of the given entry.
* @param ze the entry to get the stream for.
* @return a stream to read the entry from.
* @throws IOException if unable to create an input stream from the zipenty
* @throws ZipException if the zipentry has an unsupported compression method
*/
public InputStream getInputStream(ZipEntry ze)
throws IOException, ZipException {
OffsetEntry offsetEntry = (OffsetEntry)entries.get(ze);
if (offsetEntry == null){
OffsetEntry offsetEntry = (OffsetEntry) entries.get(ze);
if (offsetEntry == null) {
return null;
}
long start = offsetEntry.dataOffset;
@@ -221,22 +223,22 @@ public class ZipFile {
}

private static final int CFH_LEN =
/* version made by */ 2 +
/* version needed to extract */ 2 +
/* general purpose bit flag */ 2 +
/* compression method */ 2 +
/* last mod file time */ 2 +
/* last mod file date */ 2 +
/* crc-32 */ 4 +
/* compressed size */ 4 +
/* uncompressed size */ 4 +
/* filename length */ 2 +
/* extra field length */ 2 +
/* file comment length */ 2 +
/* disk number start */ 2 +
/* internal file attributes */ 2 +
/* external file attributes */ 4 +
/* relative offset of local header */ 4;
/* version made by */ 2
/* version needed to extract */ + 2
/* general purpose bit flag */ + 2
/* compression method */ + 2
/* last mod file time */ + 2
/* last mod file date */ + 2
/* crc-32 */ + 4
/* compressed size */ + 4
/* uncompressed size */ + 4
/* filename length */ + 2
/* extra field length */ + 2
/* file comment length */ + 2
/* disk number start */ + 2
/* internal file attributes */ + 2
/* external file attributes */ + 4
/* relative offset of local header */ + 4;

/**
* Reads the central directory of the given archive and populates
@@ -255,8 +257,8 @@ public class ZipFile {
byte[] signatureBytes = new byte[4];
archive.readFully(signatureBytes);
long sig = ZipLong.getValue(signatureBytes);
final long cfh_sig = ZipLong.getValue(ZipOutputStream.CFH_SIG);
while (sig == cfh_sig) {
final long cfhSig = ZipLong.getValue(ZipOutputStream.CFH_SIG);
while (sig == cfhSig) {
archive.readFully(cfh);
int off = 0;
ZipEntry ze = new ZipEntry();
@@ -328,30 +330,30 @@ public class ZipFile {
}

private static final int MIN_EOCD_SIZE =
/* end of central dir signature */ 4 +
/* number of this disk */ 2 +
/* number of the disk with the */ +
/* start of the central directory */ 2 +
/* total number of entries in */ +
/* the central dir on this disk */ 2 +
/* total number of entries in */ +
/* the central dir */ 2 +
/* size of the central directory */ 4 +
/* offset of start of central */ +
/* directory with respect to */ +
/* the starting disk number */ 4 +
/* zipfile comment length */ 2;
/* end of central dir signature */ 4
/* number of this disk */ + 2
/* number of the disk with the */
/* start of the central directory */ + 2
/* total number of entries in */
/* the central dir on this disk */ + 2
/* total number of entries in */
/* the central dir */ + 2
/* size of the central directory */ + 4
/* offset of start of central */
/* directory with respect to */
/* the starting disk number */ + 4
/* zipfile comment length */ + 2;

private static final int CFD_LOCATOR_OFFSET =
/* end of central dir signature */ 4 +
/* number of this disk */ 2 +
/* number of the disk with the */ +
/* start of the central directory */ 2 +
/* total number of entries in */ +
/* the central dir on this disk */ 2 +
/* total number of entries in */ +
/* the central dir */ 2 +
/* size of the central directory */ 4;
/* end of central dir signature */ 4
/* number of this disk */ + 2
/* number of the disk with the */
/* start of the central directory */ + 2
/* total number of entries in */
/* the central dir on this disk */ + 2
/* total number of entries in */
/* the central dir */ + 2
/* size of the central directory */ + 4;

/**
* Searches for the "End of central dir record", parses
@@ -396,15 +398,15 @@ public class ZipFile {
* filename" entry.
*/
private static final long LFH_OFFSET_FOR_FILENAME_LENGTH =
/* local file header signature */ 4 +
/* version needed to extract */ 2 +
/* general purpose bit flag */ 2 +
/* compression method */ 2 +
/* last mod file time */ 2 +
/* last mod file date */ 2 +
/* crc-32 */ 4 +
/* compressed size */ 4 +
/* uncompressed size */ 4;
/* local file header signature */ 4
/* version needed to extract */ + 2
/* general purpose bit flag */ + 2
/* compression method */ + 2
/* last mod file time */ + 2
/* last mod file date */ + 2
/* crc-32 */ + 4
/* compressed size */ + 4
/* uncompressed size */ + 4;

/**
* Walks through all recorded entries and adds the data available
@@ -418,7 +420,7 @@ public class ZipFile {
Enumeration e = getEntries();
while (e.hasMoreElements()) {
ZipEntry ze = (ZipEntry) e.nextElement();
OffsetEntry offsetEntry = (OffsetEntry)entries.get(ze);
OffsetEntry offsetEntry = (OffsetEntry) entries.get(ze);
long offset = offsetEntry.headerOffset;
archive.seek(offset + LFH_OFFSET_FOR_FILENAME_LENGTH);
byte[] b = new byte[2];


+ 6
- 5
src/main/org/apache/tools/zip/ZipLong.java View File

@@ -1,5 +1,5 @@
/*
* Copyright 2001-2002,2004 The Apache Software Foundation
* Copyright 2001-2002,2004-2005 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -78,12 +78,12 @@ public final class ZipLong implements Cloneable {
* @param value the value to convert
* @return value as four bytes in big endian byte order
*/
public static byte[] getBytes(long value){
public static byte[] getBytes(long value) {
byte[] result = new byte[4];
result[0] = (byte) ((value & 0xFF));
result[1] = (byte) ((value & 0xFF00) >> 8);
result[2] = (byte) ((value & 0xFF0000) >> 16);
result[3] = (byte) ((value & 0xFF000000l) >> 24);
result[3] = (byte) ((value & 0xFF000000L) >> 24);
return result;
}

@@ -93,7 +93,7 @@ public final class ZipLong implements Cloneable {
* @param offset the offset to start
* @return the correspondanding Java long value
*/
public static long getValue(byte[] bytes, int offset){
public static long getValue(byte[] bytes, int offset) {
long value = (bytes[offset + 3] << 24) & 0xFF000000L;
value += (bytes[offset + 2] << 16) & 0xFF0000;
value += (bytes[offset + 1] << 8) & 0xFF00;
@@ -106,13 +106,14 @@ public final class ZipLong implements Cloneable {
* @param bytes the array of bytes
* @return the correspondanding Java long value
*/
public static long getValue(byte[] bytes){
public static long getValue(byte[] bytes) {
return getValue(bytes, 0);
}

/**
* Override to make two instances with same value equal.
* @param o an object to compare
* @return true if the objects are equal
* @since 1.1
*/
public boolean equals(Object o) {


+ 46
- 19
src/main/org/apache/tools/zip/ZipOutputStream.java View File

@@ -1,5 +1,5 @@
/*
* Copyright 2001-2004 The Apache Software Foundation
* Copyright 2001-2005 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -27,7 +27,6 @@ import java.io.UnsupportedEncodingException;
import java.util.Date;
import java.util.Hashtable;
import java.util.Vector;
import java.util.Calendar;
import java.util.zip.CRC32;
import java.util.zip.Deflater;
import java.util.zip.ZipException;
@@ -220,7 +219,7 @@ public class ZipOutputStream extends FilterOutputStream {

/**
* Creates a new ZIP OutputStream filtering the underlying stream.
*
* @param out the outputstream to zip
* @since 1.1
*/
public ZipOutputStream(OutputStream out) {
@@ -230,8 +229,9 @@ public class ZipOutputStream extends FilterOutputStream {
/**
* Creates a new ZIP OutputStream writing to a File. Will use
* random access if possible.
*
* @param file the file to zip to
* @since 1.14
* @throws IOException on error
*/
public ZipOutputStream(File file) throws IOException {
super(null);
@@ -259,7 +259,7 @@ public class ZipOutputStream extends FilterOutputStream {
* <p>For seekable streams, you don't need to calculate the CRC or
* uncompressed size for {@link #STORED} entries before
* invoking {@link #putNextEntry}.
*
* @return true if seekable
* @since 1.17
*/
public boolean isSeekable() {
@@ -272,7 +272,7 @@ public class ZipOutputStream extends FilterOutputStream {
* <p>For a list of possible values see <a
* href="http://java.sun.com/products/jdk/1.2/docs/guide/internat/encoding.doc.html">http://java.sun.com/products/jdk/1.2/docs/guide/internat/encoding.doc.html</a>.
* Defaults to the platform's default character encoding.</p>
*
* @param encoding the encoding value
* @since 1.3
*/
public void setEncoding(String encoding) {
@@ -295,6 +295,7 @@ public class ZipOutputStream extends FilterOutputStream {
* underlying stream.
*
* @since 1.1
* @throws IOException on error
*/
public void finish() throws IOException {
closeEntry();
@@ -312,6 +313,7 @@ public class ZipOutputStream extends FilterOutputStream {
* Writes all necessary data for this entry.
*
* @since 1.1
* @throws IOException on error
*/
public void closeEntry() throws IOException {
if (entry == null) {
@@ -376,8 +378,9 @@ public class ZipOutputStream extends FilterOutputStream {

/**
* Begin writing next entry.
*
* @param ze the entry to write
* @since 1.1
* @throws IOException on error
*/
public void putNextEntry(ZipEntry ze) throws IOException {
closeEntry();
@@ -416,7 +419,7 @@ public class ZipOutputStream extends FilterOutputStream {

/**
* Set the file comment.
*
* @param comment the comment
* @since 1.1
*/
public void setComment(String comment) {
@@ -427,7 +430,7 @@ public class ZipOutputStream extends FilterOutputStream {
* Sets the compression level for subsequent entries.
*
* <p>Default is Deflater.DEFAULT_COMPRESSION.</p>
*
* @param level the compression level
* @since 1.1
*/
public void setLevel(int level) {
@@ -439,7 +442,7 @@ public class ZipOutputStream extends FilterOutputStream {
* Sets the default compression method for subsequent entries.
*
* <p>Default is DEFLATED.</p>
*
* @param method an <code>int</code> from java.util.zip.ZipEntry
* @since 1.1
*/
public void setMethod(int method) {
@@ -448,6 +451,10 @@ public class ZipOutputStream extends FilterOutputStream {

/**
* Writes bytes to ZIP entry.
* @param b the byte array to write
* @param offset the start position to write from
* @param length the number of bytes to write
* @throws IOException on error
*/
public void write(byte[] b, int offset, int length) throws IOException {
if (entry.getMethod() == DEFLATED) {
@@ -470,8 +477,9 @@ public class ZipOutputStream extends FilterOutputStream {
* Writes a single byte to ZIP entry.
*
* <p>Delegates to the three arg method.</p>
*
* @param b the byte to write
* @since 1.14
* @throws IOException on error
*/
public void write(int b) throws IOException {
byte[] buff = new byte[1];
@@ -540,6 +548,7 @@ public class ZipOutputStream extends FilterOutputStream {

/**
* Writes next block of compressed data to the output stream.
* @throws IOException on error
*
* @since 1.14
*/
@@ -552,6 +561,8 @@ public class ZipOutputStream extends FilterOutputStream {

/**
* Writes the local file header entry
* @param ze the entry to write
* @throws IOException on error
*
* @since 1.1
*/
@@ -563,7 +574,7 @@ public class ZipOutputStream extends FilterOutputStream {

//store method in local variable to prevent multiple method calls
final int zipMethod = ze.getMethod();
// version needed to extract
// general purpose bit flag
if (zipMethod == DEFLATED && raf == null) {
@@ -624,7 +635,9 @@ public class ZipOutputStream extends FilterOutputStream {
}

/**
* Writes the data descriptor entry
* Writes the data descriptor entry.
* @param ze the entry to write
* @throws IOException on error
*
* @since 1.1
*/
@@ -640,7 +653,9 @@ public class ZipOutputStream extends FilterOutputStream {
}

/**
* Writes the central file header entry
* Writes the central file header entry.
* @param ze the entry to write
* @throws IOException on error
*
* @since 1.1
*/
@@ -732,7 +747,8 @@ public class ZipOutputStream extends FilterOutputStream {
}

/**
* Writes the &quot;End of central dir record&quot;
* Writes the &quot;End of central dir record&quot;.
* @throws IOException on error
*
* @since 1.1
*/
@@ -767,7 +783,8 @@ public class ZipOutputStream extends FilterOutputStream {

/**
* Convert a Date object to a DOS date/time field.
*
* @param time the <code>Date</code> to convert
* @return the date as a <code>ZipLong</code>
* @since 1.1
*/
protected static ZipLong toDosTime(Date time) {
@@ -778,7 +795,8 @@ public class ZipOutputStream extends FilterOutputStream {
* Convert a Date object to a DOS date/time field.
*
* <p>Stolen from InfoZip's <code>fileio.c</code></p>
*
* @param t number of milliseconds since the epoch
* @return the date as a byte array
* @since 1.26
*/
protected static byte[] toDosTime(long t) {
@@ -800,6 +818,9 @@ public class ZipOutputStream extends FilterOutputStream {
/**
* Retrieve the bytes for the given String in the encoding set for
* this Stream.
* @param name the string to get bytes from
* @return the bytes as a byte array
* @throws ZipException on error
*
* @since 1.3
*/
@@ -816,7 +837,9 @@ public class ZipOutputStream extends FilterOutputStream {
}

/**
* Write bytes to output or random access file
* Write bytes to output or random access file.
* @param data the byte array to write
* @throws IOException on error
*
* @since 1.14
*/
@@ -825,7 +848,11 @@ public class ZipOutputStream extends FilterOutputStream {
}

/**
* Write bytes to output or random access file
* Write bytes to output or random access file.
* @param data the byte array to write
* @param offset the start position to write from
* @param length the number of bytes to write
* @throws IOException on error
*
* @since 1.14
*/


+ 6
- 5
src/main/org/apache/tools/zip/ZipShort.java View File

@@ -1,5 +1,5 @@
/*
* Copyright 2001-2002,2004 The Apache Software Foundation
* Copyright 2001-2002,2004-2005 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -81,7 +81,7 @@ public final class ZipShort implements Cloneable {
* @param value the Java int to convert to bytes
* @return the converted int as a byte array in big endian byte order
*/
public static byte[] getBytes(int value){
public static byte[] getBytes(int value) {
byte[] result = new byte[2];
result[0] = (byte) (value & 0xFF);
result[1] = (byte) ((value & 0xFF00) >> 8);
@@ -94,7 +94,7 @@ public final class ZipShort implements Cloneable {
* @param offset the offset to start
* @return the correspondanding java int value
*/
public static int getValue(byte[] bytes, int offset){
public static int getValue(byte[] bytes, int offset) {
int value = (bytes[offset + 1] << 8) & 0xFF00;
value += (bytes[offset] & 0xFF);
return value;
@@ -105,13 +105,14 @@ public final class ZipShort implements Cloneable {
* @param bytes the array of bytes
* @return the correspondanding java int value
*/
public static int getValue(byte[] bytes){
return getValue(bytes, 0);
public static int getValue(byte[] bytes) {
return getValue(bytes, 0);
}

/**
* Override to make two instances with same value equal.
* @param o an object to compare
* @return true if the objects are equal
* @since 1.1
*/
public boolean equals(Object o) {


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