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/*******************************************************************************
* Copyright (c) 2007 compeople AG and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* compeople AG (Stefan Liebig) - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.p2.sar;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
import org.eclipse.equinox.internal.p2.sar.SarConstants;
import org.eclipse.equinox.internal.p2.sar.SarEntry;
import org.eclipse.equinox.internal.p2.sar.SarInputStream;
import org.eclipse.equinox.internal.p2.sar.SarOutputStream;
/**
* Helper class for converting Zips/Jars to Sars and vice versa.
*/
public class SarUtil {
private static final int BUFFER_SIZE = 8 * 1024;
private static final boolean DEBUG = SarConstants.DEBUG;
/**
*
*/
private SarUtil() {
// utility class
}
/**
* Normalize the given zip/jar.
*
* @param zipSource
* @param zipTarget
* @throws IOException
*/
public static void normalize(File zipSource, File zipTarget)
throws IOException {
File tempSar = File.createTempFile("temp", ".sar");
try {
zipToSar(zipSource, tempSar);
sarToZip(tempSar, zipTarget);
} finally {
tempSar.delete();
}
}
/**
* Normalize the given zip/jar.
*
* @param zipSource
* @param zipTarget
* @throws IOException
*/
public static void normalize(InputStream zipSource, OutputStream zipTarget)
throws IOException {
DirectByteArrayOutputStream tempSar = new DirectByteArrayOutputStream();
zipToSar(zipSource, tempSar);
sarToZip(tempSar.getInputStream(), zipTarget);
}
/**
* @param zipFile
* @return
* @throws IOException
*/
public static void zipToSar(File zipFile, File sarFile) throws IOException {
InputStream zipInputStream = new BufferedInputStream(
new FileInputStream(zipFile));
OutputStream sarOutputStream = new BufferedOutputStream(
new FileOutputStream(sarFile));
SarUtil.zipToSar(zipInputStream, sarOutputStream);
}
/**
* @param zippedInputStream
* @param saredOutputStream
* @throws IOException
*/
public static void zipToSar(InputStream zippedInputStream,
OutputStream saredOutputStream) throws IOException {
zipToSar(zippedInputStream, true, saredOutputStream, true);
}
/**
* @param zippedInputStream
* @param closeIn
* @param saredOutputStream
* @param closeOut
* @throws IOException
*/
public static void zipToSar(InputStream zippedInputStream, boolean closeIn,
OutputStream saredOutputStream, boolean closeOut)
throws IOException {
zipToSarNoClose(zippedInputStream, saredOutputStream);
if (closeIn)
zippedInputStream.close();
if (closeOut)
saredOutputStream.close();
}
/**
* @param sarFile
* @param zipFile
* @throws IOException
*/
public static void sarToZip(File sarFile, File zipFile) throws IOException {
InputStream saredInputStream = new BufferedInputStream(
new FileInputStream(sarFile));
OutputStream zippedOutputStream = new BufferedOutputStream(
new FileOutputStream(zipFile));
sarToZip(saredInputStream, zippedOutputStream);
}
/**
* @param saredInputStream
* @param zippedOutputStream
* @param level
* @throws IOException
*/
public static void sarToZip(InputStream saredInputStream,
OutputStream zippedOutputStream) throws IOException {
sarToZip(saredInputStream, true, zippedOutputStream, true);
}
/**
* @param saredInputStream
* @param closeIn
* @param zippedOutputStream
* @param closeOut
* @throws IOException
*/
public static void sarToZip(InputStream saredInputStream, boolean closeIn,
OutputStream zippedOutputStream, boolean closeOut)
throws IOException {
sarToZipNoClose(saredInputStream, zippedOutputStream);
if (closeIn)
saredInputStream.close();
if (closeOut)
zippedOutputStream.close();
}
/**
* @param zippedInputStream
* @param saredOutputStream
* @throws IOException
*/
private static void zipToSarNoClose(InputStream zippedInputStream,
OutputStream saredOutputStream) throws IOException {
ZipInputStream zipInputStream = new ZipInputStream(zippedInputStream);
SarOutputStream sarOutputStream = new SarOutputStream(saredOutputStream);
ZipEntry zipEntry;
byte[] buf = new byte[BUFFER_SIZE];
while ((zipEntry = zipInputStream.getNextEntry()) != null) {
boolean isZip = isZip(zipEntry);
SarEntry sarEntry = new SarEntry(zipEntry, isZip);
sarOutputStream.putNextEntry(sarEntry);
if (isZip) {
zipToSarNoClose(zipInputStream, sarOutputStream);
} else {
int read;
while ((read = zipInputStream.read(buf)) != -1) {
if (DEBUG) {
System.out.println("Content: "
+ new String(buf, 0, read));
}
sarOutputStream.write(buf, 0, read);
}
}
zipInputStream.closeEntry();
sarOutputStream.closeEntry();
}
sarOutputStream.finish();
}
/**
* @param saredInputStream
* @param zippedOutputStream
* @param level
* @throws IOException
*/
private static void sarToZipNoClose(InputStream saredInputStream,
OutputStream zippedOutputStream) throws IOException {
SarInputStream sarInputStream = new SarInputStream(saredInputStream);
ZipOutputStream zipOutputStream = new ZipOutputStream(
zippedOutputStream);
SarEntry sarEntry;
byte[] buf = new byte[BUFFER_SIZE];
while ((sarEntry = sarInputStream.getNextEntry()) != null) {
ZipEntry zipEntry = new ZipEntry(sarEntry);
zipOutputStream.putNextEntry(zipEntry);
if (sarEntry.isZip()) {
sarToZipNoClose(sarInputStream, zipOutputStream);
} else {
int read;
while ((read = sarInputStream.read(buf)) != -1) {
if (DEBUG) {
System.out.println("Content: "
+ new String(buf, 0, read));
}
zipOutputStream.write(buf, 0, read);
}
}
sarInputStream.closeEntry();
zipOutputStream.closeEntry();
}
zipOutputStream.finish();
}
private static boolean isZip(ZipEntry zipEntry) {
String name = zipEntry.getName().toLowerCase();
return name.endsWith(".zip") || name.endsWith(".jar");
}
}
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