Description
Unzips a zipfile to a destination directory.
License
LGPL
Parameter
| Parameter | Description |
|---|
| zip | the file to unzip |
| fileDir | the destination directory for zipfile contents |
Exception
| Parameter | Description |
|---|
| FileNotFoundException | an exception |
| IOException | an exception |
Declaration
public static void unzip(ZipFile zip, File fileDir) throws FileNotFoundException, IOException
Method Source Code
//package com.java2s;
/*******************************************************************************
* CogTool Copyright Notice and Distribution Terms
* CogTool 1.3, Copyright (c) 2005-2013 Carnegie Mellon University
* This software is distributed under the terms of the FSF Lesser
* Gnu Public License (see LGPL.txt). //w w w. j a v a 2s. c o m
*
* CogTool is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* CogTool is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with CogTool; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* CogTool makes use of several third-party components, with the
* following notices:
*
* Eclipse SWT version 3.448
* Eclipse GEF Draw2D version 3.2.1
*
* Unless otherwise indicated, all Content made available by the Eclipse
* Foundation is provided to you under the terms and conditions of the Eclipse
* Public License Version 1.0 ("EPL"). A copy of the EPL is provided with this
* Content and is also available at http://www.eclipse.org/legal/epl-v10.html.
*
* CLISP version 2.38
*
* Copyright (c) Sam Steingold, Bruno Haible 2001-2006
* This software is distributed under the terms of the FSF Gnu Public License.
* See COPYRIGHT file in clisp installation folder for more information.
*
* ACT-R 6.0
*
* Copyright (c) 1998-2007 Dan Bothell, Mike Byrne, Christian Lebiere &
* John R Anderson.
* This software is distributed under the terms of the FSF Lesser
* Gnu Public License (see LGPL.txt).
*
* Apache Jakarta Commons-Lang 2.1
*
* This product contains software developed by the Apache Software Foundation
* (http://www.apache.org/)
*
* jopt-simple version 1.0
*
* Copyright (c) 2004-2013 Paul R. Holser, Jr.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Mozilla XULRunner 1.9.0.5
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/.
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* The J2SE(TM) Java Runtime Environment version 5.0
*
* Copyright 2009 Sun Microsystems, Inc., 4150
* Network Circle, Santa Clara, California 95054, U.S.A. All
* rights reserved. U.S.
* See the LICENSE file in the jre folder for more information.
******************************************************************************/
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
public class Main {
/**
* Unzips a zipfile to a destination directory.
* @param zip the file to unzip
* @param fileDir the destination directory for zipfile contents
* @throws FileNotFoundException
* @throws IOException
*/
public static void unzip(ZipFile zip, File fileDir) throws FileNotFoundException, IOException {
// Read out all entries from ZipFile via input streams
for (Enumeration<? extends ZipEntry> en = zip.entries(); en.hasMoreElements();) {
ZipEntry ze = en.nextElement();
// Get info from file entry
long size = ze.getSize();
// Create File in fileDir for unpacked entry
String name = ze.getName();
// System.out.println("Unzipping: " + name);
File zeFile = new File(fileDir, name);
// Check for a trailing slash to see if this is a directory entry
if (name.charAt(name.length() - 1) == '/') {
// If this entry is a directory, make it
zeFile.mkdirs();
} else {
// if this entry is a file, make its parent directories, then it
zeFile.getParentFile().mkdirs();
zeFile.createNewFile();
// Create plus OutputStream to the new file
FileOutputStream fout = null;
OutputStream out = null;
// Get ZipInputStream for reading data
InputStream zin = null;
try {
fout = new FileOutputStream(zeFile);
out = new BufferedOutputStream(fout);
zin = zip.getInputStream(ze);
// Set modification time
zeFile.setLastModified(ze.getTime());
// Copy data from zin to out, 100k at a time
int chunkSize = 100 * 1024;
byte[] buff = new byte[chunkSize];
int len = chunkSize;
for (; size > 0; size -= len) {
if (size < chunkSize) {
len = (int) size;
} else {
len = chunkSize;
}
int actualBytes = 0;
int off = 0;
// System.out.print("" + '\n' + name + ' ');
do {
actualBytes = zin.read(buff, off, len);
if (actualBytes == -1) {
out.write(buff, off, len);
// System.out.print("!" + len + ':' + actualBytes + ':' + off + ' ');
throw new RuntimeException("Bad math in unzip!");
} else {
out.write(buff, off, actualBytes);
// System.out.print("" + len + ':' + actualBytes + ':' + off + ' ');
}
len -= actualBytes;
size -= actualBytes;
off += actualBytes;
} while ((len > 0));
}
} finally {
// Close the streams
if (fout != null) {
if (out != null) {
if (zin != null) {
zin.close();
}
out.close();
}
fout.close();
}
}
}
}
}
}
Related
- unzip(byte[] zippedBytes)
- unzip(File srcFile, File toDir)
- unzip(final File zip, final File patchDir)
- unzip(final File zipFile, final String suffix)
- unzip(ZipEntry entry, ZipFile zipfile, File explodedDir)
- unzip(ZipFile zipFile, File dest)
- unzip(ZipFile zipFile, File destDir)
- unzip(ZipFile zipFile, File destDirectory)
- unzip(ZipFile zipFile, File dstDir)