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package org.codehaus.plexus.util;
/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.codehaus.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. The names "The Jakarta Project", "Ant", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [email protected].
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* .
*/
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.util.Date;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
/**
* Unzip a file.
*
* @author [email protected]
* @author Stefan Bodewig
* @author Magesh Umasankar
* @since Ant 1.1 @ant.task category="packaging" name="unzip" name="unjar" name="unwar"
*
*/
public class Expand
{
private File dest;// req
private File source;// req
private boolean overwrite = true;
/**
* Do the work.
*
* @exception Exception Thrown in unrecoverable error.
*/
public void execute()
throws Exception
{
expandFile( source, dest );
}
protected void expandFile( final File srcF, final File dir )
throws Exception
{
// code from WarExpand
try ( ZipInputStream zis = new ZipInputStream( Files.newInputStream( srcF.toPath() ) ) )
{
for ( ZipEntry ze = zis.getNextEntry(); ze != null; ze = zis.getNextEntry() )
{
extractFile( srcF, dir, zis, ze.getName(), new Date( ze.getTime() ), ze.isDirectory() );
}
}
catch ( IOException ioe )
{
throw new Exception( "Error while expanding " + srcF.getPath(), ioe );
}
}
protected void extractFile( File srcF, File dir, InputStream compressedInputStream, String entryName,
Date entryDate, boolean isDirectory )
throws Exception
{
File f = FileUtils.resolveFile( dir, entryName );
if ( !f.getAbsolutePath().startsWith( dir.getAbsolutePath() ) )
{
throw new IOException( "Entry '" + entryName + "' outside the target directory." );
}
try
{
if ( !overwrite && f.exists() && f.lastModified() >= entryDate.getTime() )
{
return;
}
// create intermediary directories - sometimes zip don't add them
File dirF = f.getParentFile();
dirF.mkdirs();
if ( isDirectory )
{
f.mkdirs();
}
else
{
byte[] buffer = new byte[65536];
try ( OutputStream fos = Files.newOutputStream( f.toPath() ) )
{
for ( int length = compressedInputStream.read( buffer );
length >= 0;
fos.write( buffer, 0, length ), length = compressedInputStream.read( buffer ) )
;
}
}
f.setLastModified( entryDate.getTime() );
}
catch ( FileNotFoundException ex )
{
throw new Exception( "Can't extract file " + srcF.getPath(), ex );
}
}
/**
* Set the destination directory. File will be unzipped into the destination directory.
*
* @param d Path to the directory.
*/
public void setDest( File d )
{
this.dest = d;
}
/**
* Set the path to zip-file.
*
* @param s Path to zip-file.
*/
public void setSrc( File s )
{
this.source = s;
}
/**
* @param b Should we overwrite files in dest, even if they are newer than the corresponding entries in the archive?
*/
public void setOverwrite( boolean b )
{
overwrite = b;
}
}
