Galileo Computing :: Java ist auch eine Insel (8. Auflage) – 14.10 Datenkompression - Annotated
- package com.tutego.insel.io.zip;
import java.util.zip.*;
import java.io.*;
import java.util.*;
public class unzip
{
private static final byte[] buffer = new byte[ 0xFFFF ];
public static void main( String[] args )
{
if ( args.length != 2 )
System.out.println( "Benutzung: unzip"
else
{
try
{
ZipFile zipFile = new ZipFile( args[0] );
Enumeration extends ZipEntry> zipEntryEnum = zipFile.entries();
while ( zipEntryEnum.hasMoreElements() )
{
ZipEntry zipEntry = zipEntryEnum.nextElement();
System.out.print( zipEntry.getName() + "." );
extractEntry( zipFile, zipEntry, args[1] );
System.out.println( ".. unpacked" );
}
}
catch ( FileNotFoundException e )
{
System.err.println( "Fehler: ZipFile nicht gefunden!" );
}
catch ( IOException e )
{
System.err.println( "Fehler: Allgemeiner Ein-/Ausgabefehler!" );
}
}
}
private static void extractEntry( ZipFile zf, ZipEntry entry, String destDir )
throws IOException
{
File file = new File( destDir, entry.getName() );
if ( entry.isDirectory() )
file.mkdirs();
else
{
new File( file.getParent() ).mkdirs();
InputStream is = null;
OutputStream os = null;
try
{
is = zf.getInputStream( entry );
os = new FileOutputStream( file );
for ( int len; (len = is.read(buffer)) != –1; )
os.write( buffer, 0, len );
}
finally
{
if ( os != null ) os.close();
if ( is != null ) is.close();
}
}
}
}
- package com.tutego.insel.io.zip;
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