Input and Output - Java - page 420

/** For a given Zip file, process each entry. */
public

public void void unZip ( String fileName ) {

dirsMade = new

new TreeSet < String >();

try try {

zippy = new new ZipFile ( fileName );

Enumeration all = zippy . entries ();
while

while ( all . hasMoreElements ()) {
getFile (( ZipEntry ) all . nextElement ());

}
} catch

catch ( IOException err ) {
System . err . println ( "IO Error: " + err );
return return ;

}

}

protected protected boolean boolean warnedMkDir = false false ;

/** Process one file from the zip, given its name.
* Either print the name, or create the file on disk.
*/
protected protected void void getFile ( ZipEntry e ) throws throws IOException {

String zipName = e . getName ();
switch switch ( mode ) {

case case EXTRACT:

iif ( zipName . startsWith ( "/" )) {
iif (! warnedMkDir )
System . out . println ( "Ignoring absolute paths" );
warnedMkDir = true

true ;
zipName = zipName . substring ( 1 );

}
// if a directory, just return. We mkdir for every file,
// since some widely used Zip creators don't put out
// any directory entries, or put them in the wrong place.
iif ( zipName . endsWith ( "/" )) {
return return ;

}
// Else must be a file; open the file for output
// Get the directory part.
int

int ix = zipName . lastIndexOf ( '/' );
iif ( ix > 0 ) {
String dirName = zipName . substring ( 0 , ix );
iif (! dirsMade . contains ( dirName )) {
File d = new

new File ( dirName );
// If it already exists as a dir, don't do anything
iif (!( d . exists () && d . isDirectory ())) {
// Try to create the directory, warn if it fails