Here is a ZipFileIterator (like a java Iterator, but for zip files):
package ch.epfl.bbp.io;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Iterator;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
public class ZipFileIterator implements Iterator<File> {
private byte[] buffer = new byte[1024];
private FileInputStream is;
private ZipInputStream zis;
private ZipEntry ze;
public ZipFileIterator(File file) throws FileNotFoundException {
is = new FileInputStream(file);
zis = new ZipInputStream(new BufferedInputStream(is));
}
@Override
public boolean hasNext() {
try {
return (ze = zis.getNextEntry()) != null;
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
@Override
public File next() {
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int count;
String filename = ze.getName();
File tmpFile = File.createTempFile(filename, "tmp");
tmpFile.deleteOnExit();// TODO make it configurable
FileOutputStream fout = new FileOutputStream(tmpFile);
while ((count = zis.read(buffer)) != -1) {
baos.write(buffer, 0, count);
byte[] bytes = baos.toByteArray();
fout.write(bytes);
baos.reset();
}
fout.close();
zis.closeEntry();
return tmpFile;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
public void remove() {
throw new RuntimeException("not implemented");
}
public void close() {
try {
zis.close();
is.close();
} catch (IOException e) {// nope
}
}
}