package jaskell.util;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.util.zip.DataFormatException;

import java.util.zip.Deflater;

import java.util.zip.Inflater;

public class ZipHelper {

static public byte[] decompressByteArray(byte[] bytes, int buffer_size) throws DataFormatException, IOException {

ByteArrayOutputStream baos = null;

Inflater iflr = new Inflater();

iflr.setInput(bytes);

baos = new ByteArrayOutputStream();

byte[] tmp = new byte[buffer_size];

try{

while(!iflr.finished()){

int size = iflr.inflate(tmp);

baos.write(tmp, 0, size);

}

} finally {

baos.close();

}

return baos.toByteArray();

}

static public byte[] decompressByteArray(byte[] bytes) throws DataFormatException, IOException {

return decompressByteArray(bytes, 64);

}

static public byte[] compressByteArray(byte[] bytes, int buffer_size) throws DataFormatException, IOException {

ByteArrayOutputStream baos = null;

Deflater dflr = new Deflater();

dflr.setInput(bytes);

dflr.finish();

baos = new ByteArrayOutputStream();

byte[] tmp = new byte[buffer_size];

try{

while(!dflr.finished()){

int size = dflr.deflate(tmp);

baos.write(tmp, 0, size);

}

} finally {

dflr.end();

baos.close();

}

return baos.toByteArray();

}

static public byte[] compressByteArray(byte[] bytes) throws DataFormatException, IOException {

return compressByteArray(bytes, 64);

}

}