de.ocarthon.core.utility.GzipCompression.java Source code

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Here is the source code for de.ocarthon.core.utility.GzipCompression.java

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/*
 *    Copyright 2015 Ocarthon (Philip Standt)
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package de.ocarthon.core.utility;

import com.google.gson.Gson;
import org.apache.commons.io.IOUtils;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

public class GzipCompression {
    private static final Gson gson = new Gson();

    public static String decompress(InputStream inputStream) throws IOException {
        GZIPInputStream gis = null;
        String json;

        try {
            gis = new GZIPInputStream(inputStream);
            json = IOUtils.toString(gis, "UTF-8");
        } finally {
            IOUtils.closeQuietly(gis);
        }

        return json;
    }

    public static void compress(String input, OutputStream os) throws IOException {
        GZIPOutputStream gos = null;
        PrintWriter pw = null;

        try {
            gos = new GZIPOutputStream(os);
            pw = new PrintWriter(gos);
            pw.write(input);
        } finally {
            IOUtils.closeQuietly(pw);
            IOUtils.closeQuietly(gos);
        }
    }
}