nl.clockwork.common.util.Utils.java Source code

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Here is the source code for nl.clockwork.common.util.Utils.java

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/*******************************************************************************
 * Copyright 2011 Clockwork
 * 
 * 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 nl.clockwork.common.util;

import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.FileNameMap;
import java.net.URLConnection;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

import org.apache.commons.codec.binary.Base64;

public class Utils {
    public static byte[] zip(String content) throws IOException {
        return zip("name", content);
    }

    public static byte[] zip(String name, String content) throws IOException {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ZipOutputStream zout = new ZipOutputStream(out);
        ZipEntry entry = new ZipEntry(name);
        zout.putNextEntry(entry);
        zout.write(content.getBytes());
        zout.close();
        return out.toByteArray();
    }

    public static byte[] unzip(byte[] content) throws IOException {
        int BUFFER_SIZE = 2048;
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ZipInputStream zin = new ZipInputStream(new ByteArrayInputStream(content));
        ZipEntry entry = zin.getNextEntry();
        if (entry != null) {
            int count;
            byte buffer[] = new byte[BUFFER_SIZE];
            BufferedOutputStream bout = new BufferedOutputStream(out, BUFFER_SIZE);
            while ((count = zin.read(buffer, 0, BUFFER_SIZE)) != -1)
                bout.write(buffer, 0, count);
            bout.flush();
            bout.close();
            zin.close();
        }
        return out.toByteArray();
    }

    public static byte[] base64Decode(byte[] content) {
        Base64 base64 = new Base64();
        return base64.decode(content);
    }

    public static String getMimeType(String fileName) throws java.io.IOException {
        FileNameMap fileNameMap = URLConnection.getFileNameMap();
        return fileNameMap.getContentTypeFor(fileName);
    }

}