ca.uhn.fhir.jpa.dao.GZipUtil.java Source code

Introduction

Here is the source code for ca.uhn.fhir.jpa.dao.GZipUtil.java

Source

package ca.uhn.fhir.jpa.dao;

/*
 * #%L
 * HAPI FHIR JPA Server
 * %%
 * Copyright (C) 2014 - 2016 University Health Network
 * %%
 * 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.
 * #L%
 */

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

import org.apache.commons.io.IOUtils;

import ca.uhn.fhir.parser.DataFormatException;

public class GZipUtil {

    public static String decompress(byte[] theResource) {
        GZIPInputStream is;
        try {
            is = new GZIPInputStream(new ByteArrayInputStream(theResource));
            return IOUtils.toString(is, "UTF-8");
        } catch (IOException e) {
            throw new DataFormatException("Failed to decompress contents", e);
        }
    }

    public static byte[] compress(String theEncoded) {
        try {
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            GZIPOutputStream gos = new GZIPOutputStream(os);
            IOUtils.write(theEncoded, gos, "UTF-8");
            gos.close();
            os.close();
            byte[] retVal = os.toByteArray();
            return retVal;
        } catch (IOException e) {
            throw new DataFormatException("Compress contents", e);
        }
    }

}