| // |
| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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 com.cloud.utils.compression; |
| |
| import org.apache.log4j.Logger; |
| |
| import java.io.BufferedReader; |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.nio.charset.StandardCharsets; |
| import java.util.zip.GZIPInputStream; |
| import java.util.zip.GZIPOutputStream; |
| |
| public class CompressionUtil { |
| |
| private static final Logger s_logger = Logger.getLogger(CompressionUtil.class); |
| |
| public byte[] compressString(String inputStr) throws IOException { |
| ByteArrayOutputStream obj = new ByteArrayOutputStream(); |
| GZIPOutputStream gzip = new GZIPOutputStream(obj); |
| gzip.write(inputStr.getBytes(StandardCharsets.UTF_8)); |
| gzip.close(); |
| return obj.toByteArray(); |
| } |
| |
| public String decompressByteArary(byte[] compressed) throws IOException { |
| GZIPInputStream gis = new GZIPInputStream(new ByteArrayInputStream(compressed)); |
| BufferedReader bf = new BufferedReader(new InputStreamReader(gis, StandardCharsets.UTF_8)); |
| String line = bf.readLine(); |
| StringBuilder builder = new StringBuilder(); |
| while (line != null) { |
| builder.append(line); |
| line = bf.readLine(); |
| if (line != null) { |
| builder.append("\n"); |
| } |
| } |
| return builder.toString(); |
| } |
| } |