| /* |
| * 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 org.apache.clerezza.tools.offline; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.zip.ZipEntry; |
| import java.util.zip.ZipOutputStream; |
| import org.wymiwyg.commons.util.dirbrowser.PathNode; |
| |
| /** |
| * |
| * @author reto |
| */ |
| class ZipCreationUtil { |
| static byte[] createZip(PathNode rootNode) throws IOException { |
| ByteArrayOutputStream result = new ByteArrayOutputStream(); |
| ZipOutputStream compressedTcs = new ZipOutputStream(result); |
| archive(compressedTcs, rootNode); |
| compressedTcs.close(); |
| return result.toByteArray(); |
| } |
| |
| private static void archive(ZipOutputStream compressedTcs, |
| PathNode pathNode) throws IOException { |
| if (pathNode.isDirectory()) { |
| //multi-path node doesn't prevent duplicate in versions previous to |
| //0.8 |
| Set<String> childNames = new HashSet<String>(Arrays.asList(pathNode.list())); |
| for (String childName : childNames) { |
| archive(compressedTcs, pathNode.getSubPath(childName)); |
| } |
| } else { |
| compressedTcs.putNextEntry(new ZipEntry(removeLeadingSlash(pathNode.getPath()))); |
| final int BUF_SIZE = 2048; |
| byte buffer[] = new byte[BUF_SIZE]; |
| InputStream in = pathNode.getInputStream(); |
| int count; |
| while ((count = in.read(buffer, 0, BUF_SIZE)) != -1) { |
| compressedTcs.write(buffer, 0, count); |
| } |
| } |
| } |
| |
| private static String removeLeadingSlash(String string) { |
| if (string.length() > 0 && string.charAt(0) == '/') { |
| return string.substring(1); |
| } else { |
| return string; |
| } |
| } |
| } |