001/*
002 * (C) Copyright 2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Stephane Lacoin
018 */
019package org.nuxeo.runtime.tomcat.dev;
020
021import java.io.File;
022import java.io.FileInputStream;
023import java.io.FileOutputStream;
024import java.io.IOException;
025import java.io.InputStream;
026import java.io.OutputStream;
027import java.util.List;
028
029public class IOUtils {
030
031    public static void deleteTree(File dir) {
032        for (File file : dir.listFiles()) {
033            if (file.isDirectory()) {
034                deleteTree(file);
035            } else {
036                file.delete();
037            }
038        }
039        dir.delete();
040    }
041
042    public static void copyTree(File source, File target) throws IOException {
043        if (source.isDirectory()) {
044            if (!target.exists()) {
045                target.mkdir();
046            }
047            for (File child : source.listFiles()) {
048                copyTree(child, new File(target, child.getName()));
049            }
050        } else {
051            try (FileInputStream in = new FileInputStream(source); //
052                    FileOutputStream out = new FileOutputStream(target)) {
053                copyContent(in, out);
054            }
055        }
056    }
057
058    public static void copyContent(InputStream is, OutputStream out) throws IOException {
059        int data;
060        while (is.available() > 0 && (data = is.read()) != -1) {
061            out.write(data);
062        }
063    }
064
065    public static void appendResourceBundleFragments(String name, List<File> files, File target) throws IOException {
066        File l10n = new File(target, name);
067        File backup = new File(target, name + "~bak");
068        if (!backup.exists()) {
069            backup.createNewFile();
070            try (FileInputStream in = new FileInputStream(l10n); //
071                    FileOutputStream out = new FileOutputStream(backup)) {
072                copyContent(in, out);
073            }
074        }
075        try (FileInputStream in = new FileInputStream(backup); //
076                FileOutputStream out = new FileOutputStream(l10n)) {
077            copyContent(in, out);
078        }
079        for (File file : files) {
080            try (InputStream in = new FileInputStream(file); //
081                    OutputStream out = new FileOutputStream(l10n, true)) { // append
082                copyContent(in, out);
083            }
084        }
085    }
086
087}