001/*
002 * (C) Copyright 2006-2007 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 *     Nuxeo - initial API and implementation
018 *
019 * $Id$
020 */
021
022package org.nuxeo.runtime.deployment.preprocessor.install.commands;
023
024import java.io.File;
025import java.io.FileNotFoundException;
026import java.io.IOException;
027import java.util.ArrayList;
028
029import org.nuxeo.common.utils.FileNamePattern;
030import org.nuxeo.common.utils.FileUtils;
031import org.nuxeo.common.utils.Path;
032import org.nuxeo.runtime.deployment.preprocessor.install.Command;
033import org.nuxeo.runtime.deployment.preprocessor.install.CommandContext;
034
035/**
036 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
037 */
038public class AppendCommand implements Command {
039
040    protected final Path src;
041
042    protected final Path dst;
043
044    protected final boolean addNewLine;
045
046    protected final FileNamePattern pattern;
047
048    public AppendCommand(Path src, Path dst, boolean addNewLine, FileNamePattern pattern) {
049        this.src = src;
050        this.dst = dst;
051        this.addNewLine = addNewLine;
052        this.pattern = pattern;
053    }
054
055    public AppendCommand(Path src, Path dst) {
056        this(src, dst, true, null);
057    }
058
059    @Override
060    public void exec(CommandContext ctx) throws IOException {
061        File baseDir = ctx.getBaseDir();
062        File srcFile = new File(baseDir, ctx.expandVars(src.toString()));
063        File dstFile = new File(baseDir, ctx.expandVars(dst.toString()));
064
065        if (pattern == null && !srcFile.exists()) {
066            throw new FileNotFoundException("Could not find the file " + srcFile.getAbsolutePath() + " to append.");
067        }
068
069        if (!dstFile.isFile()) {
070            try {
071                dstFile.createNewFile();
072            } catch (IOException e) {
073                throw new IOException("Could not create " + dstFile, e);
074            }
075        }
076        if (pattern == null) {
077            FileUtils.append(srcFile, dstFile, addNewLine);
078        } else {
079            ArrayList<File> files = new ArrayList<File>();
080            FileUtils.collectFiles(srcFile, pattern, files);
081            for (File file : files) {
082                FileUtils.append(file, dstFile);
083            }
084        }
085    }
086
087    @Override
088    public String toString() {
089        return "append " + src.toString() + " > " + dst.toString();
090    }
091
092    @Override
093    public String toString(CommandContext ctx) {
094        return "append " + ctx.expandVars(src.toString()) + " > " + ctx.expandVars(dst.toString());
095    }
096
097}