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;
027
028import org.apache.commons.lang.StringUtils;
029import org.nuxeo.common.utils.Path;
030import org.nuxeo.common.utils.PathFilter;
031import org.nuxeo.common.utils.ZipUtils;
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 UnzipCommand implements Command {
039
040    protected final Path src;
041
042    protected final Path dst;
043
044    protected final PathFilter filter;
045
046    protected final String prefix;
047
048    public UnzipCommand(Path src, Path dst) {
049        this(src, dst, null, null);
050    }
051
052    public UnzipCommand(Path src, Path dst, PathFilter filter) {
053        this(src, dst, filter, null);
054    }
055
056    public UnzipCommand(Path src, Path dst, String prefix) {
057        this(src, dst, null, prefix);
058    }
059
060    public UnzipCommand(Path src, Path dst, PathFilter filter, String prefix) {
061        this.src = src;
062        this.dst = dst;
063        this.filter = filter;
064        this.prefix = prefix;
065    }
066
067    @Override
068    public void exec(CommandContext ctx) throws IOException {
069        File baseDir = ctx.getBaseDir();
070        File srcFile = new File(baseDir, ctx.expandVars(src.toString()));
071        File dstFile = new File(baseDir, ctx.expandVars(dst.toString()));
072
073        if (!srcFile.exists()) {
074            throw new FileNotFoundException("Could not find the file " + srcFile.getAbsolutePath() + " to unzip.");
075        }
076
077        if (srcFile.isDirectory()) {
078            Path p = !StringUtils.isEmpty(prefix) ? new Path("/" + prefix) : new Path("/");
079            new CopyCommand(src.addTrailingSeparator(), dst.addTrailingSeparator(), p, filter).exec(ctx);
080            return;
081        }
082
083        if (dstFile.isFile()) {
084            throw new IllegalArgumentException("When unziping the destination file must be a directory: "
085                    + dstFile.getAbsolutePath());
086        }
087
088        if (!dstFile.exists()) {
089            dstFile.mkdirs();
090        }
091        // unzip srcFile to directory dstFile
092        if (filter != null) {
093            if (prefix != null) {
094                ZipUtils.unzip(prefix, srcFile, dstFile, filter);
095            } else {
096                ZipUtils.unzip(srcFile, dstFile, filter);
097            }
098        } else {
099            if (prefix != null) {
100                ZipUtils.unzip(prefix, srcFile, dstFile);
101            } else {
102                ZipUtils.unzip(srcFile, dstFile);
103            }
104        }
105    }
106
107    @Override
108    public String toString() {
109        return "unzip " + src.toString() + " > " + dst.toString();
110    }
111
112    @Override
113    public String toString(CommandContext ctx) {
114        return "unzip " + ctx.expandVars(src.toString()) + " > " + ctx.expandVars(dst.toString());
115    }
116
117}