001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.vfs2.tasks;
018
019import java.util.StringTokenizer;
020
021import org.apache.commons.vfs2.FileObject;
022import org.apache.commons.vfs2.util.Messages;
023import org.apache.tools.ant.BuildException;
024
025/**
026 * An Ant task that deletes matching files.
027 * <p>
028 * TOOD - Allow selector to be specified.
029 */
030public class DeleteTask extends VfsTask {
031    private String file;
032    private String srcDirUrl;
033    private String filesList;
034
035    /**
036     * Sets the file/folder to delete.
037     *
038     * @param file The name of the file.
039     */
040    public void setFile(final String file) {
041        this.file = file;
042    }
043
044    /**
045     * Sets the source directory.
046     *
047     * @param srcDir The source directory.
048     */
049    public void setSrcDir(final String srcDir) {
050        this.srcDirUrl = srcDir;
051    }
052
053    /**
054     * Sets the files to include.
055     *
056     * @param filesList The list of files.
057     */
058    public void setIncludes(final String filesList) {
059        this.filesList = filesList;
060    }
061
062    /**
063     * Executes this task.
064     *
065     * @throws BuildException if an error occurs.
066     */
067    @Override
068    public void execute() throws BuildException {
069        if ((file == null && srcDirUrl == null) || (srcDirUrl != null && filesList == null)) {
070            final String message = Messages.getString("vfs.tasks/delete.no-source-files.error");
071            throw new BuildException(message);
072        }
073
074        try {
075            if (srcDirUrl != null && filesList != null) {
076                log("Deleting " + filesList + " in the directory " + srcDirUrl);
077                if (!srcDirUrl.endsWith("/")) {
078                    srcDirUrl += "/";
079                }
080                final StringTokenizer tok = new StringTokenizer(filesList, ", \t\n\r\f", false);
081                while (tok.hasMoreTokens()) {
082                    final String nextFile = tok.nextToken();
083                    final FileObject srcFile = resolveFile(srcDirUrl + nextFile);
084                    srcFile.deleteAll();
085                }
086            } else {
087                final FileObject srcFile = resolveFile(file);
088                log("Deleting " + srcFile.getPublicURIString());
089                srcFile.deleteAll();
090            }
091        } catch (final Exception e) {
092            throw new BuildException(e);
093        }
094    }
095}