Java tutorial
package org.buildforce.tomcat.util; import org.apache.maven.model.FileSet; import org.apache.maven.model.Resource; import org.apache.maven.plugin.MojoExecutionException; import org.apache.maven.plugin.logging.Log; import org.apache.maven.shared.model.fileset.util.FileSetManager; import org.codehaus.plexus.util.DirectoryScanner; import java.io.File; import java.io.IOException; import java.util.Arrays; import java.util.List; /** * Copyright 2001-2005 The Apache Software Foundation. * * Licensed 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. */ /** * * NOTE: Beware of org.apache.maven.shared.model.fileset.FileSet * vs. org.apache.maven.model.FileSet * * @author Martin Todorov */ public class FileSystemUtils { /** * Default includes - everything is included. */ private static final String[] DEFAULT_INCLUDES = { "**/**" }; /** * Copies given resources to the build directory. * * @param resources * @param log * @throws MojoExecutionException */ public static void copyResources(Resource[] resources, Log log) throws MojoExecutionException { final String[] emptyStrArray = {}; for (Resource resource : resources) { FileSet fileSet = new FileSet(); fileSet.setDirectory(resource.getDirectory()); for (Object include : resource.getIncludes()) fileSet.addInclude((String) include); for (Object exclude : resource.getExcludes()) fileSet.addExclude((String) exclude); File resourceDirectory = new File(fileSet.getDirectory()); if (!resourceDirectory.isAbsolute()) resourceDirectory = new File(resourceDirectory.getPath()); if (!resourceDirectory.exists()) { log.info("Additional resource directory does not exist: " + resourceDirectory); continue; } DirectoryScanner scanner = new DirectoryScanner(); scanner.setBasedir(resourceDirectory); if (fileSet.getIncludes() != null && !fileSet.getIncludes().isEmpty()) //noinspection unchecked scanner.setIncludes((String[]) fileSet.getIncludes().toArray(emptyStrArray)); else scanner.setIncludes(DEFAULT_INCLUDES); if (fileSet.getExcludes() != null && !fileSet.getExcludes().isEmpty()) //noinspection unchecked scanner.setExcludes((String[]) fileSet.getExcludes().toArray(emptyStrArray)); scanner.addDefaultExcludes(); scanner.scan(); List includedFiles = Arrays.asList(scanner.getIncludedFiles()); log.info("Copying " + includedFiles.size() + " web resource" + (includedFiles.size() > 1 ? "s" : "")); for (Object includedFile : includedFiles) { String destination = (String) includedFile; File source = new File(resourceDirectory, destination); File destinationFile = new File(resource.getTargetPath(), destination); if (!destinationFile.getParentFile().exists()) destinationFile.getParentFile().mkdirs(); try { org.codehaus.plexus.util.FileUtils.copyFile(source, destinationFile); } catch (IOException e) { throw new MojoExecutionException("Error copying web resource " + source, e); } } } } /** * Deletes a directory and its contents. * * @param dir The base directory of the included and excluded files. * @throws MojoExecutionException When a directory failed to get deleted. */ public static void removeDirectory(File dir, Log log) throws MojoExecutionException { if (dir != null) { org.apache.maven.shared.model.fileset.FileSet fs = new org.apache.maven.shared.model.fileset.FileSet(); fs.setDirectory(dir.getPath()); fs.addInclude("**"); removeFileSet(fs, log); } } /** * Deletes the specified file set. If the base directory of the file set is relative, it will be resolved against * the base directory of the current project. * * @param fileset The file set to delete, must not be <code>null</code>. * @throws MojoExecutionException When the file set failed to get deleted. */ public static void removeFileSet(org.apache.maven.shared.model.fileset.FileSet fileset, Log log) throws MojoExecutionException { try { File dir = new File(fileset.getDirectory()).getAbsoluteFile(); if (!dir.exists()) { log.debug("Skipping non-existing directory: " + dir); return; } if (!dir.isDirectory()) { throw new MojoExecutionException(dir + " is not a directory."); } log.info("Deleting " + fileset.getDirectory()); FileSetManager fileSetManager = new FileSetManager(log, true); fileSetManager.delete(fileset); } catch (IOException e) { throw new MojoExecutionException( "Failed to delete directory: " + fileset.getDirectory() + ". Reason: " + e.getMessage(), e); } catch (IllegalStateException e) { // TODO: IOException from plexus-utils should be acceptable here throw new MojoExecutionException( "Failed to delete directory: " + fileset.getDirectory() + ". Reason: " + e.getMessage(), e); } } public static org.apache.maven.shared.model.fileset.FileSet createFileSet(File directory, String[] includes, String[] excludes) { return createFileSet(directory.getPath(), includes, excludes); } public static org.apache.maven.shared.model.fileset.FileSet createFileSet(String directory, String includes, String excludes) { String[] inc = includes != null ? includes.split(",") : null; String[] exc = excludes != null ? excludes.split(",") : null; return createFileSet(directory, inc, exc); } public static org.apache.maven.shared.model.fileset.FileSet createFileSet(String directory, String[] includes, String[] excludes) { org.apache.maven.shared.model.fileset.FileSet fileSet = new org.apache.maven.shared.model.fileset.FileSet(); fileSet.setDirectory(directory); if (includes != null) { for (String include : includes) { fileSet.addInclude(include); } } if (excludes != null) { for (String exclude : excludes) { fileSet.addExclude(exclude); } } return fileSet; } }