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/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
/* @version $Rev$ $Date$ */
package org.apache.tuscany.sca.cpp.tools.services;
import java.io.File;
import java.util.Set;
import org.apache.tuscany.sca.cpp.tools.common.FileActor;
import org.apache.tuscany.sca.cpp.tools.common.Utils;
public class DirectoryScanner {
private FileActor actor;
private Set actOnTheseFileExtensions;
public DirectoryScanner(FileActor actor, Set extensions) {
this.actor = actor;
this.actOnTheseFileExtensions = extensions;
}
/**
*
* @param source
* The composite root directory
* @param target
* The directory that will hold the generated output
* @param depth
* The depth from the initial starting point, not significant for
* the Scagen tool as we are only interested in the composite root
* directory but present due to the FileActor actOnFile interface
* method. This code is pulled from the code in the CParsingTool
* class and further work is needed to remove the duplication.
* Tnterface has been left unchanged as we hope to reconverge the
* parser here with the original one once the changes are fed
* back into the original code.
* @throws Exception
*/
public void walkTree(File source, File target, int depth) throws Exception {
depth++;
boolean noTarget = (null == target);
if (!source.canRead())
Utils.rude("Cannot read from source directory " + source);
if (!noTarget && !target.canWrite())
Utils.rude("Cannot write to target directory " + target);
if (source.isDirectory()) {
File[] filesInDirectory = source.listFiles();
for (int i = 0; i < filesInDirectory.length; i++) {
File file = filesInDirectory[i];
String name = file.getName();
int dot = name.lastIndexOf('.');
String ext = null;
if (-1 != dot) {
ext = name.substring(dot + 1);
}
if (file.isFile()
&& (actOnTheseFileExtensions == null || (!file
.isHidden() && actOnTheseFileExtensions
.contains(ext)))) {
// this is a file we need to act on!
actor.actOnFile(file, target, depth);
}
}
} else {
return; // Do not act on single files for now we expect a composite
// root directory
// and the "main" class checks its parameters to ensure this is so.
}
}
}
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