/*
* 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 WARRANTIESOR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.aries.application.utils.filesystem;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import org.apache.aries.application.filesystem.IDirectory;
import org.apache.aries.application.utils.filesystem.impl.DirectoryImpl;
import org.apache.aries.application.utils.filesystem.impl.ZipDirectory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* An abstraction of a file system. A file system can be a zip, or a directory.
*/
public class FileSystem {
private static final Logger _logger = LoggerFactory.getLogger("org.apache.aries.application.utils");
/**
* This method gets the IDirectory that represents the root of a virtual file
* system. The provided file can either identify a directory, or a zip file.
*
* @param fs the zip file.
* @return the root of the virtual FS.
*/
public static IDirectory getFSRoot(File fs)
{
IDirectory dir = null;
if (fs.exists()) {
if (fs.isDirectory()) {
dir = new DirectoryImpl(fs, fs);
} else if (fs.isFile()) {
try {
dir = new ZipDirectory(fs, fs);
} catch (IOException e) {
_logger.error ("IOException in IDirectory.getFSRoot", e);
}
}
}
else {
// since this method does not throw an exception but just returns null, make sure we do not lose the error
_logger.error("File not found in IDirectory.getFSRoot", new FileNotFoundException(fs.getPath()));
}
return dir;
}
}