com.hazelcast.org.codehaus.janino.util.resource.DirectoryResourceFinder Maven / Gradle / Ivy
/*
* Janino - An embedded Java[TM] com.hazelcast.com.iler
*
* Copyright (c) 2001-2010 Arno Unkrig. All rights reserved.
* Copyright (c) 2015-2016 TIBCO Software Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
* following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.hazelcast.org.codehaus.janino.util.resource;
import java.io.File;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import com.hazelcast.org.codehaus.com.hazelcast.com.ons.nullanalysis.Nullable;
/**
* A {@link com.hazelcast.org.codehaus.janino.util.resource.FileResourceFinder} that finds file resources in a directory. The name of
* the file is constructed by concatenating a dirctory name with the resource name such that slashes in the resource
* name map to file separators.
*/
public
class DirectoryResourceFinder extends FileResourceFinder {
private final File directory;
private final Map> subdirectoryNameToFiles = new HashMap>();
/**
* @param directory the directory to use as the search base
*/
public
DirectoryResourceFinder(File directory) { this.directory = directory; }
@Override public final String toString() { return "dir:" + this.directory; }
// Implement FileResourceFinder.
@Override @Nullable protected final File
findResourceAsFile(String resourceName) {
// Determine the subdirectory name (null for no subdirectory).
int idx = resourceName.lastIndexOf('/');
String subdirectoryName = (
idx == -1 ? null :
resourceName.substring(0, idx).replace('/', File.separatorChar)
);
// Determine files existing in this subdirectory.
Set files = (Set) this.subdirectoryNameToFiles.get(subdirectoryName);
if (files == null) {
File subDirectory = (
subdirectoryName == null
? this.directory
: new File(this.directory, subdirectoryName)
);
File[] fa = subDirectory.listFiles();
files = fa == null ? Collections.emptySet() : new HashSet(Arrays.asList(fa));
this.subdirectoryNameToFiles.put(subdirectoryName, files);
}
// Notice that "File.equals()" performs all the file-system dependent
// magic like case conversion.
File file = new File(this.directory, resourceName.replace('/', File.separatorChar));
if (!files.contains(file)) return null;
return file;
}
}