com.hazelcast.org.codehaus.janino.util.resource.PathResourceFinder 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.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.zip.ZipFile;
import com.hazelcast.org.codehaus.janino.util.iterator.TransformingIterator;
/**
* A {@link com.hazelcast.org.codehaus.janino.util.resource.ResourceFinder} that finds its resources along a "path" consisting of JAR
* file names, ZIP file names, and directory names.
*
* @see com.hazelcast.org.codehaus.janino.util.resource.ZipFileResourceFinder
* @see com.hazelcast.org.codehaus.janino.util.resource.DirectoryResourceFinder
*/
public
class PathResourceFinder extends LazyMultiResourceFinder {
/**
* @param entries The entries of the "path"
*/
public
PathResourceFinder(final File[] entries) {
super(PathResourceFinder.createIterator(Arrays.asList(entries).iterator()));
}
/**
* @param entries The entries of the "path"
*/
public
PathResourceFinder(Iterator entries) { super(entries); }
/**
* @param path A java-like path, i.e. a "path separator"-separated list of entries
*/
public
PathResourceFinder(String path) { this(PathResourceFinder.parsePath(path)); }
private static Iterator
createIterator(final Iterator entries) {
return new TransformingIterator(entries) {
@Override protected ResourceFinder
transform(Object o) { return PathResourceFinder.createResourceFinder((File) o); }
};
}
/**
* Breaks a given string up by the system-dependent path-separator character (on UNIX systems,
* this character is ':'; on Microsoft Windows systems it is ';'). Empty com.hazelcast.com.onents are
* ignored.
*
* UNIX Examples:
*
*
* - A:B:C
- A, B, C
*
- ::B:
- B
*
- :A
- A
*
- (Empty string)
- (Zero com.hazelcast.com.onents)
*
*
* @see File#pathSeparatorChar
*/
public static File[]
parsePath(String s) {
int from = 0;
List l = new ArrayList();
for (;;) {
int to = s.indexOf(File.pathSeparatorChar, from);
if (to == -1) {
if (from != s.length()) l.add(new File(s.substring(from)));
break;
}
if (to != from) l.add(new File(s.substring(from, to)));
from = to + 1;
}
return (File[]) l.toArray(new File[l.size()]);
}
/**
* A factory method that creates a Java classpath-style ResourceFinder as
* follows:
*
* {@code entry} Returned {@link ResourceFinder} "*.jar" file {@link ZipFileResourceFinder} "*.zip" file {@link ZipFileResourceFinder} directory {@link DirectoryResourceFinder} any other A {@link ResourceFinder} that never finds a resource
* @return a valid {@link ResourceFinder}
*/
private static ResourceFinder
createResourceFinder(final File entry) {
// ZIP file or JAR file.
if (
(entry.getName().endsWith(".jar") || entry.getName().endsWith(".zip"))
&& entry.isFile()
) {
try {
return new ZipFileResourceFinder(new ZipFile(entry));
} catch (IOException e) {
return ResourceFinder.EMPTY_RESOURCE_FINDER;
}
}
// Directory.
if (entry.isDirectory()) {
return new DirectoryResourceFinder(entry);
}
// Invalid entry.
return ResourceFinder.EMPTY_RESOURCE_FINDER;
}
}