79 lines
3.5 KiB
Java
79 lines
3.5 KiB
Java
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/*
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* Janino - An embedded Java[TM] compiler
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*
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* Copyright (c) 2001-2010, Arno Unkrig
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
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* following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
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* following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.codehaus.janino.util.resource;
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import java.io.File;
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import java.io.FilenameFilter;
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import java.io.IOException;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.zip.ZipFile;
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import org.codehaus.janino.util.iterator.MultiDimensionalIterator;
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import org.codehaus.janino.util.iterator.TransformingIterator;
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/** Finds resources in any of the "*.jar" files that exist in a given set of directories. */
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public
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class JarDirectoriesResourceFinder extends LazyMultiResourceFinder {
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/** @param directories The set of directories to search for JAR files. */
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@SuppressWarnings({ "unchecked", "rawtypes" }) public
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JarDirectoriesResourceFinder(final File[] directories) {
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super(new MultiDimensionalIterator(
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// Iterate over directories.
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new TransformingIterator(Arrays.asList(directories).iterator()) {
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@Override protected Object/*Iterator<ResourceFinder>*/
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transform(Object/*File*/ o) {
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File directory = (File) o;
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if (!directory.exists()) return Collections.EMPTY_LIST.iterator();
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// Iterate over the JAR files in the given directory.
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File[] jarFiles = directory.listFiles(new FilenameFilter() {
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@Override public boolean accept(File dir, String name) { return name.endsWith(".jar"); }
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});
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return new TransformingIterator(Arrays.asList(jarFiles).iterator()) {
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@Override protected Object/*ResourceFinder*/
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transform(Object/*File*/ o) {
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File jarFile = (File) o;
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try {
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return new ZipFileResourceFinder(new ZipFile(jarFile));
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} catch (IOException e) {
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return ResourceFinder.EMPTY_RESOURCE_FINDER;
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}
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}
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};
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}
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},
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2
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));
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}
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}
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