diff options
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/JavaResource.java')
-rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/JavaResource.java | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/JavaResource.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/JavaResource.java new file mode 100644 index 00000000..a927d3fb --- /dev/null +++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/JavaResource.java @@ -0,0 +1,141 @@ +/* + * 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. + * + */ +package org.apache.tools.ant.types.resources; + +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.InputStream; +import java.net.URL; + +import org.apache.tools.ant.types.Path; +import org.apache.tools.ant.types.Resource; + +/** + * A Resource representation of something loadable via a Java classloader. + * @since Ant 1.7 + */ +public class JavaResource extends AbstractClasspathResource + implements URLProvider { + + /** + * Default constructor. + */ + public JavaResource() { + } + + /** + * Construct a new JavaResource using the specified name and + * classpath. + * + * @param name the resource name. + * @param path the classpath. + */ + public JavaResource(String name, Path path) { + setName(name); + setClasspath(path); + } + + /** + * open the input stream from a specific classloader + * @param cl the classloader to use. Will be null if the system + * classloader is used + * @return an open input stream for the resource + * @throws IOException if an error occurs. + */ + protected InputStream openInputStream(ClassLoader cl) throws IOException { + InputStream inputStream; + if (cl == null) { + inputStream = ClassLoader.getSystemResourceAsStream(getName()); + if (inputStream == null) { + throw new FileNotFoundException("No resource " + getName() + + " on Ant's classpath"); + } + } else { + inputStream = cl.getResourceAsStream(getName()); + if (inputStream == null) { + throw new FileNotFoundException("No resource " + getName() + + " on the classpath " + cl); + } + } + return inputStream; + } + + /** + * Get the URL represented by this Resource. + * @since Ant 1.8.0 + */ + public URL getURL() { + if (isReference()) { + return ((JavaResource) getCheckedRef()).getURL(); + } + AbstractClasspathResource.ClassLoaderWithFlag classLoader = + getClassLoader(); + if (classLoader.getLoader() == null) { + return ClassLoader.getSystemResource(getName()); + } else { + try { + return classLoader.getLoader().getResource(getName()); + } finally { + classLoader.cleanup(); + } + } + } + + /** + * Compare this JavaResource to another Resource. + * @param another the other Resource against which to compare. + * @return a negative integer, zero, or a positive integer as this + * JavaResource is less than, equal to, or greater than the + * specified Resource. + */ + public int compareTo(Resource another) { + if (isReference()) { + return ((Resource) getCheckedRef()).compareTo(another); + } + if (another.getClass().equals(getClass())) { + JavaResource otherjr = (JavaResource) another; + if (!getName().equals(otherjr.getName())) { + return getName().compareTo(otherjr.getName()); + } + if (getLoader() != otherjr.getLoader()) { + if (getLoader() == null) { + return -1; + } + if (otherjr.getLoader() == null) { + return 1; + } + return getLoader().getRefId() + .compareTo(otherjr.getLoader().getRefId()); + } + Path p = getClasspath(); + Path op = otherjr.getClasspath(); + if (p != op) { + if (p == null) { + return -1; + } + if (op == null) { + return 1; + } + return p.toString().compareTo(op.toString()); + } + return 0; + } + return super.compareTo(another); + } + +} |