patch to support classpath resources

classpath_resources.patch (text/plain), 9.62 KB, created by Max Berger on 2007-07-26 08:45:53 UTC

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Description: patch to support classpath resources

Filename:

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Creator: Max Berger

Created: 2007-07-26 08:45:53 UTC

Size: 9.62 KB

patch

obsolete

>Index: test/java/org/apache/xmlgraphics/StandardTestSuite.java >=================================================================== >--- test/java/org/apache/xmlgraphics/StandardTestSuite.java (revision 559827) >+++ test/java/org/apache/xmlgraphics/StandardTestSuite.java (working copy) >@@ -23,6 +23,7 @@ > import org.apache.xmlgraphics.ps.PSEscapeTestCase; > import org.apache.xmlgraphics.ps.dsc.events.DSCValueParserTestCase; > import org.apache.xmlgraphics.ps.dsc.tools.DSCToolsTestCase; >+import org.apache.xmlgraphics.util.ClasspathResourceTest; > import org.apache.xmlgraphics.util.ServiceTest; > import org.apache.xmlgraphics.util.io.ASCII85InputStreamTestCase; > import org.apache.xmlgraphics.util.io.ASCII85OutputStreamTestCase; >@@ -49,6 +50,7 @@ > suite.addTest(new TestSuite(ASCII85OutputStreamTestCase.class)); > suite.addTest(new TestSuite(PNGEncoderTest.class)); > suite.addTest(new TestSuite(ServiceTest.class)); >+ suite.addTest(new TestSuite(ClasspathResourceTest.class)); > suite.addTest(new TestSuite(PSEscapeTestCase.class)); > suite.addTest(new TestSuite(DSCValueParserTestCase.class)); > suite.addTest(new TestSuite(DSCToolsTestCase.class)); >Index: test/java/org/apache/xmlgraphics/util/ClasspathResourceTest.java >=================================================================== >--- test/java/org/apache/xmlgraphics/util/ClasspathResourceTest.java (revision 0) >+++ test/java/org/apache/xmlgraphics/util/ClasspathResourceTest.java (revision 0) >@@ -0,0 +1,65 @@ >+/* >+ * 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. >+ */ >+ >+/* $Id: $ */ >+ >+package org.apache.xmlgraphics.util; >+ >+import java.net.URL; >+import java.util.Iterator; >+import java.util.List; >+ >+import junit.framework.TestCase; >+ >+/** >+ * Test for the Service class. >+ */ >+public class ClasspathResourceTest extends TestCase { >+ >+ /** >+ * Tests whether the file /sample.txt with mime-type text/plain exists. >+ * >+ * @throws Exception >+ * in case of an error >+ */ >+ public void testSampleResource() throws Exception { >+ final List list = ClasspathResource.getClassPathResource() >+ .listResourcesOfMimeType("text/plain"); >+ boolean found = false; >+ final Iterator i = list.iterator(); >+ while (i.hasNext()) { >+ final URL u = (URL) i.next(); >+ if (u.getPath().endsWith("sample.txt")) { >+ found = true; >+ } >+ } >+ assertTrue(found); >+ } >+ >+ /** >+ * Tests the mode where Service returns class names. >+ * >+ * @throws Exception >+ * in case of an error >+ */ >+ public void testNonexistingResource() throws Exception { >+ final List list = ClasspathResource.getClassPathResource() >+ .listResourcesOfMimeType("nota/mime-type"); >+ assertTrue(list.isEmpty()); >+ } >+ >+} >Index: test/resources/sample.txt >=================================================================== >--- test/resources/sample.txt (revision 0) >+++ test/resources/sample.txt (revision 0) >@@ -0,0 +1 @@ >+A sample text >Index: test/resources/META-INF/MANIFEST.MF >=================================================================== >--- test/resources/META-INF/MANIFEST.MF (revision 0) >+++ test/resources/META-INF/MANIFEST.MF (revision 0) >@@ -0,0 +1,4 @@ >+Manifest-Version: 1.0 >+ >+Name: sample.txt >+Content-Type: text/plain >Index: src/java/org/apache/xmlgraphics/util/ClasspathResource.java >=================================================================== >--- src/java/org/apache/xmlgraphics/util/ClasspathResource.java (revision 0) >+++ src/java/org/apache/xmlgraphics/util/ClasspathResource.java (revision 0) >@@ -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. >+ */ >+ >+/* $Id: Service.java 496556 2007-01-16 00:59:48Z cam $ */ >+ >+package org.apache.xmlgraphics.util; >+ >+import java.io.IOException; >+import java.net.URL; >+import java.util.ArrayList; >+import java.util.Enumeration; >+import java.util.HashMap; >+import java.util.Iterator; >+import java.util.List; >+import java.util.Map; >+import java.util.Vector; >+import java.util.jar.Attributes; >+import java.util.jar.Manifest; >+ >+/** >+ * A class to find resources in the classpath by their mime-type specified in >+ * the MANIFEST. >+ * <p> >+ * This class searches for content entries in all META-INF/MANIFEST.MF files. It >+ * will find files with a given Content-Type: attribute. This allows to add >+ * arbitrary resources by content-type just by creating a JAR wrapper and adding >+ * them to the classpath. >+ * <p> >+ * Example:<br> >+ * >+ * <pre> >+ * Name: test.txt >+ * Content-Type: text/plain >+ * </pre> >+ */ >+public final class ClasspathResource { >+ >+ /** >+ * Actual Type: Map&lt;String,List&lt;URL&gt;&gt;. >+ */ >+ private final Map contentMappings; >+ >+ private static final String MANIFEST_PATH = "META-INF/MANIFEST.MF"; >+ >+ private static final String CONTENT_TYPE_KEY = "Content-Type"; >+ >+ private static ClasspathResource classpathResource; >+ >+ private ClasspathResource() { >+ contentMappings = new HashMap(); >+ loadManifests(); >+ } >+ >+ /** >+ * Retrieve the singleton instance of this class. >+ * >+ * @return the ClassPathResource instance. >+ */ >+ public static synchronized ClasspathResource getClassPathResource() { >+ if (classpathResource == null) { >+ classpathResource = new ClasspathResource(); >+ } >+ return classpathResource; >+ } >+ >+ private void loadManifests() { >+ Enumeration e; >+ try { >+ e = ClassLoader.getSystemClassLoader().getResources(MANIFEST_PATH); >+ >+ while (e.hasMoreElements()) { >+ final URL u = (URL) e.nextElement(); >+ try { >+ final Manifest manifest = new Manifest(u.openStream()); >+ final Map entries = manifest.getEntries(); >+ final Iterator entrysetiterator = entries.entrySet() >+ .iterator(); >+ while (entrysetiterator.hasNext()) { >+ final Map.Entry entry = (Map.Entry) entrysetiterator >+ .next(); >+ final String name = (String) entry.getKey(); >+ final Attributes attributes = (Attributes) entry >+ .getValue(); >+ final String contentType = attributes >+ .getValue(CONTENT_TYPE_KEY); >+ if (contentType != null) { >+ addToMapping(contentType, name); >+ } >+ } >+ } catch (IOException io) { >+ // TODO: Log. >+ } >+ } >+ } catch (IOException io) { >+ // TODO: Log. >+ } >+ } >+ >+ private void addToMapping(final String contentType, final String name) { >+ List existingFiles = (List) contentMappings.get(contentType); >+ if (existingFiles == null) { >+ existingFiles = new Vector(); >+ contentMappings.put(contentType, existingFiles); >+ } >+ final URL url = ClassLoader.getSystemClassLoader().getResource(name); >+ if (url != null) { >+ existingFiles.add(url); >+ } >+ } >+ >+ /** >+ * Retrieve a list of resources known to have the given mime-type. >+ * >+ * @param mimeType >+ * the mime-type to search for. >+ * @return a List&lt;URL&gt;, guaranteed to be != null. >+ */ >+ public List listResourcesOfMimeType(final String mimeType) { >+ final List content = (List) contentMappings.get(mimeType); >+ if (content == null) { >+ return new ArrayList(0); >+ } else { >+ return content; >+ } >+ } >+ >+} >Index: build.xml >=================================================================== >--- build.xml (revision 559827) >+++ build.xml (working copy) >@@ -321,6 +321,9 @@ > </fileset> > </classpath> > </javac> >+ <copy todir="${build.dir}/test-classes"> >+ <fileset dir="${basedir}/test/resources"/> >+ </copy> > </target> > > <target name="junit-basic" depends="junit-compile" description="Runs the standard JUnit test suite" if="junit.present"> View Attachment As Raw

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