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@@ -1,146 +1,146 @@ |
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package org.apache.tools.ant.util;
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import org.apache.tools.ant.AntClassLoader;
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import org.apache.tools.ant.BuildException;
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import java.io.File;
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import java.util.Map;
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import java.util.HashMap;
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/**
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* A class to modify a classloader to
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* support BSF language support.
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*/
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public class ScriptFixBSFPath {
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private static final String UTIL_OPTIONAL_PACKAGE
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= "org.apache.tools.ant.util.optional";
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private static final String BSF_PACKAGE = "org.apache.bsf";
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private static final String BSF_MANAGER = BSF_PACKAGE + ".BSFManager";
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private static final String BSF_SCRIPT_RUNNER
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= UTIL_OPTIONAL_PACKAGE + ".ScriptRunner";
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/**
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* The following are languages that have
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* scripting engines embedded in bsf.jar.
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* The array is converted to a map of
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* languagename->classname.
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*/
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private static final String[] BSF_LANGUAGES =
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new String[] {
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"js", "org.mozilla.javascript.Scriptable",
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"javascript", "org.mozilla.javascript.Scriptable",
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"jacl", "tcl.lang.Interp",
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"netrexx", "netrexx.lang.Rexx",
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"nrx", "netrexx.lang.Rexx",
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"jython", "org.python.core.Py",
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"py", "org.python.core.Py",
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"xslt", "org.apache.xpath.objects.XObject"};
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/** A map of languages for which the engine in located in bsf */
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private static final Map BSF_LANGUAGE_MAP = new HashMap();
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static {
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for (int i = 0; i < BSF_LANGUAGES.length; i = i + 2) {
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BSF_LANGUAGE_MAP.put(BSF_LANGUAGES[i], BSF_LANGUAGES[i + 1]);
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}
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}
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private File getClassSource(ClassLoader loader, String className) {
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return LoaderUtils.getResourceSource(
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loader,
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LoaderUtils.classNameToResource(className));
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}
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private File getClassSource(String className) {
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return getClassSource(getClass().getClassLoader(), className);
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}
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/**
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* Check if need to mess about with the classloader.
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* The class loader will need to be modified for two
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* reasons:
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* <ol>
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* <li>language is at a higher level than bsf for engines in bsf,
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* move bsf.
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* </li>
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* <li>bsf is at a higher level than oata.util.optional.ScriptRunner
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* </li>
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* </ol>
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*
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* Assume a simple model for the loader:
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* thisloader<-customloader
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* or
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* thisloader
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*
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* @param loader the classloader to fix.
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* @param language the language to use.
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*/
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public void fixClassLoader(ClassLoader loader, String language) {
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if (loader == getClass().getClassLoader()
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|| !(loader instanceof AntClassLoader)) {
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return;
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}
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ClassLoader myLoader = getClass().getClassLoader();
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AntClassLoader fixLoader = (AntClassLoader) loader;
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// Check for location of bsf in this classloader
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File bsfSource = getClassSource(BSF_MANAGER);
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// If bsf is not in the classloader for this, need to move
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// runner.
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boolean needMoveRunner = (bsfSource == null);
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// Check for location of language
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String languageClassName = (String) BSF_LANGUAGE_MAP.get(language);
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// Check if need to need to move bsf
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boolean needMoveBsf =
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bsfSource != null
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&& languageClassName != null
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&& !LoaderUtils.classExists(myLoader, languageClassName)
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&& LoaderUtils.classExists(loader, languageClassName);
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// Update need to move runner
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needMoveRunner = needMoveRunner || needMoveBsf;
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// Check if bsf in place
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if (bsfSource == null) {
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bsfSource = getClassSource(loader, BSF_MANAGER);
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}
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if (bsfSource == null) {
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throw new BuildException(
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"Unable to find BSF classes for scripting");
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}
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if (needMoveBsf) {
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fixLoader.addPathComponent(bsfSource);
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fixLoader.addLoaderPackageRoot(BSF_PACKAGE);
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}
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if (needMoveRunner) {
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fixLoader.addPathComponent(
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LoaderUtils.getResourceSource(
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fixLoader,
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LoaderUtils.classNameToResource(BSF_SCRIPT_RUNNER)));
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fixLoader.addLoaderPackageRoot(UTIL_OPTIONAL_PACKAGE);
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}
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}
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}
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/* |
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* 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 |
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|
* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
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|
* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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package org.apache.tools.ant.util; |
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import org.apache.tools.ant.AntClassLoader; |
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import org.apache.tools.ant.BuildException; |
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import java.io.File; |
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import java.util.Map; |
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import java.util.HashMap; |
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|
|
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/** |
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* A class to modify a classloader to |
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* support BSF language support. |
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*/ |
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public class ScriptFixBSFPath { |
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private static final String UTIL_OPTIONAL_PACKAGE |
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= "org.apache.tools.ant.util.optional"; |
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private static final String BSF_PACKAGE = "org.apache.bsf"; |
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private static final String BSF_MANAGER = BSF_PACKAGE + ".BSFManager"; |
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private static final String BSF_SCRIPT_RUNNER |
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= UTIL_OPTIONAL_PACKAGE + ".ScriptRunner"; |
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/** |
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* The following are languages that have |
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* scripting engines embedded in bsf.jar. |
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* The array is converted to a map of |
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* languagename->classname. |
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*/ |
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private static final String[] BSF_LANGUAGES = |
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new String[] { |
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"js", "org.mozilla.javascript.Scriptable", |
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"javascript", "org.mozilla.javascript.Scriptable", |
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"jacl", "tcl.lang.Interp", |
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"netrexx", "netrexx.lang.Rexx", |
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"nrx", "netrexx.lang.Rexx", |
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"jython", "org.python.core.Py", |
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"py", "org.python.core.Py", |
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"xslt", "org.apache.xpath.objects.XObject"}; |
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/** A map of languages for which the engine in located in bsf */ |
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private static final Map BSF_LANGUAGE_MAP = new HashMap(); |
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static { |
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for (int i = 0; i < BSF_LANGUAGES.length; i = i + 2) { |
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BSF_LANGUAGE_MAP.put(BSF_LANGUAGES[i], BSF_LANGUAGES[i + 1]); |
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} |
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} |
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private File getClassSource(ClassLoader loader, String className) { |
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return LoaderUtils.getResourceSource( |
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loader, |
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LoaderUtils.classNameToResource(className)); |
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} |
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private File getClassSource(String className) { |
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return getClassSource(getClass().getClassLoader(), className); |
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} |
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/** |
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* Check if need to mess about with the classloader. |
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|
* The class loader will need to be modified for two |
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|
* reasons: |
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* <ol> |
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* <li>language is at a higher level than bsf for engines in bsf, |
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* move bsf. |
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* </li> |
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* <li>bsf is at a higher level than oata.util.optional.ScriptRunner |
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* </li> |
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* </ol> |
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* |
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* Assume a simple model for the loader: |
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* thisloader<-customloader |
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* or |
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* thisloader |
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* |
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* @param loader the classloader to fix. |
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* @param language the language to use. |
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*/ |
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public void fixClassLoader(ClassLoader loader, String language) { |
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if (loader == getClass().getClassLoader() |
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|| !(loader instanceof AntClassLoader)) { |
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return; |
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} |
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ClassLoader myLoader = getClass().getClassLoader(); |
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AntClassLoader fixLoader = (AntClassLoader) loader; |
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// Check for location of bsf in this classloader |
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File bsfSource = getClassSource(BSF_MANAGER); |
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// If bsf is not in the classloader for this, need to move |
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// runner. |
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boolean needMoveRunner = (bsfSource == null); |
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// Check for location of language |
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String languageClassName = (String) BSF_LANGUAGE_MAP.get(language); |
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// Check if need to need to move bsf |
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boolean needMoveBsf = |
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bsfSource != null |
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&& languageClassName != null |
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&& !LoaderUtils.classExists(myLoader, languageClassName) |
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&& LoaderUtils.classExists(loader, languageClassName); |
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// Update need to move runner |
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needMoveRunner = needMoveRunner || needMoveBsf; |
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// Check if bsf in place |
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if (bsfSource == null) { |
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bsfSource = getClassSource(loader, BSF_MANAGER); |
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} |
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if (bsfSource == null) { |
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throw new BuildException( |
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"Unable to find BSF classes for scripting"); |
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} |
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if (needMoveBsf) { |
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fixLoader.addPathComponent(bsfSource); |
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fixLoader.addLoaderPackageRoot(BSF_PACKAGE); |
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} |
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if (needMoveRunner) { |
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fixLoader.addPathComponent( |
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LoaderUtils.getResourceSource( |
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fixLoader, |
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LoaderUtils.classNameToResource(BSF_SCRIPT_RUNNER))); |
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fixLoader.addLoaderPackageRoot(UTIL_OPTIONAL_PACKAGE); |
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} |
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} |
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} |
Peter Reilly