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/* |
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* The Apache Software License, Version 1.1 |
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* |
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* Copyright (c) 2003 The Apache Software Foundation. All rights |
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* reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, if |
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* any, must include the following acknowlegement: |
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* "This product includes software developed by the |
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* Apache Software Foundation (http://www.apache.org/)." |
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* Alternately, this acknowlegement may appear in the software itself, |
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* if and wherever such third-party acknowlegements normally appear. |
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* |
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* 4. The names "Ant" and "Apache Software |
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* Foundation" must not be used to endorse or promote products derived |
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* from this software without prior written permission. For written |
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* permission, please contact apache@apache.org. |
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* |
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* 5. Products derived from this software may not be called "Apache" |
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* nor may "Apache" appear in their names without prior written |
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* permission of the Apache Group. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of the Apache Software Foundation. For more |
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* information on the Apache Software Foundation, please see |
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* <http://www.apache.org/>. |
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*/ |
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package org.apache.tools.ant.util; |
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import java.io.File; |
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import java.io.FileInputStream; |
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import java.io.IOException; |
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import org.apache.bsf.BSFException; |
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import org.apache.bsf.BSFManager; |
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import org.apache.tools.ant.BuildException; |
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import java.util.Map; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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/** |
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* This class is used to run BSF scripts |
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* |
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* @author Sam Ruby <a href="mailto:rubys@us.ibm.com">rubys@us.ibm.com</a> |
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* @author Conor MacNeill |
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*/ |
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public class ScriptRunner { |
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/** Script language */ |
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private String language; |
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/** Script content */ |
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private String script = ""; |
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/** Beans to be provided to the script */ |
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private Map beans = new HashMap(); |
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/** |
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* Add a list of named objects to the list to be exported to the script |
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* |
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* @param dictionary a map of objects to be placed into the script context |
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* indexed by String names. |
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*/ |
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public void addBeans(Map dictionary) { |
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for (Iterator i = dictionary.keySet().iterator(); i.hasNext();) { |
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String key = (String) i.next(); |
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addBean(key, dictionary.get(key)); |
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} |
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} |
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/** |
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* Add a single object into the script context. |
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* |
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* @param key the name in the context this object is to stored under. |
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* @param bean the object to be stored in the script context. |
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*/ |
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public void addBean(String key, Object bean) { |
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boolean isValid = key.length() > 0 |
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&& Character.isJavaIdentifierStart(key.charAt(0)); |
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for (int i = 1; isValid && i < key.length(); i++) { |
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isValid = Character.isJavaIdentifierPart(key.charAt(i)); |
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} |
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if (isValid) { |
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beans.put(key, bean); |
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} |
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} |
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/** |
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* Do the work. |
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* |
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* @param execName the name that will be passed to BSF for this script |
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* execution. |
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* |
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* @exception BuildException if someting goes wrong exectuing the script. |
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*/ |
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public void executeScript(String execName) throws BuildException { |
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if (language == null) { |
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throw new BuildException("script language must be specified"); |
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} |
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try { |
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BSFManager manager = new BSFManager (); |
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for (Iterator i = beans.keySet().iterator(); i.hasNext();) { |
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String key = (String) i.next(); |
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Object value = beans.get(key); |
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manager.declareBean(key, value, value.getClass()); |
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} |
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// execute the script |
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manager.exec(language, execName, 0, 0, script); |
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} catch (BSFException be) { |
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Throwable t = be; |
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Throwable te = be.getTargetException(); |
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if (te != null) { |
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if (te instanceof BuildException) { |
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throw (BuildException) te; |
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} else { |
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t = te; |
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} |
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} |
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throw new BuildException(t); |
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} |
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} |
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/** |
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* Defines the language (required). |
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* |
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* @param language the scripting language name for the script. |
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*/ |
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public void setLanguage(String language) { |
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this.language = language; |
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} |
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/** |
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* Get the script language |
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* |
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* @return the script language |
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*/ |
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public String getLanguage() { |
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return language; |
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} |
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/** |
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* Load the script from an external file ; optional. |
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* |
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* @param file the file containing the script source. |
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*/ |
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public void setSrc(File file) { |
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if (!file.exists()) { |
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throw new BuildException("file " + file.getPath() + " not found."); |
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} |
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int count = (int) file.length(); |
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byte[] data = new byte[count]; |
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try { |
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FileInputStream inStream = new FileInputStream(file); |
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inStream.read(data); |
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inStream.close(); |
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} catch (IOException e) { |
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throw new BuildException(e); |
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} |
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script += new String(data); |
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} |
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/** |
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* Set the script text. |
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* |
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* @param text a component of the script text to be added. |
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*/ |
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public void addText(String text) { |
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this.script += text; |
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} |
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} |