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