freemarker.ext.ant.JythonAntTask Maven / Gradle / Ivy
/*
* Copyright (c) 2003 The Visigoth Software Society. 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 acknowledgement:
* "This product includes software developed by the
* Visigoth Software Society (http://www.visigoths.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the
* project contributors may be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [email protected].
*
* 5. Products derived from this software may not be called "FreeMarker" or "Visigoth"
* nor may "FreeMarker" or "Visigoth" appear in their names
* without prior written permission of the Visigoth Software Society.
*
* 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 VISIGOTH SOFTWARE SOCIETY 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 Visigoth Software Society. For more
* information on the Visigoth Software Society, please see
* http://www.visigoths.org/
*/
package freemarker.ext.ant;
import java.io.*;
import java.util.Map;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.ProjectHelper;
import org.apache.tools.ant.Task;
import freemarker.template.utility.ClassUtil;
/**
* Used internally, public for technical reasons only.
*
* This is an Ant sub-task of the {@link FreemarkerXmlTask} task.
*
*
Warning! It must not be statically linked with Jython classes,
* so users can use the XML ant task even if Jython is not installed.
*/
public class JythonAntTask extends Task {
private File scriptFile;
private String script = "";
private UnlinkedJythonOperations jythonOps;
public void setFile(File scriptFile) throws BuildException {
ensureJythonOpsExists();
this.scriptFile = scriptFile;
}
public void addText(String text) {
script += text;
}
public void execute(Map vars) throws BuildException {
if (scriptFile != null) {
ensureJythonOpsExists();
jythonOps.execute(scriptFile, vars);
}
if (script.trim().length() >0) {
ensureJythonOpsExists();
String finalScript = ProjectHelper.replaceProperties(
project, script, project.getProperties());
jythonOps.execute(finalScript, vars);
}
}
private void ensureJythonOpsExists() {
if (jythonOps == null) {
Class clazz;
try {
clazz = ClassUtil.forName(
"freemarker.ext.ant.UnlinkedJythonOperationsImpl");
} catch (ClassNotFoundException e) {
throw new RuntimeException(
"A ClassNotFoundException has been thrown when trying "
+ "to get the "
+ "freemarker.ext.ant.UnlinkedJythonOperationsImpl class. "
+ "The error message was: " + e.getMessage());
}
try {
jythonOps
= (UnlinkedJythonOperations) clazz.newInstance();
} catch (Exception e) {
throw new RuntimeException(
"An exception has been thrown when trying "
+ "to create a freemarker.ext.ant.JythonAntTask "
+ "object. The exception was: " + e);
}
}
}
}