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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
*
* 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.fop.cli;
import java.io.File;
import java.io.FileFilter;
import java.io.OutputStream;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;
import org.apache.commons.io.IOUtils;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.apps.MimeConstants;
/**
* Main command-line class for Apache FOP.
*/
public class Main {
/**
* @return the list of URLs to all libraries.
* @throws MalformedURLException In case there is a problem converting java.io.File
* instances to URLs.
*/
public static URL[] getJARList() throws MalformedURLException {
String fopHome = System.getProperty("fop.home");
File baseDir;
if (fopHome != null) {
baseDir = new File(fopHome).getAbsoluteFile();
} else {
baseDir = new File(".").getAbsoluteFile().getParentFile();
}
File buildDir;
if ("build".equals(baseDir.getName())) {
buildDir = baseDir;
baseDir = baseDir.getParentFile();
} else {
buildDir = new File(baseDir, "build");
}
File fopJar = new File(buildDir, "fop.jar");
if (!fopJar.exists()) {
fopJar = new File(baseDir, "fop.jar");
}
if (!fopJar.exists()) {
throw new RuntimeException("fop.jar not found in directory: "
+ baseDir.getAbsolutePath() + " (or below)");
}
List jars = new java.util.ArrayList();
jars.add(fopJar.toURL());
File[] files;
FileFilter filter = new FileFilter() {
public boolean accept(File pathname) {
return pathname.getName().endsWith(".jar");
}
};
File libDir = new File(baseDir, "lib");
if (!libDir.exists()) {
libDir = baseDir;
}
files = libDir.listFiles(filter);
if (files != null) {
for (int i = 0, size = files.length; i < size; i++) {
jars.add(files[i].toURL());
}
}
String optionalLib = System.getProperty("fop.optional.lib");
if (optionalLib != null) {
files = new File(optionalLib).listFiles(filter);
if (files != null) {
for (int i = 0, size = files.length; i < size; i++) {
jars.add(files[i].toURL());
}
}
}
URL[] urls = (URL[])jars.toArray(new URL[jars.size()]);
/*
for (int i = 0, c = urls.length; i < c; i++) {
System.out.println(urls[i]);
}*/
return urls;
}
/**
* @return true if FOP's dependecies are available in the current ClassLoader setup.
*/
public static boolean checkDependencies() {
try {
//System.out.println(Thread.currentThread().getContextClassLoader());
Class clazz = Class.forName("org.apache.commons.io.IOUtils");
if (clazz != null) {
clazz = Class.forName("org.apache.avalon.framework.configuration.Configuration");
}
return (clazz != null);
} catch (Exception e) {
return false;
}
}
/**
* Dynamically builds a ClassLoader and executes FOP.
* @param args command-line arguments
*/
public static void startFOPWithDynamicClasspath(String[] args) {
try {
URL[] urls = getJARList();
//System.out.println("CCL: "
// + Thread.currentThread().getContextClassLoader().toString());
ClassLoader loader = new java.net.URLClassLoader(urls, null);
Thread.currentThread().setContextClassLoader(loader);
Class clazz = Class.forName("org.apache.fop.cli.Main", true, loader);
//System.out.println("CL: " + clazz.getClassLoader().toString());
Method mainMethod = clazz.getMethod("startFOP", new Class[] {String[].class});
mainMethod.invoke(null, new Object[] {args});
} catch (Exception e) {
System.err.println("Unable to start FOP:");
e.printStackTrace();
System.exit(-1);
}
}
/**
* Executes FOP with the given ClassLoader setup.
* @param args command-line arguments
*/
public static void startFOP(String[] args) {
//System.out.println("static CCL: "
// + Thread.currentThread().getContextClassLoader().toString());
//System.out.println("static CL: " + Fop.class.getClassLoader().toString());
CommandLineOptions options = null;
FOUserAgent foUserAgent = null;
OutputStream out = null;
try {
options = new CommandLineOptions();
options.parse(args);
foUserAgent = options.getFOUserAgent();
String outputFormat = options.getOutputFormat();
try {
if (options.getOutputFile() != null) {
out = new java.io.BufferedOutputStream(
new java.io.FileOutputStream(options.getOutputFile()));
foUserAgent.setOutputFile(options.getOutputFile());
}
if (!MimeConstants.MIME_XSL_FO.equals(outputFormat)) {
options.getInputHandler().renderTo(foUserAgent, outputFormat, out);
} else {
options.getInputHandler().transformTo(out);
}
} finally {
IOUtils.closeQuietly(out);
}
// System.exit(0) called to close AWT/SVG-created threads, if any.
// AWTRenderer closes with window shutdown, so exit() should not
// be called here
if (!MimeConstants.MIME_FOP_AWT_PREVIEW.equals(outputFormat)) {
System.exit(0);
}
} catch (Exception e) {
if (options != null) {
options.getLogger().error("Exception", e);
}
if (options.getOutputFile() != null) {
options.getOutputFile().delete();
}
System.exit(1);
}
}
/**
* The main routine for the command line interface
* @param args the command line parameters
*/
public static void main(String[] args) {
if (checkDependencies()) {
startFOP(args);
} else {
startFOPWithDynamicClasspath(args);
}
}
}
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