org.apache.maven.wrapper.BootstrapMainStarter Maven / Gradle / Ivy
/*
* Copyright 2010 the original author or authors.
*
* Licensed 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.
*/
package org.apache.maven.wrapper;
import java.io.File;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
/**
* @author Hans Dockter
*/
public class BootstrapMainStarter {
public void start(String[] args, File mavenHome) throws Exception {
File mavenJar = findLauncherJar(mavenHome);
URLClassLoader contextClassLoader = new URLClassLoader(new URL[] {
mavenJar.toURI().toURL()
}, ClassLoader.getSystemClassLoader().getParent());
Thread.currentThread().setContextClassLoader(contextClassLoader);
Class mainClass = contextClassLoader.loadClass("org.codehaus.plexus.classworlds.launcher.Launcher");
System.setProperty("maven.home", mavenHome.getAbsolutePath());
System.setProperty("classworlds.conf", new File(mavenHome, "/bin/m2.conf").getAbsolutePath());
Method mainMethod = mainClass.getMethod("main", String[].class);
mainMethod.invoke(null, new Object[] {
args
});
}
private File findLauncherJar(File mavenHome) {
for (File file : new File(mavenHome, "boot").listFiles()) {
if (file.getName().matches("plexus-classworlds-.*\\.jar")) {
return file;
}
}
throw new RuntimeException(String.format("Could not locate the Maven launcher JAR in Maven distribution '%s'.", mavenHome));
}
}