/*
* Copyright 2012 gitblit.com.
*
* 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 com.gitblit.authority;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.FontMetrics;
import java.awt.Graphics2D;
import java.awt.SplashScreen;
import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import com.gitblit.Constants;
import com.gitblit.client.Translation;
/**
* Downloads dependencies and launches Gitblit Authority.
*
* @author James Moger
*
*/
public class Launcher {
public static final boolean DEBUG = false;
/**
* Parameters of the method to add an URL to the System classes.
*/
private static final Class<?>[] PARAMETERS = new Class[] { URL.class };
public static void main(String[] args) {
final SplashScreen splash = SplashScreen.getSplashScreen();
File libFolder = new File("ext");
List<File> jars = findJars(libFolder.getAbsoluteFile());
// sort the jars by name and then reverse the order so the newer version
// of the library gets loaded in the event that this is an upgrade
Collections.sort(jars);
Collections.reverse(jars);
for (File jar : jars) {
try {
updateSplash(splash, Translation.get("gb.loading") + " " + jar.getName() + "...");
addJarFile(jar);
} catch (IOException e) {
}
}
updateSplash(splash, Translation.get("gb.starting") + " Gitblit Authority...");
GitblitAuthority.main(args);
}
private static void updateSplash(final SplashScreen splash, final String string) {
if (splash == null) {
return;
}
try {
EventQueue.invokeAndWait(new Runnable() {
@Override
public void run() {
Graphics2D g = splash.createGraphics();
if (g != null) {
// Splash is 320x120
FontMetrics fm = g.getFontMetrics();
// paint startup status
g.setColor(Color.darkGray);
int h = fm.getHeight() + fm.getMaxDescent();
int x = 5;
int y = 115;
int w = 320 - 2 * x;
g.fillRect(x, y - h, w, h);
g.setColor(Color.lightGray);
g.drawRect(x, y - h, w, h);
g.setColor(Color.WHITE);
int xw = fm.stringWidth(string);
g.drawString(string, x + ((w - xw) / 2), y - 5);
// paint version
String ver = "v" + Constants.getVersion();
int vw = g.getFontMetrics().stringWidth(ver);
g.drawString(ver, 320 - vw - 5, 34);
g.dispose();
splash.update();
}
}
});
} catch (Throwable t) {
t.printStackTrace();
}
}
public static List<File> findJars(File folder) {
List<File> jars = new ArrayList<File>();
if (folder.exists()) {
File[] libs = folder.listFiles(new FileFilter() {
@Override
public boolean accept(File file) {
return !file.isDirectory() && file.getName().toLowerCase().endsWith(".jar");
}
});
if (libs != null && libs.length > 0) {
jars.addAll(Arrays.asList(libs));
if (DEBUG) {
for (File jar : jars) {
System.out.println("found " + jar);
}
}
}
}
return jars;
}
/**
* Adds a file to the classpath
*
* @param f
* the file to be added
* @throws IOException
*/
public static void addJarFile(File f) throws IOException {
if (f.getName().indexOf("-sources") > -1 || f.getName().indexOf("-javadoc") > -1) {
// don't add source or javadoc jars to runtime classpath
return;
}
URL u = f.toURI().toURL();
if (DEBUG) {
System.out.println("load=" + u.toExternalForm());
}
URLClassLoader sysloader = (URLClassLoader) ClassLoader.getSystemClassLoader();
Class<?> sysclass = URLClassLoader.class;
try {
Method method = sysclass.getDeclaredMethod("addURL", PARAMETERS);
method.setAccessible(true);
method.invoke(sysloader, new Object[] { u });
} catch (Throwable t) {
throw new IOException(MessageFormat.format(
"Error, could not add {0} to system classloader", f.getPath()), t);
}
}
}