/*
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* Copyright 2012 gitblit.com.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.gitblit.authority;
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import java.awt.Color;
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import java.awt.EventQueue;
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import java.awt.FontMetrics;
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import java.awt.Graphics2D;
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import java.awt.SplashScreen;
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import java.io.File;
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import java.io.FileFilter;
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import java.io.IOException;
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import java.lang.reflect.Method;
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import java.net.URL;
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import java.net.URLClassLoader;
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import java.text.MessageFormat;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import com.gitblit.Constants;
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import com.gitblit.client.Translation;
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/**
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* Downloads dependencies and launches Gitblit Authority.
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*
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* @author James Moger
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*
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*/
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public class Launcher {
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public static final boolean DEBUG = false;
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/**
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* Parameters of the method to add an URL to the System classes.
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*/
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private static final Class<?>[] PARAMETERS = new Class[] { URL.class };
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public static void main(String[] args) {
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final SplashScreen splash = SplashScreen.getSplashScreen();
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File libFolder = new File("ext");
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List<File> jars = findJars(libFolder.getAbsoluteFile());
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// sort the jars by name and then reverse the order so the newer version
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// of the library gets loaded in the event that this is an upgrade
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Collections.sort(jars);
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Collections.reverse(jars);
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for (File jar : jars) {
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try {
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updateSplash(splash, Translation.get("gb.loading") + " " + jar.getName() + "...");
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addJarFile(jar);
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} catch (IOException e) {
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}
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}
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updateSplash(splash, Translation.get("gb.starting") + " Gitblit Authority...");
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GitblitAuthority.main(args);
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}
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private static void updateSplash(final SplashScreen splash, final String string) {
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if (splash == null) {
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return;
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}
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try {
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EventQueue.invokeAndWait(new Runnable() {
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public void run() {
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Graphics2D g = splash.createGraphics();
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if (g != null) {
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// Splash is 320x120
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FontMetrics fm = g.getFontMetrics();
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// paint startup status
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g.setColor(Color.darkGray);
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int h = fm.getHeight() + fm.getMaxDescent();
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int x = 5;
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int y = 115;
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int w = 320 - 2 * x;
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g.fillRect(x, y - h, w, h);
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g.setColor(Color.lightGray);
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g.drawRect(x, y - h, w, h);
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g.setColor(Color.WHITE);
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int xw = fm.stringWidth(string);
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g.drawString(string, x + ((w - xw) / 2), y - 5);
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// paint version
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String ver = "v" + Constants.getVersion();
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int vw = g.getFontMetrics().stringWidth(ver);
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g.drawString(ver, 320 - vw - 5, 34);
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g.dispose();
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splash.update();
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}
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}
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});
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} catch (Throwable t) {
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t.printStackTrace();
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}
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}
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public static List<File> findJars(File folder) {
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List<File> jars = new ArrayList<File>();
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if (folder.exists()) {
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File[] libs = folder.listFiles(new FileFilter() {
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@Override
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public boolean accept(File file) {
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return !file.isDirectory() && file.getName().toLowerCase().endsWith(".jar");
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}
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});
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if (libs != null && libs.length > 0) {
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jars.addAll(Arrays.asList(libs));
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if (DEBUG) {
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for (File jar : jars) {
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System.out.println("found " + jar);
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}
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}
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}
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}
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return jars;
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}
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/**
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* Adds a file to the classpath
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*
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* @param f
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* the file to be added
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* @throws IOException
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*/
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public static void addJarFile(File f) throws IOException {
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if (f.getName().indexOf("-sources") > -1 || f.getName().indexOf("-javadoc") > -1) {
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// don't add source or javadoc jars to runtime classpath
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return;
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}
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URL u = f.toURI().toURL();
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if (DEBUG) {
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System.out.println("load=" + u.toExternalForm());
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}
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URLClassLoader sysloader = (URLClassLoader) ClassLoader.getSystemClassLoader();
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Class<?> sysclass = URLClassLoader.class;
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try {
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Method method = sysclass.getDeclaredMethod("addURL", PARAMETERS);
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method.setAccessible(true);
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method.invoke(sysloader, new Object[] { u });
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} catch (Throwable t) {
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throw new IOException(MessageFormat.format(
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"Error, could not add {0} to system classloader", f.getPath()), t);
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}
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}
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}
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