Initial check-in

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2184 b35dd754-fafc-0310-a699-88a17e54d16e

build/resources/META-INF/smack.configuration

@@ -0,0 +1,14 @@
+<?xml version="1.0"?> 
+<!-- Configuration file to load at system start up -->
+<smackSystem> 
+    
+    <!-- Classes to load at start up -->
+    <classesToLoad> 
+        <className>org.jivesoftware.smackx.ServiceDiscoveryManager</className> 
+        <className>org.jivesoftware.smackx.XHTMLManager</className> 
+    </classesToLoad>
+    
+    <!-- Smack Release -->
+    <versionNumber>1.3.0</versionNumber> 
+
+</smackSystem>

source/org/jivesoftware/smack/SmackConfiguration.java

@@ -0,0 +1,160 @@
+/**
+* $RCSfile$
+* $Revision$
+* $Date$
+*
+* Copyright (C) 2002-2003 Jive Software. All rights reserved.
+* ====================================================================
+* The Jive Software License (based on Apache Software License, Version 1.1)
+*
+* 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 acknowledgment:
+*       "This product includes software developed by
+*        Jive Software (http://www.jivesoftware.com)."
+*    Alternately, this acknowledgment may appear in the software itself,
+*    if and wherever such third-party acknowledgments normally appear.
+*
+* 4. The names "Smack" and "Jive Software" must not be used to
+*    endorse or promote products derived from this software without
+*    prior written permission. For written permission, please
+*    contact webmaster@jivesoftware.com.
+*
+* 5. Products derived from this software may not be called "Smack",
+*    nor may "Smack" appear in their name, without prior written
+*    permission of Jive Software.
+*
+* 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 JIVE SOFTWARE 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.
+* ====================================================================
+*/
+
+package org.jivesoftware.smack;
+
+import java.io.*;
+import java.net.*;
+import java.util.*;
+
+import org.xmlpull.v1.*;
+
+/**
+ * Represents the configuration of Smack. The configuration is used for:
+ * <ul>
+ *      <li> Initializing classes by loading them at start-up.
+ *      <li> Getting the current Smack version.
+ * </ul>
+ * 
+ * @author Gaston Dombiak
+ */
+public final class SmackConfiguration {
+
+    private static String versionNumber;
+
+    private SmackConfiguration() {
+    }
+
+    /**
+     * Loads the configuration from the smack.configuration file.<p>
+     * 
+     * So far this means that:
+     * 1) a set of classes will be loaded in order to execute their static init block
+     * 2) retrieve and set the current Smack release
+     *
+     */
+    static void init() {
+        try {
+            // Get an array of class loaders to try loading the providers files from.
+            ClassLoader[] classLoaders = getClassLoaders();
+            for (int i = 0; i < classLoaders.length; i++) {
+                Enumeration enum = classLoaders[i].getResources("META-INF/smack.configuration");
+                while (enum.hasMoreElements()) {
+                    URL url = (URL) enum.nextElement();
+                    InputStream systemStream = null;
+                    try {
+                        systemStream = url.openStream();
+                        XmlPullParserFactory factory =
+                            XmlPullParserFactory.newInstance(
+                                "org.xmlpull.mxp1.MXParserFactory",
+                                null);
+                        factory.setNamespaceAware(true);
+                        XmlPullParser parser = factory.newPullParser();
+                        parser.setInput(systemStream, "UTF-8");
+                        int eventType = parser.getEventType();
+                        do {
+                            if (eventType == XmlPullParser.START_TAG) {
+                                if (parser.getName().equals("className")) {
+                                    String className = parser.nextText();
+                                    // Attempt to load the class so that the class can get initialized
+                                    try {
+                                        Class provider = Class.forName(className);
+                                    }
+                                    catch (ClassNotFoundException cnfe) {
+                                        cnfe.printStackTrace();
+                                    }
+                                }
+                                else if (parser.getName().equals("versionNumber")) {
+                                    versionNumber = parser.nextText();
+                                }
+                            }
+                            eventType = parser.next();
+                        }
+                        while (eventType != XmlPullParser.END_DOCUMENT);
+                    }
+                    finally {
+                        try {
+                            systemStream.close();
+                        }
+                        catch (Exception e) {
+                        }
+                    }
+                }
+            }
+        }
+        catch (Exception e) {
+        }
+    }
+    
+    /**
+     * Returns the current Smack release version. The version number value
+     * gets loaded from the smack.configuration file at system startup.
+     * 
+     * @return the current Smack release version number
+     */
+    public static String getVersionNumber() {
+        return versionNumber;
+    }
+
+    /**
+     * Returns an array of class loaders to load resources from.
+     *
+     * @return an array of ClassLoader instances.
+     */
+    private static ClassLoader[] getClassLoaders() {
+        ClassLoader[] classLoaders = new ClassLoader[3];
+        classLoaders[0] = new SmackConfiguration().getClass().getClassLoader();
+        classLoaders[1] = Thread.currentThread().getContextClassLoader();
+        classLoaders[2] = ClassLoader.getSystemClassLoader();
+        return classLoaders;
+    }
+}