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git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2184 b35dd754-fafc-0310-a699-88a17e54d16e
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Gaston Dombiak 2003-12-19 18:17:36 +00:00 committed by gdombiak
parent b3a4c76f1f
commit f462850768
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14
build/resources/META-INF/smack.configuration Normal file
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<?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>

160
source/org/jivesoftware/smack/SmackConfiguration.java Normal file
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/**
* $RCSfile$
* $Revision$
* $Date$
*
* 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;
}
}