org.mobicents.ss7.management.console.Version Maven / Gradle / Ivy
/*
* TeleStax, Open Source Cloud Communications Copyright 2012.
* and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.mobicents.ss7.management.console;
import java.io.InputStream;
import java.util.Collections;
import java.util.Map;
import java.util.Properties;
/**
* Version class reads the version.properties packaged with cli.jar for run time display of Version
*
* @author amit.bhayani
*
*/
public final class Version {
/**
* The single instance.
*/
public static final Version instance = new Version();
/**
* The version properties.
*/
private Properties props;
/**
* Do not allow direct public construction.
*/
private Version() {
props = loadProperties();
}
/**
* Returns an unmodifiable map of version properties.
*
* @return
*/
public Map getProperties() {
return Collections.unmodifiableMap(props);
}
/**
* Returns the value for the given property name.
*
* @param name - The name of the property.
* @return The property value or null if the property is not set.
*/
public String getProperty(final String name) {
return props.getProperty(name);
}
/**
* Returns the version information as a string.
*
* @return Basic information as a string.
*/
public String toString() {
StringBuilder sb = new StringBuilder();
boolean first = true;
for (Object key : props.keySet()) {
if (first) {
first = false;
} else {
sb.append(",");
}
sb.append(key).append('=').append(props.get(key));
}
return sb.toString();
}
/**
* Load the version properties from a resource.
*/
private Properties loadProperties() {
props = new Properties();
try {
InputStream in = Version.class.getResourceAsStream("version.properties");
props.load(in);
in.close();
} catch (Exception e) {
throw new Error("Missing version.properties");
}
return props;
}
}