/*
* RHQ Management Platform
* Copyright (C) 2005-2012 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.enterprise.client.commands;
import java.util.Properties;
import java.util.jar.Attributes;
import gnu.getopt.Getopt;
import gnu.getopt.LongOpt;
import org.rhq.enterprise.client.ClientMain;
import org.rhq.enterprise.client.Version;
import org.rhq.enterprise.client.script.CommandLineParseException;
/**
* Command to show the user the version information of the CLI.
*
* @author John Mazzitelli
*/
public class VersionCommand implements ClientCommand {
public String getPromptCommandString() {
return "version";
}
public boolean execute(ClientMain client, String[] args) {
VersionArgs versionArgs = parseArgs(args);
if (versionArgs.verbose) {
client.getPrintWriter().println(Version.getVersionPropertiesAsString());
} else {
Properties props = Version.getVersionProperties();
String version = props.getProperty(Attributes.Name.IMPLEMENTATION_VERSION.toString());
client.getPrintWriter().println(version);
}
return true;
}
public String getSyntax() {
return getPromptCommandString() + " [-v | --verbose]";
}
public String getHelp() {
return "Show CLI version information";
}
public String getDetailedHelp() {
return getHelp() + ". If no arguments are specified, the CLI's version is printed. If the verbose option is "
+ "specified, the values of the main attributes from the CLI jar's MANIFEST.MF are printed.";
}
private VersionArgs parseArgs(String[] args) {
String shortOpts = "-:v";
LongOpt[] longOpts = {
new LongOpt("verbose", LongOpt.OPTIONAL_ARGUMENT, null, 'v')
};
Getopt getopt = new Getopt(getPromptCommandString(), args, shortOpts, longOpts);
getopt.setOpterr(false);
VersionArgs versionArgs = new VersionArgs();
int code = getopt.getopt();
while (code != -1) {
switch (code) {
case ':':
throw new CommandLineParseException("Invalid option");
case 'v':
versionArgs.verbose = true;
break;
}
code = getopt.getopt();
}
return versionArgs;
}
private static class VersionArgs {
boolean verbose;
}
}