Java Script Engine listGems(ScriptEngine jruby)

Description

Used to print a list of install gems to stdout

License

Open Source License

Parameter

Parameter	Description
jruby	The jruby scripting engine

Exception

Parameter	Description
ScriptException	Thrown if their are any ruby problems

Declaration

@SuppressWarnings("nls")
public static void listGems(ScriptEngine jruby) throws ScriptException 

Method Source Code

//package com.java2s;
/*/*from   w  ww .  ja v a 2s  . co  m*/
 *  Copyright (C) 2008-2011  John-Paul.Stanford <dev@stanwood.org.uk>
 *
 *  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, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  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, see <http://www.gnu.org/licenses/>.
 */

import javax.script.ScriptEngine;
import javax.script.ScriptException;

public class Main {
    /**
     * Used to print a list of install gems to stdout
     * @param jruby The jruby scripting engine
     * @throws ScriptException Thrown if their are any ruby problems
     */
    @SuppressWarnings("nls")
    public static void listGems(ScriptEngine jruby) throws ScriptException {
        StringBuilder script = new StringBuilder();
        script.append("require 'rubygems'\n");
        script.append("require 'rubygems/gem_runner'\n");
        script.append("Gem::GemRunner.new.run [\"list\"]\n");
        jruby.eval(script.toString());
    }
}

Related

1. getScriptEngineManager()
2. getStringOrExcept(ScriptEngine e, String vname)
3. getVersionString(ScriptEngineFactory factory)
4. importClass(ScriptEngine e, Class pkg, Bindings... b)
5. isJsEngineAvailable(String engineName, Logger logger)
6. listScriptEngines()
7. registerFactoryToManager(ScriptEngineFactory factory, ScriptEngineManager scriptEngineManager)
8. retrieveEngineByName(ScriptEngineManager scriptEngineManager, String engineName)
9. scriptEngine(String epStr, Map per)