package example;

import java.io.*;
import org.osgi.framework.launch.*;
import org.apache.felix.main.AutoProcessor;

public class Main
{
    private static Framework m_fwk = null;

    public static void main(String[] argv) throws Exception
    {
        // Print welcome banner.
        System.out.println("\nWelcome to My Launcher");
        System.out.println("======================\n");

        try
        {
            m_fwk = getFrameworkFactory().newFramework(null);
            m_fwk.init();
            AutoProcessor.process(null, m_fwk.getBundleContext());
            m_fwk.start();
            m_fwk.waitForStop(0);
            System.exit(0);
        }
        catch (Exception ex)
        {
            System.err.println("Could not create framework: " + ex);
            ex.printStackTrace();
            System.exit(-1);
        }
    }

    private static FrameworkFactory getFrameworkFactory() throws Exception
    {
        java.net.URL url = Main.class.getClassLoader().getResource(
            "META-INF/services/org.osgi.framework.launch.FrameworkFactory");
        if (url != null)
        {
            BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));
            try
            {
                for (String s = br.readLine(); s != null; s = br.readLine())
                {
                    s = s.trim();
                    // Try to load first non-empty, non-commented line.
                    if ((s.length() > 0) && (s.charAt(0) != '#'))
                    {
                        return (FrameworkFactory) Class.forName(s).newInstance();
                    }
                }
            }
            finally
            {
                if (br != null) br.close();
            }
        }

        throw new Exception("Could not find framework factory.");
    }
}