/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

package com.sun.star.filter.config.tools.merge;

//_______________________________________________

import java.lang.*;
import java.util.*;
import java.io.*;
import com.sun.star.filter.config.tools.utils.*;

//_______________________________________________

/**
 *  Its a simple command line tool, which can merge different XML fragments
 *  together. Such fragments must exist as files on disk, will be moved into
 *  one file together on disk.
 *
 *
 */
public class FCFGMerge
{
    //___________________________________________
    // const

    private static final java.lang.String CFGFILE = "com/sun/star/filter/config/tools/merge/FCFGMerge.cfg";
    private static final java.lang.String PROP_LOGLEVEL = "loglevel";

    //___________________________________________
    // main

    public static void main(java.lang.String[] sCmdLine)
    {
        // create log object in default mode "WARNINGS"
        // If a command line parameter indicates another
        // level - change it!
        Logger aLog = new Logger();

        try
        {
            // merge config file and overwrite properties
            // via command line
            ConfigHelper aCfg = null;
            aCfg = new ConfigHelper(CFGFILE, sCmdLine);

            // update log level
            int nLogLevel = aCfg.getInt(PROP_LOGLEVEL, Logger.LEVEL_WARNINGS);
            aLog = new Logger(nLogLevel);

            // help requested?
            if (aCfg.isHelp())
            {
                FCFGMerge.printCopyright();
                FCFGMerge.printHelp();
                System.exit(-1);
            }

            // create new merge object and start operation
            Merger aMerger = new Merger(aCfg, aLog);
            aMerger.merge();
        }
        catch(java.lang.Throwable ex)
        {
            aLog.setException(ex);
            System.exit(-1);
        }

        System.exit(0);
    }

    //___________________________________________

    /** prints out a copyright message on stdout.
     */
    private static void printCopyright()
    {
        java.lang.StringBuffer sOut = new java.lang.StringBuffer(256);
        sOut.append("FCFGMerge (LibreOffice)\n\n");
        sOut.append("Copyright (C) 2003 Sun Microsystems, Inc.\n");
        sOut.append("Copyright (C) 2012 The Document Foundation\n");
        sOut.append("License LGPLv3: GNU LGPL version 3 <http://www.gnu.org/licenses/lgpl.html>.\n");
        sOut.append("This is free software: you are free to change and redistribute it.\n");
        sOut.append("There is NO WARRANTY, to the extent permitted by law.\n");
        System.out.println(sOut.toString());
    }

    //___________________________________________

    /** prints out a help message on stdout.
     */
    private static void printHelp()
    {
        java.lang.StringBuffer sOut = new java.lang.StringBuffer(256);
        sOut.append("____________________________________________________________\n");
        sOut.append("usage: FCFGMerge cfg=<file name>\n"                            );
        sOut.append("parameters:\n"                                                 );
        sOut.append("\tcfg=<file name>\n"                                           );
        sOut.append("\t\tmust point to a system file, which contains\n"             );
        sOut.append("\t\tall neccessary configuration data for the merge process.\n");
        sOut.append("\n\tFurther cou can specify every parameter allowed in the\n"  );
        sOut.append("\n\tconfig file as command line parameter too, to overwrite\n" );
        sOut.append("\n\tthe value from the file.\n"                                );
        System.out.println(sOut.toString());
    }
}