/* LICENSE BLOCK
Part of mde: a Modular D game-oriented Engine
Copyright © 2007-2008 Diggory Hardy

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 2 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/>. */

/**************************************************************************************************
 * A small program for reading and writing mergetag files.
 *
 * Note that it's limited to copying data types which DefaultData can handle due to the nature of
 * mergetag's extendability.
 *************************************************************************************************/
module ut.mtcp;

import mde.mergetag.Reader;
import mde.mergetag.Writer;
import mde.mergetag.exception;

import tango.io.Stdout;
import tango.io.FilePath;

// Logger, used by mergetag:
import tango.util.log.Config;

int main (char[][] args)
{
    char[] inFile, outFile;
    bool badOpts = false;
    bool helpOnly = false;
    
    foreach (arg; args[1..$]) {
        if (arg == "-h" || arg == "--help")
            helpOnly = true;
        else {
            if (inFile is null)
                inFile = arg;
            else if (outFile is null)
                outFile = arg;
            else {
                badOpts = true;
                helpOnly = true;
            }
        }
    }
    if (outFile is null)
        helpOnly = badOpts = true;
    if (helpOnly) {
        if (badOpts)
            Stdout ("Error: bad options!").newline;
        Stdout ("Usage:").newline.opCall(args[0])(" [options] input_file output_file").newline;
        Stdout ("Options:").newline.opCall("-h\t--help\tPrint help message").newline;
        if (badOpts)
            return 1;
        else return 0;
    }
    
    IReader reader;
    try {
        reader = makeReader (FilePath(inFile), null, true);
        reader.read;
    } catch (MTException mte) {
        Stdout ("While reading "~inFile~":").newline;
        Stdout ("Mergetag exception:").newline.opCall(mte.msg).newline;
        return 2;
    } catch (Exception e) {
        Stdout ("While reading "~inFile~":").newline;
        Stdout ("Unhandled exception:").newline.opCall(e.msg).newline;
        return 2;
    }
    
    try {
        IWriter writer = makeWriter (outFile, reader.dataset, WriterMethod.FromExtension);
        writer.write;
    } catch (MTException mte) {
        Stdout ("While writing "~outFile~":").newline;
        Stdout ("Mergetag exception:").newline.opCall(mte.msg).newline;
        return 3;
    } catch (Exception e) {
        Stdout ("While writing "~outFile~":").newline;
        Stdout ("Unhandled exception:").newline.opCall(e.msg).newline;
        return 3;
    }
    
    Stdout ("Copy successful: "~inFile~" -> "~outFile).newline;
    return 0;
}