#! /usr/bin/python3
# -*- coding: utf-8 -*-
# Copyright (C) 2002-2011 The LyX Team
# Copyright (C) 2002-2007 José Matos <jamatos@lyx.org>
# Copyright (C) 2002-2004 Dekel Tsur <dekel@lyx.org>
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

" Program used to convert between different versions of the lyx file format."
import argparse
import sys
import LyX

# Provide support for both python 2 and 3
PY2 = sys.version_info[0] == 2
if PY2:
    # argparse returns strings in the commandline encoding, we need to convert.
    # sys.getdefaultencoding() would not always be correct, see
    # http://legacy.python.org/dev/peps/pep-0383/
    def cmd_arg(arg):
        return arg.decode(sys.getfilesystemencoding())
else:
    cmd_arg = str
# End of code to support for both python 2 and 3

def main():
    args = {}
    args["usage"] = "%(prog)s [options] [file]"

    args["description"] = """Convert old lyx file <file> to newer format,
    files can be compressed with gzip.  If there no file is specified then
    the standard input is assumed, in this case gziped files are not
    handled."""

    parser = argparse.ArgumentParser(**args)

    parser.set_defaults(debug=LyX.default_debug__, cjk_encoding = '')
    parser.add_argument("-d", "--debug", type=int, dest="debug",
                      help="level=0..2 (O_ quiet, 10_verbose) default: 2")
    parser.add_argument("-q", "--quiet",
                      action="store_const", const=0, dest="debug")
    parser.add_argument("-v", "--verbose",
                      action="store_const", const=1, dest="debug")
    parser.add_argument("--noisy",
                      action="store_const", const=10, dest="debug")
    parser.add_argument("-c", "--encoding", type=cmd_arg, dest="cjk_encoding",
                      help="Files in format 413 and lower are read and"
                           " written in the format of CJK-LyX."
                           " If encoding is not given or 'auto' the encoding"
                           " is determined from the locale.")
    parser.add_argument("-e", "--err", type=cmd_arg, dest="error",
                      help= "File name of the error file else goes to stderr.")
    parser.add_argument("-o", "--output", type=cmd_arg, dest="output",
                      help= "Name of the output file else goes to stdout.")
    parser.add_argument("-t", "--to", type=cmd_arg, dest= "end_format",
                      help= "Destination file format, default <latest>.")
    parser.add_argument("-V", "--final_version", type=cmd_arg, dest= "final_version",
                      help= "Destination version, default <latest>.")
    parser.add_argument("-l", "--list", action="store_true",
                      help = "List all available formats and supported versions.")
    parser.add_argument("-n", "--try-hard", action="store_true",
                      help = "Try hard (ignore any conversion errors).")
    parser.add_argument("-s", "--systemlyxdir", type=cmd_arg, dest= "systemlyxdir",
                      help= "LyX system directory for conversion from"
                            " version 489 or older.")
    parser.add_argument('--version', action='version', version="""lyx2lyx, version %s
                        Copyright (C) 2011 The LyX Team, José Matos and Dekel Tsur""" % LyX.version__)
    parser.add_argument("input", nargs='?', type=cmd_arg, default=None)

    options = parser.parse_args()

    if options.list:
        sys.stderr.write(LyX.format_info())
        sys.exit()
    else:
        del options.list

    doc = LyX.File(**options.__dict__)
    doc.convert()
    doc.write()

    sys.exit(doc.status)

if __name__ == "__main__":
    main()
