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#!/usr/bin/python
# -*- coding: utf-8 -*-
# Copyright (C) 2008,2015 Sergey Poznyakoff
# 
# 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, 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/>.

from __future__ import print_function
import sys
from optparse import OptionParser
try:
    from StringIO import StringIO
except ImportError:
    from io import StringIO
from WikiTrans.wiki2html  import HtmlWikiMarkup, HtmlWiktionaryMarkup
from WikiTrans.wiki2text  import TextWikiMarkup, TextWiktionaryMarkup
from WikiTrans.wiki2texi  import TexiWikiMarkup
from WikiTrans.wikimarkup import WikiMarkup

class DumpWikiMarkup (WikiMarkup):
    def __str__(self):
        if self.tree:
            s = StringIO()
            self.dump(self.tree, 0, s)
            return s.getvalue()
        else:
            return ""

handlers = {
    'dump': {
        'default': DumpWikiMarkup
    },
    'html': {
        'default': HtmlWikiMarkup,
        'wiktionary': HtmlWiktionaryMarkup
    },
    'text': {
        'default': TextWikiMarkup,
        'wiktionary': TextWiktionaryMarkup
    },
    'texi': {
        'default': TexiWikiMarkup
    }
}

def setkw(option, opt, value, parser):
    if not parser.values.kwdict:
        parser.values.kwdict = {}
    (kw,sep,val) = value.partition('=')
    if val:
        parser.values.kwdict[kw] = val

def main():
    usage = '%prog [OPTIONS] FILE'
    version = '%prog 1.0'
    description = """Translates MediaWiki documents markup to various other formats.
"""
    epilog = "Report bugs to: <gray+wikitrans@gnu.org.ua>"
    
    parser = OptionParser(usage=usage,
                          version=version,
                          description=description,
                          epilog=epilog)
    parser.add_option('-v', '--verbose',
                      action="count", dest="verbose",
                      help="verbose operation")
    parser.add_option('-I', '--input-type',
                      action='store', type='string', dest='itype',
                      default='default',
                      help='set input document type')
    parser.add_option('-t', '--to', '--type',
                      action='store', type='string', dest='otype',
                      default='html',
                      help='set output document type')
    parser.add_option('-l', '--lang',
                      action='store', type='string', dest='lang',
                      default='pl',
                      help='set input document language')
    parser.add_option('-o', '--option',
                      action='callback', callback=setkw,
                      type='string', dest='kwdict',
                      default={},
                      help='set keyword option for the parser class')
    parser.add_option('-d', '--debug',
                      action='store', type='int', dest='debug',
                      default=0,
                      help='set debug level (0..100)')
    parser.add_option('-D', '--dump',
                      action='store_const', const='dump',
                      dest='otype',
                      help='dump parse tree and exit; similar to --type=dump')

    (options, args) = parser.parse_args()
    
    if len(args) == 1:
        if args[0] == '-':
            options.kwdict['file'] = sys.stdin
        else:
            options.kwdict['filename'] = args[0]
    else:
        parser.error("bad number of arguments")
        
    options.kwdict['lang'] = options.lang # FIXME

    if options.otype in handlers:
        if options.itype in handlers[options.otype]:
            markup = handlers[options.otype][options.itype](**options.kwdict)
            markup.debug_level = options.debug
            markup.parse()
            print("%s" % str(markup))
            exit(0)
        else:
            print("unsupported input type: %s" % options.itype)
    else:
        print("unsupported output type: %s" % options.otype)
    exit(1)

if __name__ == '__main__':
    main()            

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