#!/usr/bin/env python

"""

    Convert the X11 locale.alias file into a mapping dictionary suitable

    for locale.py.

    Written by Marc-Andre Lemburg <mal@genix.com>, 2004-12-10.

"""

import locale

# Location of the alias file

LOCALE_ALIAS = '/usr/lib/X11/locale/locale.alias'

def parse(filename):

    f = open(filename)

    lines = f.read().splitlines()

    data = {}

    for line in lines:

        line = line.strip()

        if not line:

            continue

        if line[:1] == '#':

            continue

        locale, alias = line.split()

        # Strip ':'

        if locale[-1] == ':':

            locale = locale[:-1]

        # Lower-case locale

        locale = locale.lower()

        # Ignore one letter locale mappings (except for 'c')

        if len(locale) == 1 and locale != 'c':

            continue

        # Normalize encoding, if given

        if '.' in locale:

            lang, encoding = locale.split('.')[:2]

            encoding = encoding.replace('-', '')

            encoding = encoding.replace('_', '')

            locale = lang + '.' + encoding

            if encoding.lower() == 'utf8':

                # Ignore UTF-8 mappings - this encoding should be

                # available for all locales

                continue

        data[locale] = alias

    return data

def pprint(data):

    items = data.items()

    items.sort()

    for k,v in items:

        print '    %-40s%r,' % ('%r:' % k, v)

def print_differences(data, olddata):

    items = olddata.items()

    items.sort()

    for k, v in items:

        if not data.has_key(k):

            print '#    removed %r' % k

        elif olddata[k] != data[k]:

            print '#    updated %r -> %r to %r' % \

                  (k, olddata[k], data[k])

        # Additions are not mentioned

if __name__ == '__main__':

    data = locale.locale_alias.copy()

    data.update(parse(LOCALE_ALIAS))

    print_differences(data, locale.locale_alias)

    print

    print 'locale_alias = {'

    pprint(data)

    print '}'