#!/usr/bin/env python
# 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
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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"""
Converts among language names and abbreviations using Python's ISO-639 module.
https://pypi.python.org/pypi/iso-639/0.4.3

You need to install the iso-639 module:

    pip install [--user] iso-639

Here is some example usage of that module:

    > from iso639 import languages as l
    > greek = l.get(part1 = 'el')
    > pprint(vars(greek))
    {'inverted': 'Greek, Modern (1453-)',
     'macro': '',
     'name': 'Modern Greek (1453-)',
     'names': [],
     'part1': 'el',
     'part2b': 'gre',
     'part2t': 'ell',
     'part3': 'ell',
     'part5': ''}
"""

import sys
import iso639

if len(sys.argv) != 2:
   print "Usage: iso639 LANG"
   print "where LANG is a language name or abbreviation."
   sys.exit(1)

input = sys.argv[1]

if len(input) == 2:
   lang = iso639.languages.get(part1 = input)
   print lang.name
elif len(input) == 3:
   lang = iso639.languages.get(part3 = input)
   print lang.name
else:
   lang = iso639.languages.get(name = input)
   print lang.part1