#!/usr/bin/python

# Gives the translation status of the specified apps and languages.
#
# Copyright 2013 Google Inc.
# http://blockly.googlecode.com/
#
# Licensed 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.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Extracts messages from .js file into .json files for translation.

Specifically, lines with the following formats are extracted:

    /// Here is a description of the following message.
    Blockly.SOME_KEY = 'Some value';

Adjacent "///" lines are concatenated.

There are two output files, each of which is proper JSON.  For each key, the
file en.json would get an entry of the form:

    "Blockly.SOME_KEY", "Some value",

The file qqq.json would get:

    "Blockly.SOME_KEY", "Here is a description of the following message.",

Commas would of course be omitted for the final entry of each value.

@author Ellen Spertus (ellen.spertus@gmail.com)
"""

import argparse
import re
import sys
from common import write_files


_INPUT_PATTERN = re.compile("""Blockly.(\w*)\s*=\s*['"]([^'"]*)['"]""")


def main():
  # Set up argument parser.
  parser = argparse.ArgumentParser(description='Create translation files.')
  parser.add_argument(
      '--author',
      default='Ellen Spertus <ellen.spertus@gmail.com>',
      help='name and email address of contact for translators')
  parser.add_argument('--lang', default='en',
                      help='ISO 639-1 source language code')
  parser.add_argument('--output_dir', default='.',
                      help='relative directory for output files')
  parser.add_argument('--input_file', default='_messages.js',
                      help='input file')
  args = parser.parse_args()

  # Read and parse input file.
  results = []
  description = ''
  file = open(args.input_file)
  for line in file:
    if line.startswith('///'):
      if description:
        description = description + ' ' + line[3:].strip()
      else:
        description = line[3:].strip()
    else:
      match = _INPUT_PATTERN.match(line)
      if match:
        result = {}
        result['meaning'] = match.group(1)
        result['source'] = match.group(2)
        if not description:
          print('Warning: No description for ' + result['meaning'])
        result['description'] = description
        description = ''
        results.append(result)
  file.close()

  # Create output files.
  write_files(args.author, args.lang, args.output_dir, results, False)


if __name__ == '__main__':
  main()