extras/build_mo.py

   1 """build_mo command for setup.py"""
   2 # pylint: disable=attribute-defined-outside-init
   3 # pylint: disable=no-name-in-module,import-error
   4 from __future__ import absolute_import, division, unicode_literals
   5 import os
   6 import re
   7 from distutils.core import Command
   8 from distutils.dep_util import newer
   9 from distutils.spawn import find_executable
  10 from distutils import log
  11
  12 from . import build_util
  13
  14
  15 class build_mo(Command):
  16     """Subcommand of build command: build_mo"""
  17
  18     description = 'compile po files to mo files'
  19
  20     # List of options:
  21     #   - long name,
  22     #   - short name (None if no short name),
  23     #   - help string.
  24     user_options = [
  25         ('build-dir=', 'd', 'Directory to build locale files'),
  26         ('output-base=', 'o', 'mo-files base name'),
  27         ('source-dir=', None, 'Directory with sources po files'),
  28         ('force', 'f', 'Force creation of mo files'),
  29         ('lang=', None, 'Comma-separated list of languages to process'),
  30     ]
  31     user_options = build_util.stringify_options(user_options)
  32     boolean_options = build_util.stringify_list(['force'])
  33
  34     def initialize_options(self):
  35         self.build_dir = None
  36         self.output_base = None
  37         self.source_dir = None
  38         self.force = None
  39         self.lang = None
  40
  41     def finalize_options(self):
  42         self.set_undefined_options('build', ('force', 'force'))
  43         self.prj_name = self.distribution.get_name()
  44         if self.build_dir is None:
  45             self.build_dir = os.path.join('share', 'locale')
  46         if not self.output_base:
  47             self.output_base = self.prj_name or 'messages'
  48         if self.source_dir is None:
  49             self.source_dir = 'po'
  50         if self.lang is None:
  51             if self.prj_name:
  52                 re_po = re.compile(r'^(?:%s-)?([a-zA-Z_]+)\.po$' % self.prj_name)
  53             else:
  54                 re_po = re.compile(r'^([a-zA-Z_]+)\.po$')
  55             self.lang = []
  56             for i in os.listdir(self.source_dir):
  57                 mo = re_po.match(i)
  58                 if mo:
  59                     self.lang.append(mo.group(1))
  60         else:
  61             self.lang = [i.strip() for i in self.lang.split(',') if i.strip()]
  62
  63     def run(self):
  64         """Run msgfmt for each language"""
  65         if not self.lang:
  66             return
  67
  68         if find_executable('msgfmt') is None:
  69             log.warn('GNU gettext msgfmt utility not found!')
  70             log.warn('Skip compiling po files.')
  71             return
  72
  73         if 'en' in self.lang:
  74             if find_executable('msginit') is None:
  75                 log.warn('GNU gettext msginit utility not found!')
  76                 log.warn('Skip creating English PO file.')
  77             else:
  78                 log.info('Creating English PO file...')
  79                 pot = (self.prj_name or 'messages') + '.pot'
  80                 if self.prj_name:
  81                     en_po = '%s-en.po' % self.prj_name
  82                 else:
  83                     en_po = 'en.po'
  84                 self.spawn(
  85                     [
  86                         'msginit',
  87                         '--no-translator',
  88                         '--no-wrap',
  89                         '--locale',
  90                         'en',
  91                         '--input',
  92                         os.path.join(self.source_dir, pot),
  93                         '--output-file',
  94                         os.path.join(self.source_dir, en_po),
  95                     ]
  96                 )
  97
  98         basename = self.output_base
  99         if not basename.endswith('.mo'):
 100             basename += '.mo'
 101
 102         po_prefix = ''
 103         if self.prj_name:
 104             po_prefix = self.prj_name + '-'
 105         for lang in self.lang:
 106             po = os.path.join(self.source_dir, lang + '.po')
 107             if not os.path.isfile(po):
 108                 po = os.path.join(self.source_dir, po_prefix + lang + '.po')
 109             dir_ = os.path.join(self.build_dir, lang, 'LC_MESSAGES')
 110             self.mkpath(dir_)
 111             mo = os.path.join(dir_, basename)
 112             if self.force or newer(po, mo):
 113                 log.info('Compile: %s -> %s' % (po, mo))
 114                 self.spawn(['msgfmt', '--output-file', mo, po])