extras/build_mo.py

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