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.command.build import build
   8 from distutils.core import Command
   9 from distutils.dep_util import newer
  10 from distutils.spawn import find_executable
  11 from distutils import log
  12
  13 from . import build_util
  14
  15
  16 class build_mo(Command):
  17     """Subcommand of build command: build_mo"""
  18
  19     description = 'compile po files to mo files'
  20
  21     # List of options:
  22     #   - long name,
  23     #   - short name (None if no short name),
  24     #   - help string.
  25     user_options = [
  26         ('build-dir=', 'd', 'Directory to build locale files'),
  27         ('output-base=', 'o', 'mo-files base name'),
  28         ('source-dir=', None, 'Directory with sources po files'),
  29         ('force', 'f', 'Force creation of mo files'),
  30         ('lang=', None, 'Comma-separated list of languages to process'),
  31     ]
  32     user_options = build_util.stringify_options(user_options)
  33     boolean_options = build_util.stringify_list(['force'])
  34
  35     def initialize_options(self):
  36         self.build_dir = None
  37         self.output_base = None
  38         self.source_dir = None
  39         self.force = None
  40         self.lang = None
  41
  42     def finalize_options(self):
  43         self.set_undefined_options('build', ('force', 'force'))
  44         self.prj_name = self.distribution.get_name()
  45         if self.build_dir is None:
  46             self.build_dir = os.path.join('share', 'locale')
  47         if not self.output_base:
  48             self.output_base = self.prj_name or 'messages'
  49         if self.source_dir is None:
  50             self.source_dir = 'po'
  51         if self.lang is None:
  52             if self.prj_name:
  53                 re_po = re.compile(
  54                     r'^(?:%s-)?([a-zA-Z_]+)\.po$' % self.prj_name)
  55             else:
  56                 re_po = re.compile(r'^([a-zA-Z_]+)\.po$')
  57             self.lang = []
  58             for i in os.listdir(self.source_dir):
  59                 mo = re_po.match(i)
  60                 if mo:
  61                     self.lang.append(mo.group(1))
  62         else:
  63             self.lang = [i.strip() for i in self.lang.split(',') if i.strip()]
  64
  65     def run(self):
  66         """Run msgfmt for each language"""
  67         if not self.lang:
  68             return
  69
  70         if find_executable('msgfmt') is None:
  71             log.warn('GNU gettext msgfmt utility not found!')
  72             log.warn('Skip compiling po files.')
  73             return
  74
  75         if 'en' in self.lang:
  76             if find_executable('msginit') is None:
  77                 log.warn('GNU gettext msginit utility not found!')
  78                 log.warn('Skip creating English PO file.')
  79             else:
  80                 log.info('Creating English PO file...')
  81                 pot = (self.prj_name or 'messages') + '.pot'
  82                 if self.prj_name:
  83                     en_po = '%s-en.po' % self.prj_name
  84                 else:
  85                     en_po = 'en.po'
  86                 self.spawn([
  87                     'msginit',
  88                     '--no-translator',
  89                     '--no-wrap',
  90                     '--locale', 'en',
  91                     '--input', os.path.join(self.source_dir, pot),
  92                     '--output-file', os.path.join(self.source_dir, en_po),
  93                     ])
  94
  95         basename = self.output_base
  96         if not basename.endswith('.mo'):
  97             basename += '.mo'
  98
  99         po_prefix = ''
 100         if self.prj_name:
 101             po_prefix = self.prj_name + '-'
 102         for lang in self.lang:
 103             po = os.path.join(self.source_dir, lang + '.po')
 104             if not os.path.isfile(po):
 105                 po = os.path.join(self.source_dir, po_prefix + lang + '.po')
 106             dir_ = os.path.join(self.build_dir, lang, 'LC_MESSAGES')
 107             self.mkpath(dir_)
 108             mo = os.path.join(dir_, basename)
 109             if self.force or newer(po, mo):
 110                 log.info('Compile: %s -> %s' % (po, mo))
 111                 self.spawn(['msgfmt', '--output-file', mo, po])
 112
 113
 114 build.sub_commands.insert(0, ('build_mo', None))