extras/build_mo.py

   1 """build_mo command for setup.py"""
   2
   3 from __future__ import absolute_import, division, unicode_literals
   4
   5 from distutils import log
   6 from distutils.command.build import build
   7 from distutils.core import Command
   8 from distutils.dep_util import newer
   9 from distutils.spawn import find_executable
  10 import os
  11 import re
  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 = [(str('build-dir='), str('d'),
  24                         'Directory to build locale files'),
  25                     (str('output-base='), str('o'),
  26                         'mo-files base name'),
  27                     (str('source-dir='), None,
  28                         'Directory with sources po files'),
  29                     (str('force'), str('f'),
  30                         'Force creation of mo files'),
  31                     (str('lang='), None,
  32                         'Comma-separated list of languages to process')]
  33
  34     boolean_options = ['force']
  35
  36     def initialize_options(self):
  37         self.build_dir = None
  38         self.output_base = None
  39         self.source_dir = None
  40         self.force = None
  41         self.lang = None
  42
  43     def finalize_options(self):
  44         self.set_undefined_options('build', ('force', 'force'))
  45         self.prj_name = self.distribution.get_name()
  46         if self.build_dir is None:
  47             self.build_dir = os.path.join('share', 'locale')
  48         if not self.output_base:
  49             self.output_base = self.prj_name or 'messages'
  50         if self.source_dir is None:
  51             self.source_dir = 'po'
  52         if self.lang is None:
  53             if self.prj_name:
  54                 re_po = re.compile(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(['msginit',
  87                     '--no-translator',
  88                     '-l', 'en',
  89                     '-i', os.path.join(self.source_dir, pot),
  90                     '-o', os.path.join(self.source_dir, en_po),
  91                     ])
  92
  93         basename = self.output_base
  94         if not basename.endswith('.mo'):
  95             basename += '.mo'
  96
  97         po_prefix = ''
  98         if self.prj_name:
  99             po_prefix = self.prj_name + '-'
 100         for lang in self.lang:
 101             po = os.path.join(self.source_dir, lang + '.po')
 102             if not os.path.isfile(po):
 103                 po = os.path.join(self.source_dir, po_prefix + lang + '.po')
 104             dir_ = os.path.join(self.build_dir, lang, 'LC_MESSAGES')
 105             self.mkpath(dir_)
 106             mo = os.path.join(dir_, basename)
 107             if self.force or newer(po, mo):
 108                 log.info('Compile: %s -> %s' % (po, mo))
 109                 self.spawn(['msgfmt', '-o', mo, po])
 110
 111
 112 build.sub_commands.insert(0, ('build_mo', None))