setup: build, ship and install .po and .mo files

MANIFEST.in

@@ -1,5 +1,6 @@
 recursive-include lingo/static *.css *.png
 recursive-include lingo/templates *.html *.txt
+recursive-include lingo/locale *.po *.mo
 include MANIFEST.in
 include COPYING
 include README

setup.py

@@ -6,7 +6,10 @@ import os
 import re
 import subprocess
 
+from setuptools.command.install_lib import install_lib as _install_lib
+from distutils.command.build import build as _build
 from distutils.command.sdist import sdist
+from distutils.cmd import Command
 from setuptools import setup, find_packages
 
 class eo_sdist(sdist):
@@ -37,6 +40,40 @@ def get_version():
     return '0'
 
 
+class compile_translations(Command):
+    description = 'compile message catalogs to MO files via django compilemessages'
+    user_options = []
+
+    def initialize_options(self):
+        pass
+
+    def finalize_options(self):
+        pass
+
+    def run(self):
+        try:
+            from django.core.management import call_command
+            for path, dirs, files in os.walk('lingo'):
+                if 'locale' not in dirs:
+                    continue
+                curdir = os.getcwd()
+                os.chdir(os.path.realpath(path))
+                call_command('compilemessages')
+                os.chdir(curdir)
+        except ImportError:
+            sys.stderr.write('!!! Please install Django >= 1.4 to build translations\n')
+
+
+class build(_build):
+    sub_commands = [('compile_translations', None)] + _build.sub_commands
+
+
+class install_lib(_install_lib):
+    def run(self):
+        self.run_command('compile_translations')
+        _install_lib.run(self)
+
+
 setup(
     name='lingo',
     version=get_version(),
@@ -63,5 +100,11 @@ setup(
     zip_safe=False,
     entry_points={
         'combo.plugin': ['lingo = lingo:Plugin'],
+    },
+    cmdclass={
+        'build': build,
+        'compile_translations': compile_translations,
+        'install_lib': install_lib,
+        'sdist': eo_sdist,
     }
 )