lettering features (#399)

lettering features

1 files changed, 26 insertions, 2 deletions

diff --git a/lib/i18n.py b/lib/i18n.py
index 98f63ec1..f57bbf9c 100644
--- a/lib/i18n.py
+++ b/lib/i18n.py
@@ -1,7 +1,9 @@
-import sys
+import gettext
 import os
 from os.path import dirname, realpath
-import gettext
+import sys
+
+from .utils import cache
 
 _ = translation = None
 locale_dir = None
@@ -33,5 +35,27 @@ def localize(languages=None):
     _ = translation.ugettext
 
 
+@cache
+def get_languages():
+    """return a list of languages configured by the user
+
+    I really wish gettext provided this as a function.  Instead, we've duplicated
+    its code below.
+    """
+
+    languages = []
+
+    for envar in ('LANGUAGE', 'LC_ALL', 'LC_MESSAGES', 'LANG'):
+        val = os.environ.get(envar)
+        if val:
+            languages = val.split(':')
+            break
+
+    if 'C' not in languages:
+        languages.append('C')
+
+    return languages
+
+
 _set_locale_dir()
 localize()