adds a 'strftime' jinja fiter that uses LOCALE

pelican/generators.py

@@ -23,7 +23,7 @@ from pelican.contents import (
         Article, Page, Category, Static, is_valid_content
 )
 from pelican.readers import read_file
-from pelican.utils import copy, process_translations, mkdir_p
+from pelican.utils import copy, process_translations, mkdir_p, DateFormatter
 from pelican import signals
 import pelican.utils
 
@@ -65,6 +65,9 @@ class Generator(object):
 
         logger.debug('template list: {0}'.format(self.env.list_templates()))
 
+        # provide utils.strftime as a jinja filter
+        self.env.filters.update({'strftime': DateFormatter()})
+
         # get custom Jinja filters from user settings
         custom_filters = self.settings.get('JINJA_FILTERS', {})
         self.env.filters.update(custom_filters)

pelican/utils.py

@@ -65,6 +65,26 @@ def strftime(date, date_format):
     return template % tuple(formatted_candidates)
 
 
+class DateFormatter(object):
+    '''A date formatter object used as a jinja filter
+    
+    Uses the `strftime` implementation and makes sure jinja uses the locale 
+    defined in LOCALE setting
+    '''
+    
+    def __init__(self):
+        self.locale = locale.setlocale(locale.LC_TIME)
+
+    def __call__(self, date, date_format):
+        old_locale = locale.setlocale(locale.LC_TIME)
+        locale.setlocale(locale.LC_TIME, self.locale)
+
+        formatted = strftime(date, date_format)
+
+        locale.setlocale(locale.LC_TIME, old_locale)
+        return formatted
+
+
 def python_2_unicode_compatible(klass):
     """
     A decorator that defines __unicode__ and __str__ methods under Python 2.