--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/django/template/loaders/app_directories.py	Wed Jan 20 00:34:04 2010 +0100
@@ -0,0 +1,55 @@
+"""
+Wrapper for loading templates from "templates" directories in INSTALLED_APPS
+packages.
+"""
+
+import os
+import sys
+
+from django.conf import settings
+from django.core.exceptions import ImproperlyConfigured
+from django.template import TemplateDoesNotExist
+from django.utils._os import safe_join
+from django.utils.importlib import import_module
+
+# At compile time, cache the directories to search.
+fs_encoding = sys.getfilesystemencoding() or sys.getdefaultencoding()
+app_template_dirs = []
+for app in settings.INSTALLED_APPS:
+    try:
+        mod = import_module(app)
+    except ImportError, e:
+        raise ImproperlyConfigured, 'ImportError %s: %s' % (app, e.args[0])
+    template_dir = os.path.join(os.path.dirname(mod.__file__), 'templates')
+    if os.path.isdir(template_dir):
+        app_template_dirs.append(template_dir.decode(fs_encoding))
+
+# It won't change, so convert it to a tuple to save memory.
+app_template_dirs = tuple(app_template_dirs)
+
+def get_template_sources(template_name, template_dirs=None):
+    """
+    Returns the absolute paths to "template_name", when appended to each
+    directory in "template_dirs". Any paths that don't lie inside one of the
+    template dirs are excluded from the result set, for security reasons.
+    """
+    if not template_dirs:
+        template_dirs = app_template_dirs
+    for template_dir in template_dirs:
+        try:
+            yield safe_join(template_dir, template_name)
+        except UnicodeDecodeError:
+            # The template dir name was a bytestring that wasn't valid UTF-8.
+            raise
+        except ValueError:
+            # The joined path was located outside of template_dir.
+            pass
+
+def load_template_source(template_name, template_dirs=None):
+    for filepath in get_template_sources(template_name, template_dirs):
+        try:
+            return (open(filepath).read().decode(settings.FILE_CHARSET), filepath)
+        except IOError:
+            pass
+    raise TemplateDoesNotExist, template_name
+load_template_source.is_usable = True