59 lines
2.3 KiB
Python
59 lines
2.3 KiB
Python
"""
|
|
Wrapper for loading templates from the filesystem.
|
|
"""
|
|
|
|
from django.conf import settings
|
|
from django.template import TemplateDoesNotExist
|
|
from django.utils._os import safe_join
|
|
from django.utils import translation
|
|
|
|
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 = settings.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 this particular
|
|
# template_dir (it might be inside another one, so this isn't
|
|
# fatal).
|
|
pass
|
|
|
|
def _load_template_source(template_name, template_dirs=None):
|
|
tried = []
|
|
for filepath in get_template_sources(template_name, template_dirs):
|
|
try:
|
|
return (open(filepath).read().decode(settings.FILE_CHARSET), filepath)
|
|
except IOError:
|
|
tried.append(filepath)
|
|
if tried:
|
|
error_msg = "Tried %s" % tried
|
|
else:
|
|
error_msg = "Your TEMPLATE_DIRS setting is empty. Change it to point to at least one template directory."
|
|
raise TemplateDoesNotExist, error_msg
|
|
|
|
def load_template_source(template_name, template_dirs=None):
|
|
"""Assuming the current language is German.
|
|
If template_name is index.$LANG.html, try index.de.html then index.html
|
|
Also replaces .. with . when attempting fallback.
|
|
"""
|
|
if "$LANG" in template_name:
|
|
lang = translation.get_language()
|
|
try:
|
|
t = template_name.replace("$LANG", lang)
|
|
res = _load_template_source(t, template_dirs)
|
|
return res
|
|
except TemplateDoesNotExist:
|
|
t = template_name.replace("$LANG", "").replace("..",".")
|
|
return _load_template_source(t, template_dirs)
|
|
return _load_template_source(template_name, template_dirs)
|
|
load_template_source.is_usable = True
|