""" 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 """ 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.", ".") return _load_template_source(t, template_dirs) return _load_template_source(template_name, template_dirs) load_template_source.is_usable = True