59 lines
2.3 KiB
Python
59 lines
2.3 KiB
Python
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"""
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Wrapper for loading templates from the filesystem.
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"""
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from django.conf import settings
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from django.template import TemplateDoesNotExist
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from django.utils._os import safe_join
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from django.utils import translation
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def get_template_sources(template_name, template_dirs=None):
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"""
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Returns the absolute paths to "template_name", when appended to each
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directory in "template_dirs". Any paths that don't lie inside one of the
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template dirs are excluded from the result set, for security reasons.
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"""
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if not template_dirs:
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template_dirs = settings.TEMPLATE_DIRS
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for template_dir in template_dirs:
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try:
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yield safe_join(template_dir, template_name)
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except UnicodeDecodeError:
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# The template dir name was a bytestring that wasn't valid UTF-8.
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raise
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except ValueError:
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# The joined path was located outside of this particular
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# template_dir (it might be inside another one, so this isn't
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# fatal).
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pass
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def _load_template_source(template_name, template_dirs=None):
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tried = []
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for filepath in get_template_sources(template_name, template_dirs):
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try:
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return (open(filepath).read().decode(settings.FILE_CHARSET), filepath)
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except IOError:
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tried.append(filepath)
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if tried:
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error_msg = "Tried %s" % tried
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else:
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error_msg = "Your TEMPLATE_DIRS setting is empty. Change it to point to at least one template directory."
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raise TemplateDoesNotExist, error_msg
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def load_template_source(template_name, template_dirs=None):
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"""Assuming the current language is German.
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If template_name is index.$LANG.html, try index.de.html then index.html
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Also replaces .. with . when attempting fallback.
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"""
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if "$LANG" in template_name:
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lang = translation.get_language()
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try:
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t = template_name.replace("$LANG", lang)
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res = _load_template_source(t, template_dirs)
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return res
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except TemplateDoesNotExist:
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t = template_name.replace("$LANG", "").replace("..",".")
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return _load_template_source(t, template_dirs)
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return _load_template_source(template_name, template_dirs)
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load_template_source.is_usable = True
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