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"""
Wrapper for loading templates from the filesystem.
"""
import errno
import io
from django.core.exceptions import SuspiciousFileOperation
from django.template.base import TemplateDoesNotExist
from django.utils._os import safe_join
from .base import Loader as BaseLoader
class Loader(BaseLoader):
def get_dirs(self):
return self.engine.dirs
def get_template_sources(self, 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 = self.get_dirs()
for template_dir in template_dirs:
try:
yield safe_join(template_dir, template_name)
except SuspiciousFileOperation:
# The joined path was located outside of this template_dir
# (it might be inside another one, so this isn't fatal).
pass
def load_template_source(self, template_name, template_dirs=None):
for filepath in self.get_template_sources(template_name, template_dirs):
try:
with io.open(filepath, encoding=self.engine.file_charset) as fp:
return fp.read(), filepath
except IOError as e:
if e.errno != errno.ENOENT:
raise
raise TemplateDoesNotExist(template_name)
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