75 lines
2.3 KiB
Python
75 lines
2.3 KiB
Python
# Wrapper for loading templates from eggs via pkg_resources.resource_string.
|
|
from __future__ import unicode_literals
|
|
|
|
import warnings
|
|
|
|
from django.apps import apps
|
|
from django.template import Origin, TemplateDoesNotExist
|
|
from django.utils import six
|
|
from django.utils.deprecation import RemovedInDjango20Warning
|
|
|
|
from .base import Loader as BaseLoader
|
|
|
|
try:
|
|
from pkg_resources import resource_string
|
|
except ImportError:
|
|
resource_string = None
|
|
|
|
warnings.warn('The egg template loader is deprecated.', RemovedInDjango20Warning)
|
|
|
|
|
|
class EggOrigin(Origin):
|
|
|
|
def __init__(self, app_name, pkg_name, *args, **kwargs):
|
|
self.app_name = app_name
|
|
self.pkg_name = pkg_name
|
|
super(EggOrigin, self).__init__(*args, **kwargs)
|
|
|
|
|
|
class Loader(BaseLoader):
|
|
|
|
def __init__(self, engine):
|
|
if resource_string is None:
|
|
raise RuntimeError("Setuptools must be installed to use the egg loader")
|
|
super(Loader, self).__init__(engine)
|
|
|
|
def get_contents(self, origin):
|
|
try:
|
|
source = resource_string(origin.app_name, origin.pkg_name)
|
|
except:
|
|
raise TemplateDoesNotExist(origin)
|
|
|
|
if six.PY2:
|
|
source = source.decode(self.engine.file_charset)
|
|
|
|
return source
|
|
|
|
def get_template_sources(self, template_name):
|
|
pkg_name = 'templates/' + template_name
|
|
for app_config in apps.get_app_configs():
|
|
yield EggOrigin(
|
|
app_name=app_config.name,
|
|
pkg_name=pkg_name,
|
|
name="egg:%s:%s" % (app_config.name, pkg_name),
|
|
template_name=template_name,
|
|
loader=self,
|
|
)
|
|
|
|
def load_template_source(self, template_name, template_dirs=None):
|
|
"""
|
|
Loads templates from Python eggs via pkg_resource.resource_string.
|
|
|
|
For every installed app, it tries to get the resource (app, template_name).
|
|
"""
|
|
warnings.warn(
|
|
'The load_template_sources() method is deprecated. Use '
|
|
'get_template() or get_contents() instead.',
|
|
RemovedInDjango20Warning,
|
|
)
|
|
for origin in self.get_template_sources(template_name):
|
|
try:
|
|
return self.get_contents(origin), origin.name
|
|
except TemplateDoesNotExist:
|
|
pass
|
|
raise TemplateDoesNotExist(template_name)
|