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54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
5 years ago
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import string
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from django.conf import settings
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from django.core.exceptions import ImproperlyConfigured
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from django.template import Origin, TemplateDoesNotExist
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from django.utils.html import conditional_escape
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from .base import BaseEngine
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from .utils import csrf_input_lazy, csrf_token_lazy
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class TemplateStrings(BaseEngine):
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app_dirname = 'template_strings'
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def __init__(self, params):
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params = params.copy()
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options = params.pop('OPTIONS').copy()
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if options:
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raise ImproperlyConfigured(
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"Unknown options: {}".format(", ".join(options)))
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super().__init__(params)
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def from_string(self, template_code):
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return Template(template_code)
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def get_template(self, template_name):
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tried = []
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for template_file in self.iter_template_filenames(template_name):
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try:
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with open(template_file, encoding=settings.FILE_CHARSET) as fp:
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template_code = fp.read()
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except FileNotFoundError:
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tried.append((
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Origin(template_file, template_name, self),
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'Source does not exist',
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))
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else:
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return Template(template_code)
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raise TemplateDoesNotExist(template_name, tried=tried, backend=self)
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class Template(string.Template):
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def render(self, context=None, request=None):
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if context is None:
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context = {}
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else:
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context = {k: conditional_escape(v) for k, v in context.items()}
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if request is not None:
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context['csrf_input'] = csrf_input_lazy(request)
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context['csrf_token'] = csrf_token_lazy(request)
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return self.safe_substitute(context)
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