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from django.core.exceptions import MiddlewareNotUsed
from django.utils.deprecation import MiddlewareMixin
from django.utils.encoding import DjangoUnicodeDecodeError
from django.utils.html import strip_spaces_between_tags as minify_html
from pipeline.conf import settings
class MinifyHTMLMiddleware(MiddlewareMixin):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
if not settings.PIPELINE_ENABLED:
raise MiddlewareNotUsed
def process_response(self, request, response):
if (
response.has_header("Content-Type")
and "text/html" in response["Content-Type"]
):
try:
response.content = minify_html(response.content.decode("utf-8").strip())
response["Content-Length"] = str(len(response.content))
except DjangoUnicodeDecodeError:
pass
return response
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