File indexing completed on 2026-11-09 10:47:39
0001 """Browser-tab identity for local and proxied devcloud HTML pages."""
0002 import re
0003
0004
0005 FAVICON_LINKS = (
0006 b'<link rel="icon" type="image/svg+xml" href="/favicon.svg?v=epic-red-e-1">\n'
0007 b'<link rel="alternate icon" href="/favicon.ico?v=epic-red-e-1">\n'
0008 )
0009 HEAD_END = re.compile(rb'</head\s*>', re.IGNORECASE)
0010
0011
0012 class DevcloudBrandingMiddleware:
0013 """Give locally rendered and tunnel-proxied pages the same favicon."""
0014
0015 def __init__(self, get_response):
0016 self.get_response = get_response
0017
0018 def __call__(self, request):
0019 response = self.get_response(request)
0020 if (response.streaming or
0021 not response.get('Content-Type', '').lower().startswith('text/html') or
0022 'attachment' in response.get('Content-Disposition', '').lower()):
0023 return response
0024 body = response.content
0025 if b'epic-red-e-1' not in body:
0026 body, changed = HEAD_END.subn(lambda m: FAVICON_LINKS + m.group(0), body, count=1)
0027 if changed:
0028 response.content = body
0029 if response.has_header('Content-Length'):
0030 response['Content-Length'] = str(len(body))
0031 return response
