#!/usr/bin/env python3
import markdown
import sys
import io
from pygments.formatters import HtmlFormatter
from markdown.extensions.toc import TocExtension
sys.stdin = io.TextIOWrapper(sys.stdin.buffer, encoding='utf-8')
sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')
sys.stdout.write('''
''')
# Render to a string (not straight to stdout) so we can post-process it.
# Note: you may want to run this through bleach for sanitization
html = markdown.markdown(
sys.stdin.read(),
output_format="html5",
extensions=[
"markdown.extensions.fenced_code",
"markdown.extensions.codehilite",
"markdown.extensions.tables",
"markdown.extensions.sane_lists",
TocExtension(anchorlink=True)],
extension_configs={
"markdown.extensions.codehilite":{"css_class":"highlight"}})
# A README's relative image paths (e.g. screenshots/x.png) are repo blobs, which
# cgit only serves via its `plain` command; but a browser resolves a relative
# against the about-page URL (//about/), so the image 404s.
# Rewrite relative to an absolute //plain/?h= URL
# (absolute so it also works where cgit renders the readme on the summary page).
# cgit exports the repo context to about-filters via these environment vars; if
# they're absent we leave the src untouched.
import os, re
repo = os.environ.get("CGIT_REPO_URL", "").strip("/")
if repo:
branch = os.environ.get("CGIT_REPO_DEFBRANCH", "").strip()
plain = "/" + repo + "/plain/"
query = ("?h=" + branch) if branch else ""
# leave absolute, protocol-relative, root-relative, anchor and data: URLs alone
skip = re.compile(r"^(?:[a-z][a-z0-9+.\-]*:|//|/|#)", re.I)
def rewrite(m):
url = m.group(2)
if not url or skip.match(url):
return m.group(0)
return m.group(1) + plain + re.sub(r"^\./", "", url) + query + m.group(3)
html = re.sub(r'(]*?\bsrc=")([^"]*)(")', rewrite, html, flags=re.I)
sys.stdout.write("