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#!/usr/bin/env python3
"""Render cgit source blobs as syntax-highlighted, HTML-escaped markup."""
import io
import sys
from pygments import highlight
from pygments.formatters import HtmlFormatter
from pygments.lexers import TextLexer, guess_lexer, guess_lexer_for_filename
from pygments.util import ClassNotFound
sys.stdin = io.TextIOWrapper(sys.stdin.buffer, encoding="utf-8", errors="replace")
sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding="utf-8", errors="replace")
source = sys.stdin.read()
filename = sys.argv[1]
formatter = HtmlFormatter(style="monokai", nobackground=True)
try:
lexer = guess_lexer_for_filename(filename, source)
except (ClassNotFound, TypeError):
if source.startswith("#!"):
try:
lexer = guess_lexer(source)
except ClassNotFound:
lexer = TextLexer()
else:
lexer = TextLexer()
sys.stdout.write("<style>")
sys.stdout.write(formatter.get_style_defs(".highlight"))
sys.stdout.write("</style>")
sys.stdout.write(highlight(source, lexer, formatter))
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