gist-it-reborn/server.py

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2021-08-29 17:54:18 +02:00
#!/usr/bin/env python
"""A meaningful docstring
"""
import argparse
import re
from http.server import HTTPServer, BaseHTTPRequestHandler
from urllib.parse import urlparse, parse_qs
import requests
from jinja2 import Template
from pygments import highlight
from pygments.formatters.html import HtmlFormatter
from pygments.lexers import guess_lexer_for_filename
def render_gist_js(code):
template = Template("document.write( '{{ code|tojson }}' );")
return template.render(code=code)
class HTTPRequestHandler(BaseHTTPRequestHandler):
def do_GET(self):
if self.path == "/":
self.send_response(200, "running")
elif re.search("https://github.com/.*/.*", self.path):
github_raw_url = self.path[1:].replace("https://github.com/", "https://raw.githubusercontent.com/").replace("/blob/", "/")
response = requests.get(url=github_raw_url)
code = response.content.decode('UTF-8')
parsed_url = urlparse(self.path)
params = parse_qs(parsed_url.query)
style = "default"
if 'style' in params:
style = params['style'][0]
if 'slice' in params:
slice_value = params['slice'][0].split(":")
from_ = int(slice_value[0])
to_ = int(slice_value[1])
lines = str(code).splitlines()
selected_lines = lines[from_:to_]
code = "\n".join(selected_lines)
filename = parsed_url.path.split('/')[-1:][0]
lexer = guess_lexer_for_filename(filename, response.content)
formatter = HtmlFormatter(linenos=False, cssclass="gist-it-highlight", style=style)
highlighted_code = highlight(code, lexer, formatter)
css = formatter.get_style_defs('.gist-it-highlight')
result = highlighted_code + f"<style> {css}</style>"
js_rendered = render_gist_js(result)
self.send_response(200)
self.send_header('Content-Type', 'text/html')
self.end_headers()
self.wfile.write(js_rendered.encode('utf8'))
else:
self.send_response(404)
self.end_headers()
def main():
parser = argparse.ArgumentParser(description='HTTP Server')
args = parser.parse_args()
server = HTTPServer(("localhost", 4876), HTTPRequestHandler)
print('HTTP Server Running...........')
server.serve_forever()
if __name__ == '__main__':
main()