98 lines
3.4 KiB
Python
98 lines
3.4 KiB
Python
import logging
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from os import getcwd, listdir
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from os.path import exists, splitext, isfile, join, relpath, isdir
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import hashlib
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from .md2html import compile_html
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log = logging.getLogger(__name__)
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logging.basicConfig(level=logging.INFO)
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cwd = getcwd()
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def is_markdown(filepath):
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_, ext = splitext(filepath)
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return ext == ".md"
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cache = dict()
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def file_hash(filepath, bufsize=4096):
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if bufsize <= 0:
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raise ValueError("Buffer size must be greater than 0")
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md5 = hashlib.md5()
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with open(filepath, 'rb') as f:
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while True:
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buf = f.read(bufsize)
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if len(buf) == 0:
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break
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md5.update(buf)
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return md5.digest()
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def application(env, start_response):
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path = join(cwd, relpath(env['PATH_INFO'], '/'))
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if exists(path):
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if isfile(path) and is_markdown(path):
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if path not in cache:
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digest = file_hash(path).hex()
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cache[path] = digest
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else:
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digest = cache[path]
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def parse_etag(etag):
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if etag is None:
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return
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start = etag.find('"')
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if start < 0:
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return
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end = etag.find('"', start + 1)
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return etag[start + 1: end]
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etag = parse_etag(env.get('HTTP_IF_NONE_MATCH'))
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if etag and etag == digest:
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start_response('301 Not Modified', [
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('Content-Type', 'text/html'),
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('Content-Length', str(0)),
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('Cache-Control', 'no-cache, must-revalidate, max-age=86400'),
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('Connection', 'keep-alive')
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])
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return []
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else:
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body = compile_html(path, ['extra', 'smarty', 'tables']).encode()
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start_response('200 OK', [('Content-Type', 'text/html'),
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('Content-Length', str(len(body))),
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('Etag', '"%s"' % digest),
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('Cache-Control', 'no-cache, must-revalidate, max-age=86400'),
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('Connection', 'keep-alive'),
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])
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return [body]
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elif isdir(path):
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body = directory_listing(env['PATH_INFO'], path).encode()
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start_response('200 OK', [
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('Content-Type', 'text/html'), ('Content-Length', str(len(body))), ('Connection', 'keep-alive'),
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])
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return [body]
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start_response('404 NOT_FOUND', [('Content-Length', str(0)), ('Connection', 'keep-alive')])
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return []
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def directory_listing(path_info, path):
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title = "Directory listing for %s" % path_info
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result = "<!DOCTYPE html><html><head>"
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result += "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">"
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result += "<title>" + title + "</title></head>"
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result += "<body><h1>" + title + "</h1><hr>"
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result += "<ul>"
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if path_info != '/':
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result += "<li><a href=\"../\"/>../</li>"
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def ls(filter):
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return (entry for entry in sorted(listdir(path)) if filter(join(path, entry)))
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for entry in ls(isdir):
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result += '<li><a href="' + entry + '/' + '"/>' + entry + '/' + '</li>'
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for entry in ls(lambda entry: isfile(entry) and is_markdown(entry)):
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result += '<li><a href="' + entry + '"/>' + entry + '</li>'
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return result
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