burrow/parser.py

64 lines
1.8 KiB
Python

import re
# Handles parsing gopher data:
# URLs, Menus
class parser:
def __init__(self):
self.host = None
self.resource = None
self.filetype = None
self.protocol = None
self.port = None
self.menu = None
def parse_url(self, url):
# Take in a URL and output a dict of the url parts
if url == 'home':
return False
regex = r'^(?P<protocol>(?:(gopher|http):\/\/)?)?(?P<host>[\w\-\.\d]+)(?P<port>(?::\d+)?)?(?P<type>(?:\/[01345679gIhisp])?)?(?P<resource>(?:\/.*)?)?$'
match = re.match(regex, url)
if not match:
return False
try:
protocol = match.group('protocol')
itemtype = match.group('type')
host = match.group('host')
port = match.group('port')
resource = match.group('resource')
except:
return False
if not resource:
resource = '/'
if not itemtype:
itemtype = '1'
self.filetype = itemtype[len(itemtype) - 1] if itemtype else '1'
self.protocol = protocol if protocol else 'gopher://'
self.port = int(port[1:]) if port else 70
self.host = host
self.resource = resource
return {'host': self.host, 'resource': self.resource, 'type': self.filetype, 'protocol': self.protocol, 'port': self.port}
def parse_menu(self, text):
# Take in text from connection and output a list
# w/ objects representing each menu item
message_list = text.split('\n')
message_list = [x.split('\t') for x in message_list]
message_list = [{'type': x[0][0], 'description': x[0][1:], 'resource': x[1], 'host': x[2], 'port': x[3]} for x in message_list if len(x) >= 4]
self.menu = message_list
return message_list