virt-manager/virtinst/uri.py
2014-12-09 10:15:53 -05:00

106 lines
3.3 KiB
Python

#
# Copyright 2014 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA.
#
import re
class URISplit(object):
"""
Parse an arbitrary URI into its individual parts
"""
def __init__(self, uri):
self.uri = uri
(self.scheme, self.username, self.hostname,
self.path, self.query, self.fragment) = self._split(self.uri)
self.transport = ''
if "+" in self.scheme:
self.scheme, self.transport = self.scheme.rsplit("+", 1)
self.port = ''
self.is_ipv6 = False
if self.hostname.startswith("[") and "]" in self.hostname:
if "]:" in self.hostname:
self.hostname, self.port = self.hostname.rsplit(":", 1)
self.hostname = "".join(self.hostname[1:].split("]", 1))
self.is_ipv6 = True
elif ":" in self.hostname:
self.hostname, self.port = self.hostname.split(":", 1)
self.host_is_ipv4_string = bool(re.match("^[0-9.]+$", self.hostname))
###################
# Private helpers #
###################
def _split(self, uri):
def splitnetloc(url, start=0):
for c in '/?#': # the order is important!
delim = url.find(c, start)
if delim >= 0:
break
else:
delim = len(url)
return url[start:delim], url[delim:]
scheme = username = netloc = query = fragment = ''
i = uri.find(":")
if i > 0:
scheme, uri = uri[:i].lower(), uri[i + 1:]
if uri[:2] == '//':
netloc, uri = splitnetloc(uri, 2)
offset = netloc.find("@")
if offset > 0:
username = netloc[0:offset]
netloc = netloc[offset + 1:]
if '#' in uri:
uri, fragment = uri.split('#', 1)
if '?' in uri:
uri, query = uri.split('?', 1)
return scheme, username, netloc, uri, query, fragment
##############
# Public API #
##############
def rebuild_uri(self):
ret = self.scheme
if self.transport:
ret += "+" + self.transport
ret += "://"
if self.username:
ret += self.username + "@"
if self.hostname:
host = self.hostname
if self.is_ipv6:
host = "[%s]" % self.hostname
ret += host
if self.port:
ret += ":" + self.port
if self.path:
ret += self.path
if self.query:
ret += "?" + self.query
if self.fragment:
ret += "#" + self.fragment
return ret