117
121
join('http://foo', 'bar') => 'http://foo/bar'
118
122
join('http://foo', 'bar', '../baz') => 'http://foo/baz'
120
m = _url_scheme_re.match(base)
123
scheme = m.group('scheme')
124
path = m.group('path').split('/')
125
if path[-1:] == ['']:
126
# Strip off a trailing slash
127
# This helps both when we are at the root, and when
128
# 'base' has an extra slash at the end
126
scheme_end, path_start = _find_scheme_and_separator(base)
127
if scheme_end is None and path_start is None:
129
elif path_start is None:
130
path_start = len(base)
131
path = base[path_start:]
133
arg_scheme_end, arg_path_start = _find_scheme_and_separator(arg)
134
if arg_scheme_end is None and arg_path_start is None:
136
elif arg_path_start is None:
137
arg_path_start = len(arg)
138
if arg_scheme_end is not None:
140
path = arg[arg_path_start:]
141
scheme_end = arg_scheme_end
142
path_start = arg_path_start
144
path = joinpath(path, arg)
145
return base[:path_start] + path
148
def joinpath(base, *args):
149
"""Join URL path segments to a URL path segment.
151
This is somewhat like osutils.joinpath, but intended for URLs.
153
XXX: this duplicates some normalisation logic, and also duplicates a lot of
154
path handling logic that already exists in some Transport implementations.
155
We really should try to have exactly one place in the code base responsible
156
for combining paths of URLs.
158
path = base.split('/')
159
if len(path) > 1 and path[-1] == '':
160
#If the path ends in a trailing /, remove it.
163
if arg.startswith('/'):
165
for chunk in arg.split('/'):
170
raise errors.InvalidURLJoin('Cannot go above root',
131
path = base.split('/')
134
m = _url_scheme_re.match(arg)
137
scheme = m.group('scheme')
138
# this skips .. normalisation, making http://host/../../..
140
path = m.group('path').split('/')
142
for chunk in arg.split('/'):
147
# Don't pop off the host portion
150
raise errors.InvalidURLJoin('Cannot go above root',
156
178
return '/'.join(path)
157
return scheme + '://' + '/'.join(path)
160
181
# jam 20060502 Sorted to 'l' because the final target is 'local_path_from_url'
161
182
def _posix_local_path_from_url(url):
162
183
"""Convert a url like file:///path/to/foo into /path/to/foo"""
163
if not url.startswith('file:///'):
164
raise errors.InvalidURL(url, 'local urls must start with file:///')
184
url = split_segment_parameters_raw(url)[0]
185
file_localhost_prefix = 'file://localhost/'
186
if url.startswith(file_localhost_prefix):
187
path = url[len(file_localhost_prefix) - 1:]
188
elif not url.startswith('file:///'):
189
raise errors.InvalidURL(
190
url, 'local urls must start with file:/// or file://localhost/')
192
path = url[len('file://'):]
165
193
# We only strip off 2 slashes
166
return unescape(url[len('file://'):])
194
return unescape(path)
169
197
def _posix_local_path_to_url(path):
253
306
:param url: Either a hybrid URL or a local path
254
307
:return: A normalized URL which only includes 7-bit ASCII characters.
256
m = _url_scheme_re.match(url)
309
scheme_end, path_start = _find_scheme_and_separator(url)
310
if scheme_end is None:
258
311
return local_path_to_url(url)
312
prefix = url[:path_start]
313
path = url[path_start:]
259
314
if not isinstance(url, unicode):
261
316
if c not in _url_safe_characters:
262
317
raise errors.InvalidURL(url, 'URLs can only contain specific'
263
318
' safe characters (not %r)' % c)
319
path = _url_hex_escapes_re.sub(_unescape_safe_chars, path)
320
return str(prefix + ''.join(path))
265
322
# We have a unicode (hybrid) url
266
scheme = m.group('scheme')
267
path = list(m.group('path'))
323
path_chars = list(path)
269
for i in xrange(len(path)):
270
if path[i] not in _url_safe_characters:
271
chars = path[i].encode('utf-8')
272
path[i] = ''.join(['%%%02X' % ord(c) for c in path[i].encode('utf-8')])
273
return str(scheme + '://' + ''.join(path))
325
for i in xrange(len(path_chars)):
326
if path_chars[i] not in _url_safe_characters:
327
chars = path_chars[i].encode('utf-8')
328
path_chars[i] = ''.join(
329
['%%%02X' % ord(c) for c in path_chars[i].encode('utf-8')])
330
path = ''.join(path_chars)
331
path = _url_hex_escapes_re.sub(_unescape_safe_chars, path)
332
return str(prefix + path)
276
335
def relative_url(base, other):
372
436
return url_base + head, tail
439
def split_segment_parameters_raw(url):
440
"""Split the subsegment of the last segment of a URL.
442
:param url: A relative or absolute URL
443
:return: (url, subsegments)
445
(parent_url, child_dir) = split(url)
446
subsegments = child_dir.split(",")
447
if len(subsegments) == 1:
449
return (join(parent_url, subsegments[0]), subsegments[1:])
452
def split_segment_parameters(url):
453
"""Split the segment parameters of the last segment of a URL.
455
:param url: A relative or absolute URL
456
:return: (url, segment_parameters)
458
(base_url, subsegments) = split_segment_parameters_raw(url)
460
for subsegment in subsegments:
461
(key, value) = subsegment.split("=", 1)
462
parameters[key] = value
463
return (base_url, parameters)
466
def join_segment_parameters_raw(base, *subsegments):
467
"""Create a new URL by adding subsegments to an existing one.
469
This adds the specified subsegments to the last path in the specified
470
base URL. The subsegments should be bytestrings.
472
:note: You probably want to use join_segment_parameters instead.
476
for subsegment in subsegments:
477
if type(subsegment) is not str:
478
raise TypeError("Subsegment %r is not a bytestring" % subsegment)
479
if "," in subsegment:
480
raise errors.InvalidURLJoin(", exists in subsegments",
482
return ",".join((base,) + subsegments)
485
def join_segment_parameters(url, parameters):
486
"""Create a new URL by adding segment parameters to an existing one.
488
The parameters of the last segment in the URL will be updated; if a
489
parameter with the same key already exists it will be overwritten.
491
:param url: A URL, as string
492
:param parameters: Dictionary of parameters, keys and values as bytestrings
494
(base, existing_parameters) = split_segment_parameters(url)
496
new_parameters.update(existing_parameters)
497
for key, value in parameters.iteritems():
498
if type(key) is not str:
499
raise TypeError("parameter key %r is not a bytestring" % key)
500
if type(value) is not str:
501
raise TypeError("parameter value %r for %s is not a bytestring" %
504
raise errors.InvalidURLJoin("= exists in parameter key", url,
506
new_parameters[key] = value
507
return join_segment_parameters_raw(base,
508
*["%s=%s" % item for item in sorted(new_parameters.items())])
375
511
def _win32_strip_local_trailing_slash(url):
376
512
"""Strip slashes after the drive letter"""
377
513
if len(url) > WIN32_MIN_ABS_FILEURL_LENGTH:
521
667
# Otherwise take the url decoded one
523
669
return u'/'.join(res)
672
def derive_to_location(from_location):
673
"""Derive a TO_LOCATION given a FROM_LOCATION.
675
The normal case is a FROM_LOCATION of http://foo/bar => bar.
676
The Right Thing for some logical destinations may differ though
677
because no / may be present at all. In that case, the result is
678
the full name without the scheme indicator, e.g. lp:foo-bar => foo-bar.
679
This latter case also applies when a Windows drive
680
is used without a path, e.g. c:foo-bar => foo-bar.
681
If no /, path separator or : is found, the from_location is returned.
683
if from_location.find("/") >= 0 or from_location.find(os.sep) >= 0:
684
return os.path.basename(from_location.rstrip("/\\"))
686
sep = from_location.find(":")
688
return from_location[sep+1:]
693
def _is_absolute(url):
694
return (osutils.pathjoin('/foo', url) == url)
697
def rebase_url(url, old_base, new_base):
698
"""Convert a relative path from an old base URL to a new base URL.
700
The result will be a relative path.
701
Absolute paths and full URLs are returned unaltered.
703
scheme, separator = _find_scheme_and_separator(url)
704
if scheme is not None:
706
if _is_absolute(url):
708
old_parsed = urlparse.urlparse(old_base)
709
new_parsed = urlparse.urlparse(new_base)
710
if (old_parsed[:2]) != (new_parsed[:2]):
711
raise errors.InvalidRebaseURLs(old_base, new_base)
712
return determine_relative_path(new_parsed[2],
713
join(old_parsed[2], url))
716
def determine_relative_path(from_path, to_path):
717
"""Determine a relative path from from_path to to_path."""
718
from_segments = osutils.splitpath(from_path)
719
to_segments = osutils.splitpath(to_path)
721
for count, (from_element, to_element) in enumerate(zip(from_segments,
723
if from_element != to_element:
727
unique_from = from_segments[count:]
728
unique_to = to_segments[count:]
729
segments = (['..'] * len(unique_from) + unique_to)
730
if len(segments) == 0:
732
return osutils.pathjoin(*segments)
738
def __init__(self, scheme, quoted_user, quoted_password, quoted_host,
741
self.quoted_host = quoted_host
742
self.host = urllib.unquote(self.quoted_host)
743
self.quoted_user = quoted_user
744
if self.quoted_user is not None:
745
self.user = urllib.unquote(self.quoted_user)
748
self.quoted_password = quoted_password
749
if self.quoted_password is not None:
750
self.password = urllib.unquote(self.quoted_password)
754
self.quoted_path = quoted_path
755
self.path = urllib.unquote(self.quoted_path)
757
def __eq__(self, other):
758
return (isinstance(other, self.__class__) and
759
self.scheme == other.scheme and
760
self.host == other.host and
761
self.user == other.user and
762
self.password == other.password and
763
self.path == other.path)
766
return "<%s(%r, %r, %r, %r, %r, %r)>" % (
767
self.__class__.__name__,
768
self.scheme, self.quoted_user, self.quoted_password,
769
self.quoted_host, self.port, self.quoted_path)
772
def from_string(cls, url):
773
"""Create a URL object from a string.
775
:param url: URL as bytestring
777
if isinstance(url, unicode):
778
raise errors.InvalidURL('should be ascii:\n%r' % url)
779
url = url.encode('utf-8')
780
(scheme, netloc, path, params,
781
query, fragment) = urlparse.urlparse(url, allow_fragments=False)
782
user = password = host = port = None
784
user, host = netloc.rsplit('@', 1)
786
user, password = user.split(':', 1)
790
if ':' in host and not (host[0] == '[' and host[-1] == ']'):
792
host, port = host.rsplit(':',1)
796
raise errors.InvalidURL('invalid port number %s in url:\n%s' %
798
if host != "" and host[0] == '[' and host[-1] == ']': #IPv6
801
return cls(scheme, user, password, host, port, path)
804
netloc = self.quoted_host
806
netloc = "[%s]" % netloc
807
if self.quoted_user is not None:
808
# Note that we don't put the password back even if we
809
# have one so that it doesn't get accidentally
811
netloc = '%s@%s' % (self.quoted_user, netloc)
812
if self.port is not None:
813
netloc = '%s:%d' % (netloc, self.port)
814
return urlparse.urlunparse(
815
(self.scheme, netloc, self.quoted_path, None, None, None))
818
def _combine_paths(base_path, relpath):
819
"""Transform a Transport-relative path to a remote absolute path.
821
This does not handle substitution of ~ but does handle '..' and '.'
826
t._combine_paths('/home/sarah', 'project/foo')
827
=> '/home/sarah/project/foo'
828
t._combine_paths('/home/sarah', '../../etc')
830
t._combine_paths('/home/sarah', '/etc')
833
:param base_path: base path
834
:param relpath: relative url string for relative part of remote path.
835
:return: urlencoded string for final path.
837
if not isinstance(relpath, str):
838
raise errors.InvalidURL(relpath)
839
if relpath.startswith('/'):
842
base_parts = base_path.split('/')
843
if len(base_parts) > 0 and base_parts[-1] == '':
844
base_parts = base_parts[:-1]
845
for p in relpath.split('/'):
847
if len(base_parts) == 0:
848
# In most filesystems, a request for the parent
849
# of root, just returns root.
856
path = '/'.join(base_parts)
857
if not path.startswith('/'):
861
def clone(self, offset=None):
862
"""Return a new URL for a path relative to this URL.
864
:param offset: A relative path, already urlencoded
865
:return: `URL` instance
867
if offset is not None:
868
relative = unescape(offset).encode('utf-8')
869
path = self._combine_paths(self.path, relative)
870
path = urllib.quote(path)
872
path = self.quoted_path
873
return self.__class__(self.scheme, self.quoted_user,
874
self.quoted_password, self.quoted_host, self.port,
879
"""Extract the server address, the credentials and the path from the url.
881
user, password, host and path should be quoted if they contain reserved
884
:param url: an quoted url
885
:return: (scheme, user, password, host, port, path) tuple, all fields
888
parsed_url = URL.from_string(url)
889
return (parsed_url.scheme, parsed_url.user, parsed_url.password,
890
parsed_url.host, parsed_url.port, parsed_url.path)