def test_has_uri_prefix(self):
self.failUnless(uri.has_uri_prefix(b"URI:foo"))
self.failUnless(uri.has_uri_prefix(b"ro.URI:foo"))
self.failUnless(uri.has_uri_prefix(b"imm.URI:foo"))
self.failUnless(uri.has_uri_prefix("URI:foo"))
self.failUnless(uri.has_uri_prefix("ro.URI:foo"))
self.failUnless(uri.has_uri_prefix("imm.URI:foo"))
self.failIf(uri.has_uri_prefix(None))
self.failIf(uri.has_uri_prefix("foo"))
def get_alias(aliases, path_unicode, default):
"""
Transform u"work:path/filename" into (aliases[u"work"], u"path/filename".encode('utf-8')).
If default=None, then an empty alias is indicated by returning
DefaultAliasMarker. We special-case strings with a recognized cap URI
prefix, to make it easy to access specific files/directories by their
caps.
If the transformed alias is either not found in aliases, or is blank
and default is not found in aliases, an UnknownAliasError is
raised.
"""
precondition(isinstance(path_unicode, unicode), path_unicode)
from allmydata import uri
path = path_unicode.encode('utf-8').strip(" ")
if uri.has_uri_prefix(path):
# We used to require "URI:blah:./foo" in order to get a subpath,
# stripping out the ":./" sequence. We still allow that for compatibility,
# but now also allow just "URI:blah/foo".
sep = path.find(":./")
if sep != -1:
return path[:sep], path[sep+3:]
sep = path.find("/")
if sep != -1:
return path[:sep], path[sep+1:]
return path, ""
colon = path.find(":")
if colon == -1:
# no alias
if default == None:
return DefaultAliasMarker, path
if default not in aliases:
raise UnknownAliasError("No alias specified, and the default %s alias doesn't exist. "
"To create it, use 'tahoe create-alias %s'."
% (quote_output(default), quote_output(default, quotemarks=False)))
return uri.from_string_dirnode(aliases[default]).to_string(), path
if colon == 1 and default is None and platform_uses_lettercolon_drivename():
# treat C:\why\must\windows\be\so\weird as a local path, not a tahoe
# file in the "C:" alias
return DefaultAliasMarker, path
# decoding must succeed because path is valid UTF-8 and colon & space are ASCII
alias = path[:colon].decode('utf-8')
if u"/" in alias:
# no alias, but there's a colon in a dirname/filename, like
# "foo/bar:7"
if default == None:
return DefaultAliasMarker, path
if default not in aliases:
raise UnknownAliasError("No alias specified, and the default %s alias doesn't exist. "
"To create it, use 'tahoe create-alias %s'."
% (quote_output(default), quote_output(default, quotemarks=False)))
return uri.from_string_dirnode(aliases[default]).to_string(), path
if alias not in aliases:
raise UnknownAliasError("Unknown alias %s, please create it with 'tahoe add-alias' or 'tahoe create-alias'." %
quote_output(alias))
return uri.from_string_dirnode(aliases[alias]).to_string(), path[colon+1:]
def get_alias(aliases, path_unicode, default):
"""
Transform u"work:path/filename" into (aliases[u"work"], u"path/filename".encode('utf-8')).
If default=None, then an empty alias is indicated by returning
DefaultAliasMarker. We special-case strings with a recognized cap URI
prefix, to make it easy to access specific files/directories by their
caps.
If the transformed alias is either not found in aliases, or is blank
and default is not found in aliases, an UnknownAliasError is
raised.
"""
precondition(isinstance(path_unicode, unicode), path_unicode)
from allmydata import uri
path = path_unicode.encode('utf-8').strip(" ")
if uri.has_uri_prefix(path):
# We used to require "URI:blah:./foo" in order to get a subpath,
# stripping out the ":./" sequence. We still allow that for compatibility,
# but now also allow just "URI:blah/foo".
sep = path.find(":./")
if sep != -1:
return path[:sep], path[sep+3:]
sep = path.find("/")
if sep != -1:
return path[:sep], path[sep+1:]
return path, ""
colon = path.find(":")
if colon == -1:
# no alias
if default == None:
return DefaultAliasMarker, path
if default not in aliases:
raise UnknownAliasError("No alias specified, and the default %s alias doesn't exist. "
"To create it, use 'tahoe create-alias %s'."
% (quote_output(default), quote_output(default, quotemarks=False)))
return uri.from_string_dirnode(aliases[default]).to_string(), path
if colon == 1 and default is None and platform_uses_lettercolon_drivename():
# treat C:\why\must\windows\be\so\weird as a local path, not a tahoe
# file in the "C:" alias
return DefaultAliasMarker, path
# decoding must succeed because path is valid UTF-8 and colon & space are ASCII
alias = path[:colon].decode('utf-8')
if u"/" in alias:
# no alias, but there's a colon in a dirname/filename, like
# "foo/bar:7"
if default == None:
return DefaultAliasMarker, path
if default not in aliases:
raise UnknownAliasError("No alias specified, and the default %s alias doesn't exist. "
"To create it, use 'tahoe create-alias %s'."
% (quote_output(default), quote_output(default, quotemarks=False)))
return uri.from_string_dirnode(aliases[default]).to_string(), path
if alias not in aliases:
raise UnknownAliasError("Unknown alias %s, please create it with 'tahoe add-alias' or 'tahoe create-alias'." %
quote_output(alias))
return uri.from_string_dirnode(aliases[alias]).to_string(), path[colon+1:]
def test_has_uri_prefix(self):
self.failUnless(uri.has_uri_prefix("URI:foo"))
self.failUnless(uri.has_uri_prefix("ro.URI:foo"))
self.failUnless(uri.has_uri_prefix("imm.URI:foo"))
self.failIf(uri.has_uri_prefix(None))
self.failIf(uri.has_uri_prefix("foo"))
