4 from twisted.python import usage
5 from allmydata.util.assertutil import precondition
6 from allmydata.util.encodingutil import unicode_to_url, quote_output, argv_to_abspath
7 from allmydata.util.fileutil import abspath_expanduser_unicode
10 _default_nodedir = None
11 if sys.platform == 'win32':
12 from allmydata.windows import registry
13 path = registry.get_base_dir_path()
15 precondition(isinstance(path, unicode), path)
16 _default_nodedir = abspath_expanduser_unicode(path)
18 if _default_nodedir is None:
19 path = abspath_expanduser_unicode(u"~/.tahoe")
20 precondition(isinstance(path, unicode), path)
21 _default_nodedir = path
23 def get_default_nodedir():
24 return _default_nodedir
27 class BaseOptions(usage.Options):
28 # unit tests can override these to point at StringIO instances
34 ["quiet", "q", "Operate silently."],
35 ["version", "V", "Display version numbers."],
36 ["version-and-path", None, "Display version numbers and paths to their locations."],
39 ["node-directory", "d", None, "Specify which Tahoe node directory should be used." + (
40 _default_nodedir and (" [default for most commands: " + quote_output(_default_nodedir) + "]") or "")],
44 super(BaseOptions, self).__init__()
45 self.command_name = os.path.basename(sys.argv[0])
46 if self.command_name == 'trial':
47 self.command_name = 'tahoe'
49 def opt_version(self):
51 print >>self.stdout, allmydata.get_package_versions_string(debug=True)
52 self.no_command_needed = True
54 def opt_version_and_path(self):
56 print >>self.stdout, allmydata.get_package_versions_string(show_paths=True, debug=True)
57 self.no_command_needed = True
61 default_nodedir = _default_nodedir
64 ["basedir", "C", None, "Same as --node-directory."],
67 def parseArgs(self, basedir=None):
68 if self['node-directory'] and self['basedir']:
69 raise usage.UsageError("The --node-directory (or -d) and --basedir (or -C) "
70 "options cannot both be used.")
73 b = argv_to_abspath(basedir)
75 b = argv_to_abspath(self['basedir'])
76 elif self['node-directory']:
77 b = argv_to_abspath(self['node-directory'])
79 b = self.default_nodedir
82 def postOptions(self):
83 if not self['basedir']:
84 raise usage.UsageError("A base directory for the node must be provided.")
87 DEFAULT_ALIAS = u"tahoe"
90 def get_aliases(nodedir):
91 from allmydata import uri
93 aliasfile = os.path.join(nodedir, "private", "aliases")
94 rootfile = os.path.join(nodedir, "private", "root_dir.cap")
96 f = open(rootfile, "r")
97 rootcap = f.read().strip()
99 aliases[DEFAULT_ALIAS] = uri.from_string_dirnode(rootcap).to_string()
100 except EnvironmentError:
103 f = codecs.open(aliasfile, "r", "utf-8")
104 for line in f.readlines():
106 if line.startswith("#") or not line:
108 name, cap = line.split(u":", 1)
109 # normalize it: remove http: prefix, urldecode
110 cap = cap.strip().encode('utf-8')
111 aliases[name] = uri.from_string_dirnode(cap).to_string()
112 except EnvironmentError:
116 class DefaultAliasMarker:
119 pretend_platform_uses_lettercolon = False # for tests
120 def platform_uses_lettercolon_drivename():
121 if ("win32" in sys.platform.lower()
122 or "cygwin" in sys.platform.lower()
123 or pretend_platform_uses_lettercolon):
128 class TahoeError(Exception):
129 def __init__(self, msg):
130 Exception.__init__(self, msg)
133 def display(self, err):
134 print >>err, self.msg
137 class UnknownAliasError(TahoeError):
138 def __init__(self, msg):
139 TahoeError.__init__(self, "error: " + msg)
142 def get_alias(aliases, path_unicode, default):
144 Transform u"work:path/filename" into (aliases[u"work"], u"path/filename".encode('utf-8')).
145 If default=None, then an empty alias is indicated by returning
146 DefaultAliasMarker. We special-case strings with a recognized cap URI
147 prefix, to make it easy to access specific files/directories by their
149 If the transformed alias is either not found in aliases, or is blank
150 and default is not found in aliases, an UnknownAliasError is
153 precondition(isinstance(path_unicode, unicode), path_unicode)
155 from allmydata import uri
156 path = path_unicode.encode('utf-8').strip(" ")
157 if uri.has_uri_prefix(path):
158 # We used to require "URI:blah:./foo" in order to get a subpath,
159 # stripping out the ":./" sequence. We still allow that for compatibility,
160 # but now also allow just "URI:blah/foo".
161 sep = path.find(":./")
163 return path[:sep], path[sep+3:]
166 return path[:sep], path[sep+1:]
168 colon = path.find(":")
172 return DefaultAliasMarker, path
173 if default not in aliases:
174 raise UnknownAliasError("No alias specified, and the default %s alias doesn't exist. "
175 "To create it, use 'tahoe create-alias %s'."
176 % (quote_output(default), quote_output(default, quotemarks=False)))
177 return aliases[default], path
178 if colon == 1 and default is None and platform_uses_lettercolon_drivename():
179 # treat C:\why\must\windows\be\so\weird as a local path, not a tahoe
180 # file in the "C:" alias
181 return DefaultAliasMarker, path
183 # decoding must succeed because path is valid UTF-8 and colon & space are ASCII
184 alias = path[:colon].decode('utf-8')
186 # no alias, but there's a colon in a dirname/filename, like
189 return DefaultAliasMarker, path
190 if default not in aliases:
191 raise UnknownAliasError("No alias specified, and the default %s alias doesn't exist. "
192 "To create it, use 'tahoe create-alias %s'."
193 % (quote_output(default), quote_output(default, quotemarks=False)))
194 return aliases[default], path
195 if alias not in aliases:
196 raise UnknownAliasError("Unknown alias %s, please create it with 'tahoe add-alias' or 'tahoe create-alias'." %
198 return aliases[alias], path[colon+1:]
200 def escape_path(path):
201 segments = path.split("/")
202 return "/".join([urllib.quote(unicode_to_url(s)) for s in segments])