author | Tero Marttila <terom@fixme.fi> |
Sat, 07 Feb 2009 21:21:10 +0200 | |
branch | sites |
changeset 40 | 71ab68f31a1c |
parent 39 | 82df0bb66ca7 |
child 41 | 9585441a4bfb |
permissions | -rw-r--r-- |
39
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""" |
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Tree-based URL mapping |
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""" |
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|
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import re |
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import os.path |
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# for Mapper |
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from lib import map |
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class URLError (Exception) : |
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""" |
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Error with an URL definition |
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""" |
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pass |
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class LabelValue (object) : |
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""" |
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Represents the value of a ValueLabel... love these names |
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""" |
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def __init__ (self, label, value) : |
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""" |
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Just store |
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""" |
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self.label = label |
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self.value = value |
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def __str__ (self) : |
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return "%s=%r" % (self.label.key, self.value) |
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def __repr__ (self) : |
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return "<%s>" % self |
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class Label (object) : |
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""" |
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Base class for URL labels (i.e. the segments of the URL between /s) |
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""" |
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@staticmethod |
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def parse (mask, defaults) : |
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""" |
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Parse the given label-segment, and return a *Label instance |
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""" |
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# empty? |
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if not mask : |
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return EmptyLabel() |
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# simple value? |
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match = SimpleValueLabel.EXPR.match(mask) |
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if match : |
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# key |
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key = match.group('key') |
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# type |
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type = match.group("type") |
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if type : |
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# XXX: resolve using eval() for now, should be a module or something |
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type = eval(type) |
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else : |
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type = str |
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# defaults? |
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default = defaults.get(key) |
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if not default : |
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default = match.group('default') |
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if default : |
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# apply type to default |
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default = type(default) |
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# build |
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return SimpleValueLabel(key, type, default) |
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# static? |
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match = StaticLabel.EXPR.match(mask) |
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if match : |
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return StaticLabel(match.group('name')) |
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# invalid |
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raise URLError("Invalid label: %r" % (mask, )) |
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def match (self, value=None) : |
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""" |
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Match this label against the given value, returning either True to match without a value, a LabelValue |
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object, or boolean false to not match. |
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If value is None, this means that only a default value should be returned. |
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""" |
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abstract |
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class EmptyLabel (Label) : |
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""" |
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An empty label, i.e. just a slash in the URL |
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""" |
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def __eq__ (self, other) : |
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""" |
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Just compares type |
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""" |
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return isinstance(other, EmptyLabel) |
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def match (self, value=None) : |
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""" |
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Match empty string -> True |
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""" |
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# no default |
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if value is None : |
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return False |
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# only empty segments |
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if value == '' : |
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return True |
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|
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def __str__ (self) : |
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return '' |
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|
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class StaticLabel (Label) : |
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""" |
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A simple literal Label, used for fixed terms in the URL |
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""" |
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|
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EXPR = re.compile(r'^(?P<name>[a-zA-Z_.-]+)$') |
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135 |
|
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def __init__ (self, name) : |
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""" |
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The given name is the literal name of this label |
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""" |
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|
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self.name = name |
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|
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def __eq__ (self, other) : |
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""" |
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Compares names |
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""" |
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|
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return isinstance(other, StaticLabel) and self.name == other.name |
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|
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def match (self, value=None) : |
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""" |
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Match exactly -> True |
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""" |
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|
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# no defaults |
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if value is None : |
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return False |
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|
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# match name |
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if value == self.name : |
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return True |
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|
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def __str__ (self) : |
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return self.name |
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|
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class ValueLabel (Label) : |
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""" |
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A label with a key and a value |
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|
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XXX: do we even need this? |
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""" |
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|
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def __init__ (self, key, default) : |
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""" |
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Set the key and default value. Default value may be None if there is no default value defined |
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""" |
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|
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self.key = key |
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self.default = default |
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|
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def __eq__ (self, other) : |
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""" |
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Compares keys |
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""" |
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185 |
|
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return isinstance(other, ValueLabel) and self.key == other.key |
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|
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class SimpleValueLabel (ValueLabel) : |
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""" |
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A label that has a name and a simple string value |
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""" |
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192 |
|
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EXPR = re.compile(r'^\{(?P<key>[a-zA-Z_][a-zA-Z0-9_]*)(:(?P<type>[a-zA-Z_][a-zA-Z0-9_]*))?(=(?P<default>[^}]+))?\}$') |
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194 |
|
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def __init__ (self, key, type=str, default=None) : |
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196 |
""" |
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The given key is the name of this label's value |
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198 |
""" |
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199 |
|
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# type |
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self.type = type |
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202 |
|
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# store |
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self.key = key |
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self.default = default |
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|
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def match (self, value=None) : |
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208 |
""" |
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Match -> LabelValue |
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""" |
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211 |
|
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# default? |
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if value is None and self.default : |
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return LabelValue(self, self.default) |
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|
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# only non-empty values! |
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elif value : |
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# convert with type |
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try : |
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value = self.type(value) |
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|
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except Exception, e : |
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raise URLError("Bad value %r for type %s: %s" % (value, self.type.__name__, e)) |
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|
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return LabelValue(self, value) |
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|
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def __str__ (self) : |
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return '{%s%s%s}' % ( |
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self.key, |
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':%s' % (self.type.__name__ ) if self.type != str else '', |
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'=%s' % (self.default, ) if self.default else '', |
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232 |
) |
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|
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class URL (object) : |
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""" |
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236 |
Represents a specific URL |
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237 |
""" |
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238 |
|
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239 |
def __init__ (self, url_mask, handler, **defaults) : |
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""" |
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Create an URL with the given url mask, handler, and default values |
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""" |
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243 |
|
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# store |
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self.url_mask = url_mask |
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self.handler = handler |
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self.defaults = defaults |
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|
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# build our labels |
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self.label_path = [Label.parse(mask, defaults) for mask in url_mask.split('/')] |
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|
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def get_label_path (self) : |
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""" |
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Returns a list containing the labels in this url |
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""" |
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|
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# copy self.label_path |
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return list(self.label_path) |
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|
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def execute (self, request, label_values) : |
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""" |
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Invoke the handler, using the given label values |
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""" |
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|
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# start with the defaults |
40 | 266 |
kwargs = self.defaults.copy() |
39
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|
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# then add all the values |
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for label_value in label_values : |
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kwargs[label_value.label.key] = label_value.value |
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|
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# execute the handler |
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return self.handler(request, **kwargs) |
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|
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def __str__ (self) : |
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return '/'.join(str(label) for label in self.label_path) |
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|
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def __repr__ (self) : |
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return "URL(%r, %r)" % (str(self), self.handler) |
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|
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class URLNode (object) : |
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""" |
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Represents a node in the URLTree |
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""" |
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285 |
|
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def __init__ (self, parent, label) : |
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""" |
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Initialize with the given parent and label, empty children dict |
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""" |
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|
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# the parent URLNode |
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self.parent = parent |
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|
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# this node's Label |
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self.label = label |
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|
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# list of child URLNodes |
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self.children = [] |
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|
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# this node's URL, set by add_url for an empty label_path |
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self.url = None |
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302 |
|
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def _build_child (self, label) : |
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""" |
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305 |
Build, insert and return a new child Node |
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""" |
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307 |
|
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# build new child |
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child = URLNode(self, label) |
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|
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# add to children |
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self.children.append(child) |
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|
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# return |
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return child |
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316 |
|
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def add_url (self, url, label_path) : |
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""" |
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Add a URL object to this node under the given path. Uses recursion to process the path. |
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|
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The label_path argument is a (partial) label path as returned by URL.get_label_path. |
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|
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If label_path is empty (len zero, or begins with EmptyLabel), then the given url is assigned to this node, if no |
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url was assigned before. |
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325 |
""" |
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326 |
|
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# matches this node? |
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if not label_path or isinstance(label_path[0], EmptyLabel) : |
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if self.url : |
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raise URLError(url, "node already defined") |
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|
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332 |
else : |
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# set |
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self.url = url |
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|
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else : |
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# pop child label from label_path |
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child_label = label_path.pop(0) |
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|
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# look for the child to recurse into |
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child = None |
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|
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# look for an existing child with that label |
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for child in self.children : |
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if child.label == child_label : |
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# found, use this |
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break |
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|
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else : |
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# build a new child |
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child = self._build_child(child_label) |
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352 |
|
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# recurse to handle the rest of the label_path |
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child.add_url(url, label_path) |
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|
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def match (self, label_path) : |
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""" |
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358 |
Locate the URL object corresponding to the given label_path value under this node. |
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|
359 |
|
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Returns a (url, label_values) tuple |
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""" |
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362 |
|
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# determine value to use |
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value = None |
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|
365 |
|
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|
366 |
# empty label_path? |
82df0bb66ca7
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Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
367 |
if not label_path or label_path[0] == '' : |
82df0bb66ca7
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Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
368 |
# the search ends at this node |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
369 |
if self.url : |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
370 |
# this URL is the best match |
82df0bb66ca7
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Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
371 |
return (self.url, []) |
82df0bb66ca7
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Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
372 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
373 |
elif not self.children : |
82df0bb66ca7
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Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
374 |
# incomplete URL |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
375 |
raise URLError("no URL handler defined for this Node") |
82df0bb66ca7
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Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
376 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
377 |
else : |
82df0bb66ca7
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Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
378 |
# use default value, i.e. Label.match(None) |
82df0bb66ca7
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Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
379 |
label = None |
82df0bb66ca7
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Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
380 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
381 |
else : |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
382 |
# pop the next label from the label path |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
383 |
label = label_path.pop(0) |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
384 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
385 |
# return one match... |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
386 |
match = value = None |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
387 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
388 |
# recurse through our children, DFS |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
389 |
for child in self.children : |
82df0bb66ca7
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Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
390 |
# match value |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
391 |
value = child.label.match(label) |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
392 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
393 |
# skip those that don't match at all |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
394 |
if not value : |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
395 |
continue; |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
396 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
397 |
# already found a match? :/ |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
398 |
if match : |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
399 |
raise URLError("Ambiguous URL") |
82df0bb66ca7
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Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
400 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
401 |
# ok, but continue looking to make sure there's no ambiguous URLs |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
402 |
match = child |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
403 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
404 |
# found something? |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
405 |
if not match : |
40 | 406 |
raise URLError("No child found for label: %s + %s + %s" % (self.get_url(), label, '/'.join(str(l) for l in label_path))) |
39
82df0bb66ca7
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Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
407 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
408 |
# ok, recurse into the match |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
409 |
url, label_value = match.match(label_path) |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
410 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
411 |
# add our value? |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
412 |
if isinstance(value, LabelValue) : |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
413 |
label_value.append(value) |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
414 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
415 |
# return the match |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
416 |
return url, label_value |
40 | 417 |
|
418 |
def get_url (self) : |
|
419 |
""" |
|
420 |
Returns the URL for this node, by iterating over our parents |
|
421 |
""" |
|
422 |
||
423 |
# URL segments in reverse order |
|
424 |
segments = [''] |
|
425 |
||
426 |
# start with ourself |
|
427 |
node = self |
|
428 |
||
429 |
# iterate up to root |
|
430 |
while node : |
|
431 |
segments.append(str(node.label)) |
|
432 |
||
433 |
node = node.parent |
|
434 |
||
435 |
# reverse |
|
436 |
segments.reverse() |
|
437 |
||
438 |
# return |
|
439 |
return '/'.join(segments) |
|
440 |
||
39
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
441 |
def dump (self, indent=0) : |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
442 |
""" |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
443 |
Returns a multi-line string representation of this Node |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
444 |
""" |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
445 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
446 |
return '\n'.join([ |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
447 |
"%-45s%s" % ( |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
448 |
' '*indent + str(self.label) + ('/' if self.children else ''), |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
449 |
(' -> %r' % self.url) if self.url else '' |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
450 |
) |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
451 |
] + [ |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
452 |
child.dump(indent + 4) for child in self.children |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
453 |
]) |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
454 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
455 |
def __str__ (self) : |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
456 |
return "%s/[%s]" % (self.label, ','.join(str(child) for child in self.children)) |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
457 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
458 |
class URLTree (map.Mapper) : |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
459 |
""" |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
460 |
Map requests to handlers, using a defined tree of URLs |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
461 |
""" |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
462 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
463 |
def __init__ (self, url_list) : |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
464 |
""" |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
465 |
Initialize the tree using the given list of URLs |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
466 |
""" |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
467 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
468 |
# root node |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
469 |
self.root = URLNode(None, EmptyLabel()) |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
470 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
471 |
# just add each URL |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
472 |
for url in url_list : |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
473 |
self.add_url(url) |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
474 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
475 |
def add_url (self, url) : |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
476 |
""" |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
477 |
Adds the given URL to the tree. The URL must begin with a root slash. |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
478 |
""" |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
479 |
# get url's label path |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
480 |
path = url.get_label_path() |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
481 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
482 |
# should begin with root |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
483 |
root_label = path.pop(0) |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
484 |
assert root_label == self.root.label, "URL must begin with root" |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
485 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
486 |
# add to root |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
487 |
self.root.add_url(url, path) |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
488 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
489 |
def match (self, url) : |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
490 |
""" |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
491 |
Find the URL object best corresponding to the given url, matching any ValueLabels. |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
492 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
493 |
Returns an (URL, [LabelValue]) tuple. |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
494 |
""" |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
495 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
496 |
# split it into labels |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
497 |
path = url.split('/') |
40 | 498 |
|
499 |
# empty URL is empty |
|
500 |
if url : |
|
501 |
# ensure that it doesn't start with a / |
|
502 |
assert not self.root.label.match(path[0]), "URL must not begin with root" |
|
39
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
503 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
504 |
# just match starting at root |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
505 |
return self.root.match(path) |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
506 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
507 |
def handle_request (self, request) : |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
508 |
""" |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
509 |
Looks up the request's URL, and invokes its handler |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
510 |
""" |
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
511 |
|
40 | 512 |
# get the requested URL |
513 |
request_url = request.get_page_name() |
|
514 |
||
515 |
# find the URL+values to use |
|
516 |
url, label_values = self.match(request_url) |
|
39
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
517 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
518 |
# let the URL handle it |
40 | 519 |
return url.execute(request, label_values) |
39
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
520 |
|
82df0bb66ca7
split off to urltree.py, and add support for types
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
521 |