From 05c02322f5a09c14f49c529d6fd885153e52c66f Mon Sep 17 00:00:00 2001
From: Chris McDonough <chrism@agendaless.com>
Date: Wed, 24 Jun 2009 19:23:43 +0000
Subject: Merge noroutes branch to trunk.

---
 repoze/bfg/urldispatch.py | 129 ++++++++++++++++++++++++++++++++--------------
 1 file changed, 89 insertions(+), 40 deletions(-)

(limited to 'repoze/bfg/urldispatch.py')

diff --git a/repoze/bfg/urldispatch.py b/repoze/bfg/urldispatch.py
index 0281b52b3..497d3980e 100644
--- a/repoze/bfg/urldispatch.py
+++ b/repoze/bfg/urldispatch.py
@@ -1,53 +1,102 @@
-from routes import Mapper
-from routes import request_config
+import re
 
 _marker = object()
 
-class RoutesRootFactory(Mapper):
-    def __init__(self, default_root_factory, **kw):
+class Route(object):
+    def __init__(self, name, matcher, generator, factory):
+        self.name = name
+        self.matcher = matcher
+        self.generator = generator
+        self.factory = factory
+
+    def match(self, path):
+        return self.matcher(path)
+
+    def generate(self, kw):
+        return self.generator(kw)
+
+class RoutesRootFactory(object):
+    def __init__(self, default_root_factory):
         self.default_root_factory = default_root_factory
-        kw['controller_scan'] = None
-        kw['always_scan'] = False
-        kw['directory'] = None
-        kw['explicit'] = True
-        Mapper.__init__(self, **kw)
-        self._regs_created = False
+        self.routelist = []
+        self.routes = {}
 
     def has_routes(self):
-        return bool(self.matchlist)
+        return bool(self.routelist)
 
-    def connect(self, *arg, **kw):
-        result = Mapper.connect(self, *arg, **kw)
-        route = self.matchlist[-1]
-        route._factory = None # overridden by ZCML
-        return result
+    def connect(self, name, path, factory=None):
+        matcher, generator = _compile_route(path)
+        route = Route(name, matcher, generator, factory)
+        self.routelist.append(route)
+        self.routes[name] = route
+        return route
+
+    def generate(self, name, kw):
+        return self.routes[name].generate(kw)
 
     def __call__(self, environ):
-        if not self._regs_created:
-            self.create_regs([])
-            self._regs_created = True
         path = environ.get('PATH_INFO', '/')
-        self.environ = environ # sets the thread local
-        match = self.routematch(path)
-        if match:
-            args, route = match
-        else:
-            args = None
-        if isinstance(args, dict): # might be an empty dict
-            args = args.copy()
-            config = request_config()
-            config.mapper = self
-            config.mapper_dict = args
-            config.host = environ.get('HTTP_HOST', environ['SERVER_NAME'])
-            config.protocol = environ['wsgi.url_scheme']
-            config.redirect = None
-            environ['wsgiorg.routing_args'] = ((), args)
-            environ['bfg.routes.route'] = route
-            environ['bfg.routes.matchdict'] = args
-            adhoc_attrs = environ.setdefault('webob.adhoc_attrs', {})
-            adhoc_attrs['matchdict'] = args
-            factory = route._factory or self.default_root_factory
-            return factory(environ)
+        for route in self.routelist:
+            match = route.match(path)
+            if match is not None:
+                environ['wsgiorg.routing_args'] = ((), match)
+                environ['bfg.routes.route'] = route
+                environ['bfg.routes.matchdict'] = match
+                adhoc_attrs = environ.setdefault('webob.adhoc_attrs', {})
+                adhoc_attrs['matchdict'] = match
+                factory = route.factory or self.default_root_factory
+                return factory(environ)
 
         return self.default_root_factory(environ)
 
+# stolen from bobo and modified
+route_re = re.compile(r'(/:[a-zA-Z]\w*)')
+def _compile_route(route):
+    if not route.startswith('/'):
+        route = '/' + route
+    star = None
+    if '*' in route:
+        route, star = route.rsplit('*', 1)
+    pat = route_re.split(route)
+    pat.reverse()
+    rpat = []
+    gen = []
+    prefix = pat.pop()
+    if prefix:
+        rpat.append(re.escape(prefix))
+        gen.append(prefix)
+    while pat:
+        name = pat.pop()
+        name = name[2:]
+        gen.append('/%%(%s)s' % name)
+        name = '/(?P<%s>[^/]*)' % name
+        rpat.append(name)
+        s = pat.pop()
+        if s:
+            rpat.append(re.escape(s))
+            gen.append(s)
+
+    if star:
+        rpat.append('(?P<%s>.*?)' % star)
+        gen.append('%%(%s)s' % star)
+
+    pattern = ''.join(rpat) + '$'
+
+    match = re.compile(pattern).match
+    def matcher(path):
+        m = match(path)
+        if m is None:
+            return m
+        return dict(item for item in m.groupdict().iteritems()
+                    if item[1] is not None)
+
+    gen = ''.join(gen)
+    def generator(dict):
+        newdict = {}
+        for k, v in dict.items():
+            if isinstance(v, unicode):
+                v = v.encode('utf-8')
+            newdict[k] = v
+        return gen % newdict
+
+    return matcher, generator
-- 
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