Basic anchor adding.

libpathod/app.py

@@ -37,10 +37,8 @@ class Log(_Page):
 
 
 class Pathod(object):
-    anchor = "/p/"
-    def __init__(self, application, request, **settings):
+    def __init__(self, spec, application, request, **settings):
         self.application, self.request, self.settings = application, request, settings
-        spec = urllib.unquote(self.request.uri)[len(self.anchor):]
         try:
             self.response = rparse.parse(self.settings, spec)
         except rparse.ParseException, v:
@@ -53,9 +51,17 @@ class Pathod(object):
         self.response.render(self.request)
 
 
+class RequestPathod(Pathod):
+    anchor = "/p/"
+    def __init__(self, application, request, **settings):
+        spec = urllib.unquote(request.uri)[len(self.anchor):]
+        Pathod.__init__(self, spec, application, request, **settings)
+
+
 class PathodApp(tornado.web.Application):
     def __init__(self, **settings):
         self.templates = tornado.template.Loader(utils.data.path("templates"))
+        self.appsettings = settings
         tornado.web.Application.__init__(
             self,
             [
@@ -63,13 +69,37 @@ class PathodApp(tornado.web.Application):
                 (r"/log", Log),
                 (r"/help", Help),
                 (r"/preview", Preview),
-                (r"/p/.*", Pathod, settings),
+                (r"/p/.*", RequestPathod, settings),
             ],
             static_path = utils.data.path("static"),
             template_path = utils.data.path("templates"),
             debug=True
         )
 
+    def add_anchor(self, pattern, spec):
+        """
+            Anchors are added to the beginning of the handlers.
+        """
+        # We assume we have only one host...
+        l = self.handlers[0][1]
+        class FixedPathod(Pathod):
+            def __init__(self, application, request, **settings):
+                Pathod.__init__(self, spec, application, request, **settings)
+        FixedPathod.spec = spec
+        l.insert(0, tornado.web.URLSpec(pattern, FixedPathod, self.appsettings))
+
+    def get_anchors(self, pattern, spec):
+        """
+            Anchors are added to the beginning of the handlers.
+        """
+        pass
+
+    def remove_anchor(self, pattern, spec):
+        """
+            Anchors are added to the beginning of the handlers.
+        """
+        pass
+
 
 # begin nocover
 def run(application, port, ssl_options):

libpathod/utils.py

@@ -1,4 +1,27 @@
-import copy, os
+import copy, os, re
+import rparse
+
+class AnchorError(Exception): pass
+
+def parse_anchor_spec(s, settings):
+    """
+        For now, this is very simple, and you can't have an '=' in your regular
+        expression.
+    """
+    if not "=" in s:
+        raise AnchorError("Invalid anchor definition: %s"%s)
+    rex, spec = s.split("=", 1)
+    try:
+        re.compile(rex)
+    except re.error:
+        raise AnchorError("Invalid regex in anchor: %s"%s)
+    try:
+        rparse.parse(settings, spec)
+    except rparse.ParseException, v:
+        raise AnchorError("Invalid page spec in anchor: '%s', %s"%(s, str(v)))
+
+    return rex, spec
+
 
 class Data:
     def __init__(self, name):

pathod

@@ -1,11 +1,15 @@
 #!/usr/bin/env python
-import argparse
+import argparse, sys
 from libpathod import app, utils
 import tornado.ioloop
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(description='Process some integers.')
     parser.add_argument("-p", dest='port', default=8888, type=int, help='Port.')
+    parser.add_argument(
+        "-a", dest='anchors', default=[], type=str, action="append",
+        help='Add an anchor. Specified as a string with the form pattern=pagespec'
+    )
     parser.add_argument(
         "-d", dest='staticdir', default=None, type=str,
         help='Directory for static files.'
@@ -26,10 +30,17 @@ if __name__ == "__main__":
         help='SSL cert file. If not specified, a default cert is used.'
     )
     args = parser.parse_args()
+    settings = dict(
+        staticdir=args.staticdir
+    )
+    application = app.PathodApp(**settings)
+    for i in args.anchors:
+        try:
+            rex, spec = utils.parse_anchor_spec(i, settings)
+        except utils.AnchorError, v:
+            parser.error(str(v))
+        application.add_anchor(rex, spec)
 
-    application = app.PathodApp(
-                    staticdir=args.staticdir
-                )
     if args.ssl:
         ssl = dict(
              keyfile = args.ssl_keyfile or utils.data.path("resources/server.key"),

test/test_app.py

@@ -2,8 +2,14 @@ import libpry
 from libpathod import app
 from tornado import httpserver
 
-
 class uApplication(libpry.AutoTree):
+    def test_anchors(self):
+        a = app.PathodApp(staticdir=None)
+        a.add_anchor("/foo", "200")
+        assert a.handlers[0][1][0].handler_class.__name__ == "FixedPathod"
+
+
+class uPages(libpry.AutoTree):
     def dummy_page(self, path):
         # A hideous, hideous kludge, but Tornado seems to have no more sensible
         # way to do this.
@@ -15,9 +21,6 @@ class uApplication(libpry.AutoTree):
         del r.connection
         return klass(a, r)
 
-    def test_create(self):
-        assert app.PathodApp(staticdir=None)
-
     def test_index(self):
         page = self.dummy_page("/")
         page.get()
@@ -31,5 +34,6 @@ class uApplication(libpry.AutoTree):
 
 
 tests = [
-    uApplication()
+    uApplication(),
+    uPages()
 ]

test/test_utils.py

@@ -2,7 +2,13 @@ import libpry
 from libpathod import utils
 
 
+class uparse_anchor_spec(libpry.AutoTree):
+    def test_simple(self):
+        assert utils.parse_anchor_spec("foo=200", {}) == ("foo", "200")
+        libpry.raises(utils.AnchorError, utils.parse_anchor_spec, "*=200", {})
+        libpry.raises(utils.AnchorError, utils.parse_anchor_spec, "foo=bar", {})
 
 
 tests = [
+    uparse_anchor_spec()
 ]

todo

@@ -1,5 +1,4 @@
 
-- HTTPS
 - Anchors
 - Logs, log reset, log retrieval
 - Add anchors programmatically?