--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/svgsitemap/middleware.py	Mon Dec 27 22:09:09 2010 -0800
@@ -0,0 +1,91 @@
+"""
+request dispatcher
+"""
+
+__all__ = ['MapserverMiddleware', 'SVGSiteMap']
+
+import os
+from pygraphviz import AGraph
+from webob import Request, exc
+
+class MapserverMiddleware(object):
+    """silly middleware to serve just the svg"""
+    def __init__(self, app, svgmap, path='/map'):
+        self.app
+        self.svgmap = svgmap
+        self.path = path
+
+    def __call__(self, environ, start_response):
+        request = Request(environ)
+        if request.path_info == self.path or not self.path:
+            content = file(self.svgmap).read()
+            return Response(content_type='image/svg+xml', body=content)
+        return app(environ, start_response)
+    
+
+class SVGSiteMap(object):
+
+    ### class level variables
+    defaults = { 'app': None,
+                 'name': 'k0s.org',
+                 'file': None,
+                 'output': None,
+                 'bgcolor': 'black',
+                 'fontcolor': 'white',
+                 'fontname': 'Helvetica',
+                 'nodecolor': 'aqua',
+                 'edgecolor': 'lime',
+                 'shape': 'box'
+                 }
+
+    def __init__(self, app, **kw):
+        self.app = app
+        self.edges = {}
+        for key in self.defaults:
+            setattr(self, key, kw.get(key, self.defaults[key]))
+        assert self.output, "Please give an output file"
+        assert self.file, "Cannot save file!"
+        if os.path.exists(self.file):
+            self.graph = AGraph(self.file, directed=True)
+            for edge in self.graph.edges():
+                self.edges[(edge[0], edge[1])] = int(edge.attr['label'])
+        else:
+            self.graph = AGraph(directed=True)
+        self.graph.graph_attr['title'] = self.name
+        self.graph.graph_attr['label'] = self.name
+        self.graph.graph_attr['fontname'] = self.fontname
+        self.graph.graph_attr['fontcolor'] = self.fontcolor
+        self.graph.graph_attr['bgcolor'] = self.bgcolor
+        self.graph.node_attr['color'] = self.nodecolor
+        self.graph.node_attr['fontcolor'] = self.fontcolor
+        self.graph.node_attr[
+        self.graph.node_attr['shape'] = self.shape
+        self.graph.edge_attr['color'] = self.edgecolor
+        self.graph.edge_attr['fontcolor'] = self.fontcolor
+        
+    ### methods dealing with HTTP
+    def __call__(self, environ, start_response):
+        request = Request(environ)
+        import pdb; pdb.set_trace()
+        return self.app(environ, start_response)
+
+    def add(self, from_url, to_url):
+        if (from_url, to_url) in self.edges:
+            count = self.edges[(from_url, to_url)]
+            count += 1
+            self.edges[(from_url, to_url)] = count
+            edge = self.graph.get_edge(from_url, to_url)
+            edge.attr['label'] =  str(count)
+        else:
+            self.edges[(from_url, to_url)] = 1
+            self.graph.add_edge(from_url, to_url, label='1')
+
+        for url in from_url, to_url:
+            node = self.graph.get_node(url)
+            node.attr['label'] = url
+            node.attr['href'] = url
+
+        if self.file:
+            self.graph.write(self.file)
+        if self.output:
+            self.graph.draw(self.output, prog='dot')