Add CherryPy to third_party.

third_party/cherrypy/lib/jsontools.py

+import sys
+import cherrypy
+from cherrypy._cpcompat import basestring, ntou, json, json_encode, json_decode
+
+def json_processor(entity):
+    """Read application/json data into request.json."""
+    if not entity.headers.get(ntou("Content-Length"), ntou("")):
+        raise cherrypy.HTTPError(411)
+    
+    body = entity.fp.read()
+    try:
+        cherrypy.serving.request.json = json_decode(body.decode('utf-8'))
+    except ValueError:
+        raise cherrypy.HTTPError(400, 'Invalid JSON document')
+
+def json_in(content_type=[ntou('application/json'), ntou('text/javascript')],
+            force=True, debug=False, processor = json_processor):
+    """Add a processor to parse JSON request entities:
+    The default processor places the parsed data into request.json.
+
+    Incoming request entities which match the given content_type(s) will
+    be deserialized from JSON to the Python equivalent, and the result
+    stored at cherrypy.request.json. The 'content_type' argument may
+    be a Content-Type string or a list of allowable Content-Type strings.
+    
+    If the 'force' argument is True (the default), then entities of other
+    content types will not be allowed; "415 Unsupported Media Type" is
+    raised instead.
+    
+    Supply your own processor to use a custom decoder, or to handle the parsed
+    data differently.  The processor can be configured via
+    tools.json_in.processor or via the decorator method.
+
+    Note that the deserializer requires the client send a Content-Length
+    request header, or it will raise "411 Length Required". If for any
+    other reason the request entity cannot be deserialized from JSON,
+    it will raise "400 Bad Request: Invalid JSON document".
+    
+    You must be using Python 2.6 or greater, or have the 'simplejson'
+    package importable; otherwise, ValueError is raised during processing.
+    """
+    request = cherrypy.serving.request
+    if isinstance(content_type, basestring):
+        content_type = [content_type]
+    
+    if force:
+        if debug:
+            cherrypy.log('Removing body processors %s' %
+                         repr(request.body.processors.keys()), 'TOOLS.JSON_IN')
+        request.body.processors.clear()
+        request.body.default_proc = cherrypy.HTTPError(
+            415, 'Expected an entity of content type %s' %
+            ', '.join(content_type))
+    
+    for ct in content_type:
+        if debug:
+            cherrypy.log('Adding body processor for %s' % ct, 'TOOLS.JSON_IN')
+        request.body.processors[ct] = processor
+
+def json_handler(*args, **kwargs):
+    value = cherrypy.serving.request._json_inner_handler(*args, **kwargs)
+    return json_encode(value)
+
+def json_out(content_type='application/json', debug=False, handler=json_handler):
+    """Wrap request.handler to serialize its output to JSON. Sets Content-Type.
+    
+    If the given content_type is None, the Content-Type response header
+    is not set.
+
+    Provide your own handler to use a custom encoder.  For example
+    cherrypy.config['tools.json_out.handler'] = <function>, or
+    @json_out(handler=function).
+
+    You must be using Python 2.6 or greater, or have the 'simplejson'
+    package importable; otherwise, ValueError is raised during processing.
+    """
+    request = cherrypy.serving.request
+    if debug:
+        cherrypy.log('Replacing %s with JSON handler' % request.handler,
+                     'TOOLS.JSON_OUT')
+    request._json_inner_handler = request.handler
+    request.handler = handler
+    if content_type is not None:
+        if debug:
+            cherrypy.log('Setting Content-Type to %s' % content_type, 'TOOLS.JSON_OUT')
+        cherrypy.serving.response.headers['Content-Type'] = content_type
+