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"""Self documenting XML-RPC Server.
This module can be used to create XML-RPC servers that
serve pydoc-style documentation in response to HTTP
GET requests. This documentation is dynamically generated
based on the functions and methods registered with the
server.
This module is built upon the pydoc and SimpleXMLRPCServer
modules.
"""
import pydoc
import inspect
import re
import sys
from SimpleXMLRPCServer import (SimpleXMLRPCServer,
SimpleXMLRPCRequestHandler,
CGIXMLRPCRequestHandler,
resolve_dotted_attribute)
def _html_escape_quote(s):
s = s.replace("&", "&") # Must be done first!
s = s.replace("<", "<")
s = s.replace(">", ">")
s = s.replace('"', """)
s = s.replace('\'', "'")
return s
class ServerHTMLDoc(pydoc.HTMLDoc):
"""Class used to generate pydoc HTML document for a server"""
def markup(self, text, escape=None, funcs={}, classes={}, methods={}):
"""Mark up some plain text, given a context of symbols to look for.
Each context dictionary maps object names to anchor names."""
escape = escape or self.escape
results = []
here = 0
# XXX Note that this regular expression does not allow for the
# hyperlinking of arbitrary strings being used as method
# names. Only methods with names consisting of word characters
# and '.'s are hyperlinked.
pattern = re.compile(r'\b((http|ftp)://\S+[\w/]|'
r'RFC[- ]?(\d+)|'
r'PEP[- ]?(\d+)|'
r'(self\.)?((?:\w|\.)+))\b')
while 1:
match = pattern.search(text, here)
if not match: break
start, end = match.span()
results.append(escape(text[here:start]))
all, scheme, rfc, pep, selfdot, name = match.groups()
if scheme:
url = escape(all).replace('"', '"')
results.append('<a href="%s">%s</a>' % (url, url))
elif rfc:
url = 'http://www.rfc-editor.org/rfc/rfc%d.txt' % int(rfc)
results.append('<a href="%s">%s</a>' % (url, escape(all)))
elif pep:
url = 'http://www.python.org/dev/peps/pep-%04d/' % int(pep)
results.append('<a href="%s">%s</a>' % (url, escape(all)))
elif text[end:end+1] == '(':
results.append(self.namelink(name, methods, funcs, classes))
elif selfdot:
results.append('self.<strong>%s</strong>' % name)
else:
results.append(self.namelink(name, classes))
here = end
results.append(escape(text[here:]))
return ''.join(results)
def docroutine(self, object, name, mod=None,
funcs={}, classes={}, methods={}, cl=None):
"""Produce HTML documentation for a function or method object."""
anchor = (cl and cl.__name__ or '') + '-' + name
note = ''
title = '<a name="%s"><strong>%s</strong></a>' % (
self.escape(anchor), self.escape(name))
if inspect.ismethod(object):
args, varargs, varkw, defaults = inspect.getargspec(object.im_func)
# exclude the argument bound to the instance, it will be
# confusing to the non-Python user
argspec = inspect.formatargspec (
args[1:],
varargs,
varkw,
defaults,
formatvalue=self.formatvalue
)
elif inspect.isfunction(object):
args, varargs, varkw, defaults = inspect.getargspec(object)
argspec = inspect.formatargspec(
args, varargs, varkw, defaults, formatvalue=self.formatvalue)
else:
argspec = '(...)'
if isinstance(object, tuple):
argspec = object[0] or argspec
docstring = object[1] or ""
else:
docstring = pydoc.getdoc(object)
decl = title + argspec + (note and self.grey(
'<font face="helvetica, arial">%s</font>' % note))
doc = self.markup(
docstring, self.preformat, funcs, classes, methods)
doc = doc and '<dd><tt>%s</tt></dd>' % doc
return '<dl><dt>%s</dt>%s</dl>\n' % (decl, doc)
def docserver(self, server_name, package_documentation, methods):
"""Produce HTML documentation for an XML-RPC server."""
fdict = {}
for key, value in methods.items():
fdict[key] = '#-' + key
fdict[value] = fdict[key]
server_name = self.escape(server_name)
head = '<big><big><strong>%s</strong></big></big>' % server_name
result = self.heading(head, '#ffffff', '#7799ee')
doc = self.markup(package_documentation, self.preformat, fdict)
doc = doc and '<tt>%s</tt>' % doc
result = result + '<p>%s</p>\n' % doc
contents = []
method_items = sorted(methods.items())
for key, value in method_items:
contents.append(self.docroutine(value, key, funcs=fdict))
result = result + self.bigsection(
'Methods', '#ffffff', '#eeaa77', pydoc.join(contents))
return result
class XMLRPCDocGenerator:
"""Generates documentation for an XML-RPC server.
This class is designed as mix-in and should not
be constructed directly.
"""
def __init__(self):
# setup variables used for HTML documentation
self.server_name = 'XML-RPC Server Documentation'
self.server_documentation = \
"This server exports the following methods through the XML-RPC "\
"protocol."
self.server_title = 'XML-RPC Server Documentation'
def set_server_title(self, server_title):
"""Set the HTML title of the generated server documentation"""
self.server_title = server_title
def set_server_name(self, server_name):
"""Set the name of the generated HTML server documentation"""
self.server_name = server_name
def set_server_documentation(self, server_documentation):
"""Set the documentation string for the entire server."""
self.server_documentation = server_documentation
def generate_html_documentation(self):
"""generate_html_documentation() => html documentation for the server
Generates HTML documentation for the server using introspection for
installed functions and instances that do not implement the
_dispatch method. Alternatively, instances can choose to implement
the _get_method_argstring(method_name) method to provide the
argument string used in the documentation and the
_methodHelp(method_name) method to provide the help text used
in the documentation."""
methods = {}
for method_name in self.system_listMethods():
if method_name in self.funcs:
method = self.funcs[method_name]
elif self.instance is not None:
method_info = [None, None] # argspec, documentation
if hasattr(self.instance, '_get_method_argstring'):
method_info[0] = self.instance._get_method_argstring(method_name)
if hasattr(self.instance, '_methodHelp'):
method_info[1] = self.instance._methodHelp(method_name)
method_info = tuple(method_info)
if method_info != (None, None):
method = method_info
elif not hasattr(self.instance, '_dispatch'):
try:
method = resolve_dotted_attribute(
self.instance,
method_name
)
except AttributeError:
method = method_info
else:
method = method_info
else:
assert 0, "Could not find method in self.functions and no "\
"instance installed"
methods[method_name] = method
documenter = ServerHTMLDoc()
documentation = documenter.docserver(
self.server_name,
self.server_documentation,
methods
)
title = _html_escape_quote(self.server_title)
return documenter.page(title, documentation)
class DocXMLRPCRequestHandler(SimpleXMLRPCRequestHandler):
"""XML-RPC and documentation request handler class.
Handles all HTTP POST requests and attempts to decode them as
XML-RPC requests.
Handles all HTTP GET requests and interprets them as requests
for documentation.
"""
def do_GET(self):
"""Handles the HTTP GET request.
Interpret all HTTP GET requests as requests for server
documentation.
"""
# Check that the path is legal
if not self.is_rpc_path_valid():
self.report_404()
return
response = self.server.generate_html_documentation()
self.send_response(200)
self.send_header("Content-type", "text/html")
self.send_header("Content-length", str(len(response)))
self.end_headers()
self.wfile.write(response)
class DocXMLRPCServer( SimpleXMLRPCServer,
XMLRPCDocGenerator):
"""XML-RPC and HTML documentation server.
Adds the ability to serve server documentation to the capabilities
of SimpleXMLRPCServer.
"""
def __init__(self, addr, requestHandler=DocXMLRPCRequestHandler,
logRequests=1, allow_none=False, encoding=None,
bind_and_activate=True):
SimpleXMLRPCServer.__init__(self, addr, requestHandler, logRequests,
allow_none, encoding, bind_and_activate)
XMLRPCDocGenerator.__init__(self)
class DocCGIXMLRPCRequestHandler( CGIXMLRPCRequestHandler,
XMLRPCDocGenerator):
"""Handler for XML-RPC data and documentation requests passed through
CGI"""
def handle_get(self):
"""Handles the HTTP GET request.
Interpret all HTTP GET requests as requests for server
documentation.
"""
response = self.generate_html_documentation()
print 'Content-Type: text/html'
print 'Content-Length: %d' % len(response)
print
sys.stdout.write(response)
def __init__(self):
CGIXMLRPCRequestHandler.__init__(self)
XMLRPCDocGenerator.__init__(self)