2 from . import req, dispatch, session, form, resp, proto
4 def wsgiwrap(callable):
5 def wrapper(env, startreq):
6 return dispatch.handleenv(env, startreq, callable)
7 wrapper.__wrapped__ = callable
10 def formparams(callable):
11 sig = inspect.signature(callable)
12 haskw = inspect.Parameter.VAR_KEYWORD in (par.kind for par in sig.parameters.values())
15 return nm.replace("-", "_")
19 data = dict((mangle(key), val) for (key, val)
20 in form.formdata(req).items())
22 raise resp.httperror(400, "Invalid request", "Form data was incomplete")
29 for par in sig.parameters.values():
31 args[par.name] = data[par.name]
32 for par in sig.parameters.values():
33 if par.kind is inspect.Parameter.VAR_KEYWORD:
35 if par.default is inspect.Parameter.empty and par.name not in args:
36 raise resp.httperror(400, "Missing parameter", ("The query parameter `", resp.h.code(par.name), "' is required but not supplied."))
37 return callable(**args)
39 wrapper.__wrapped__ = callable
42 class funplex(object):
43 def __init__(self, *funs, **nfuns):
45 self.dir.update(((self.unwrap(fun).__name__, fun) for fun in funs))
46 self.dir.update(nfuns)
50 while hasattr(fun, "__wrapped__"):
54 def __call__(self, req):
55 if req.pathinfo == "":
56 if "__root__" in self.dir:
57 return self.dir["__root__"](req)
58 raise resp.redirect(req.uriname + "/")
59 if req.pathinfo[:1] != "/":
66 p = p.partition("/")[0]
70 sreq.selfpath = req.pathinfo[1:]
71 return self.dir[p](sreq)
75 self.dir[self.unwrap(fun).__name__] = fun
84 def persession(data=None):
87 sess = session.get(req)
88 if callable not in sess:
90 sess[callable] = callable()
94 sess[callable] = callable(data)
95 return sess[callable].handle(req)
96 wrapper.__wrapped__ = callable
100 class preiter(object):
101 __slots__ = ["bk", "bki", "_next"]
103 def __init__(self, real):
105 self.bki = iter(real)
113 if self._next is self.end:
114 raise StopIteration()
117 self._next = next(self.bki)
118 except StopIteration:
119 self._next = self.end
123 if hasattr(self.bk, "close"):
126 def pregen(callable):
127 def wrapper(*args, **kwargs):
128 return preiter(callable(*args, **kwargs))
129 wrapper.__wrapped__ = callable
132 def stringwrap(charset):
135 def wrapper(*args, **kwargs):
136 for string in callable(*args, **kwargs):
137 yield string.encode(charset)
138 wrapper.__wrapped__ = callable
142 class sessiondata(object):
144 def get(cls, req, create=True):
145 sess = cls.sessdb().get(req)
158 return session.default.val
160 class autodirty(sessiondata):
163 ret = super().get(req)
164 if "_is_dirty" not in ret.__dict__:
165 ret.__dict__["_is_dirty"] = False
168 def sessfrozen(self):
169 self.__dict__["_is_dirty"] = False
172 return self._is_dirty
174 def __setattr__(self, name, value):
175 super().__setattr__(name, value)
176 if "_is_dirty" in self.__dict__:
177 self.__dict__["_is_dirty"] = True
179 def __delattr__(self, name):
180 super().__delattr__(name, value)
181 if "_is_dirty" in self.__dict__:
182 self.__dict__["_is_dirty"] = True
184 class manudirty(object):
185 def __init__(self, *args, **kwargs):
186 super().__init__(*args, **kwargs)
189 def sessfrozen(self):
198 class specslot(object):
199 __slots__ = ["nm", "idx", "dirty"]
202 def __init__(self, nm, idx, dirty):
209 # Avoid calling __getattribute__
210 return specdirty.__sslots__.__get__(ins, type(ins))
212 def __get__(self, ins, cls):
213 val = self.slist(ins)[self.idx]
214 if val is specslot.unbound:
215 raise AttributeError("specslot %r is unbound" % self.nm)
218 def __set__(self, ins, val):
219 self.slist(ins)[self.idx] = val
223 def __delete__(self, ins):
224 self.slist(ins)[self.idx] = specslot.unbound
227 class specclass(type):
228 def __init__(self, name, bases, tdict):
229 super().__init__(name, bases, tdict)
232 for cls in self.__mro__:
233 css = cls.__dict__.get("__saveslots__", ())
235 dslots.update(cls.__dict__.get("__dirtyslots__", css))
236 self.__sslots_l__ = list(sslots)
237 self.__sslots_a__ = list(sslots | dslots)
238 for i, slot in enumerate(self.__sslots_a__):
239 setattr(self, slot, specslot(slot, i, slot in dslots))
241 class specdirty(sessiondata, metaclass=specclass):
242 __slots__ = ["session", "__sslots__", "_is_dirty"]
244 def __specinit__(self):
248 def __new__(cls, req, sess):
249 self = super().__new__(cls)
251 self.__sslots__ = [specslot.unbound] * len(cls.__sslots_a__)
253 self._is_dirty = False
256 def __getnewargs__(self):
257 return (None, self.session)
260 self._is_dirty = True
262 def sessfrozen(self):
263 self._is_dirty = False
266 return self._is_dirty
268 def __getstate__(self):
270 for nm, val in zip(type(self).__sslots_a__, specslot.slist(self)):
271 if val is specslot.unbound:
272 ret[nm] = False, None
277 def __setstate__(self, st):
278 ss = specslot.slist(self)
279 for i, nm in enumerate(type(self).__sslots_a__):
280 bound, val = st.pop(nm, (False, None))
282 ss[i] = specslot.unbound
286 def datecheck(req, mtime):
287 if "If-Modified-Since" in req.ihead:
288 rtime = proto.phttpdate(req.ihead["If-Modified-Since"])
289 if rtime is not None and rtime >= math.floor(mtime):
290 raise resp.unmodified()
291 req.ohead["Last-Modified"] = proto.httpdate(mtime)