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 stringwrap(charset):
12 def wrapper(*args, **kwargs):
13 bk = callable(*args, **kwargs)
15 yield string.encode(charset)
19 def formparams(callable):
20 spec = inspect.getargspec(callable)
22 data = form.formdata(req)
23 args = dict(data.items())
26 for arg in list(args):
27 if arg not in spec.args:
29 for i in range(len(spec.args) - (len(spec.defaults) if spec.defaults else 0)):
30 if spec.args[i] not in args:
31 raise resp.httperror(400, "Missing parameter", ("The query parameter `", resp.h.code(spec.args[i]), "' is required but not supplied."))
32 return callable(**args)
33 wrapper.__wrapped__ = callable
36 class funplex(object):
37 def __init__(self, *funs, **nfuns):
39 self.dir.update(((self.unwrap(fun).__name__, fun) for fun in funs))
40 self.dir.update(nfuns)
44 while hasattr(fun, "__wrapped__"):
48 def __call__(self, req):
49 if req.pathinfo == "":
50 raise resp.redirect(req.uriname + "/")
51 if req.pathinfo[:1] != "/":
58 p = p.partition("/")[0]
61 return self.dir[p](req.shift(bi))
65 self.dir[self.unwrap(fun).__name__] = fun
74 def persession(data=None):
77 sess = session.get(req)
78 if callable not in sess:
80 sess[callable] = callable()
84 sess[callable] = callable(data)
85 return sess[callable].handle(req)
86 wrapper.__wrapped__ = callable
90 class preiter(object):
91 __slots__ = ["bk", "bki", "_next"]
93 def __init__(self, real):
103 if self._next is self.end:
104 raise StopIteration()
107 self._next = next(self.bki)
108 except StopIteration:
109 self._next = self.end
113 if hasattr(self.bk, "close"):
116 def pregen(callable):
117 def wrapper(*args, **kwargs):
118 return preiter(callable(*args, **kwargs))
119 wrapper.__wrapped__ = callable
122 class sessiondata(object):
124 def get(cls, req, create=True):
125 sess = cls.sessdb().get(req)
138 return session.default.val
140 class autodirty(sessiondata):
143 ret = super().get(req)
144 if "_is_dirty" not in ret.__dict__:
145 ret.__dict__["_is_dirty"] = False
148 def sessfrozen(self):
149 self.__dict__["_is_dirty"] = False
152 return self._is_dirty
154 def __setattr__(self, name, value):
155 super().__setattr__(name, value)
156 if "_is_dirty" in self.__dict__:
157 self.__dict__["_is_dirty"] = True
159 def __delattr__(self, name):
160 super().__delattr__(name, value)
161 if "_is_dirty" in self.__dict__:
162 self.__dict__["_is_dirty"] = True
164 class manudirty(object):
165 def __init__(self, *args, **kwargs):
166 super().__init__(*args, **kwargs)
169 def sessfrozen(self):
178 class specslot(object):
179 __slots__ = ["nm", "idx", "dirty"]
182 def __init__(self, nm, idx, dirty):
189 # Avoid calling __getattribute__
190 return specdirty.__sslots__.__get__(ins, type(ins))
192 def __get__(self, ins, cls):
193 val = self.slist(ins)[self.idx]
194 if val is specslot.unbound:
195 raise AttributeError("specslot %r is unbound" % self.nm)
198 def __set__(self, ins, val):
199 self.slist(ins)[self.idx] = val
203 def __delete__(self, ins):
204 self.slist(ins)[self.idx] = specslot.unbound
207 class specclass(type):
208 def __init__(self, name, bases, tdict):
209 super().__init__(name, bases, tdict)
212 for cls in self.__mro__:
213 css = cls.__dict__.get("__saveslots__", ())
215 dslots.update(cls.__dict__.get("__dirtyslots__", css))
216 self.__sslots_l__ = list(sslots)
217 self.__sslots_a__ = list(sslots | dslots)
218 for i, slot in enumerate(self.__sslots_a__):
219 setattr(self, slot, specslot(slot, i, slot in dslots))
221 class specdirty(sessiondata, metaclass=specclass):
222 __slots__ = ["session", "__sslots__", "_is_dirty"]
224 def __specinit__(self):
228 def __new__(cls, req, sess):
229 self = super().__new__(cls)
231 self.__sslots__ = [specslot.unbound] * len(cls.__sslots_a__)
233 self._is_dirty = False
236 def __getnewargs__(self):
237 return (None, self.session)
240 self._is_dirty = True
242 def sessfrozen(self):
243 self._is_dirty = False
246 return self._is_dirty
248 def __getstate__(self):
250 for nm, val in zip(type(self).__sslots_a__, specslot.slist(self)):
251 if val is specslot.unbound:
252 ret[nm] = False, None
257 def __setstate__(self, st):
258 ss = specslot.slist(self)
259 for i, nm in enumerate(type(self).__sslots_a__):
260 bound, val = st.pop(nm, (False, None))
262 ss[i] = specslot.unbound
266 def datecheck(req, mtime):
267 if "If-Modified-Since" in req.ihead:
268 rtime = proto.phttpdate(req.ihead["If-Modified-Since"])
269 if rtime >= math.floor(mtime):
270 raise resp.unmodified()
271 req.ohead["Last-Modified"] = proto.httpdate(mtime)