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 spec = inspect.getargspec(callable)
13 data = form.formdata(req)
14 args = dict(data.items())
17 for arg in list(args):
18 if arg not in spec.args:
20 for i in range(len(spec.args) - (len(spec.defaults) if spec.defaults else 0)):
21 if spec.args[i] not in args:
22 raise resp.httperror(400, "Missing parameter", ("The query parameter `", resp.h.code(spec.args[i]), "' is required but not supplied."))
23 return callable(**args)
24 wrapper.__wrapped__ = callable
27 class funplex(object):
28 def __init__(self, *funs, **nfuns):
30 self.dir.update(((self.unwrap(fun).__name__, fun) for fun in funs))
31 self.dir.update(nfuns)
35 while hasattr(fun, "__wrapped__"):
39 def __call__(self, req):
40 if req.pathinfo == "":
41 raise resp.redirect(req.uriname + "/")
42 if req.pathinfo[:1] != "/":
49 p = p.partition("/")[0]
53 sreq.selfpath = req.pathinfo[1:]
54 return self.dir[p](sreq)
58 self.dir[self.unwrap(fun).__name__] = fun
67 def persession(data=None):
70 sess = session.get(req)
71 if callable not in sess:
73 sess[callable] = callable()
77 sess[callable] = callable(data)
78 return sess[callable].handle(req)
79 wrapper.__wrapped__ = callable
83 class preiter(object):
84 __slots__ = ["bk", "bki", "_next"]
86 def __init__(self, real):
96 if self._next is self.end:
100 self._next = next(self.bki)
101 except StopIteration:
102 self._next = self.end
106 if hasattr(self.bk, "close"):
109 def pregen(callable):
110 def wrapper(*args, **kwargs):
111 return preiter(callable(*args, **kwargs))
112 wrapper.__wrapped__ = callable
115 def stringwrap(charset):
118 def wrapper(*args, **kwargs):
119 for string in callable(*args, **kwargs):
120 yield string.encode(charset)
121 wrapper.__wrapped__ = callable
125 class sessiondata(object):
127 def get(cls, req, create=True):
128 sess = cls.sessdb().get(req)
141 return session.default.val
143 class autodirty(sessiondata):
146 ret = super().get(req)
147 if "_is_dirty" not in ret.__dict__:
148 ret.__dict__["_is_dirty"] = False
151 def sessfrozen(self):
152 self.__dict__["_is_dirty"] = False
155 return self._is_dirty
157 def __setattr__(self, name, value):
158 super().__setattr__(name, value)
159 if "_is_dirty" in self.__dict__:
160 self.__dict__["_is_dirty"] = True
162 def __delattr__(self, name):
163 super().__delattr__(name, value)
164 if "_is_dirty" in self.__dict__:
165 self.__dict__["_is_dirty"] = True
167 class manudirty(object):
168 def __init__(self, *args, **kwargs):
169 super().__init__(*args, **kwargs)
172 def sessfrozen(self):
181 class specslot(object):
182 __slots__ = ["nm", "idx", "dirty"]
185 def __init__(self, nm, idx, dirty):
192 # Avoid calling __getattribute__
193 return specdirty.__sslots__.__get__(ins, type(ins))
195 def __get__(self, ins, cls):
196 val = self.slist(ins)[self.idx]
197 if val is specslot.unbound:
198 raise AttributeError("specslot %r is unbound" % self.nm)
201 def __set__(self, ins, val):
202 self.slist(ins)[self.idx] = val
206 def __delete__(self, ins):
207 self.slist(ins)[self.idx] = specslot.unbound
210 class specclass(type):
211 def __init__(self, name, bases, tdict):
212 super().__init__(name, bases, tdict)
215 for cls in self.__mro__:
216 css = cls.__dict__.get("__saveslots__", ())
218 dslots.update(cls.__dict__.get("__dirtyslots__", css))
219 self.__sslots_l__ = list(sslots)
220 self.__sslots_a__ = list(sslots | dslots)
221 for i, slot in enumerate(self.__sslots_a__):
222 setattr(self, slot, specslot(slot, i, slot in dslots))
224 class specdirty(sessiondata, metaclass=specclass):
225 __slots__ = ["session", "__sslots__", "_is_dirty"]
227 def __specinit__(self):
231 def __new__(cls, req, sess):
232 self = super().__new__(cls)
234 self.__sslots__ = [specslot.unbound] * len(cls.__sslots_a__)
236 self._is_dirty = False
239 def __getnewargs__(self):
240 return (None, self.session)
243 self._is_dirty = True
245 def sessfrozen(self):
246 self._is_dirty = False
249 return self._is_dirty
251 def __getstate__(self):
253 for nm, val in zip(type(self).__sslots_a__, specslot.slist(self)):
254 if val is specslot.unbound:
255 ret[nm] = False, None
260 def __setstate__(self, st):
261 ss = specslot.slist(self)
262 for i, nm in enumerate(type(self).__sslots_a__):
263 bound, val = st.pop(nm, (False, None))
265 ss[i] = specslot.unbound
269 def datecheck(req, mtime):
270 if "If-Modified-Since" in req.ihead:
271 rtime = proto.phttpdate(req.ihead["If-Modified-Since"])
272 if rtime is not None and rtime >= math.floor(mtime):
273 raise resp.unmodified()
274 req.ohead["Last-Modified"] = proto.httpdate(mtime)