Commit | Line | Data |
---|---|---|
1864be32 | 1 | import inspect, math |
2a5a8ce7 | 2 | from . import req, dispatch, session, form, resp, proto |
b409a338 FT |
3 | |
4 | def wsgiwrap(callable): | |
5 | def wrapper(env, startreq): | |
7450e2fc | 6 | return dispatch.handleenv(env, startreq, callable) |
0f18b774 | 7 | wrapper.__wrapped__ = callable |
b409a338 | 8 | return wrapper |
d9979128 | 9 | |
bbdebbab | 10 | def formparams(callable): |
4d7795d9 FT |
11 | sig = inspect.signature(callable) |
12 | haskw = inspect.Parameter.VAR_KEYWORD in (par.kind for par in sig.parameters.values()) | |
bbdebbab | 13 | def wrapper(req): |
806b2bc4 | 14 | try: |
4d7795d9 | 15 | data = dict(form.formdata(req).items()) |
806b2bc4 FT |
16 | except IOError: |
17 | raise resp.httperror(400, "Invalid request", "Form data was incomplete") | |
4d7795d9 FT |
18 | |
19 | data["req"] = req | |
20 | if haskw: | |
21 | args = data | |
22 | else: | |
23 | args = {} | |
24 | for par in sig.parameters.values(): | |
25 | if par.name in data: | |
26 | args[par.name] = data[par.name] | |
27 | for par in sig.parameters.values(): | |
28 | if par.default is inspect.Parameter.empty and par.name not in args: | |
5a071401 | 29 | raise resp.httperror(400, "Missing parameter", ("The query parameter `", resp.h.code(spec.args[i]), "' is required but not supplied.")) |
bbdebbab | 30 | return callable(**args) |
0f18b774 | 31 | wrapper.__wrapped__ = callable |
bbdebbab FT |
32 | return wrapper |
33 | ||
612eb9f5 FT |
34 | class funplex(object): |
35 | def __init__(self, *funs, **nfuns): | |
36 | self.dir = {} | |
37 | self.dir.update(((self.unwrap(fun).__name__, fun) for fun in funs)) | |
38 | self.dir.update(nfuns) | |
39 | ||
40 | @staticmethod | |
24e514f0 FT |
41 | def unwrap(fun): |
42 | while hasattr(fun, "__wrapped__"): | |
43 | fun = fun.__wrapped__ | |
44 | return fun | |
612eb9f5 FT |
45 | |
46 | def __call__(self, req): | |
525d7938 | 47 | if req.pathinfo == "": |
6a9037cb FT |
48 | if "__root__" in self.dir: |
49 | return self.dir["__root__"](req) | |
525d7938 FT |
50 | raise resp.redirect(req.uriname + "/") |
51 | if req.pathinfo[:1] != "/": | |
52 | raise resp.notfound() | |
53 | p = req.pathinfo[1:] | |
54 | if p == "": | |
55 | p = "__index__" | |
56 | bi = 1 | |
57 | else: | |
58 | p = p.partition("/")[0] | |
59 | bi = len(p) + 1 | |
612eb9f5 | 60 | if p in self.dir: |
65e0a59d FT |
61 | sreq = req.shift(bi) |
62 | sreq.selfpath = req.pathinfo[1:] | |
63 | return self.dir[p](sreq) | |
525d7938 | 64 | raise resp.notfound() |
612eb9f5 FT |
65 | |
66 | def add(self, fun): | |
67 | self.dir[self.unwrap(fun).__name__] = fun | |
68 | return fun | |
69 | ||
70 | def name(self, name): | |
71 | def dec(fun): | |
72 | self.dir[name] = fun | |
73 | return fun | |
74 | return dec | |
525d7938 | 75 | |
9bc70dab | 76 | def persession(data=None): |
d9979128 FT |
77 | def dec(callable): |
78 | def wrapper(req): | |
79 | sess = session.get(req) | |
80 | if callable not in sess: | |
81 | if data is None: | |
82 | sess[callable] = callable() | |
83 | else: | |
84 | if data not in sess: | |
85 | sess[data] = data() | |
86 | sess[callable] = callable(data) | |
87 | return sess[callable].handle(req) | |
0f18b774 | 88 | wrapper.__wrapped__ = callable |
d9979128 FT |
89 | return wrapper |
90 | return dec | |
d1f70c6c | 91 | |
77dd732a FT |
92 | class preiter(object): |
93 | __slots__ = ["bk", "bki", "_next"] | |
94 | end = object() | |
95 | def __init__(self, real): | |
96 | self.bk = real | |
97 | self.bki = iter(real) | |
98 | self._next = None | |
a7a09080 | 99 | self.__next__() |
77dd732a FT |
100 | |
101 | def __iter__(self): | |
102 | return self | |
103 | ||
a7a09080 | 104 | def __next__(self): |
77dd732a FT |
105 | if self._next is self.end: |
106 | raise StopIteration() | |
107 | ret = self._next | |
108 | try: | |
109 | self._next = next(self.bki) | |
110 | except StopIteration: | |
111 | self._next = self.end | |
112 | return ret | |
113 | ||
114 | def close(self): | |
115 | if hasattr(self.bk, "close"): | |
116 | self.bk.close() | |
117 | ||
118 | def pregen(callable): | |
119 | def wrapper(*args, **kwargs): | |
120 | return preiter(callable(*args, **kwargs)) | |
0f18b774 | 121 | wrapper.__wrapped__ = callable |
77dd732a FT |
122 | return wrapper |
123 | ||
62113fc6 FT |
124 | def stringwrap(charset): |
125 | def dec(callable): | |
126 | @pregen | |
127 | def wrapper(*args, **kwargs): | |
128 | for string in callable(*args, **kwargs): | |
129 | yield string.encode(charset) | |
130 | wrapper.__wrapped__ = callable | |
131 | return wrapper | |
132 | return dec | |
133 | ||
d1f70c6c FT |
134 | class sessiondata(object): |
135 | @classmethod | |
9bc70dab | 136 | def get(cls, req, create=True): |
d1f70c6c FT |
137 | sess = cls.sessdb().get(req) |
138 | with sess.lock: | |
139 | try: | |
140 | return sess[cls] | |
141 | except KeyError: | |
8f911ff6 FT |
142 | if not create: |
143 | return None | |
5b35322c | 144 | ret = cls(req, sess) |
d1f70c6c FT |
145 | sess[cls] = ret |
146 | return ret | |
147 | ||
148 | @classmethod | |
149 | def sessdb(cls): | |
1f61bf31 | 150 | return session.default.val |
d1f70c6c | 151 | |
f13b8f5a FT |
152 | class autodirty(sessiondata): |
153 | @classmethod | |
154 | def get(cls, req): | |
d13a1a57 | 155 | ret = super().get(req) |
f13b8f5a FT |
156 | if "_is_dirty" not in ret.__dict__: |
157 | ret.__dict__["_is_dirty"] = False | |
617b21df | 158 | return ret |
f13b8f5a | 159 | |
d1f70c6c | 160 | def sessfrozen(self): |
f13b8f5a | 161 | self.__dict__["_is_dirty"] = False |
d1f70c6c FT |
162 | |
163 | def sessdirty(self): | |
f13b8f5a | 164 | return self._is_dirty |
d1f70c6c FT |
165 | |
166 | def __setattr__(self, name, value): | |
a4ad119b | 167 | super().__setattr__(name, value) |
f13b8f5a FT |
168 | if "_is_dirty" in self.__dict__: |
169 | self.__dict__["_is_dirty"] = True | |
d1f70c6c FT |
170 | |
171 | def __delattr__(self, name): | |
d13a1a57 | 172 | super().__delattr__(name, value) |
f13b8f5a FT |
173 | if "_is_dirty" in self.__dict__: |
174 | self.__dict__["_is_dirty"] = True | |
3b9bc700 FT |
175 | |
176 | class manudirty(object): | |
177 | def __init__(self, *args, **kwargs): | |
d13a1a57 | 178 | super().__init__(*args, **kwargs) |
3b9bc700 FT |
179 | self.__dirty = False |
180 | ||
181 | def sessfrozen(self): | |
182 | self.__dirty = False | |
183 | ||
184 | def sessdirty(self): | |
185 | return self.__dirty | |
186 | ||
187 | def dirty(self): | |
188 | self.__dirty = True | |
df5f7868 FT |
189 | |
190 | class specslot(object): | |
191 | __slots__ = ["nm", "idx", "dirty"] | |
192 | unbound = object() | |
193 | ||
194 | def __init__(self, nm, idx, dirty): | |
195 | self.nm = nm | |
196 | self.idx = idx | |
197 | self.dirty = dirty | |
198 | ||
199 | @staticmethod | |
200 | def slist(ins): | |
201 | # Avoid calling __getattribute__ | |
202 | return specdirty.__sslots__.__get__(ins, type(ins)) | |
203 | ||
204 | def __get__(self, ins, cls): | |
205 | val = self.slist(ins)[self.idx] | |
206 | if val is specslot.unbound: | |
207 | raise AttributeError("specslot %r is unbound" % self.nm) | |
208 | return val | |
209 | ||
210 | def __set__(self, ins, val): | |
211 | self.slist(ins)[self.idx] = val | |
212 | if self.dirty: | |
213 | ins.dirty() | |
214 | ||
215 | def __delete__(self, ins): | |
216 | self.slist(ins)[self.idx] = specslot.unbound | |
217 | ins.dirty() | |
218 | ||
219 | class specclass(type): | |
220 | def __init__(self, name, bases, tdict): | |
f605aaf2 | 221 | super().__init__(name, bases, tdict) |
df5f7868 FT |
222 | sslots = set() |
223 | dslots = set() | |
224 | for cls in self.__mro__: | |
225 | css = cls.__dict__.get("__saveslots__", ()) | |
226 | sslots.update(css) | |
227 | dslots.update(cls.__dict__.get("__dirtyslots__", css)) | |
228 | self.__sslots_l__ = list(sslots) | |
229 | self.__sslots_a__ = list(sslots | dslots) | |
230 | for i, slot in enumerate(self.__sslots_a__): | |
231 | setattr(self, slot, specslot(slot, i, slot in dslots)) | |
232 | ||
f605aaf2 | 233 | class specdirty(sessiondata, metaclass=specclass): |
df5f7868 FT |
234 | __slots__ = ["session", "__sslots__", "_is_dirty"] |
235 | ||
236 | def __specinit__(self): | |
237 | pass | |
238 | ||
239 | @staticmethod | |
240 | def __new__(cls, req, sess): | |
f605aaf2 | 241 | self = super().__new__(cls) |
df5f7868 FT |
242 | self.session = sess |
243 | self.__sslots__ = [specslot.unbound] * len(cls.__sslots_a__) | |
244 | self.__specinit__() | |
245 | self._is_dirty = False | |
246 | return self | |
247 | ||
248 | def __getnewargs__(self): | |
249 | return (None, self.session) | |
250 | ||
251 | def dirty(self): | |
252 | self._is_dirty = True | |
253 | ||
254 | def sessfrozen(self): | |
255 | self._is_dirty = False | |
256 | ||
257 | def sessdirty(self): | |
258 | return self._is_dirty | |
259 | ||
260 | def __getstate__(self): | |
261 | ret = {} | |
262 | for nm, val in zip(type(self).__sslots_a__, specslot.slist(self)): | |
263 | if val is specslot.unbound: | |
264 | ret[nm] = False, None | |
265 | else: | |
266 | ret[nm] = True, val | |
267 | return ret | |
268 | ||
269 | def __setstate__(self, st): | |
270 | ss = specslot.slist(self) | |
271 | for i, nm in enumerate(type(self).__sslots_a__): | |
272 | bound, val = st.pop(nm, (False, None)) | |
df5f7868 FT |
273 | if not bound: |
274 | ss[i] = specslot.unbound | |
275 | else: | |
276 | ss[i] = val | |
1864be32 FT |
277 | |
278 | def datecheck(req, mtime): | |
279 | if "If-Modified-Since" in req.ihead: | |
280 | rtime = proto.phttpdate(req.ihead["If-Modified-Since"]) | |
438b6207 | 281 | if rtime is not None and rtime >= math.floor(mtime): |
1864be32 FT |
282 | raise resp.unmodified() |
283 | req.ohead["Last-Modified"] = proto.httpdate(mtime) |