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(): | |
319f6448 FT |
28 | if par.kind is inspect.Parameter.VAR_KEYWORD: |
29 | continue | |
4d7795d9 | 30 | if par.default is inspect.Parameter.empty and par.name not in args: |
977d28bd | 31 | raise resp.httperror(400, "Missing parameter", ("The query parameter `", resp.h.code(par.name), "' is required but not supplied.")) |
bbdebbab | 32 | return callable(**args) |
0f18b774 | 33 | wrapper.__wrapped__ = callable |
bbdebbab FT |
34 | return wrapper |
35 | ||
612eb9f5 FT |
36 | class funplex(object): |
37 | def __init__(self, *funs, **nfuns): | |
38 | self.dir = {} | |
39 | self.dir.update(((self.unwrap(fun).__name__, fun) for fun in funs)) | |
40 | self.dir.update(nfuns) | |
41 | ||
42 | @staticmethod | |
24e514f0 FT |
43 | def unwrap(fun): |
44 | while hasattr(fun, "__wrapped__"): | |
45 | fun = fun.__wrapped__ | |
46 | return fun | |
612eb9f5 FT |
47 | |
48 | def __call__(self, req): | |
525d7938 | 49 | if req.pathinfo == "": |
6a9037cb FT |
50 | if "__root__" in self.dir: |
51 | return self.dir["__root__"](req) | |
525d7938 FT |
52 | raise resp.redirect(req.uriname + "/") |
53 | if req.pathinfo[:1] != "/": | |
54 | raise resp.notfound() | |
55 | p = req.pathinfo[1:] | |
56 | if p == "": | |
57 | p = "__index__" | |
58 | bi = 1 | |
59 | else: | |
60 | p = p.partition("/")[0] | |
61 | bi = len(p) + 1 | |
612eb9f5 | 62 | if p in self.dir: |
65e0a59d FT |
63 | sreq = req.shift(bi) |
64 | sreq.selfpath = req.pathinfo[1:] | |
65 | return self.dir[p](sreq) | |
525d7938 | 66 | raise resp.notfound() |
612eb9f5 FT |
67 | |
68 | def add(self, fun): | |
69 | self.dir[self.unwrap(fun).__name__] = fun | |
70 | return fun | |
71 | ||
72 | def name(self, name): | |
73 | def dec(fun): | |
74 | self.dir[name] = fun | |
75 | return fun | |
76 | return dec | |
525d7938 | 77 | |
9bc70dab | 78 | def persession(data=None): |
d9979128 FT |
79 | def dec(callable): |
80 | def wrapper(req): | |
81 | sess = session.get(req) | |
82 | if callable not in sess: | |
83 | if data is None: | |
84 | sess[callable] = callable() | |
85 | else: | |
86 | if data not in sess: | |
87 | sess[data] = data() | |
88 | sess[callable] = callable(data) | |
89 | return sess[callable].handle(req) | |
0f18b774 | 90 | wrapper.__wrapped__ = callable |
d9979128 FT |
91 | return wrapper |
92 | return dec | |
d1f70c6c | 93 | |
77dd732a FT |
94 | class preiter(object): |
95 | __slots__ = ["bk", "bki", "_next"] | |
96 | end = object() | |
97 | def __init__(self, real): | |
98 | self.bk = real | |
99 | self.bki = iter(real) | |
100 | self._next = None | |
a7a09080 | 101 | self.__next__() |
77dd732a FT |
102 | |
103 | def __iter__(self): | |
104 | return self | |
105 | ||
a7a09080 | 106 | def __next__(self): |
77dd732a FT |
107 | if self._next is self.end: |
108 | raise StopIteration() | |
109 | ret = self._next | |
110 | try: | |
111 | self._next = next(self.bki) | |
112 | except StopIteration: | |
113 | self._next = self.end | |
114 | return ret | |
115 | ||
116 | def close(self): | |
117 | if hasattr(self.bk, "close"): | |
118 | self.bk.close() | |
119 | ||
120 | def pregen(callable): | |
121 | def wrapper(*args, **kwargs): | |
122 | return preiter(callable(*args, **kwargs)) | |
0f18b774 | 123 | wrapper.__wrapped__ = callable |
77dd732a FT |
124 | return wrapper |
125 | ||
62113fc6 FT |
126 | def stringwrap(charset): |
127 | def dec(callable): | |
128 | @pregen | |
129 | def wrapper(*args, **kwargs): | |
130 | for string in callable(*args, **kwargs): | |
131 | yield string.encode(charset) | |
132 | wrapper.__wrapped__ = callable | |
133 | return wrapper | |
134 | return dec | |
135 | ||
d1f70c6c FT |
136 | class sessiondata(object): |
137 | @classmethod | |
9bc70dab | 138 | def get(cls, req, create=True): |
d1f70c6c FT |
139 | sess = cls.sessdb().get(req) |
140 | with sess.lock: | |
141 | try: | |
142 | return sess[cls] | |
143 | except KeyError: | |
8f911ff6 FT |
144 | if not create: |
145 | return None | |
5b35322c | 146 | ret = cls(req, sess) |
d1f70c6c FT |
147 | sess[cls] = ret |
148 | return ret | |
149 | ||
150 | @classmethod | |
151 | def sessdb(cls): | |
1f61bf31 | 152 | return session.default.val |
d1f70c6c | 153 | |
f13b8f5a FT |
154 | class autodirty(sessiondata): |
155 | @classmethod | |
156 | def get(cls, req): | |
d13a1a57 | 157 | ret = super().get(req) |
f13b8f5a FT |
158 | if "_is_dirty" not in ret.__dict__: |
159 | ret.__dict__["_is_dirty"] = False | |
617b21df | 160 | return ret |
f13b8f5a | 161 | |
d1f70c6c | 162 | def sessfrozen(self): |
f13b8f5a | 163 | self.__dict__["_is_dirty"] = False |
d1f70c6c FT |
164 | |
165 | def sessdirty(self): | |
f13b8f5a | 166 | return self._is_dirty |
d1f70c6c FT |
167 | |
168 | def __setattr__(self, name, value): | |
a4ad119b | 169 | super().__setattr__(name, value) |
f13b8f5a FT |
170 | if "_is_dirty" in self.__dict__: |
171 | self.__dict__["_is_dirty"] = True | |
d1f70c6c FT |
172 | |
173 | def __delattr__(self, name): | |
d13a1a57 | 174 | super().__delattr__(name, value) |
f13b8f5a FT |
175 | if "_is_dirty" in self.__dict__: |
176 | self.__dict__["_is_dirty"] = True | |
3b9bc700 FT |
177 | |
178 | class manudirty(object): | |
179 | def __init__(self, *args, **kwargs): | |
d13a1a57 | 180 | super().__init__(*args, **kwargs) |
3b9bc700 FT |
181 | self.__dirty = False |
182 | ||
183 | def sessfrozen(self): | |
184 | self.__dirty = False | |
185 | ||
186 | def sessdirty(self): | |
187 | return self.__dirty | |
188 | ||
189 | def dirty(self): | |
190 | self.__dirty = True | |
df5f7868 FT |
191 | |
192 | class specslot(object): | |
193 | __slots__ = ["nm", "idx", "dirty"] | |
194 | unbound = object() | |
195 | ||
196 | def __init__(self, nm, idx, dirty): | |
197 | self.nm = nm | |
198 | self.idx = idx | |
199 | self.dirty = dirty | |
200 | ||
201 | @staticmethod | |
202 | def slist(ins): | |
203 | # Avoid calling __getattribute__ | |
204 | return specdirty.__sslots__.__get__(ins, type(ins)) | |
205 | ||
206 | def __get__(self, ins, cls): | |
207 | val = self.slist(ins)[self.idx] | |
208 | if val is specslot.unbound: | |
209 | raise AttributeError("specslot %r is unbound" % self.nm) | |
210 | return val | |
211 | ||
212 | def __set__(self, ins, val): | |
213 | self.slist(ins)[self.idx] = val | |
214 | if self.dirty: | |
215 | ins.dirty() | |
216 | ||
217 | def __delete__(self, ins): | |
218 | self.slist(ins)[self.idx] = specslot.unbound | |
219 | ins.dirty() | |
220 | ||
221 | class specclass(type): | |
222 | def __init__(self, name, bases, tdict): | |
f605aaf2 | 223 | super().__init__(name, bases, tdict) |
df5f7868 FT |
224 | sslots = set() |
225 | dslots = set() | |
226 | for cls in self.__mro__: | |
227 | css = cls.__dict__.get("__saveslots__", ()) | |
228 | sslots.update(css) | |
229 | dslots.update(cls.__dict__.get("__dirtyslots__", css)) | |
230 | self.__sslots_l__ = list(sslots) | |
231 | self.__sslots_a__ = list(sslots | dslots) | |
232 | for i, slot in enumerate(self.__sslots_a__): | |
233 | setattr(self, slot, specslot(slot, i, slot in dslots)) | |
234 | ||
f605aaf2 | 235 | class specdirty(sessiondata, metaclass=specclass): |
df5f7868 FT |
236 | __slots__ = ["session", "__sslots__", "_is_dirty"] |
237 | ||
238 | def __specinit__(self): | |
239 | pass | |
240 | ||
241 | @staticmethod | |
242 | def __new__(cls, req, sess): | |
f605aaf2 | 243 | self = super().__new__(cls) |
df5f7868 FT |
244 | self.session = sess |
245 | self.__sslots__ = [specslot.unbound] * len(cls.__sslots_a__) | |
246 | self.__specinit__() | |
247 | self._is_dirty = False | |
248 | return self | |
249 | ||
250 | def __getnewargs__(self): | |
251 | return (None, self.session) | |
252 | ||
253 | def dirty(self): | |
254 | self._is_dirty = True | |
255 | ||
256 | def sessfrozen(self): | |
257 | self._is_dirty = False | |
258 | ||
259 | def sessdirty(self): | |
260 | return self._is_dirty | |
261 | ||
262 | def __getstate__(self): | |
263 | ret = {} | |
264 | for nm, val in zip(type(self).__sslots_a__, specslot.slist(self)): | |
265 | if val is specslot.unbound: | |
266 | ret[nm] = False, None | |
267 | else: | |
268 | ret[nm] = True, val | |
269 | return ret | |
270 | ||
271 | def __setstate__(self, st): | |
272 | ss = specslot.slist(self) | |
273 | for i, nm in enumerate(type(self).__sslots_a__): | |
274 | bound, val = st.pop(nm, (False, None)) | |
df5f7868 FT |
275 | if not bound: |
276 | ss[i] = specslot.unbound | |
277 | else: | |
278 | ss[i] = val | |
1864be32 FT |
279 | |
280 | def datecheck(req, mtime): | |
281 | if "If-Modified-Since" in req.ihead: | |
282 | rtime = proto.phttpdate(req.ihead["If-Modified-Since"]) | |
438b6207 | 283 | if rtime is not None and rtime >= math.floor(mtime): |
1864be32 FT |
284 | raise resp.unmodified() |
285 | req.ohead["Last-Modified"] = proto.httpdate(mtime) |