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): |
f639ac81 | 11 | spec = inspect.getargspec(callable) |
bbdebbab | 12 | def wrapper(req): |
806b2bc4 FT |
13 | try: |
14 | data = form.formdata(req) | |
15 | except IOError: | |
16 | raise resp.httperror(400, "Invalid request", "Form data was incomplete") | |
bbdebbab FT |
17 | args = dict(data.items()) |
18 | args["req"] = req | |
19 | if not spec.keywords: | |
20 | for arg in list(args): | |
21 | if arg not in spec.args: | |
22 | del args[arg] | |
babf3e21 | 23 | for i in range(len(spec.args) - (len(spec.defaults) if spec.defaults else 0)): |
5a071401 FT |
24 | if spec.args[i] not in args: |
25 | raise resp.httperror(400, "Missing parameter", ("The query parameter `", resp.h.code(spec.args[i]), "' is required but not supplied.")) | |
bbdebbab | 26 | return callable(**args) |
0f18b774 | 27 | wrapper.__wrapped__ = callable |
bbdebbab FT |
28 | return wrapper |
29 | ||
612eb9f5 FT |
30 | class funplex(object): |
31 | def __init__(self, *funs, **nfuns): | |
32 | self.dir = {} | |
33 | self.dir.update(((self.unwrap(fun).__name__, fun) for fun in funs)) | |
34 | self.dir.update(nfuns) | |
35 | ||
36 | @staticmethod | |
24e514f0 FT |
37 | def unwrap(fun): |
38 | while hasattr(fun, "__wrapped__"): | |
39 | fun = fun.__wrapped__ | |
40 | return fun | |
612eb9f5 FT |
41 | |
42 | def __call__(self, req): | |
525d7938 | 43 | if req.pathinfo == "": |
6a9037cb FT |
44 | if "__root__" in self.dir: |
45 | return self.dir["__root__"](req) | |
525d7938 FT |
46 | raise resp.redirect(req.uriname + "/") |
47 | if req.pathinfo[:1] != "/": | |
48 | raise resp.notfound() | |
49 | p = req.pathinfo[1:] | |
50 | if p == "": | |
51 | p = "__index__" | |
52 | bi = 1 | |
53 | else: | |
54 | p = p.partition("/")[0] | |
55 | bi = len(p) + 1 | |
612eb9f5 | 56 | if p in self.dir: |
65e0a59d FT |
57 | sreq = req.shift(bi) |
58 | sreq.selfpath = req.pathinfo[1:] | |
59 | return self.dir[p](sreq) | |
525d7938 | 60 | raise resp.notfound() |
612eb9f5 FT |
61 | |
62 | def add(self, fun): | |
63 | self.dir[self.unwrap(fun).__name__] = fun | |
64 | return fun | |
65 | ||
66 | def name(self, name): | |
67 | def dec(fun): | |
68 | self.dir[name] = fun | |
69 | return fun | |
70 | return dec | |
525d7938 | 71 | |
9bc70dab | 72 | def persession(data=None): |
d9979128 FT |
73 | def dec(callable): |
74 | def wrapper(req): | |
75 | sess = session.get(req) | |
76 | if callable not in sess: | |
77 | if data is None: | |
78 | sess[callable] = callable() | |
79 | else: | |
80 | if data not in sess: | |
81 | sess[data] = data() | |
82 | sess[callable] = callable(data) | |
83 | return sess[callable].handle(req) | |
0f18b774 | 84 | wrapper.__wrapped__ = callable |
d9979128 FT |
85 | return wrapper |
86 | return dec | |
d1f70c6c | 87 | |
77dd732a FT |
88 | class preiter(object): |
89 | __slots__ = ["bk", "bki", "_next"] | |
90 | end = object() | |
91 | def __init__(self, real): | |
92 | self.bk = real | |
93 | self.bki = iter(real) | |
94 | self._next = None | |
a7a09080 | 95 | self.__next__() |
77dd732a FT |
96 | |
97 | def __iter__(self): | |
98 | return self | |
99 | ||
a7a09080 | 100 | def __next__(self): |
77dd732a FT |
101 | if self._next is self.end: |
102 | raise StopIteration() | |
103 | ret = self._next | |
104 | try: | |
105 | self._next = next(self.bki) | |
106 | except StopIteration: | |
107 | self._next = self.end | |
108 | return ret | |
109 | ||
110 | def close(self): | |
111 | if hasattr(self.bk, "close"): | |
112 | self.bk.close() | |
113 | ||
114 | def pregen(callable): | |
115 | def wrapper(*args, **kwargs): | |
116 | return preiter(callable(*args, **kwargs)) | |
0f18b774 | 117 | wrapper.__wrapped__ = callable |
77dd732a FT |
118 | return wrapper |
119 | ||
62113fc6 FT |
120 | def stringwrap(charset): |
121 | def dec(callable): | |
122 | @pregen | |
123 | def wrapper(*args, **kwargs): | |
124 | for string in callable(*args, **kwargs): | |
125 | yield string.encode(charset) | |
126 | wrapper.__wrapped__ = callable | |
127 | return wrapper | |
128 | return dec | |
129 | ||
d1f70c6c FT |
130 | class sessiondata(object): |
131 | @classmethod | |
9bc70dab | 132 | def get(cls, req, create=True): |
d1f70c6c FT |
133 | sess = cls.sessdb().get(req) |
134 | with sess.lock: | |
135 | try: | |
136 | return sess[cls] | |
137 | except KeyError: | |
8f911ff6 FT |
138 | if not create: |
139 | return None | |
5b35322c | 140 | ret = cls(req, sess) |
d1f70c6c FT |
141 | sess[cls] = ret |
142 | return ret | |
143 | ||
144 | @classmethod | |
145 | def sessdb(cls): | |
1f61bf31 | 146 | return session.default.val |
d1f70c6c | 147 | |
f13b8f5a FT |
148 | class autodirty(sessiondata): |
149 | @classmethod | |
150 | def get(cls, req): | |
d13a1a57 | 151 | ret = super().get(req) |
f13b8f5a FT |
152 | if "_is_dirty" not in ret.__dict__: |
153 | ret.__dict__["_is_dirty"] = False | |
617b21df | 154 | return ret |
f13b8f5a | 155 | |
d1f70c6c | 156 | def sessfrozen(self): |
f13b8f5a | 157 | self.__dict__["_is_dirty"] = False |
d1f70c6c FT |
158 | |
159 | def sessdirty(self): | |
f13b8f5a | 160 | return self._is_dirty |
d1f70c6c FT |
161 | |
162 | def __setattr__(self, name, value): | |
a4ad119b | 163 | super().__setattr__(name, value) |
f13b8f5a FT |
164 | if "_is_dirty" in self.__dict__: |
165 | self.__dict__["_is_dirty"] = True | |
d1f70c6c FT |
166 | |
167 | def __delattr__(self, name): | |
d13a1a57 | 168 | super().__delattr__(name, value) |
f13b8f5a FT |
169 | if "_is_dirty" in self.__dict__: |
170 | self.__dict__["_is_dirty"] = True | |
3b9bc700 FT |
171 | |
172 | class manudirty(object): | |
173 | def __init__(self, *args, **kwargs): | |
d13a1a57 | 174 | super().__init__(*args, **kwargs) |
3b9bc700 FT |
175 | self.__dirty = False |
176 | ||
177 | def sessfrozen(self): | |
178 | self.__dirty = False | |
179 | ||
180 | def sessdirty(self): | |
181 | return self.__dirty | |
182 | ||
183 | def dirty(self): | |
184 | self.__dirty = True | |
df5f7868 FT |
185 | |
186 | class specslot(object): | |
187 | __slots__ = ["nm", "idx", "dirty"] | |
188 | unbound = object() | |
189 | ||
190 | def __init__(self, nm, idx, dirty): | |
191 | self.nm = nm | |
192 | self.idx = idx | |
193 | self.dirty = dirty | |
194 | ||
195 | @staticmethod | |
196 | def slist(ins): | |
197 | # Avoid calling __getattribute__ | |
198 | return specdirty.__sslots__.__get__(ins, type(ins)) | |
199 | ||
200 | def __get__(self, ins, cls): | |
201 | val = self.slist(ins)[self.idx] | |
202 | if val is specslot.unbound: | |
203 | raise AttributeError("specslot %r is unbound" % self.nm) | |
204 | return val | |
205 | ||
206 | def __set__(self, ins, val): | |
207 | self.slist(ins)[self.idx] = val | |
208 | if self.dirty: | |
209 | ins.dirty() | |
210 | ||
211 | def __delete__(self, ins): | |
212 | self.slist(ins)[self.idx] = specslot.unbound | |
213 | ins.dirty() | |
214 | ||
215 | class specclass(type): | |
216 | def __init__(self, name, bases, tdict): | |
f605aaf2 | 217 | super().__init__(name, bases, tdict) |
df5f7868 FT |
218 | sslots = set() |
219 | dslots = set() | |
220 | for cls in self.__mro__: | |
221 | css = cls.__dict__.get("__saveslots__", ()) | |
222 | sslots.update(css) | |
223 | dslots.update(cls.__dict__.get("__dirtyslots__", css)) | |
224 | self.__sslots_l__ = list(sslots) | |
225 | self.__sslots_a__ = list(sslots | dslots) | |
226 | for i, slot in enumerate(self.__sslots_a__): | |
227 | setattr(self, slot, specslot(slot, i, slot in dslots)) | |
228 | ||
f605aaf2 | 229 | class specdirty(sessiondata, metaclass=specclass): |
df5f7868 FT |
230 | __slots__ = ["session", "__sslots__", "_is_dirty"] |
231 | ||
232 | def __specinit__(self): | |
233 | pass | |
234 | ||
235 | @staticmethod | |
236 | def __new__(cls, req, sess): | |
f605aaf2 | 237 | self = super().__new__(cls) |
df5f7868 FT |
238 | self.session = sess |
239 | self.__sslots__ = [specslot.unbound] * len(cls.__sslots_a__) | |
240 | self.__specinit__() | |
241 | self._is_dirty = False | |
242 | return self | |
243 | ||
244 | def __getnewargs__(self): | |
245 | return (None, self.session) | |
246 | ||
247 | def dirty(self): | |
248 | self._is_dirty = True | |
249 | ||
250 | def sessfrozen(self): | |
251 | self._is_dirty = False | |
252 | ||
253 | def sessdirty(self): | |
254 | return self._is_dirty | |
255 | ||
256 | def __getstate__(self): | |
257 | ret = {} | |
258 | for nm, val in zip(type(self).__sslots_a__, specslot.slist(self)): | |
259 | if val is specslot.unbound: | |
260 | ret[nm] = False, None | |
261 | else: | |
262 | ret[nm] = True, val | |
263 | return ret | |
264 | ||
265 | def __setstate__(self, st): | |
266 | ss = specslot.slist(self) | |
267 | for i, nm in enumerate(type(self).__sslots_a__): | |
268 | bound, val = st.pop(nm, (False, None)) | |
df5f7868 FT |
269 | if not bound: |
270 | ss[i] = specslot.unbound | |
271 | else: | |
272 | ss[i] = val | |
1864be32 FT |
273 | |
274 | def datecheck(req, mtime): | |
275 | if "If-Modified-Since" in req.ihead: | |
276 | rtime = proto.phttpdate(req.ihead["If-Modified-Since"]) | |
438b6207 | 277 | if rtime is not None and rtime >= math.floor(mtime): |
1864be32 FT |
278 | raise resp.unmodified() |
279 | req.ohead["Last-Modified"] = proto.httpdate(mtime) |