Commit | Line | Data |
---|---|---|
bbdebbab | 1 | import inspect |
ca6fd155 | 2 | from . import req, dispatch, session, form |
b409a338 FT |
3 | |
4 | def wsgiwrap(callable): | |
5 | def wrapper(env, startreq): | |
7450e2fc | 6 | return dispatch.handleenv(env, startreq, callable) |
b409a338 | 7 | return wrapper |
d9979128 | 8 | |
c2fc67dc FT |
9 | def stringwrap(charset): |
10 | def dec(callable): | |
11 | def wrapper(*args, **kwargs): | |
12 | bk = callable(*args, **kwargs) | |
13 | for string in bk: | |
14 | yield string.encode(charset) | |
15 | return wrapper | |
16 | return dec | |
17 | ||
bbdebbab FT |
18 | def formparams(callable): |
19 | def wrapper(req): | |
20 | data = form.formdata(req) | |
21 | spec = inspect.getargspec(callable) | |
22 | args = dict(data.items()) | |
23 | args["req"] = req | |
24 | if not spec.keywords: | |
25 | for arg in list(args): | |
26 | if arg not in spec.args: | |
27 | del args[arg] | |
28 | return callable(**args) | |
29 | return wrapper | |
30 | ||
d9979128 FT |
31 | def persession(data = None): |
32 | def dec(callable): | |
33 | def wrapper(req): | |
34 | sess = session.get(req) | |
35 | if callable not in sess: | |
36 | if data is None: | |
37 | sess[callable] = callable() | |
38 | else: | |
39 | if data not in sess: | |
40 | sess[data] = data() | |
41 | sess[callable] = callable(data) | |
42 | return sess[callable].handle(req) | |
43 | return wrapper | |
44 | return dec | |
d1f70c6c | 45 | |
77dd732a FT |
46 | class preiter(object): |
47 | __slots__ = ["bk", "bki", "_next"] | |
48 | end = object() | |
49 | def __init__(self, real): | |
50 | self.bk = real | |
51 | self.bki = iter(real) | |
52 | self._next = None | |
a7a09080 | 53 | self.__next__() |
77dd732a FT |
54 | |
55 | def __iter__(self): | |
56 | return self | |
57 | ||
a7a09080 | 58 | def __next__(self): |
77dd732a FT |
59 | if self._next is self.end: |
60 | raise StopIteration() | |
61 | ret = self._next | |
62 | try: | |
63 | self._next = next(self.bki) | |
64 | except StopIteration: | |
65 | self._next = self.end | |
66 | return ret | |
67 | ||
68 | def close(self): | |
69 | if hasattr(self.bk, "close"): | |
70 | self.bk.close() | |
71 | ||
72 | def pregen(callable): | |
73 | def wrapper(*args, **kwargs): | |
74 | return preiter(callable(*args, **kwargs)) | |
75 | return wrapper | |
76 | ||
d1f70c6c FT |
77 | class sessiondata(object): |
78 | @classmethod | |
8f911ff6 | 79 | def get(cls, req, create = True): |
d1f70c6c FT |
80 | sess = cls.sessdb().get(req) |
81 | with sess.lock: | |
82 | try: | |
83 | return sess[cls] | |
84 | except KeyError: | |
8f911ff6 FT |
85 | if not create: |
86 | return None | |
5b35322c | 87 | ret = cls(req, sess) |
d1f70c6c FT |
88 | sess[cls] = ret |
89 | return ret | |
90 | ||
91 | @classmethod | |
92 | def sessdb(cls): | |
1f61bf31 | 93 | return session.default.val |
d1f70c6c | 94 | |
f13b8f5a FT |
95 | class autodirty(sessiondata): |
96 | @classmethod | |
97 | def get(cls, req): | |
d13a1a57 | 98 | ret = super().get(req) |
f13b8f5a FT |
99 | if "_is_dirty" not in ret.__dict__: |
100 | ret.__dict__["_is_dirty"] = False | |
617b21df | 101 | return ret |
f13b8f5a | 102 | |
d1f70c6c | 103 | def sessfrozen(self): |
f13b8f5a | 104 | self.__dict__["_is_dirty"] = False |
d1f70c6c FT |
105 | |
106 | def sessdirty(self): | |
f13b8f5a | 107 | return self._is_dirty |
d1f70c6c FT |
108 | |
109 | def __setattr__(self, name, value): | |
a4ad119b | 110 | super().__setattr__(name, value) |
f13b8f5a FT |
111 | if "_is_dirty" in self.__dict__: |
112 | self.__dict__["_is_dirty"] = True | |
d1f70c6c FT |
113 | |
114 | def __delattr__(self, name): | |
d13a1a57 | 115 | super().__delattr__(name, value) |
f13b8f5a FT |
116 | if "_is_dirty" in self.__dict__: |
117 | self.__dict__["_is_dirty"] = True | |
3b9bc700 FT |
118 | |
119 | class manudirty(object): | |
120 | def __init__(self, *args, **kwargs): | |
d13a1a57 | 121 | super().__init__(*args, **kwargs) |
3b9bc700 FT |
122 | self.__dirty = False |
123 | ||
124 | def sessfrozen(self): | |
125 | self.__dirty = False | |
126 | ||
127 | def sessdirty(self): | |
128 | return self.__dirty | |
129 | ||
130 | def dirty(self): | |
131 | self.__dirty = True | |
df5f7868 FT |
132 | |
133 | class specslot(object): | |
134 | __slots__ = ["nm", "idx", "dirty"] | |
135 | unbound = object() | |
136 | ||
137 | def __init__(self, nm, idx, dirty): | |
138 | self.nm = nm | |
139 | self.idx = idx | |
140 | self.dirty = dirty | |
141 | ||
142 | @staticmethod | |
143 | def slist(ins): | |
144 | # Avoid calling __getattribute__ | |
145 | return specdirty.__sslots__.__get__(ins, type(ins)) | |
146 | ||
147 | def __get__(self, ins, cls): | |
148 | val = self.slist(ins)[self.idx] | |
149 | if val is specslot.unbound: | |
150 | raise AttributeError("specslot %r is unbound" % self.nm) | |
151 | return val | |
152 | ||
153 | def __set__(self, ins, val): | |
154 | self.slist(ins)[self.idx] = val | |
155 | if self.dirty: | |
156 | ins.dirty() | |
157 | ||
158 | def __delete__(self, ins): | |
159 | self.slist(ins)[self.idx] = specslot.unbound | |
160 | ins.dirty() | |
161 | ||
162 | class specclass(type): | |
163 | def __init__(self, name, bases, tdict): | |
f605aaf2 | 164 | super().__init__(name, bases, tdict) |
df5f7868 FT |
165 | sslots = set() |
166 | dslots = set() | |
167 | for cls in self.__mro__: | |
168 | css = cls.__dict__.get("__saveslots__", ()) | |
169 | sslots.update(css) | |
170 | dslots.update(cls.__dict__.get("__dirtyslots__", css)) | |
171 | self.__sslots_l__ = list(sslots) | |
172 | self.__sslots_a__ = list(sslots | dslots) | |
173 | for i, slot in enumerate(self.__sslots_a__): | |
174 | setattr(self, slot, specslot(slot, i, slot in dslots)) | |
175 | ||
f605aaf2 | 176 | class specdirty(sessiondata, metaclass=specclass): |
df5f7868 FT |
177 | __slots__ = ["session", "__sslots__", "_is_dirty"] |
178 | ||
179 | def __specinit__(self): | |
180 | pass | |
181 | ||
182 | @staticmethod | |
183 | def __new__(cls, req, sess): | |
f605aaf2 | 184 | self = super().__new__(cls) |
df5f7868 FT |
185 | self.session = sess |
186 | self.__sslots__ = [specslot.unbound] * len(cls.__sslots_a__) | |
187 | self.__specinit__() | |
188 | self._is_dirty = False | |
189 | return self | |
190 | ||
191 | def __getnewargs__(self): | |
192 | return (None, self.session) | |
193 | ||
194 | def dirty(self): | |
195 | self._is_dirty = True | |
196 | ||
197 | def sessfrozen(self): | |
198 | self._is_dirty = False | |
199 | ||
200 | def sessdirty(self): | |
201 | return self._is_dirty | |
202 | ||
203 | def __getstate__(self): | |
204 | ret = {} | |
205 | for nm, val in zip(type(self).__sslots_a__, specslot.slist(self)): | |
206 | if val is specslot.unbound: | |
207 | ret[nm] = False, None | |
208 | else: | |
209 | ret[nm] = True, val | |
210 | return ret | |
211 | ||
212 | def __setstate__(self, st): | |
213 | ss = specslot.slist(self) | |
214 | for i, nm in enumerate(type(self).__sslots_a__): | |
215 | bound, val = st.pop(nm, (False, None)) | |
df5f7868 FT |
216 | if not bound: |
217 | ss[i] = specslot.unbound | |
218 | else: | |
219 | ss[i] = val |