Commit | Line | Data |
---|---|---|
bbdebbab | 1 | import inspect |
fd7af0a2 | 2 | from . import req, dispatch, session, form, resp |
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] | |
fd7af0a2 | 28 | for i in range(len(spec.args) - len(spec.defaults)): |
5a071401 FT |
29 | if spec.args[i] not in args: |
30 | raise resp.httperror(400, "Missing parameter", ("The query parameter `", resp.h.code(spec.args[i]), "' is required but not supplied.")) | |
bbdebbab FT |
31 | return callable(**args) |
32 | return wrapper | |
33 | ||
d9979128 FT |
34 | def persession(data = None): |
35 | def dec(callable): | |
36 | def wrapper(req): | |
37 | sess = session.get(req) | |
38 | if callable not in sess: | |
39 | if data is None: | |
40 | sess[callable] = callable() | |
41 | else: | |
42 | if data not in sess: | |
43 | sess[data] = data() | |
44 | sess[callable] = callable(data) | |
45 | return sess[callable].handle(req) | |
46 | return wrapper | |
47 | return dec | |
d1f70c6c | 48 | |
77dd732a FT |
49 | class preiter(object): |
50 | __slots__ = ["bk", "bki", "_next"] | |
51 | end = object() | |
52 | def __init__(self, real): | |
53 | self.bk = real | |
54 | self.bki = iter(real) | |
55 | self._next = None | |
a7a09080 | 56 | self.__next__() |
77dd732a FT |
57 | |
58 | def __iter__(self): | |
59 | return self | |
60 | ||
a7a09080 | 61 | def __next__(self): |
77dd732a FT |
62 | if self._next is self.end: |
63 | raise StopIteration() | |
64 | ret = self._next | |
65 | try: | |
66 | self._next = next(self.bki) | |
67 | except StopIteration: | |
68 | self._next = self.end | |
69 | return ret | |
70 | ||
71 | def close(self): | |
72 | if hasattr(self.bk, "close"): | |
73 | self.bk.close() | |
74 | ||
75 | def pregen(callable): | |
76 | def wrapper(*args, **kwargs): | |
77 | return preiter(callable(*args, **kwargs)) | |
78 | return wrapper | |
79 | ||
d1f70c6c FT |
80 | class sessiondata(object): |
81 | @classmethod | |
8f911ff6 | 82 | def get(cls, req, create = True): |
d1f70c6c FT |
83 | sess = cls.sessdb().get(req) |
84 | with sess.lock: | |
85 | try: | |
86 | return sess[cls] | |
87 | except KeyError: | |
8f911ff6 FT |
88 | if not create: |
89 | return None | |
5b35322c | 90 | ret = cls(req, sess) |
d1f70c6c FT |
91 | sess[cls] = ret |
92 | return ret | |
93 | ||
94 | @classmethod | |
95 | def sessdb(cls): | |
1f61bf31 | 96 | return session.default.val |
d1f70c6c | 97 | |
f13b8f5a FT |
98 | class autodirty(sessiondata): |
99 | @classmethod | |
100 | def get(cls, req): | |
d13a1a57 | 101 | ret = super().get(req) |
f13b8f5a FT |
102 | if "_is_dirty" not in ret.__dict__: |
103 | ret.__dict__["_is_dirty"] = False | |
617b21df | 104 | return ret |
f13b8f5a | 105 | |
d1f70c6c | 106 | def sessfrozen(self): |
f13b8f5a | 107 | self.__dict__["_is_dirty"] = False |
d1f70c6c FT |
108 | |
109 | def sessdirty(self): | |
f13b8f5a | 110 | return self._is_dirty |
d1f70c6c FT |
111 | |
112 | def __setattr__(self, name, value): | |
a4ad119b | 113 | super().__setattr__(name, value) |
f13b8f5a FT |
114 | if "_is_dirty" in self.__dict__: |
115 | self.__dict__["_is_dirty"] = True | |
d1f70c6c FT |
116 | |
117 | def __delattr__(self, name): | |
d13a1a57 | 118 | super().__delattr__(name, value) |
f13b8f5a FT |
119 | if "_is_dirty" in self.__dict__: |
120 | self.__dict__["_is_dirty"] = True | |
3b9bc700 FT |
121 | |
122 | class manudirty(object): | |
123 | def __init__(self, *args, **kwargs): | |
d13a1a57 | 124 | super().__init__(*args, **kwargs) |
3b9bc700 FT |
125 | self.__dirty = False |
126 | ||
127 | def sessfrozen(self): | |
128 | self.__dirty = False | |
129 | ||
130 | def sessdirty(self): | |
131 | return self.__dirty | |
132 | ||
133 | def dirty(self): | |
134 | self.__dirty = True | |
df5f7868 FT |
135 | |
136 | class specslot(object): | |
137 | __slots__ = ["nm", "idx", "dirty"] | |
138 | unbound = object() | |
139 | ||
140 | def __init__(self, nm, idx, dirty): | |
141 | self.nm = nm | |
142 | self.idx = idx | |
143 | self.dirty = dirty | |
144 | ||
145 | @staticmethod | |
146 | def slist(ins): | |
147 | # Avoid calling __getattribute__ | |
148 | return specdirty.__sslots__.__get__(ins, type(ins)) | |
149 | ||
150 | def __get__(self, ins, cls): | |
151 | val = self.slist(ins)[self.idx] | |
152 | if val is specslot.unbound: | |
153 | raise AttributeError("specslot %r is unbound" % self.nm) | |
154 | return val | |
155 | ||
156 | def __set__(self, ins, val): | |
157 | self.slist(ins)[self.idx] = val | |
158 | if self.dirty: | |
159 | ins.dirty() | |
160 | ||
161 | def __delete__(self, ins): | |
162 | self.slist(ins)[self.idx] = specslot.unbound | |
163 | ins.dirty() | |
164 | ||
165 | class specclass(type): | |
166 | def __init__(self, name, bases, tdict): | |
f605aaf2 | 167 | super().__init__(name, bases, tdict) |
df5f7868 FT |
168 | sslots = set() |
169 | dslots = set() | |
170 | for cls in self.__mro__: | |
171 | css = cls.__dict__.get("__saveslots__", ()) | |
172 | sslots.update(css) | |
173 | dslots.update(cls.__dict__.get("__dirtyslots__", css)) | |
174 | self.__sslots_l__ = list(sslots) | |
175 | self.__sslots_a__ = list(sslots | dslots) | |
176 | for i, slot in enumerate(self.__sslots_a__): | |
177 | setattr(self, slot, specslot(slot, i, slot in dslots)) | |
178 | ||
f605aaf2 | 179 | class specdirty(sessiondata, metaclass=specclass): |
df5f7868 FT |
180 | __slots__ = ["session", "__sslots__", "_is_dirty"] |
181 | ||
182 | def __specinit__(self): | |
183 | pass | |
184 | ||
185 | @staticmethod | |
186 | def __new__(cls, req, sess): | |
f605aaf2 | 187 | self = super().__new__(cls) |
df5f7868 FT |
188 | self.session = sess |
189 | self.__sslots__ = [specslot.unbound] * len(cls.__sslots_a__) | |
190 | self.__specinit__() | |
191 | self._is_dirty = False | |
192 | return self | |
193 | ||
194 | def __getnewargs__(self): | |
195 | return (None, self.session) | |
196 | ||
197 | def dirty(self): | |
198 | self._is_dirty = True | |
199 | ||
200 | def sessfrozen(self): | |
201 | self._is_dirty = False | |
202 | ||
203 | def sessdirty(self): | |
204 | return self._is_dirty | |
205 | ||
206 | def __getstate__(self): | |
207 | ret = {} | |
208 | for nm, val in zip(type(self).__sslots_a__, specslot.slist(self)): | |
209 | if val is specslot.unbound: | |
210 | ret[nm] = False, None | |
211 | else: | |
212 | ret[nm] = True, val | |
213 | return ret | |
214 | ||
215 | def __setstate__(self, st): | |
216 | ss = specslot.slist(self) | |
217 | for i, nm in enumerate(type(self).__sslots_a__): | |
218 | bound, val = st.pop(nm, (False, None)) | |
df5f7868 FT |
219 | if not bound: |
220 | ss[i] = specslot.unbound | |
221 | else: | |
222 | ss[i] = val |