Commit | Line | Data |
---|---|---|
bbdebbab | 1 | import inspect |
5a071401 | 2 | 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 | |
bbdebbab FT |
9 | def formparams(callable): |
10 | def wrapper(req): | |
11 | data = form.formdata(req) | |
12 | spec = inspect.getargspec(callable) | |
13 | args = dict(data.items()) | |
14 | args["req"] = req | |
15 | if not spec.keywords: | |
16 | for arg in list(args): | |
17 | if arg not in spec.args: | |
18 | del args[arg] | |
5a071401 FT |
19 | for i in xrange(len(spec.args) - len(spec.defaults)): |
20 | if spec.args[i] not in args: | |
21 | raise resp.httperror(400, "Missing parameter", ("The query parameter `", resp.h.code(spec.args[i]), "' is required but not supplied.")) | |
bbdebbab FT |
22 | return callable(**args) |
23 | return wrapper | |
24 | ||
d9979128 FT |
25 | def persession(data = None): |
26 | def dec(callable): | |
27 | def wrapper(req): | |
28 | sess = session.get(req) | |
29 | if callable not in sess: | |
30 | if data is None: | |
31 | sess[callable] = callable() | |
32 | else: | |
33 | if data not in sess: | |
34 | sess[data] = data() | |
35 | sess[callable] = callable(data) | |
36 | return sess[callable].handle(req) | |
37 | return wrapper | |
38 | return dec | |
d1f70c6c | 39 | |
77dd732a FT |
40 | class preiter(object): |
41 | __slots__ = ["bk", "bki", "_next"] | |
42 | end = object() | |
43 | def __init__(self, real): | |
44 | self.bk = real | |
45 | self.bki = iter(real) | |
46 | self._next = None | |
47 | self.next() | |
48 | ||
49 | def __iter__(self): | |
50 | return self | |
51 | ||
52 | def next(self): | |
53 | if self._next is self.end: | |
54 | raise StopIteration() | |
55 | ret = self._next | |
56 | try: | |
57 | self._next = next(self.bki) | |
58 | except StopIteration: | |
59 | self._next = self.end | |
60 | return ret | |
61 | ||
62 | def close(self): | |
63 | if hasattr(self.bk, "close"): | |
64 | self.bk.close() | |
65 | ||
66 | def pregen(callable): | |
67 | def wrapper(*args, **kwargs): | |
68 | return preiter(callable(*args, **kwargs)) | |
69 | return wrapper | |
70 | ||
d1f70c6c FT |
71 | class sessiondata(object): |
72 | @classmethod | |
8f911ff6 | 73 | def get(cls, req, create = True): |
d1f70c6c FT |
74 | sess = cls.sessdb().get(req) |
75 | with sess.lock: | |
76 | try: | |
77 | return sess[cls] | |
78 | except KeyError: | |
8f911ff6 FT |
79 | if not create: |
80 | return None | |
5b35322c | 81 | ret = cls(req, sess) |
d1f70c6c FT |
82 | sess[cls] = ret |
83 | return ret | |
84 | ||
85 | @classmethod | |
86 | def sessdb(cls): | |
1f61bf31 | 87 | return session.default.val |
d1f70c6c | 88 | |
f13b8f5a FT |
89 | class autodirty(sessiondata): |
90 | @classmethod | |
91 | def get(cls, req): | |
92 | ret = super(autodirty, cls).get(req) | |
93 | if "_is_dirty" not in ret.__dict__: | |
94 | ret.__dict__["_is_dirty"] = False | |
617b21df | 95 | return ret |
f13b8f5a | 96 | |
d1f70c6c | 97 | def sessfrozen(self): |
f13b8f5a | 98 | self.__dict__["_is_dirty"] = False |
d1f70c6c FT |
99 | |
100 | def sessdirty(self): | |
f13b8f5a | 101 | return self._is_dirty |
d1f70c6c FT |
102 | |
103 | def __setattr__(self, name, value): | |
f13b8f5a FT |
104 | super(autodirty, self).__setattr__(name, value) |
105 | if "_is_dirty" in self.__dict__: | |
106 | self.__dict__["_is_dirty"] = True | |
d1f70c6c FT |
107 | |
108 | def __delattr__(self, name): | |
f13b8f5a FT |
109 | super(autodirty, self).__delattr__(name, value) |
110 | if "_is_dirty" in self.__dict__: | |
111 | self.__dict__["_is_dirty"] = True | |
3b9bc700 FT |
112 | |
113 | class manudirty(object): | |
114 | def __init__(self, *args, **kwargs): | |
115 | super(manudirty, self).__init__(*args, **kwargs) | |
116 | self.__dirty = False | |
117 | ||
118 | def sessfrozen(self): | |
119 | self.__dirty = False | |
120 | ||
121 | def sessdirty(self): | |
122 | return self.__dirty | |
123 | ||
124 | def dirty(self): | |
125 | self.__dirty = True | |
df5f7868 FT |
126 | |
127 | class specslot(object): | |
128 | __slots__ = ["nm", "idx", "dirty"] | |
129 | unbound = object() | |
130 | ||
131 | def __init__(self, nm, idx, dirty): | |
132 | self.nm = nm | |
133 | self.idx = idx | |
134 | self.dirty = dirty | |
135 | ||
136 | @staticmethod | |
137 | def slist(ins): | |
138 | # Avoid calling __getattribute__ | |
139 | return specdirty.__sslots__.__get__(ins, type(ins)) | |
140 | ||
141 | def __get__(self, ins, cls): | |
142 | val = self.slist(ins)[self.idx] | |
143 | if val is specslot.unbound: | |
144 | raise AttributeError("specslot %r is unbound" % self.nm) | |
145 | return val | |
146 | ||
147 | def __set__(self, ins, val): | |
148 | self.slist(ins)[self.idx] = val | |
149 | if self.dirty: | |
150 | ins.dirty() | |
151 | ||
152 | def __delete__(self, ins): | |
153 | self.slist(ins)[self.idx] = specslot.unbound | |
154 | ins.dirty() | |
155 | ||
156 | class specclass(type): | |
157 | def __init__(self, name, bases, tdict): | |
158 | super(specclass, self).__init__(name, bases, tdict) | |
159 | sslots = set() | |
160 | dslots = set() | |
161 | for cls in self.__mro__: | |
162 | css = cls.__dict__.get("__saveslots__", ()) | |
163 | sslots.update(css) | |
164 | dslots.update(cls.__dict__.get("__dirtyslots__", css)) | |
165 | self.__sslots_l__ = list(sslots) | |
166 | self.__sslots_a__ = list(sslots | dslots) | |
167 | for i, slot in enumerate(self.__sslots_a__): | |
168 | setattr(self, slot, specslot(slot, i, slot in dslots)) | |
169 | ||
170 | class specdirty(sessiondata): | |
171 | __metaclass__ = specclass | |
172 | __slots__ = ["session", "__sslots__", "_is_dirty"] | |
173 | ||
174 | def __specinit__(self): | |
175 | pass | |
176 | ||
177 | @staticmethod | |
178 | def __new__(cls, req, sess): | |
179 | self = super(specdirty, cls).__new__(cls) | |
180 | self.session = sess | |
181 | self.__sslots__ = [specslot.unbound] * len(cls.__sslots_a__) | |
182 | self.__specinit__() | |
183 | self._is_dirty = False | |
184 | return self | |
185 | ||
186 | def __getnewargs__(self): | |
187 | return (None, self.session) | |
188 | ||
189 | def dirty(self): | |
190 | self._is_dirty = True | |
191 | ||
192 | def sessfrozen(self): | |
193 | self._is_dirty = False | |
194 | ||
195 | def sessdirty(self): | |
196 | return self._is_dirty | |
197 | ||
198 | def __getstate__(self): | |
199 | ret = {} | |
200 | for nm, val in zip(type(self).__sslots_a__, specslot.slist(self)): | |
201 | if val is specslot.unbound: | |
202 | ret[nm] = False, None | |
203 | else: | |
204 | ret[nm] = True, val | |
205 | return ret | |
206 | ||
207 | def __setstate__(self, st): | |
208 | ss = specslot.slist(self) | |
209 | for i, nm in enumerate(type(self).__sslots_a__): | |
210 | bound, val = st.pop(nm, (False, None)) | |
df5f7868 FT |
211 | if not bound: |
212 | ss[i] = specslot.unbound | |
213 | else: | |
214 | ss[i] = val |