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1 | # -*-pyrex-*- |
2 | # |
3 | # $Id$ |
4 | # |
5 | # File selectors |
6 | # |
7 | # (c) 2005 Straylight/Edgeware |
8 | # |
9 | |
10 | #----- Licensing notice ----------------------------------------------------- |
11 | # |
12 | # This file is part of the Python interface to mLib. |
13 | # |
14 | # mLib/Python is free software; you can redistribute it and/or modify |
15 | # it under the terms of the GNU General Public License as published by |
16 | # the Free Software Foundation; either version 2 of the License, or |
17 | # (at your option) any later version. |
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18 | # |
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19 | # mLib/Python is distributed in the hope that it will be useful, |
20 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | # GNU General Public License for more details. |
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23 | # |
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24 | # You should have received a copy of the GNU General Public License |
25 | # along with mLib/Python; if not, write to the Free Software Foundation, |
26 | # Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | |
28 | SEL_READ = _SEL_READ |
29 | SEL_WRITE = _SEL_WRITE |
30 | SEL_EXCEPT = _SEL_EXC |
31 | |
32 | cdef class SelFile: |
33 | cdef sel_file f |
34 | cdef int _activep |
35 | cdef readonly unsigned mode |
36 | cdef _readyfunc |
37 | def __new__(me, fd, int mode = SEL_READ, readyproc = None, |
38 | *hunoz, **hukairz): |
39 | if (mode != _SEL_READ and |
40 | mode != _SEL_WRITE and |
41 | mode != _SEL_EXC): |
42 | raise ValueError, 'bad select mode' |
43 | sel_initfile(&_sel, &me.f, _getfd(fd), mode, _filefunc, <void *>me) |
44 | me._activep = 0 |
45 | me.mode = mode |
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46 | me._readyfunc = _checkcallable(readyproc, 'ready proc') |
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47 | def __dealloc__(me): |
48 | if me._activep: |
49 | sel_rmfile(&me.f) |
50 | property fd: |
51 | def __get__(me): |
52 | return me.f.fd |
53 | property activep: |
54 | def __get__(me): |
55 | return _tobool(me._activep) |
56 | property readyproc: |
57 | def __get__(me): |
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58 | return me._readyfunc |
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59 | def __set__(me, proc): |
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60 | me._readyfunc = _checkcallable(proc, 'ready proc') |
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61 | def __del__(me): |
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62 | me._readyfunc = None |
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63 | def enable(me): |
64 | if me._activep: |
65 | raise ValueError, 'already enabled' |
66 | sel_addfile(&me.f) |
67 | me._enabled() |
68 | return me |
69 | def disable(me): |
70 | if not me._activep: |
71 | raise ValueError, 'already disabled' |
72 | sel_rmfile(&me.f) |
73 | me._disabled() |
74 | return me |
75 | def force(me): |
76 | sel_force(&me.f) |
77 | return me |
78 | cdef _enabled(me): |
79 | me._activep = 1 |
80 | me.enabled() |
81 | cdef _disabled(me): |
82 | me._activep = 0 |
83 | me.disabled() |
84 | def enabled(me): |
85 | pass |
86 | def disabled(me): |
87 | pass |
88 | def ready(me): |
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89 | return _maybecall(me._readyfunc, ()) |
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90 | |
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91 | cdef void _filefunc(int fd, unsigned mode, void *arg): |
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92 | cdef SelFile sf |
93 | sf = <SelFile>arg |
94 | sf.ready() |
95 | |
96 | #----- That's all, folks ---------------------------------------------------- |