| 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. |
| 18 | # |
| 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. |
| 23 | # |
| 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 |
| 46 | me._ready = _checkcallable(readyproc, 'ready proc') |
| 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): |
| 58 | return me._ready |
| 59 | def __set__(me, proc): |
| 60 | me._ready = _checkcallable(proc, 'ready proc') |
| 61 | def __del__(me): |
| 62 | me._ready = None |
| 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): |
| 89 | return _maybecall(me._ready, ()) |
| 90 | |
| 91 | cdef void _filefunc(int fd, unsigned mode, void *arg): |
| 92 | cdef SelFile sf |
| 93 | sf = <SelFile>arg |
| 94 | sf.ready() |
| 95 | |
| 96 | #----- That's all, folks ---------------------------------------------------- |