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1 | # -*-pyrex-*- |
2 | # |
3 | # $Id$ |
4 | # |
5 | # Selecting line-buffers |
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 | cdef class SelLineBuffer: |
29 | cdef selbuf b |
30 | cdef _line |
31 | cdef _eof |
32 | def __new__(me, fd, lineproc = None, eofproc = None, *hunoz, **hukairz): |
33 | selbuf_init(&me.b, &_sel, _getfd(fd), _selbfunc, <void *>me) |
34 | selbuf_disable(&me.b) |
35 | me._line = _checkcallable(lineproc, 'line proc') |
36 | me._eof = _checkcallable(eofproc, 'eof proc') |
37 | def __dealloc__(me): |
38 | selbuf_destroy(&me.b) |
39 | property activep: |
40 | def __get__(me): |
41 | return _tobool(me.b.b.f & LBUF_ENABLE) |
42 | property fd: |
43 | def __get__(me): |
44 | return me.b.reader.fd |
45 | property delim: |
46 | def __get__(me): |
47 | if me.b.b.delim == _LBUF_CRLF or me.b.b.delim == _LBUF_STRICTCRLF: |
48 | return me.b.b.delim |
49 | else: |
50 | return chr(me.b.b.delim) |
51 | def __set__(me, d): |
52 | if d == _LBUF_CRLF or d == _LBUF_STRICTCRLF: |
53 | me.b.b.delim = d |
54 | else: |
55 | me.b.b.delim = ord(d) |
56 | property size: |
57 | def __get__(me): |
58 | return me.b.b.sz |
59 | def __set__(me, sz): |
60 | if sz <= 0: |
61 | raise TypeError, 'size must be positive' |
62 | selbuf_setsize(&me.b, sz) |
63 | property lineproc: |
64 | def __get__(me): |
65 | return me._line |
66 | def __set__(me, proc): |
67 | me._line = _checkcallable(proc, 'line proc') |
68 | def __del__(me): |
69 | me._line = None |
70 | property eofproc: |
71 | def __get__(me): |
72 | return me._eof |
73 | def __set__(me, proc): |
74 | me._eof = _checkcallable(proc, 'eof proc') |
75 | def __del__(me): |
76 | me._eof = None |
77 | def enable(me): |
78 | if me.b.b.f & LBUF_ENABLE: |
79 | raise ValueError, 'already enabled' |
80 | selbuf_enable(&me.b) |
81 | me.enabled() |
82 | return me |
83 | def disable(me): |
84 | if not (me.b.b.f & LBUF_ENABLE): |
85 | raise ValueError, 'already disabled' |
86 | selbuf_disable(&me.b) |
87 | me.disabled() |
88 | return me |
89 | def enabled(me): |
90 | pass |
91 | def disabled(me): |
92 | pass |
93 | def line(me, line): |
94 | return _maybecall(me._line, (line,)) |
95 | def eof(me): |
96 | return _maybecall(me._eof, ()) |
97 | |
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98 | cdef void _selbfunc(char *s, size_t n, void *arg): |
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99 | cdef SelLineBuffer sb |
100 | sb = <SelLineBuffer>arg |
101 | if s is NULL: |
102 | sb.eof() |
103 | else: |
104 | sb.line(PyString_FromStringAndSize(s, n)) |
105 | |
106 | #----- That's all, folks ---------------------------------------------------- |