X-Git-Url: https://git.distorted.org.uk/~mdw/mLib-python/blobdiff_plain/b51b6cf0b65c84c7b9e130719beede595cc1bfbd..HEAD:/selpk.pyx diff --git a/selpk.pyx b/selpk.pyx index fe85a9f..a54ce95 100644 --- a/selpk.pyx +++ b/selpk.pyx @@ -1,35 +1,38 @@ -# -*-pyrex-*- -# -# $Id$ -# -# Selecting packet-buffer -# -# (c) 2005 Straylight/Edgeware -# +### -*-pyrex-*- +### +### Selecting packet-buffer +### +### (c) 2005 Straylight/Edgeware +### -#----- Licensing notice ----------------------------------------------------- -# -# This file is part of the Python interface to mLib. -# -# mLib/Python is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# mLib/Python is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with mLib/Python; if not, write to the Free Software Foundation, -# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +###----- Licensing notice --------------------------------------------------- +### +### This file is part of the Python interface to mLib. +### +### mLib/Python is free software; you can redistribute it and/or modify +### it under the terms of the GNU General Public License as published by +### the Free Software Foundation; either version 2 of the License, or +### (at your option) any later version. +### +### mLib/Python is distributed in the hope that it will be useful, +### but WITHOUT ANY WARRANTY; without even the implied warranty of +### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +### GNU General Public License for more details. +### +### You should have received a copy of the GNU General Public License +### along with mLib/Python; if not, write to the Free Software Foundation, +### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. cdef class SelPacketBuffer: + """ + SelPacketBuffer(FILE, [packetproc = None], [eofproc = None]) + + Split an incoming stream into packets. + """ cdef selpk p cdef _packet cdef _eof - def __new__(me, fd, packetproc = None, eofproc = None, *hunoz, **hukairz): + def __cinit__(me, fd, packetproc = None, eofproc = None, *hunoz, **hukairz): selpk_init(&me.p, &_sel, _getfd(fd), _selpkfunc, me) selpk_disable(&me.p) me._packet = _checkcallable(packetproc, 'packet proc') @@ -37,26 +40,31 @@ cdef class SelPacketBuffer: def __dealloc__(me): selpk_destroy(&me.p) property activep: + """SPK.activep -> BOOL: is the buffer still active?""" def __get__(me): return _to_bool(me.p.pk.f & PKBUF_ENABLE) property fd: + """SPK.fd -> INT: the file descriptor""" def __get__(me): return me.p.reader.fd property want: + """SPK.want -> INT: size of next packet to return""" def __get__(me): return me.p.pk.want def __set__(me, n): if n <= 0: raise TypeError, 'size must be positive' selpk_want(&me.p, n) - property lineproc: + property packetproc: + """SPK.packetproc -> FUNC: call FUNC(PACKET) on each packet""" def __get__(me): - return me._line + return me._packet def __set__(me, proc): - me._line = _checkcallable(proc, 'line proc') + me._packet = _checkcallable(proc, 'packet proc') def __del__(me): - me._line = None + me._packet = None property eofproc: + """SPK.eofproc -> FUNC: call FUNC() at end-of-file""" def __get__(me): return me._eof def __set__(me, proc): @@ -64,42 +72,48 @@ cdef class SelPacketBuffer: def __del__(me): me._eof = None def enable(me): + """SPK.enable(): enable the buffer, allowing packets to be emitted""" if me.p.pk.f & PKBUF_ENABLE: raise ValueError, 'already enabled' selpk_enable(&me.p) me.enabled() return me def disable(me): + """SPK.disable(): disable the buffer, suspending packet emission""" if not (me.p.pk.f & PKBUF_ENABLE): raise ValueError, 'already disabled' selpk_disable(&me.p) me.disabled() return me def enabled(me): + """SPK.enabled(): called when buffer is enabled""" pass def disabled(me): + """SPK.disabled(): called when buffer is disabled""" pass def packet(me, pk): + """SPK.packet(PACKET): called for each completed packet""" return _maybecall(me._packet, (pk,)) def eof(me): + """SPK.eof(): called at end-of-file""" return _maybecall(me._eof, ()) cdef void _selpkfunc(unsigned char *p, size_t n, pkbuf *pk, size_t *keep, void *arg): cdef SelPacketBuffer pb cdef void *rp - cdef int rn + cdef Py_ssize_t rn pb = arg if p is NULL: pb.eof() else: r = pb.packet(PyString_FromStringAndSize(p, n)) if r is not None: - PyObject_AsReadBuffer(r, &rp, &rn) + PyObject_AsReadBuffer(r, &rp, &rn) if rn > n: raise ValueError, 'remaining buffer too large' if rn: memcpy(p + n - rn, rp, rn) keep[0] = rn -#----- That's all, folks ---------------------------------------------------- +###----- That's all, folks --------------------------------------------------