--- /dev/null
+# -*-pyrex-*-
+#
+# $Id$
+#
+# Line buffering
+#
+# (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.
+
+LBUF_CRLF = _LBUF_CRLF
+LBUF_STRICTCRLF = _LBUF_STRICTCRLF
+
+cdef class LineBuffer:
+ cdef lbuf b
+ cdef _line
+ cdef _eof
+ def __new__(me, lineproc = None, eofproc = None, *hunoz, **hukairz):
+ lbuf_init(&me.b, _lbfunc, <void *>me)
+ me._line = _checkcallable(lineproc, 'line proc')
+ me._eof = _checkcallable(eofproc, 'eof proc')
+ def __dealloc__(me):
+ lbuf_destroy(&me.b)
+ property activep:
+ def __get__(me):
+ return _tobool(me.b.f & LBUF_ENABLE)
+ property delim:
+ def __get__(me):
+ if me.b.delim == _LBUF_CRLF or me.b.delim == _LBUF_STRICTCRLF:
+ return me.b.delim
+ else:
+ return chr(me.b.delim)
+ def __set__(me, d):
+ if d == _LBUF_CRLF or d == _LBUF_STRICTCRLF:
+ me.b.delim = d
+ else:
+ me.b.delim = ord(d)
+ property size:
+ def __get__(me):
+ return me.b.sz
+ def __set__(me, sz):
+ if sz <= 0:
+ raise TypeError, 'size must be positive'
+ lbuf_setsize(&me.b, sz)
+ property lineproc:
+ def __get__(me):
+ return me._line
+ def __set__(me, proc):
+ me._line = _checkcallable(proc, 'line proc')
+ def __del__(me):
+ me._line = None
+ property eofproc:
+ def __get__(me):
+ return me._eof
+ def __set__(me, proc):
+ me._eof = _checkcallable(proc, 'eof proc')
+ def __del__(me):
+ me._eof = None
+ def enable(me):
+ if me.b.f & LBUF_ENABLE:
+ raise ValueError, 'already enabled'
+ me.b.f = me.b.f | LBUF_ENABLE
+ me.enabled()
+ return me
+ def disable(me):
+ if not (me.b.f & LBUF_ENABLE):
+ raise ValueError, 'already disabled'
+ me.b.f = me.b.f & ~LBUF_ENABLE
+ me.disabled()
+ return me
+ def close(me):
+ if not (me.b.f & LBUF_ENABLE):
+ raise ValueError, 'buffer disabled'
+ lbuf_close(&me.b)
+ return me
+ property free:
+ def __get__(me):
+ cdef char *p
+ return lbuf_free(&me.b, &p)
+ def flush(me, str):
+ cdef int len
+ cdef char *p
+ cdef char *q
+ cdef size_t n
+ PyString_AsStringAndSize(str, &p, &len)
+ while len > 0:
+ n = lbuf_free(&me.b, &q)
+ if n > len:
+ n = len
+ memcpy(q, p, n)
+ p = p + n
+ len = len - n
+ if not (me.b.f & LBUF_ENABLE):
+ break
+ lbuf_flush(&me.b, q, n)
+ return PyString_FromStringAndSize(p, len)
+ def enabled(me):
+ pass
+ def disabled(me):
+ pass
+ def line(me, line):
+ return _maybecall(me._line, (line,))
+ def eof(me):
+ return _maybecall(me._eof, ())
+
+cdef void _lbfunc(char *s, size_t n, void *arg):
+ cdef LineBuffer sb
+ sb = <LineBuffer>arg
+ if s is NULL:
+ sb.eof()
+ else:
+ sb.line(PyString_FromStringAndSize(s, n))
+
+#----- That's all, folks ----------------------------------------------------