@@@ lbuf needs test

[mLib-python] / utils.pyx

### -*-pyrex-*-
###
### Miscellaneous support gubbins
###
### (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.

cdef const char *_text_strlen(object s, Py_ssize_t *sz) except NULL:
  cdef const char *p
  TEXT_PTRLEN(s, &p, sz)
  return p

cdef object _oserror():
  raise OSError(errno, strerror(errno))

cdef int _getfd(object fdobj):
  try:
    fd = int(fdobj)
  except TypeError:
    fd = fdobj.fileno()
  return fd

cdef object _checkcallable(object f, object what):
  if f is not None and not callable(f):
    raise TypeError('%s must be callable' % what)
  return f

cdef object _maybecall(object f, object args):
  if f is None:
    return None
  return f(*args)

###----- That's all, folks --------------------------------------------------