Manipulate buffers used to hold strings.
Copyright (C) 1992 Ian Lance Taylor
This file is part of Taylor UUCP.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License
as published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
The author of the program may be contacted at ian@airs.com or
c/o Infinity Development Systems, P.O. Box 520, Waltham, MA 02254.
/* We keep a linked list of buffers. The union is a hack because the
default definition of offsetof, in uucp.h, takes the address of the
field, and some C compilers will not let you take the address of an
static struct sbuf
*qBlist
;
/* Get a buffer of a given size. The buffer is returned with the
q
= (struct sbuf
*) xmalloc (sizeof (struct sbuf
) + c
- 4);
q
= (struct sbuf
*) xrealloc ((pointer
) q
,
sizeof (struct sbuf
) + c
- 4);
/* Get a buffer holding a given string. */
/* Free up a buffer back onto the linked list. */
ioff
= offsetof (struct sbuf
, u
);
q
= (struct sbuf
*) (pointer
) (z
- ioff
);