libiberty/vsprintf.c

   1 /* Simple implementation of vsprintf for systems without it.
   2    Highly system-dependent, but should work on most "traditional"
   3    implementations of stdio; newer ones should already have vsprintf.
   4    Written by Per Bothner of Cygnus Support.
   5    Based on libg++'s "form" (written by Doug Lea; dl@rocky.oswego.edu).
   6    Copyright (C) 1991, 1995 Free Software Foundation, Inc.
   7
   8 This file is part of the libiberty library.  This library is free
   9 software; you can redistribute it and/or modify it under the
  10 terms of the GNU General Public License as published by the
  11 Free Software Foundation; either version 2, or (at your option)
  12 any later version.
  13
  14 This library is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GNU CC; see the file COPYING.  If not, write to
  21 the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  22
  23 As a special exception, if you link this library with files
  24 compiled with a GNU compiler to produce an executable, this does not cause
  25 the resulting executable to be covered by the GNU General Public License.
  26 This exception does not however invalidate any other reasons why
  27 the executable file might be covered by the GNU General Public License. */
  28
  29 #include <varargs.h>
  30 #include <stdio.h>
  31 #include <ansidecl.h>
  32 #undef vsprintf
  33
  34 int
  35 vsprintf (buf, format, ap)
  36      char *buf;
  37      const char *format;
  38      va_list ap;
  39 {
  40   FILE b;
  41   int ret;
  42 #ifdef VMS
  43   b->_flag = _IOWRT|_IOSTRG;
  44   b->_ptr = buf;
  45   b->_cnt = 12000;
  46 #else
  47   b._flag = _IOWRT|_IOSTRG;
  48   b._ptr = buf;
  49   b._cnt = 12000;
  50 #endif
  51   ret = _doprnt(format, ap, &b);
  52   putc('\0', &b);
  53   return ret;
  54
  55 }