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, 2002 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 <ansidecl.h>
  30 #ifdef ANSI_PROTOTYPES
  31 #include <stdarg.h>
  32 #else
  33 #include <varargs.h>
  34 #endif
  35 #include <stdio.h>
  36 #undef vsprintf
  37
  38 #if defined _IOSTRG && defined _IOWRT
  39
  40 int
  41 vsprintf (buf, format, ap)
  42      char *buf;
  43      const char *format;
  44      va_list ap;
  45 {
  46   FILE b;
  47   int ret;
  48 #ifdef VMS
  49   b->_flag = _IOWRT|_IOSTRG;
  50   b->_ptr = buf;
  51   b->_cnt = 12000;
  52 #else
  53   b._flag = _IOWRT|_IOSTRG;
  54   b._ptr = buf;
  55   b._cnt = 12000;
  56 #endif
  57   ret = _doprnt(format, ap, &b);
  58   putc('\0', &b);
  59   return ret;
  60
  61 }
  62
  63 #endif