stdio-common/isoc99_sscanf.c

   1 /* Copyright (C) 1991-2019 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <stdarg.h>
  19 #include <libio/strfile.h>
  20
  21 /* Read formatted input from S, according to the format string FORMAT.  */
  22 int
  23 __isoc99_sscanf (const char *s, const char *format, ...)
  24 {
  25   va_list arg;
  26   int done;
  27   _IO_strfile sf;
  28   FILE *f = _IO_strfile_read (&sf, s);
  29
  30   va_start (arg, format);
  31   done = __vfscanf_internal (f, format, arg, SCANF_ISOC99_A);
  32   va_end (arg);
  33
  34   return done;
  35 }
  36 libc_hidden_def (__isoc99_sscanf)