libio/swscanf.c

   1 /* Copyright (C) 1991-2023 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 /* This file defines one of the deprecated scanf variants.  */
  19 #include <features.h>
  20 #undef __GLIBC_USE_DEPRECATED_SCANF
  21 #define __GLIBC_USE_DEPRECATED_SCANF 1
  22
  23 #include <stdarg.h>
  24 #include "strfile.h"
  25
  26 /* Read formatted input from S, according to the format string FORMAT.  */
  27
  28 int
  29 __swscanf (const wchar_t *s, const wchar_t *format, ...)
  30 {
  31   va_list arg;
  32   int done;
  33   _IO_strfile sf;
  34   struct _IO_wide_data wd;
  35   FILE *f = _IO_strfile_readw (&sf, &wd, s);
  36
  37   va_start (arg, format);
  38   done = __vfwscanf_internal (f, format, arg, 0);
  39   va_end (arg);
  40
  41   return done;
  42 }
  43 ldbl_strong_alias (__swscanf, swscanf)