1 /* gmp_vsscanf -- formatted input from a string. 2 3 Copyright 2001, 2002 Free Software Foundation, Inc. 4 5 This file is part of the GNU MP Library. 6 7 The GNU MP Library is free software; you can redistribute it and/or modify 8 it under the terms of the GNU Lesser General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or (at your 10 option) any later version. 11 12 The GNU MP Library is distributed in the hope that it will be useful, but 13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 15 License for more details. 16 17 You should have received a copy of the GNU Lesser General Public License 18 along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */ 19 20 #include "config.h" 21 22 #if HAVE_STDARG 23 #include <stdarg.h> 24 #else 25 #include <varargs.h> 26 #endif 27 28 #include <string.h> 29 30 #include "gmp.h" 31 #include "gmp-impl.h" 32 33 34 int 35 gmp_vsscanf (const char *s, const char *fmt, va_list ap) 36 { 37 #if SSCANF_WRITABLE_INPUT 38 /* We only actually need this if there's standard C types in fmt, and if 39 "s" is not already writable, but it's too much trouble to check that, 40 and in any case this writable sscanf input business is only for a few 41 old systems. */ 42 size_t size; 43 char *alloc; 44 int ret; 45 size = strlen (s) + 1; 46 alloc = (char *) (*__gmp_allocate_func) (size); 47 memcpy (alloc, s, size); 48 s = alloc; 49 ret = __gmp_doscan (&__gmp_sscanf_funs, (void *) &s, fmt, ap); 50 (*__gmp_free_func) (alloc, size); 51 return ret; 52 53 #else 54 return __gmp_doscan (&__gmp_sscanf_funs, (void *) &s, fmt, ap); 55 #endif 56 } 57