lib/c-snprintf.h

   1 /* snprintf in C locale.
   2    Copyright (C) 2012-2019 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3, or (at your option)
   7    any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License along
  15    with this program; if not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #ifndef _C_SNPRINTF_H
  18 #define _C_SNPRINTF_H
  19
  20 /* Get size_t.  */
  21 #include <stddef.h>
  22
  23 /* The __attribute__ feature is available in gcc versions 2.5 and later.
  24    The __-protected variants of the attributes 'format' and 'printf' are
  25    accepted by gcc versions 2.6.4 (effectively 2.7) and later.
  26    We enable _GL_ATTRIBUTE_FORMAT only if these are supported too, because
  27    gnulib and libintl do '#define printf __printf__' when they override
  28    the 'printf' function.  */
  29 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
  30 # define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
  31 #else
  32 # define _GL_ATTRIBUTE_FORMAT(spec) /* empty */
  33 #endif
  34
  35 #ifdef __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 int c_snprintf (char *str, size_t size, const char *format, ...)
  40        _GL_ATTRIBUTE_FORMAT ((__printf__, 3, 4));
  41
  42 #ifdef __cplusplus
  43 }
  44 #endif
  45
  46 #endif /* _C_SNPRINTF_H */