lib/c-vasprintf.h

   1 /* vasprintf and asprintf, in C locale.
   2    Copyright (C) 2002-2004, 2006-2018 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 of the License, or
   7    (at your option) 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
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #ifndef _C_VASPRINTF_H
  18 #define _C_VASPRINTF_H
  19
  20 /* Get va_list.  */
  21 #include <stdarg.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 /* asprintf() and vasprintf(), but formatting takes place in the C locale, that
  40    is, the decimal point used in floating-point formatting directives is always
  41    '.'. */
  42 int c_asprintf (char **resultp, const char *format, ...)
  43        _GL_ATTRIBUTE_FORMAT ((__printf__, 2, 3));
  44 int c_vasprintf (char **resultp, const char *format, va_list args)
  45        _GL_ATTRIBUTE_FORMAT ((__printf__, 2, 0));
  46
  47 #ifdef __cplusplus
  48 }
  49 #endif
  50
  51 #endif /* _C_VASPRINTF_H */