Theodore Ts'o | b0cacab | 2004-11-30 19:00:19 -0500 | [diff] [blame] | 1 | /* vsprintf with automatic memory allocation. |
| 2 | Copyright (C) 2002-2003 Free Software Foundation, Inc. |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or modify it |
| 5 | under the terms of the GNU Library General Public License as published |
| 6 | by the Free Software Foundation; either version 2, 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 GNU |
| 12 | Library General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Library General Public |
| 15 | License along with this program; if not, write to the Free Software |
| 16 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| 17 | USA. */ |
| 18 | |
| 19 | #ifndef _VASNPRINTF_H |
| 20 | #define _VASNPRINTF_H |
| 21 | |
| 22 | /* Get va_list. */ |
| 23 | #include <stdarg.h> |
| 24 | |
| 25 | /* Get size_t. */ |
| 26 | #include <stddef.h> |
| 27 | |
| 28 | #ifndef __attribute__ |
| 29 | /* This feature is available in gcc versions 2.5 and later. */ |
| 30 | # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__ |
| 31 | # define __attribute__(Spec) /* empty */ |
| 32 | # endif |
| 33 | /* The __-protected variants of `format' and `printf' attributes |
| 34 | are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */ |
| 35 | # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7) |
| 36 | # define __format__ format |
| 37 | # define __printf__ printf |
| 38 | # endif |
| 39 | #endif |
| 40 | |
| 41 | #ifdef __cplusplus |
| 42 | extern "C" { |
| 43 | #endif |
| 44 | |
| 45 | /* Write formatted output to a string dynamically allocated with malloc(). |
| 46 | You can pass a preallocated buffer for the result in RESULTBUF and its |
| 47 | size in *LENGTHP; otherwise you pass RESULTBUF = NULL. |
| 48 | If successful, return the address of the string (this may be = RESULTBUF |
| 49 | if no dynamic memory allocation was necessary) and set *LENGTHP to the |
| 50 | number of resulting bytes, excluding the trailing NUL. Upon error, set |
| 51 | errno and return NULL. */ |
| 52 | extern char * asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...) |
| 53 | __attribute__ ((__format__ (__printf__, 3, 4))); |
| 54 | extern char * vasnprintf (char *resultbuf, size_t *lengthp, const char *format, va_list args) |
| 55 | __attribute__ ((__format__ (__printf__, 3, 0))); |
| 56 | |
| 57 | #ifdef __cplusplus |
| 58 | } |
| 59 | #endif |
| 60 | |
| 61 | #endif /* _VASNPRINTF_H */ |