|
0
|
1 /* Implement the snprintf function.
|
|
|
2 Copyright (C) 2003 Free Software Foundation, Inc.
|
|
|
3 Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.
|
|
|
4
|
|
|
5 This file is part of the libiberty library. This library is free
|
|
|
6 software; you can redistribute it and/or modify it under the
|
|
|
7 terms of the GNU General Public License as published by the
|
|
|
8 Free Software Foundation; either version 2, or (at your option)
|
|
|
9 any later version.
|
|
|
10
|
|
|
11 This library is distributed in the hope that it will be useful,
|
|
|
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
14 GNU General Public License for more details.
|
|
|
15
|
|
|
16 You should have received a copy of the GNU General Public License
|
|
|
17 along with GNU CC; see the file COPYING. If not, write to
|
|
|
18 the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
19
|
|
|
20 As a special exception, if you link this library with files
|
|
|
21 compiled with a GNU compiler to produce an executable, this does not cause
|
|
|
22 the resulting executable to be covered by the GNU General Public License.
|
|
|
23 This exception does not however invalidate any other reasons why
|
|
|
24 the executable file might be covered by the GNU General Public License. */
|
|
|
25
|
|
|
26 /*
|
|
|
27
|
|
|
28 @deftypefn Supplemental int snprintf (char *@var{buf}, size_t @var{n}, const char *@var{format}, ...)
|
|
|
29
|
|
|
30 This function is similar to sprintf, but it will print at most @var{n}
|
|
|
31 characters. On error the return value is -1, otherwise it returns the
|
|
|
32 number of characters that would have been printed had @var{n} been
|
|
|
33 sufficiently large, regardless of the actual value of @var{n}. Note
|
|
|
34 some pre-C99 system libraries do not implement this correctly so users
|
|
|
35 cannot generally rely on the return value if the system version of
|
|
|
36 this function is used.
|
|
|
37
|
|
|
38 @end deftypefn
|
|
|
39
|
|
|
40 */
|
|
|
41
|
|
|
42 #include "ansidecl.h"
|
|
|
43
|
|
|
44 #include <stdarg.h>
|
|
|
45 #include <stddef.h>
|
|
|
46
|
|
|
47 int vsnprintf (char *, size_t, const char *, va_list);
|
|
|
48
|
|
|
49 int
|
|
|
50 snprintf (char *s, size_t n, const char *format, ...)
|
|
|
51 {
|
|
|
52 int result;
|
|
|
53 VA_OPEN (ap, format);
|
|
|
54 VA_FIXEDARG (ap, char *, s);
|
|
|
55 VA_FIXEDARG (ap, size_t, n);
|
|
|
56 VA_FIXEDARG (ap, const char *, format);
|
|
|
57 result = vsnprintf (s, n, format, ap);
|
|
|
58 VA_CLOSE (ap);
|
|
|
59 return result;
|
|
|
60 }
|
