1 /*
2  * The authors of this software are Rob Pike and Ken Thompson.
3  *              Copyright (c) 2002 by Lucent Technologies.
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose without fee is hereby granted, provided that this entire notice
6  * is included in all copies of any software which is or includes a copy
7  * or modification of this software and in all copies of the supporting
8  * documentation for such software.
9  * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
10  * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY
11  * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
12  * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
13  */
14 #include <stdlib.h>
15 #include <stdarg.h>
16 #include "fmt.h"
17 #include "fmtdef.h"
18 
19 /*
20  * print into an allocated string buffer
21  */
22 char*
23 vsmprint(char *fmt, va_list args)
24 {
25 	Fmt f;
26 	int n;
27 
28 	if(fmtstrinit(&f) < 0)
29 		return nil;
30 	f.args = args;
31 	n = dofmt(&f, fmt);
32 	if(n < 0)
33 		return nil;
34 	*(char*)f.to = '\0';
35 	return (char*)f.start;
36 }