xref: /inferno-os/libkern/fmtprint.c (revision 5d0c4cf3fc288434c41cba52dd998ab1d7375a7b)
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 "lib9.h"
15 #include "fmtdef.h"
16 
17 
18 /*
19  * format a string into the output buffer
20  * designed for formats which themselves call fmt,
21  * but ignore any width flags
22  */
23 int
24 fmtprint(Fmt *f, char *fmt, ...)
25 {
26 	va_list va;
27 	int n;
28 
29 	f->flags = 0;
30 	f->width = 0;
31 	f->prec = 0;
32 	va_copy(va, f->args);
33 	va_end(f->args);
34 	va_start(f->args, fmt);
35 	n = dofmt(f, fmt);
36 	va_end(f->args);
37 	f->flags = 0;
38 	f->width = 0;
39 	f->prec = 0;
40 	va_copy(f->args, va);
41 	va_end(va);
42 	if(n >= 0)
43 		return 0;
44 	return n;
45 }
46 
47