1 /*
2 * The authors of this software are Rob Pike and Ken Thompson,
3 * with contributions from Mike Burrows and Sean Dorward.
4 *
5 * Copyright (c) 2002-2006 by Lucent Technologies.
6 * Portions Copyright (c) 2004 Google Inc.
7 *
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose without fee is hereby granted, provided that this entire notice
10 * is included in all copies of any software which is or includes a copy
11 * or modification of this software and in all copies of the supporting
12 * documentation for such software.
13 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
14 * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES
15 * NOR GOOGLE INC MAKE ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING
16 * THE MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
17 */
18
19 #include <u.h>
20 #include <libc.h>
21 #include "fmtdef.h"
22
23 /*
24 * Absorb output without using resources.
25 */
26 static Rune nullbuf[32];
27
28 static int
29 __fmtnullflush(Fmt *f)
30 {
31 f->to = nullbuf;
32 f->nfmt = 0;
33 return 0;
34 }
35
36 int
37 fmtnullinit(Fmt *f)
38 {
39 memset(f, 0, sizeof *f);
40 f->runes = 1;
41 f->start = nullbuf;
42 f->to = nullbuf;
43 f->stop = nullbuf+nelem(nullbuf);
44 f->flush = __fmtnullflush;
45 fmtlocaleinit(f, nil, nil, nil);
46 return 0;
47 }
48