tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4
5#include "../debug.h"
6#include "helpline.h"
7#include "ui.h"
8#include "../util.h"
9
10char ui_helpline__current[512];
11
12static void nop_helpline__pop(void)
13{
14}
15
16static void nop_helpline__push(const char *msg __maybe_unused)
17{
18}
19
20static int nop_helpline__show(const char *fmt __maybe_unused,
21 va_list ap __maybe_unused)
22{
23 return 0;
24}
25
26static struct ui_helpline default_helpline_fns = {
27 .pop = nop_helpline__pop,
28 .push = nop_helpline__push,
29 .show = nop_helpline__show,
30};
31
32struct ui_helpline *helpline_fns = &default_helpline_fns;
33
34void ui_helpline__pop(void)
35{
36 helpline_fns->pop();
37}
38
39void ui_helpline__push(const char *msg)
40{
41 helpline_fns->push(msg);
42}
43
44void ui_helpline__vpush(const char *fmt, va_list ap)
45{
46 char *s;
47
48 if (vasprintf(&s, fmt, ap) < 0)
49 vfprintf(stderr, fmt, ap);
50 else {
51 ui_helpline__push(s);
52 free(s);
53 }
54}
55
56void ui_helpline__fpush(const char *fmt, ...)
57{
58 va_list ap;
59
60 va_start(ap, fmt);
61 ui_helpline__vpush(fmt, ap);
62 va_end(ap);
63}
64
65void ui_helpline__puts(const char *msg)
66{
67 ui_helpline__pop();
68 ui_helpline__push(msg);
69}
70
71int ui_helpline__vshow(const char *fmt, va_list ap)
72{
73 return helpline_fns->show(fmt, ap);
74}