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
10 char ui_helpline__current[512];
11
nop_helpline__pop(void)12 static void nop_helpline__pop(void)
13 {
14 }
15
nop_helpline__push(const char * msg __maybe_unused)16 static void nop_helpline__push(const char *msg __maybe_unused)
17 {
18 }
19
nop_helpline__show(const char * fmt __maybe_unused,va_list ap __maybe_unused)20 static int nop_helpline__show(const char *fmt __maybe_unused,
21 va_list ap __maybe_unused)
22 {
23 return 0;
24 }
25
26 static struct ui_helpline default_helpline_fns = {
27 .pop = nop_helpline__pop,
28 .push = nop_helpline__push,
29 .show = nop_helpline__show,
30 };
31
32 struct ui_helpline *helpline_fns = &default_helpline_fns;
33
ui_helpline__pop(void)34 void ui_helpline__pop(void)
35 {
36 helpline_fns->pop();
37 }
38
ui_helpline__push(const char * msg)39 void ui_helpline__push(const char *msg)
40 {
41 helpline_fns->push(msg);
42 }
43
ui_helpline__vpush(const char * fmt,va_list ap)44 void 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
ui_helpline__fpush(const char * fmt,...)56 void 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
ui_helpline__puts(const char * msg)65 void ui_helpline__puts(const char *msg)
66 {
67 ui_helpline__pop();
68 ui_helpline__push(msg);
69 }
70
ui_helpline__vshow(const char * fmt,va_list ap)71 int ui_helpline__vshow(const char *fmt, va_list ap)
72 {
73 return helpline_fns->show(fmt, ap);
74 }
75