1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun #include <stdio.h>
3*4882a593Smuzhiyun #include <stdlib.h>
4*4882a593Smuzhiyun #include <string.h>
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include "helpline.h"
7*4882a593Smuzhiyun #include "ui.h"
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun char ui_helpline__current[512];
10*4882a593Smuzhiyun
nop_helpline__pop(void)11*4882a593Smuzhiyun static void nop_helpline__pop(void)
12*4882a593Smuzhiyun {
13*4882a593Smuzhiyun }
14*4882a593Smuzhiyun
nop_helpline__push(const char * msg __maybe_unused)15*4882a593Smuzhiyun static void nop_helpline__push(const char *msg __maybe_unused)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun }
18*4882a593Smuzhiyun
nop_helpline__show(const char * fmt __maybe_unused,va_list ap __maybe_unused)19*4882a593Smuzhiyun static int nop_helpline__show(const char *fmt __maybe_unused,
20*4882a593Smuzhiyun va_list ap __maybe_unused)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun return 0;
23*4882a593Smuzhiyun }
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun static struct ui_helpline default_helpline_fns = {
26*4882a593Smuzhiyun .pop = nop_helpline__pop,
27*4882a593Smuzhiyun .push = nop_helpline__push,
28*4882a593Smuzhiyun .show = nop_helpline__show,
29*4882a593Smuzhiyun };
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun struct ui_helpline *helpline_fns = &default_helpline_fns;
32*4882a593Smuzhiyun
ui_helpline__pop(void)33*4882a593Smuzhiyun void ui_helpline__pop(void)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun helpline_fns->pop();
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun
ui_helpline__push(const char * msg)38*4882a593Smuzhiyun void ui_helpline__push(const char *msg)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun helpline_fns->push(msg);
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun
ui_helpline__vpush(const char * fmt,va_list ap)43*4882a593Smuzhiyun void ui_helpline__vpush(const char *fmt, va_list ap)
44*4882a593Smuzhiyun {
45*4882a593Smuzhiyun char *s;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun if (vasprintf(&s, fmt, ap) < 0)
48*4882a593Smuzhiyun vfprintf(stderr, fmt, ap);
49*4882a593Smuzhiyun else {
50*4882a593Smuzhiyun ui_helpline__push(s);
51*4882a593Smuzhiyun free(s);
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun }
54*4882a593Smuzhiyun
ui_helpline__fpush(const char * fmt,...)55*4882a593Smuzhiyun void ui_helpline__fpush(const char *fmt, ...)
56*4882a593Smuzhiyun {
57*4882a593Smuzhiyun va_list ap;
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun va_start(ap, fmt);
60*4882a593Smuzhiyun ui_helpline__vpush(fmt, ap);
61*4882a593Smuzhiyun va_end(ap);
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
ui_helpline__puts(const char * msg)64*4882a593Smuzhiyun void ui_helpline__puts(const char *msg)
65*4882a593Smuzhiyun {
66*4882a593Smuzhiyun ui_helpline__pop();
67*4882a593Smuzhiyun ui_helpline__push(msg);
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun
ui_helpline__vshow(const char * fmt,va_list ap)70*4882a593Smuzhiyun int ui_helpline__vshow(const char *fmt, va_list ap)
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun return helpline_fns->show(fmt, ap);
73*4882a593Smuzhiyun }
74*4882a593Smuzhiyun
ui_helpline__printf(const char * fmt,...)75*4882a593Smuzhiyun void ui_helpline__printf(const char *fmt, ...)
76*4882a593Smuzhiyun {
77*4882a593Smuzhiyun va_list ap;
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun ui_helpline__pop();
80*4882a593Smuzhiyun va_start(ap, fmt);
81*4882a593Smuzhiyun ui_helpline__vpush(fmt, ap);
82*4882a593Smuzhiyun va_end(ap);
83*4882a593Smuzhiyun }
84