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 #include <pthread.h>
6*4882a593Smuzhiyun #include <linux/kernel.h>
7*4882a593Smuzhiyun #include <linux/string.h>
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include "../helpline.h"
10*4882a593Smuzhiyun #include "../ui.h"
11*4882a593Smuzhiyun #include "../libslang.h"
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun char ui_helpline__last_msg[1024];
14*4882a593Smuzhiyun bool tui_helpline__set;
15*4882a593Smuzhiyun
tui_helpline__pop(void)16*4882a593Smuzhiyun static void tui_helpline__pop(void)
17*4882a593Smuzhiyun {
18*4882a593Smuzhiyun }
19*4882a593Smuzhiyun
tui_helpline__push(const char * msg)20*4882a593Smuzhiyun static void tui_helpline__push(const char *msg)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun const size_t sz = sizeof(ui_helpline__current);
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun SLsmg_gotorc(SLtt_Screen_Rows - 1, 0);
25*4882a593Smuzhiyun SLsmg_set_color(0);
26*4882a593Smuzhiyun SLsmg_write_nstring((char *)msg, SLtt_Screen_Cols);
27*4882a593Smuzhiyun SLsmg_refresh();
28*4882a593Smuzhiyun strlcpy(ui_helpline__current, msg, sz);
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun
tui_helpline__show(const char * format,va_list ap)31*4882a593Smuzhiyun static int tui_helpline__show(const char *format, va_list ap)
32*4882a593Smuzhiyun {
33*4882a593Smuzhiyun int ret;
34*4882a593Smuzhiyun static int backlog;
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun pthread_mutex_lock(&ui__lock);
37*4882a593Smuzhiyun ret = vscnprintf(ui_helpline__last_msg + backlog,
38*4882a593Smuzhiyun sizeof(ui_helpline__last_msg) - backlog, format, ap);
39*4882a593Smuzhiyun backlog += ret;
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun tui_helpline__set = true;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun if (ui_helpline__last_msg[backlog - 1] == '\n') {
44*4882a593Smuzhiyun ui_helpline__puts(ui_helpline__last_msg);
45*4882a593Smuzhiyun SLsmg_refresh();
46*4882a593Smuzhiyun backlog = 0;
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun pthread_mutex_unlock(&ui__lock);
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun return ret;
51*4882a593Smuzhiyun }
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun struct ui_helpline tui_helpline_fns = {
54*4882a593Smuzhiyun .pop = tui_helpline__pop,
55*4882a593Smuzhiyun .push = tui_helpline__push,
56*4882a593Smuzhiyun .show = tui_helpline__show,
57*4882a593Smuzhiyun };
58*4882a593Smuzhiyun
ui_helpline__init(void)59*4882a593Smuzhiyun void ui_helpline__init(void)
60*4882a593Smuzhiyun {
61*4882a593Smuzhiyun helpline_fns = &tui_helpline_fns;
62*4882a593Smuzhiyun ui_helpline__puts(" ");
63*4882a593Smuzhiyun }
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