1 // SPDX-License-Identifier: GPL-2.0
2 #include <stdio.h>
3 #include <stdlib.h>
4 #include <string.h>
5 #include <linux/kernel.h>
6 #include <linux/string.h>
7
8 #include "../helpline.h"
9 #include "../ui.h"
10 #include "../libslang.h"
11
12 char ui_helpline__last_msg[1024];
13 bool tui_helpline__set;
14
tui_helpline__pop(void)15 static void tui_helpline__pop(void)
16 {
17 }
18
tui_helpline__push(const char * msg)19 static void tui_helpline__push(const char *msg)
20 {
21 const size_t sz = sizeof(ui_helpline__current);
22
23 SLsmg_gotorc(SLtt_Screen_Rows - 1, 0);
24 SLsmg_set_color(0);
25 SLsmg_write_nstring(msg, SLtt_Screen_Cols);
26 SLsmg_refresh();
27 strlcpy(ui_helpline__current, msg, sz);
28 }
29
tui_helpline__show(const char * format,va_list ap)30 static int tui_helpline__show(const char *format, va_list ap)
31 {
32 int ret;
33 static int backlog;
34
35 mutex_lock(&ui__lock);
36 ret = vscnprintf(ui_helpline__last_msg + backlog,
37 sizeof(ui_helpline__last_msg) - backlog, format, ap);
38 backlog += ret;
39
40 tui_helpline__set = true;
41
42 if (ui_helpline__last_msg[backlog - 1] == '\n') {
43 ui_helpline__puts(ui_helpline__last_msg);
44 SLsmg_refresh();
45 backlog = 0;
46 }
47 mutex_unlock(&ui__lock);
48
49 return ret;
50 }
51
52 struct ui_helpline tui_helpline_fns = {
53 .pop = tui_helpline__pop,
54 .push = tui_helpline__push,
55 .show = tui_helpline__show,
56 };
57
ui_helpline__init(void)58 void ui_helpline__init(void)
59 {
60 helpline_fns = &tui_helpline_fns;
61 ui_helpline__puts(" ");
62 }
63