1 // SPDX-License-Identifier: GPL-2.0
6 #include <linux/kernel.h>
7 #include <linux/string.h>
9 #include "../helpline.h"
11 #include "../libslang.h"
13 char ui_helpline__last_msg[1024];
14 bool tui_helpline__set;
16 static void tui_helpline__pop(void)
20 static void tui_helpline__push(const char *msg)
22 const size_t sz = sizeof(ui_helpline__current);
24 SLsmg_gotorc(SLtt_Screen_Rows - 1, 0);
26 SLsmg_write_nstring((char *)msg, SLtt_Screen_Cols);
28 strlcpy(ui_helpline__current, msg, sz);
31 static int tui_helpline__show(const char *format, va_list ap)
36 pthread_mutex_lock(&ui__lock);
37 ret = vscnprintf(ui_helpline__last_msg + backlog,
38 sizeof(ui_helpline__last_msg) - backlog, format, ap);
41 tui_helpline__set = true;
43 if (ui_helpline__last_msg[backlog - 1] == '\n') {
44 ui_helpline__puts(ui_helpline__last_msg);
48 pthread_mutex_unlock(&ui__lock);
53 struct ui_helpline tui_helpline_fns = {
54 .pop = tui_helpline__pop,
55 .push = tui_helpline__push,
56 .show = tui_helpline__show,
59 void ui_helpline__init(void)
61 helpline_fns = &tui_helpline_fns;
62 ui_helpline__puts(" ");