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 "libslang.h"
 9
10void ui_helpline__pop(void)
11{
12}
13
14char ui_helpline__current[512];
15
16void ui_helpline__push(const char *msg)
17{
18	const size_t sz = sizeof(ui_helpline__current);
19
20	SLsmg_gotorc(SLtt_Screen_Rows - 1, 0);
21	SLsmg_set_color(0);
22	SLsmg_write_nstring((char *)msg, SLtt_Screen_Cols);
23	SLsmg_refresh();
24	strncpy(ui_helpline__current, msg, sz)[sz - 1] = '\0';
25}
26
27void ui_helpline__vpush(const char *fmt, va_list ap)
28{
29	char *s;
30
31	if (vasprintf(&s, fmt, ap) < 0)
32		vfprintf(stderr, fmt, ap);
33	else {
34		ui_helpline__push(s);
35		free(s);
36	}
37}
38
39void ui_helpline__fpush(const char *fmt, ...)
40{
41	va_list ap;
42
43	va_start(ap, fmt);
44	ui_helpline__vpush(fmt, ap);
45	va_end(ap);
46}
47
48void ui_helpline__puts(const char *msg)
49{
50	ui_helpline__pop();
51	ui_helpline__push(msg);
52}
53
54void ui_helpline__init(void)
55{
56	ui_helpline__puts(" ");
57}
58
59char ui_helpline__last_msg[1024];
60
61int ui_helpline__show_help(const char *format, va_list ap)
62{
63	int ret;
64	static int backlog;
65
66	pthread_mutex_lock(&ui__lock);
67	ret = vscnprintf(ui_helpline__last_msg + backlog,
68			sizeof(ui_helpline__last_msg) - backlog, format, ap);
69	backlog += ret;
70
71	if (ui_helpline__last_msg[backlog - 1] == '\n') {
72		ui_helpline__puts(ui_helpline__last_msg);
73		SLsmg_refresh();
74		backlog = 0;
75	}
76	pthread_mutex_unlock(&ui__lock);
77
78	return ret;
79}