tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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}