1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
#include <libk/stdio.h>
#include <libk/string.h>
#include <graphics.h>
#include <serial.h>
mutex_t stdio_lock;
void print_char(char c)
{
if (main_fb.x * 8 >= main_fb.width) {
main_fb.x = 0;
main_fb.y++;
}
if (main_fb.y * 16 >= main_fb.height) {
main_fb.x = 0;
main_fb.y = 0;
}
if (c == '\n') {
write_serial('\n');
main_fb.x = 0;
main_fb.y++;
return;
}
if (c == '\b') {
if (main_fb.x != 0) {
main_fb.x--;
}
return;
}
fb_draw_character(main_fb, c, (int32_t)main_fb.x * 8,
(int32_t)main_fb.y * 16);
main_fb.x++;
write_serial(c);
}
void print_string(const char *s)
{
size_t i;
for (i = 0; i < strlen(s); i++) {
print_char(s[i]);
}
}
void print_int(uint64_t num)
{
char a[100];
itos(num, a);
print_string(a);
}
void print_hex(uint64_t num)
{
char a[100];
itoh(num, a);
print_string(a);
}
void printf(const char *s, ...)
{
va_list list;
va_start(list, s);
vprintf(s, list);
va_end(list);
}
void vprintf(const char *s, va_list list)
{
lock(stdio_lock);
size_t count = 0;
size_t i;
for (i = 0; i < strlen(s); i++)
if (s[i] == '%')
count++;
for (i = 0; i < strlen(s); i++) {
if (s[i] == '%') {
i++;
if (s[i] == 'c')
print_char((char)va_arg(list, uint32_t));
else if (s[i] == 's')
print_string(va_arg(list, char *));
else if (s[i] == 'd')
print_int((uint64_t)va_arg(list, uint64_t));
else if (s[i] == 'x')
print_hex((uint64_t)va_arg(list, uint64_t));
else {
print_string("Wrong format using printf\n");
return;
}
} else
print_char(s[i]);
}
unlock(stdio_lock);
}
|
