blob: 45a0a9b8415aa9b29366c75eb3360b8e18645f28 (
plain)
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
98
99
100
101
102
103
104
105
|
module term
import os
#include <sys/ioctl.h>
#include <termios.h> // TIOCGWINSZ
pub struct C.winsize {
pub:
ws_row u16
ws_col u16
ws_xpixel u16
ws_ypixel u16
}
fn C.ioctl(fd int, request u64, arg voidptr) int
// get_terminal_size returns a number of colums and rows of terminal window.
pub fn get_terminal_size() (int, int) {
if os.is_atty(1) <= 0 || os.getenv('TERM') == 'dumb' {
return default_columns_size, default_rows_size
}
w := C.winsize{}
C.ioctl(1, u64(C.TIOCGWINSZ), &w)
return int(w.ws_col), int(w.ws_row)
}
// get_cursor_position returns a Coord containing the current cursor position
pub fn get_cursor_position() Coord {
if os.is_atty(1) <= 0 || os.getenv('TERM') == 'dumb' {
return Coord{
x: 0
y: 0
}
}
// TODO: use termios.h, C.tcgetattr & C.tcsetattr directly,
// instead of using `stty`
mut oldsettings := os.execute('stty -g')
if oldsettings.exit_code < 0 {
oldsettings = os.Result{}
}
os.system('stty -echo -icanon time 0')
print('\033[6n')
mut ch := int(0)
mut i := 0
// ESC [ YYY `;` XXX `R`
mut reading_x := false
mut reading_y := false
mut x := 0
mut y := 0
for {
ch = C.getchar()
b := byte(ch)
i++
if i >= 15 {
panic('C.getchar() called too many times')
}
// state management:
if b == `R` {
break
}
if b == `[` {
reading_y = true
reading_x = false
continue
}
if b == `;` {
reading_y = false
reading_x = true
continue
}
// converting string vals to ints:
if reading_x {
x *= 10
x += (b - byte(`0`))
}
if reading_y {
y *= 10
y += (b - byte(`0`))
}
}
// restore the old terminal settings:
os.system('stty $oldsettings.output')
return Coord{
x: x
y: y
}
}
// set_terminal_title change the terminal title
pub fn set_terminal_title(title string) bool {
if os.is_atty(1) <= 0 || os.getenv('TERM') == 'dumb' {
return true
}
print('\033]0')
print(title)
print('\007')
return true
}
// clear clears current terminal screen.
pub fn clear() {
print('\x1b[2J')
print('\x1b[H')
}
|
