chiro 0.1.3

A curses-style terminal view that runs inside a pixel buffer (Rewrite of chiropterm)
Documentation 
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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137

pub(super) fn box_char(mask: u8) -> Option<char> {
    // mask is one byte per edge
    //    N E S W
    // 0b00000000
    //
    // 00: no line
    // 01: single line
    // 10: double line
    // 11: double line
    // this bit fuckery makes sure that 2 becomes 3
    Some(match mask | ((mask & 0b10101010) >> 1) {
        0b00_00_00_00 => return None,
        0b01_00_00_00 => '┴',  // optional case
        0b00_00_01_00 => '┬',  // optional case
        0b01_00_01_00 |
        0b11_00_01_00 |
        0b01_00_11_00 =>
            '│',
        0b01_00_01_01 =>
            '┤',
        0b01_00_01_11 =>
            '╡',
        0b11_00_11_01 |
        0b01_00_11_01 |
        0b11_00_01_01 =>
            '╢',
        0b00_00_11_01 =>
            '╖',
        0b00_00_01_11 =>
            '╕',
        0b11_00_11_11 |
        0b01_00_11_11 |
        0b11_00_01_11 =>
            '╣',
        0b11_00_00_00 => '╨',  // optional case
        0b00_00_11_00 => '╥',  // optional case
        0b11_00_11_00 =>
            '║',
        0b00_00_11_11 =>
            '╗',
        0b11_00_00_11 =>
            '╝',
        0b11_00_00_01 =>
            '╜',
        0b01_00_00_11 =>
            '╛',
        0b00_00_01_01 =>
            '┐',
        0b01_01_00_00 =>
            '└',
        0b01_01_00_01 |
        0b01_11_00_01 |
        0b01_01_00_11 =>
            '┴',
        0b00_01_01_01 |
        0b00_11_01_01 |
        0b00_01_01_11 =>
            '┬',
        0b01_01_01_00 =>
            '├',
        0b00_01_00_00 => 
            '├', // optional case
        0b00_00_00_01 => 
            '┤', // optional case
        0b00_01_00_01 |
        0b00_11_00_01 |
        0b00_01_00_11 =>
            '─',
        0b01_01_01_01 |
        0b11_01_01_01 |
        0b01_11_01_01 |
        0b01_01_11_01 |
        0b01_01_01_11 |
        0b11_11_01_01 |
        0b01_11_11_01 |
        0b01_01_11_11 |
        0b11_01_01_11 =>
            '┼',
        0b01_11_01_00 =>
            '╞',
        0b11_01_11_00 |
        0b01_01_11_00 |
        0b11_01_01_00 =>
            '╟',
        0b11_11_00_00 =>
            '╚',
        0b00_11_11_00 =>
            '╔',
        0b11_11_00_11 |
        0b11_01_00_11 |
        0b11_11_00_01 =>
            '╩',
        0b00_11_11_11 |
        0b00_01_11_11 |
        0b00_11_11_01 =>
            '╦',
        0b11_11_11_00 |
        0b01_11_11_00 |
        0b11_11_01_00 =>
            '╠',
        0b00_11_00_00 => '╞',  // optional case
        0b00_00_00_11 => '╡',  // optional case
        0b00_11_00_11 =>
            '═',
        0b11_11_11_11 |
        0b01_11_11_11 |
        0b11_01_11_11 |
        0b11_11_01_11 |
        0b11_11_11_01 =>
            '╬',
        0b01_11_00_11 =>
            '╧',
        0b11_01_00_01 =>
            '╨',
        0b00_11_01_11 =>
            '╤',
        0b00_01_11_01 =>
            '╥',
        0b11_01_00_00 =>
            '╙',
        0b01_11_00_00 =>
            '╘',
        0b00_11_01_00 =>
            '╒',
        0b00_01_11_00 =>
            '╓',
        0b11_01_11_01 =>
            '╫',
        0b01_11_01_11 =>
            '╪',
        0b01_00_00_01 =>
            '┘',
        0b00_01_01_00 =>
            '┌',
        _ => unreachable!("confused about mask: {}", mask)
    })
}