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
|
//! Simple ANSI color library
#[forbid(deprecated_mode)];
use core::Option;
// FIXME (#2807): Windows support.
pub const color_black: u8 = 0u8;
pub const color_red: u8 = 1u8;
pub const color_green: u8 = 2u8;
pub const color_yellow: u8 = 3u8;
pub const color_blue: u8 = 4u8;
pub const color_magenta: u8 = 5u8;
pub const color_cyan: u8 = 6u8;
pub const color_light_gray: u8 = 7u8;
pub const color_light_grey: u8 = 7u8;
pub const color_dark_gray: u8 = 8u8;
pub const color_dark_grey: u8 = 8u8;
pub const color_bright_red: u8 = 9u8;
pub const color_bright_green: u8 = 10u8;
pub const color_bright_yellow: u8 = 11u8;
pub const color_bright_blue: u8 = 12u8;
pub const color_bright_magenta: u8 = 13u8;
pub const color_bright_cyan: u8 = 14u8;
pub const color_bright_white: u8 = 15u8;
pub fn esc(writer: io::Writer) { writer.write(~[0x1bu8, '[' as u8]); }
/// Reset the foreground and background colors to default
pub fn reset(writer: io::Writer) {
esc(writer);
writer.write(~['0' as u8, 'm' as u8]);
}
/// Returns true if the terminal supports color
pub fn color_supported() -> bool {
let supported_terms = ~[~"xterm-color", ~"xterm",
~"screen-bce", ~"xterm-256color"];
return match os::getenv(~"TERM") {
option::Some(ref env) => {
for vec::each(supported_terms) |term| {
if *term == *env { return true; }
}
false
}
option::None => false
};
}
pub fn set_color(writer: io::Writer, first_char: u8, color: u8) {
assert (color < 16u8);
esc(writer);
let mut color = color;
if color >= 8u8 { writer.write(~['1' as u8, ';' as u8]); color -= 8u8; }
writer.write(~[first_char, ('0' as u8) + color, 'm' as u8]);
}
/// Set the foreground color
pub fn fg(writer: io::Writer, color: u8) {
return set_color(writer, '3' as u8, color);
}
/// Set the background color
pub fn bg(writer: io::Writer, color: u8) {
return set_color(writer, '4' as u8, color);
}
// Local Variables:
// fill-column: 78;
// indent-tabs-mode: nil
// c-basic-offset: 4
// buffer-file-coding-system: utf-8-unix
// End:
|
