79 lines
2.5 KiB
Rust
79 lines
2.5 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Simple ANSI color library
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use core::io;
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use core::option;
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use core::os;
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use core::vec;
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// FIXME (#2807): Windows support.
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pub static color_black: u8 = 0u8;
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pub static color_red: u8 = 1u8;
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pub static color_green: u8 = 2u8;
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pub static color_yellow: u8 = 3u8;
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pub static color_blue: u8 = 4u8;
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pub static color_magenta: u8 = 5u8;
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pub static color_cyan: u8 = 6u8;
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pub static color_light_gray: u8 = 7u8;
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pub static color_light_grey: u8 = 7u8;
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pub static color_dark_gray: u8 = 8u8;
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pub static color_dark_grey: u8 = 8u8;
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pub static color_bright_red: u8 = 9u8;
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pub static color_bright_green: u8 = 10u8;
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pub static color_bright_yellow: u8 = 11u8;
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pub static color_bright_blue: u8 = 12u8;
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pub static color_bright_magenta: u8 = 13u8;
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pub static color_bright_cyan: u8 = 14u8;
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pub static color_bright_white: u8 = 15u8;
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pub fn esc(writer: @io::Writer) { writer.write(~[0x1bu8, '[' as u8]); }
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/// Reset the foreground and background colors to default
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pub fn reset(writer: @io::Writer) {
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esc(writer);
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writer.write(~['0' as u8, 'm' as u8]);
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}
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/// Returns true if the terminal supports color
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pub fn color_supported() -> bool {
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let supported_terms = ~[~"xterm-color", ~"xterm",
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~"screen-bce", ~"xterm-256color"];
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return match os::getenv(~"TERM") {
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option::Some(ref env) => {
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for vec::each(supported_terms) |term| {
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if *term == *env { return true; }
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}
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false
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}
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option::None => false
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};
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}
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pub fn set_color(writer: @io::Writer, first_char: u8, color: u8) {
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assert!((color < 16u8));
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esc(writer);
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let mut color = color;
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if color >= 8u8 { writer.write(~['1' as u8, ';' as u8]); color -= 8u8; }
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writer.write(~[first_char, ('0' as u8) + color, 'm' as u8]);
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}
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/// Set the foreground color
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pub fn fg(writer: @io::Writer, color: u8) {
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return set_color(writer, '3' as u8, color);
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}
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/// Set the background color
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pub fn bg(writer: @io::Writer, color: u8) {
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return set_color(writer, '4' as u8, color);
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}
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