init

.editorconfig

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+[*]
+indent_style = tab
+tab_width = 4
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "color"
+version = "0.1.0"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.180"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bcc35a38544a891a5f7c865aca548a982ccb3b8650a5b06d0fd33a10283c56fc"

Cargo.toml

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+[package]
+name = "color"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+libc = "0.2.180"

examples/colors.rs

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+use color::{Color, NO_COLOR, TTY};
+
+fn main() {
+	println!("NO_COLOR: {:?}", *NO_COLOR);
+	println!("TTY: {:?}", *TTY);
+	println!("\nColor\tBold\tLine\tStrike\tItalic\tBg");
+	println!(
+		"{}Black\t{}Black{}\t{}Black{}\t{}Black{}\t{}Black{}\t{}{}Black{}",
+		Color::Black,
+		Color::Bold,
+		Color::ResetBold,
+		Color::Line,
+		Color::ResetLine,
+		Color::Strike,
+		Color::ResetStrike,
+		Color::Italic,
+		Color::Reset,
+		Color::White,
+		Color::BgBlack,
+		Color::Reset
+	);
+	println!(
+		"{}Red\t{}Red{}\t{}Red{}\t{}Red{}\t{}Red{}\t{}{}Red{}",
+		Color::Red,
+		Color::Bold,
+		Color::ResetBold,
+		Color::Line,
+		Color::ResetLine,
+		Color::Strike,
+		Color::ResetStrike,
+		Color::Italic,
+		Color::Reset,
+		Color::White,
+		Color::BgRed,
+		Color::Reset
+	);
+	println!(
+		"{}Green\t{}Green{}\t{}Green{}\t{}Green{}\t{}Red{}\t{}{}Green{}",
+		Color::Green,
+		Color::Bold,
+		Color::ResetBold,
+		Color::Line,
+		Color::ResetLine,
+		Color::Strike,
+		Color::ResetStrike,
+		Color::Italic,
+		Color::Reset,
+		Color::White,
+		Color::BgGreen,
+		Color::Reset
+	);
+	println!(
+		"{}Yellow\t{}Yellow{}\t{}Yellow{}\t{}Yellow{}\t{}Red{}\t{}{}Yellow{}",
+		Color::Yellow,
+		Color::Bold,
+		Color::ResetBold,
+		Color::Line,
+		Color::ResetLine,
+		Color::Strike,
+		Color::ResetStrike,
+		Color::Italic,
+		Color::Reset,
+		Color::White,
+		Color::BgYellow,
+		Color::Reset
+	);
+	println!(
+		"{}Blue\t{}Blue{}\t{}Blue{}\t{}Blue{}\t{}Red{}\t{}{}Blue{}",
+		Color::Blue,
+		Color::Bold,
+		Color::ResetBold,
+		Color::Line,
+		Color::ResetLine,
+		Color::Strike,
+		Color::ResetStrike,
+		Color::Italic,
+		Color::Reset,
+		Color::White,
+		Color::BgBlue,
+		Color::Reset
+	);
+	println!(
+		"{}Purple\t{}Purple{}\t{}Purple{}\t{}Purple{}\t{}Red{}\t{}{}Purple{}",
+		Color::Purple,
+		Color::Bold,
+		Color::ResetBold,
+		Color::Line,
+		Color::ResetLine,
+		Color::Strike,
+		Color::ResetStrike,
+		Color::Italic,
+		Color::Reset,
+		Color::White,
+		Color::BgPurple,
+		Color::Reset
+	);
+	println!(
+		"{}Cyan\t{}Cyan{}\t{}Cyan{}\t{}Cyan{}\t{}Red{}\t{}{}Cyan{}",
+		Color::Cyan,
+		Color::Bold,
+		Color::ResetBold,
+		Color::Line,
+		Color::ResetLine,
+		Color::Strike,
+		Color::ResetStrike,
+		Color::Italic,
+		Color::Reset,
+		Color::White,
+		Color::BgCyan,
+		Color::Reset
+	);
+	println!(
+		"{}White\t{}White{}\t{}White{}\t{}White{}\t{}Red{}\t{}{}White{}",
+		Color::White,
+		Color::Bold,
+		Color::ResetBold,
+		Color::Line,
+		Color::ResetLine,
+		Color::Strike,
+		Color::ResetStrike,
+		Color::Italic,
+		Color::Reset,
+		Color::Black,
+		Color::BgWhite,
+		Color::Reset
+	);
+}

src/lib.rs

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+use libc::{STDOUT_FILENO, isatty};
+
+use std::env::var_os;
+use std::sync::LazyLock;
+
+pub static NO_COLOR: LazyLock<bool> = LazyLock::new(|| var_os("NO_COLOR").is_some());
+
+pub static TTY: LazyLock<bool> = LazyLock::new(|| unsafe { isatty(STDOUT_FILENO) } != 0);
+
+pub enum Color {
+	Black,
+	Red,
+	Green,
+	Yellow,
+	Blue,
+	Purple,
+	Cyan,
+	White,
+	BgBlack,
+	BgRed,
+	BgGreen,
+	BgYellow,
+	BgBlue,
+	BgPurple,
+	BgCyan,
+	BgWhite,
+	Bold,
+	Italic,
+	Line,
+	Strike,
+	Reset,
+	ResetBold,
+	ResetItalic,
+	ResetLine,
+	ResetStrike,
+}
+
+impl std::fmt::Display for Color {
+	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+		write!(f, "{}", self.as_str())
+	}
+}
+
+impl Color {
+	fn as_str(&self) -> &'static str {
+		if *NO_COLOR || !*TTY {
+			""
+		} else {
+			match self {
+				Self::Black => "\x1b[0;30m",
+				Self::Red => "\x1b[0;31m",
+				Self::Green => "\x1b[0;32m",
+				Self::Yellow => "\x1b[0;33m",
+				Self::Blue => "\x1b[0;34m",
+				Self::Purple => "\x1b[0;35m",
+				Self::Cyan => "\x1b[0;36m",
+				Self::White => "\x1b[0;37m",
+				Self::BgBlack => "\x1b[40m",
+				Self::BgRed => "\x1b[0;41m",
+				Self::BgGreen => "\x1b[42m",
+				Self::BgYellow => "\x1b[43m",
+				Self::BgBlue => "\x1b[44m",
+				Self::BgPurple => "\x1b[45m",
+				Self::BgCyan => "\x1b[46m",
+				Self::BgWhite => "\x1b[47m",
+				Self::Bold => "\x1b[1m",
+				Self::Italic => "\x1b[3m",
+				Self::Line => "\x1b[4m",
+				Self::Strike => "\x1b[9m",
+				Self::Reset => "\x1b[0m",
+				Self::ResetBold => "\x1b[22m",
+				Self::ResetItalic => "\x1b[23m",
+				Self::ResetLine => "\x1b[24m",
+				Self::ResetStrike => "\x1b[29m",
+			}
+		}
+	}
+}