mirror of
https://github.com/denoland/deno.git
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134 lines
3.6 KiB
Rust
134 lines
3.6 KiB
Rust
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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use atty;
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use once_cell::sync::Lazy;
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use std::fmt;
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use std::io::Write;
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use termcolor::Color::{Ansi256, Black, Blue, Cyan, Green, Red, White, Yellow};
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use termcolor::{Ansi, ColorSpec, WriteColor};
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#[cfg(windows)]
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use termcolor::{BufferWriter, ColorChoice};
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static NO_COLOR: Lazy<bool> =
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Lazy::new(|| std::env::var_os("NO_COLOR").is_some());
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static IS_TTY: Lazy<bool> = Lazy::new(|| atty::is(atty::Stream::Stdout));
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pub fn is_tty() -> bool {
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*IS_TTY
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}
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pub fn use_color() -> bool {
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!(*NO_COLOR)
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}
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#[cfg(windows)]
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pub fn enable_ansi() {
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BufferWriter::stdout(ColorChoice::AlwaysAnsi);
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}
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fn style<S: AsRef<str>>(s: S, colorspec: ColorSpec) -> impl fmt::Display {
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if !use_color() {
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return String::from(s.as_ref());
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}
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let mut v = Vec::new();
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let mut ansi_writer = Ansi::new(&mut v);
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ansi_writer.set_color(&colorspec).unwrap();
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ansi_writer.write_all(s.as_ref().as_bytes()).unwrap();
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ansi_writer.reset().unwrap();
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String::from_utf8_lossy(&v).into_owned()
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}
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pub fn red_bold<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_fg(Some(Red)).set_bold(true);
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style(s, style_spec)
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}
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pub fn green_bold<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_fg(Some(Green)).set_bold(true);
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style(s, style_spec)
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}
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pub fn italic<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_italic(true);
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style(s, style_spec)
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}
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pub fn italic_gray<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_fg(Some(Ansi256(8))).set_italic(true);
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style(s, style_spec)
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}
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pub fn italic_bold<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_bold(true).set_italic(true);
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style(s, style_spec)
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}
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pub fn white_on_red<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_bg(Some(Red)).set_fg(Some(White));
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style(s, style_spec)
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}
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pub fn black_on_green<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_bg(Some(Green)).set_fg(Some(Black));
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style(s, style_spec)
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}
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pub fn yellow<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_fg(Some(Yellow));
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style(s, style_spec)
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}
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pub fn cyan<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_fg(Some(Cyan));
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style(s, style_spec)
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}
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pub fn red<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_fg(Some(Red));
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style(s, style_spec)
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}
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pub fn green<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_fg(Some(Green));
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style(s, style_spec)
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}
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pub fn bold<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_bold(true);
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style(s, style_spec)
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}
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pub fn gray<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_fg(Some(Ansi256(245)));
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style(s, style_spec)
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}
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pub fn intense_blue<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec.set_fg(Some(Blue)).set_intense(true);
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style(s, style_spec)
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}
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pub fn white_bold_on_red<S: AsRef<str>>(s: S) -> impl fmt::Display {
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let mut style_spec = ColorSpec::new();
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style_spec
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.set_bold(true)
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.set_bg(Some(Red))
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.set_fg(Some(White));
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style(s, style_spec)
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}
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