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3a4d88475b
A lot of its functionality is unused still, but the goal it to slowly
migrate logging functionality to it. There is also a useful progress bar
which can be ported over later - it depends on this module.
4c1fa54d10/src/cargo/util/progress.rs
90 lines
2.1 KiB
Rust
90 lines
2.1 KiB
Rust
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
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// TODO(ry) Rename this file to colors.rs
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// TODO(ry) Replace ansi_term with termcolor.
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use ansi_term::Color::Black;
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use ansi_term::Color::Fixed;
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use ansi_term::Color::Red;
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use ansi_term::Color::White;
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use ansi_term::Style;
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use regex::Regex;
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use std::env;
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use std::fmt;
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lazy_static! {
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// STRIP_ANSI_RE and strip_ansi_codes are lifted from the "console" crate.
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// Copyright 2017 Armin Ronacher <armin.ronacher@active-4.com>. MIT License.
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static ref STRIP_ANSI_RE: Regex = Regex::new(
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r"[\x1b\x9b][\[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-PRZcf-nqry=><]"
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).unwrap();
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static ref NO_COLOR: bool = {
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env::var_os("NO_COLOR").is_some()
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};
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}
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/// Helper function to strip ansi codes.
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#[cfg(test)]
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pub fn strip_ansi_codes(s: &str) -> std::borrow::Cow<str> {
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STRIP_ANSI_RE.replace_all(s, "")
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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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pub fn red_bold(s: String) -> impl fmt::Display {
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let mut style = Style::new();
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if use_color() {
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style = style.bold().fg(Red);
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}
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style.paint(s)
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}
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pub fn italic_bold(s: String) -> impl fmt::Display {
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let mut style = Style::new();
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if use_color() {
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style = style.italic().bold();
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}
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style.paint(s)
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}
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pub fn black_on_white(s: String) -> impl fmt::Display {
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let mut style = Style::new();
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if use_color() {
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style = style.on(White).fg(Black);
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}
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style.paint(s)
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}
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pub fn yellow(s: String) -> impl fmt::Display {
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let mut style = Style::new();
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if use_color() {
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// matches TypeScript's ForegroundColorEscapeSequences.Yellow
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style = style.fg(Fixed(11));
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}
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style.paint(s)
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}
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pub fn cyan(s: String) -> impl fmt::Display {
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let mut style = Style::new();
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if use_color() {
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// matches TypeScript's ForegroundColorEscapeSequences.Cyan
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style = style.fg(Fixed(14));
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}
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style.paint(s)
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}
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pub fn red(s: String) -> impl fmt::Display {
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let mut style = Style::new();
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if use_color() {
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style = style.fg(Red);
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}
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style.paint(s)
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}
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pub fn bold(s: String) -> impl fmt::Display {
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let mut style = Style::new();
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if use_color() {
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style = style.bold();
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}
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style.paint(s)
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}
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