mirror of
https://github.com/denoland/deno.git
synced 2024-12-29 10:39:10 -05:00
127 lines
3.4 KiB
Rust
127 lines
3.4 KiB
Rust
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
|
|
use regex::Regex;
|
|
use std::env;
|
|
use std::fmt;
|
|
use std::io::Write;
|
|
use termcolor::Color::{Ansi256, Black, Blue, Cyan, Green, Red, White, Yellow};
|
|
use termcolor::{Ansi, ColorSpec, WriteColor};
|
|
|
|
#[cfg(windows)]
|
|
use termcolor::{BufferWriter, ColorChoice};
|
|
|
|
lazy_static::lazy_static! {
|
|
// STRIP_ANSI_RE and strip_ansi_codes are lifted from the "console" crate.
|
|
// Copyright 2017 Armin Ronacher <armin.ronacher@active-4.com>. MIT License.
|
|
static ref STRIP_ANSI_RE: Regex = Regex::new(
|
|
r"[\x1b\x9b][\[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-PRZcf-nqry=><]"
|
|
).unwrap();
|
|
static ref NO_COLOR: bool = env::var_os("NO_COLOR").is_some();
|
|
}
|
|
|
|
/// Helper function to strip ansi codes.
|
|
#[cfg(test)]
|
|
pub fn strip_ansi_codes(s: &str) -> std::borrow::Cow<str> {
|
|
STRIP_ANSI_RE.replace_all(s, "")
|
|
}
|
|
|
|
pub fn use_color() -> bool {
|
|
!(*NO_COLOR)
|
|
}
|
|
|
|
#[cfg(windows)]
|
|
pub fn enable_ansi() {
|
|
BufferWriter::stdout(ColorChoice::AlwaysAnsi);
|
|
}
|
|
|
|
fn style(s: &str, colorspec: ColorSpec) -> impl fmt::Display {
|
|
if !use_color() {
|
|
return String::from(s);
|
|
}
|
|
let mut v = Vec::new();
|
|
let mut ansi_writer = Ansi::new(&mut v);
|
|
ansi_writer.set_color(&colorspec).unwrap();
|
|
ansi_writer.write_all(s.as_bytes()).unwrap();
|
|
ansi_writer.reset().unwrap();
|
|
String::from_utf8_lossy(&v).into_owned()
|
|
}
|
|
|
|
pub fn red_bold(s: &str) -> impl fmt::Display {
|
|
let mut style_spec = ColorSpec::new();
|
|
style_spec.set_fg(Some(Red)).set_bold(true);
|
|
style(&s, style_spec)
|
|
}
|
|
|
|
pub fn green_bold(s: &str) -> impl fmt::Display {
|
|
let mut style_spec = ColorSpec::new();
|
|
style_spec.set_fg(Some(Green)).set_bold(true);
|
|
style(&s, style_spec)
|
|
}
|
|
|
|
pub fn italic_bold(s: &str) -> impl fmt::Display {
|
|
let mut style_spec = ColorSpec::new();
|
|
style_spec.set_bold(true).set_italic(true);
|
|
style(&s, style_spec)
|
|
}
|
|
|
|
pub fn white_on_red(s: &str) -> impl fmt::Display {
|
|
let mut style_spec = ColorSpec::new();
|
|
style_spec.set_bg(Some(Red)).set_fg(Some(White));
|
|
style(&s, style_spec)
|
|
}
|
|
|
|
pub fn black_on_green(s: &str) -> impl fmt::Display {
|
|
let mut style_spec = ColorSpec::new();
|
|
style_spec.set_bg(Some(Green)).set_fg(Some(Black));
|
|
style(&s, style_spec)
|
|
}
|
|
|
|
pub fn yellow(s: &str) -> impl fmt::Display {
|
|
let mut style_spec = ColorSpec::new();
|
|
style_spec.set_fg(Some(Yellow));
|
|
style(&s, style_spec)
|
|
}
|
|
|
|
pub fn cyan(s: &str) -> impl fmt::Display {
|
|
let mut style_spec = ColorSpec::new();
|
|
style_spec.set_fg(Some(Cyan));
|
|
style(&s, style_spec)
|
|
}
|
|
|
|
pub fn red(s: &str) -> impl fmt::Display {
|
|
let mut style_spec = ColorSpec::new();
|
|
style_spec.set_fg(Some(Red));
|
|
style(&s, style_spec)
|
|
}
|
|
|
|
pub fn green(s: &str) -> impl fmt::Display {
|
|
let mut style_spec = ColorSpec::new();
|
|
style_spec.set_fg(Some(Green));
|
|
style(&s, style_spec)
|
|
}
|
|
|
|
pub fn bold(s: &str) -> impl fmt::Display {
|
|
let mut style_spec = ColorSpec::new();
|
|
style_spec.set_bold(true);
|
|
style(&s, style_spec)
|
|
}
|
|
|
|
pub fn gray(s: &str) -> impl fmt::Display {
|
|
let mut style_spec = ColorSpec::new();
|
|
style_spec.set_fg(Some(Ansi256(8)));
|
|
style(&s, style_spec)
|
|
}
|
|
|
|
pub fn italic_bold_gray(s: &str) -> impl fmt::Display {
|
|
let mut style_spec = ColorSpec::new();
|
|
style_spec
|
|
.set_fg(Some(Ansi256(8)))
|
|
.set_bold(true)
|
|
.set_italic(true);
|
|
style(&s, style_spec)
|
|
}
|
|
|
|
pub fn intense_blue(s: &str) -> impl fmt::Display {
|
|
let mut style_spec = ColorSpec::new();
|
|
style_spec.set_fg(Some(Blue)).set_intense(true);
|
|
style(&s, style_spec)
|
|
}
|