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{"files":{"Cargo.toml":"7de20a74b3fd6c17d816363702d8e31404882b4917f2ea2d4bddbd636c5b36e6","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"ce1f970284c4ab06e90671a984086692dc44da3e2b8ee86444d79b6f77bcf9e7","README.md":"68b88ba6234790f5e4b9fc3e7923192e74629ec5211742961324e29417c9fedb","src/color.rs":"8242495e4890dc2e46b8a7b95a9a42f0561b19af7b478c9332db97b3a5f33dad","src/lib.rs":"489a80d7e31a75d8cc8df610e4d507cdfb5a2badd25a29b390a2e66d6fa20daf","src/macros.rs":"73c8ec577907f937b1a2040c81f3bc173379e6b420a16f5704b69cc2872f0ffa","src/paint.rs":"b11f28923d51818244481a879ba96653288f9da9dac8952aacdb5a715e15c1b3","src/style.rs":"50e50a22a23847e4a409734454485081b70666bf7c9697e70a7eff4a9480d9b3","src/tests.rs":"c45bb10aacccf61599e1a98a1906c8e0fe206032605245f6c9f6ce2dfd8ffd41","src/windows.rs":"b0df2a812d23d8ce6e8b243f6e237d02892ff89b33670e6e5c788ba699b1f7dc"},"package":"09041cd90cf85f7f8b2df60c646f853b7f535ce68f85244eb6731cf89fa498ec"}

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# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
#
# When uploading crates to the registry Cargo will automatically
# "normalize" Cargo.toml files for maximal compatibility
# with all versions of Cargo and also rewrite `path` dependencies
# to registry (e.g., crates.io) dependencies.
#
# If you are reading this file be aware that the original Cargo.toml
# will likely look very different (and much more reasonable).
# See Cargo.toml.orig for the original contents.
[package]
name = "yansi"
version = "0.5.1"
authors = ["Sergio Benitez <sb@sergio.bz>"]
description = "A dead simple ANSI terminal color painting library."
documentation = "https://docs.rs/yansi"
readme = "README.md"
keywords = [
"ansi",
"terminal",
"color",
"format",
"paint",
]
categories = ["command-line-interface"]
license = "MIT/Apache-2.0"
repository = "https://github.com/SergioBenitez/yansi"
[dependencies]
[dev-dependencies.serial_test]
version = "0.6"
[badges.travis-ci]
branch = "master"
repository = "SergioBenitez/yansi"

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The MIT License (MIT)
Copyright (c) 2017 Sergio Benitez
Permission is hereby granted, free of charge, to any person obtaining a copy of
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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# yansi
[![Build Status](https://travis-ci.org/SergioBenitez/yansi.svg?branch=master)](https://travis-ci.org/SergioBenitez/yansi)
[![Current Crates.io Version](https://img.shields.io/crates/v/yansi.svg)](https://crates.io/crates/yansi)
[![Documentation](https://docs.rs/yansi/badge.svg)](https://docs.rs/yansi)
A dead simple ANSI terminal color painting library for Rust.
```rust
use yansi::Paint;
print!("{} light, {} light!", Paint::green("Green"), Paint::red("red").underline());
```
See the [documentation](https://docs.rs/yansi/) for more.
# Why?
Several terminal coloring libraries exist ([`ansi_term`], [`colored`],
[`term_painter`], to name a few), begging the question: why yet another? Here
are a few reasons:
* This library is _much_ simpler: there are three types!
* Unlike [`ansi_term`] or [`colored`], _any_ type implementing `Display`
or `Debug` can be stylized, not only strings.
* Styling can be enabled and disabled globally, on the fly.
* Arbitrary items can be [_masked_] for selective disabling.
* Styling can [_wrap_] any arbitrarily styled item.
* Typically only one type needs to be imported: `Paint`.
* Zero dependencies. It really is simple.
* The name `yansi` is pretty short.
All that being said, this library borrows API ideas from the three libraries as
well as implementation details from [`ansi_term`].
[`ansi_term`]: https://crates.io/crates/ansi_term
[`colored`]: https://crates.io/crates/colored
[`term_painter`]: https://crates.io/crates/term-painter
[_masked_]: https://docs.rs/yansi/#masking
[_wrap_]: https://docs.rs/yansi/#wrapping
## License
`yansi` is licensed under either of the following, at your option:
* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
* MIT License ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)

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use std::fmt;
use {Paint, Style};
/// An enum representing an ANSI color code.
#[derive(Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Copy, Clone)]
pub enum Color {
/// No color has been set. Nothing is changed when applied.
Unset,
/// Terminal default #9. (foreground code `39`, background code `49`).
Default,
/// Black #0 (foreground code `30`, background code `40`).
Black,
/// Red: #1 (foreground code `31`, background code `41`).
Red,
/// Green: #2 (foreground code `32`, background code `42`).
Green,
/// Yellow: #3 (foreground code `33`, background code `43`).
Yellow,
/// Blue: #4 (foreground code `34`, background code `44`).
Blue,
/// Magenta: #5 (foreground code `35`, background code `45`).
Magenta,
/// Cyan: #6 (foreground code `36`, background code `46`).
Cyan,
/// White: #7 (foreground code `37`, background code `47`).
White,
/// A color number from 0 to 255, for use in 256-color terminals.
Fixed(u8),
/// A 24-bit RGB color, as specified by ISO-8613-3.
RGB(u8, u8, u8),
}
impl Color {
/// Constructs a new `Paint` structure that encapsulates `item` with the
/// foreground color set to the color `self`.
///
/// ```rust
/// use yansi::Color::Blue;
///
/// println!("This is going to be blue: {}", Blue.paint("yay!"));
/// ```
#[inline]
pub fn paint<T>(self, item: T) -> Paint<T> {
Paint::new(item).fg(self)
}
/// Constructs a new `Style` structure with the foreground color set to the
/// color `self`.
///
/// ```rust
/// use yansi::Color::Green;
///
/// let success = Green.style().bold();
/// println!("Hey! {}", success.paint("Success!"));
/// ```
#[inline]
pub fn style(self) -> Style {
Style::new(self)
}
pub(crate) fn ascii_fmt(&self, f: &mut fmt::Write) -> fmt::Result {
match *self {
Color::Unset => Ok(()),
Color::Default => write!(f, "9"),
Color::Black => write!(f, "0"),
Color::Red => write!(f, "1"),
Color::Green => write!(f, "2"),
Color::Yellow => write!(f, "3"),
Color::Blue => write!(f, "4"),
Color::Magenta => write!(f, "5"),
Color::Cyan => write!(f, "6"),
Color::White => write!(f, "7"),
Color::Fixed(num) => write!(f, "8;5;{}", num),
Color::RGB(r, g, b) => write!(f, "8;2;{};{};{}", r, g, b),
}
}
}
impl Default for Color {
#[inline(always)]
fn default() -> Self {
Color::Unset
}
}

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#![doc(html_root_url = "https://docs.rs/yansi/0.6.0-dev")]
//! A dead simple ANSI terminal color painting library.
//!
//! # Usage
//!
//! Usage is best illustrated via a quick example:
//!
//! ```rust
//! use yansi::{Paint, Color};
//!
//! println!("Testing, {}, {}, {}!",
//! Paint::red(1),
//! Paint::green(2).bold().underline(),
//! Paint::blue("3").bg(Color::White).italic());
//! ```
//!
//! ## Paint
//!
//! The main entry point into this library is the [`Paint`] type. `Paint`
//! encapsulates a value of any type that implements the [`Display`] or
//! [`Debug`] trait. When a `Paint` is `Display`ed or `Debug`ed, the appropriate
//! ANSI escape characters are emitted before and after the wrapped type's `fmt`
//! implementation.
//!
//! `Paint` can be constructed via [a myriad of methods]. In addition to these
//! constructors, you can also use the [`color.paint()`](Color::paint()) method
//! on a given [`Color`] value to construct a `Paint` type. Both of these
//! approaches are shown below:
//!
//! ```rust
//! use yansi::Paint;
//! use yansi::Color::Red;
//!
//! println!("I'm {}!", Paint::red("red").bold());
//! println!("I'm also {}!", Red.paint("red").bold());
//! ```
//! [`Display`]: ::std::fmt::Display
//! [`Debug`]: ::std::fmt::Debug
//! [a myriad of methods]: struct.Paint.html#unstyled-constructors
//!
//! ## Styling
//!
//! Modifications to the styling of an item can be made via [a number of
//! chainable methods] on `Paint`.
//!
//! ```rust
//! use yansi::Paint;
//!
//! Paint::new("hi").underline().invert().italic().dimmed().bold();
//! ```
//!
//! Styling can also be created independently from a `Paint` structure via the
//! [`Style`] structure. This allows common styling to be stored and reused. A
//! `Style` can be applied via the [`style.paint()`] method or the
//! [`paint.with_style()`] method:
//!
//! ```rust
//! use yansi::{Paint, Color, Style};
//!
//! // A bold, itatlic style with red foreground.
//! let alert = Style::new(Color::Red).bold().italic();
//!
//! // Using `style.paint()`; this is preferred.
//! println!("Alert! {}", alert.paint("This is serious business!"));
//! println!("Hi! {}", alert.underline().paint("Super serious!"));
//!
//! // Using `paint.with_style()`.
//! println!("Alert! {}", Paint::new("Yet another.").with_style(alert));
//! ```
//!
//! [a number of chainable methods]: struct.Paint.html#setters
//! [`style.paint()`]: Style::paint()
//! [`paint.with_style()`]: Paint::with_style()
//!
//! # Disabling
//!
//! Painting can be disabled globally via the [`Paint::disable()`] method. When
//! painting is disabled, the `Display` and `Debug` implementations for `Paint`
//! will emit the `Display` or `Debug` of the contained object and nothing else.
//! Painting can be reenabled via the [`Paint::enable()`] method.
//!
//! One potential use of this feature is to allow users to control color ouput
//! via an environment variable. For instance, to disable coloring if the
//! `CLICOLOR` variable is set to `0`, you might write:
//!
//! ```rust
//! # { if false { // we don't actually want to disable coloring
//! use yansi::Paint;
//!
//! if let Ok(true) = std::env::var("CLICOLOR").map(|v| v == "0") {
//! Paint::disable();
//! }
//! # } }
//! ```
//!
//! ## Masking
//!
//! Items can be arbitrarily _masked_. When an item is masked and painting is
//! disabled, the `Display` and `Debug` implementations of `Paint` write
//! nothing. This allows you to selectively omit output when painting is
//! disabled. Values can be masked using the [`Paint::masked()`] constructor
//! or [`paint.mask()`] and [`style.mask()`] style setters.
//!
//! [`paint.mask()`]: Paint::mask()
//! [`style.mask()`]: Style::mask()
//!
//! One use for this feature is to print certain characters only when painting
//! is enabled. For instance, you might wish to emit the 🎨 emoji when
//! coloring is enabled but not otherwise. This can be accomplished by masking
//! the emoji:
//!
//! ```rust
//! use yansi::Paint;
//!
//! println!("I like colors!{}", Paint::masked(" 🎨"));
//! ```
//!
//! This will print "I like colors! 🎨" when painting is enabled and "I like
//! colors!" when painting is disabled.
//!
//! ## Wrapping
//!
//! Styling can be set to _wrap_ existing styles using either the
//! [`Paint::wrapping()`] constructor or the [`paint.wrap()`] and
//! [`style.wrap()`] style setters. When a style is _wrapping_, all color
//! resets written out by the internal item's `Display` or `Debug`
//! implementation are set to the styling of the wrapping style itself. In other
//! words, the "default" style of the wrapped item is modified to be the
//! wrapping style. This allows for easy wrapping of other colored text. Without
//! this feature, the console would reset styling to the terminal's default
//! style instead of the wrapping style.
//!
//! [`paint.wrap()`]: Paint::wrap()
//! [`style.wrap()`]: Style::wrap()
//!
//! One use for this feature is to ensure that styling is consistently set
//! across items that may already be styled, such as when logging.
//!
//! ```rust
//! use yansi::{Paint, Color};
//!
//! let inner = format!("{} and {}", Paint::red("Stop"), Paint::green("Go"));
//! println!("Hey! {}", Paint::wrapping(inner).fg(Color::Blue));
//! ```
//!
//! This will print 'Hey!' unstyled, "Stop" in red, "and" in blue, and "Go" in
//! green. Without wrapping, "and" would be unstyled as `Paint::red()` resets
//! the style after printing the internal item.
//!
//! # Windows
//!
//! Coloring is supported on Windows beginning with the Windows 10 anniversary
//! update. Since this update, Windows consoles support ANSI escape sequences.
//! This support, however, must be explicitly enabled. `yansi` provides the
//! [`Paint::enable_windows_ascii()`] method to enable ASCII support on Windows
//! consoles when available.
//!
//! ```rust
//! use yansi::Paint;
//!
//! // Enable ASCII escape sequence support on Windows consoles.
//! Paint::enable_windows_ascii();
//! ```
//!
//! You may wish to disable coloring on unsupported Windows consoles to avoid
//! emitting unrecognized ASCII escape sequences:
//!
//! ```rust
//! use yansi::Paint;
//!
//! if cfg!(windows) && !Paint::enable_windows_ascii() {
//! Paint::disable();
//! }
//! ```
//!
//! [`Paint::enable_windows_ascii()`]: Paint::enable_windows_ascii()
//!
//! # Why?
//!
//! Several terminal coloring libraries exist ([`ansi_term`], [`colored`],
//! [`term_painter`], to name a few), begging the question: why yet another?
//! Here are a few reasons:
//!
//! * This library is _much_ simpler: there are three types!
//! * Unlike [`ansi_term`] or [`colored`], _any_ type implementing `Display`
//! or `Debug` can be stylized, not only strings.
//! * Styling can be enabled and disabled globally, on the fly.
//! * Arbitrary items can be [_masked_] for selective disabling.
//! * Styling can [_wrap_] any arbitrarily styled item.
//! * Typically only one type needs to be imported: [`Paint`].
//! * Zero dependencies. It really is simple.
//! * The name `yansi` is pretty short.
//!
//! All that being said, this library borrows API ideas from the three libraries
//! as well as implementation details from [`ansi_term`].
//!
//! [`ansi_term`]: https://crates.io/crates/ansi_term
//! [`colored`]: https://crates.io/crates/colored
//! [`term_painter`]: https://crates.io/crates/term-painter
//! [_masked_]: #masking
//! [_wrap_]: #wrapping
#[macro_use] mod macros;
#[cfg(test)] mod tests;
mod windows;
mod paint;
mod style;
mod color;
pub use color::Color;
pub use style::Style;
pub use paint::Paint;

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macro_rules! style_builder_for {
($T:ty, |$s:ident| $props:expr, $($name:ident: $property:ident),*) => ($(
#[doc = concat!(
"Enables the _", stringify!($name), "_ style on `self`.\n",
"```rust\n",
"use yansi::Paint;\n",
"\n",
"println!(\"Using ", stringify!($name), ": {}\", ",
"Paint::new(\"hi\").", stringify!($name), "());\n",
"```\n"
)]
#[inline]
pub fn $name(self) -> $T {
let mut $s = self;
$props.set(Property::$property);
$s
}
)*)
}

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use std::fmt;
use style::{Style, Property};
use color::Color;
/// A structure encapsulating an item and styling.
///
/// See the [crate level documentation](./) for usage information.
///
/// # Method Glossary
///
/// The `Paint` structure exposes many methods for convenience.
///
/// ### Unstyled Constructors
///
/// Return a new `Paint` structure with no or default styling applied.
///
/// * [`Paint::new(item: T)`](Paint::new())
/// * [`Paint::default(item: T)`](Paint::default())
/// * [`Paint::masked(item: T)`](Paint::masked())
/// * [`Paint::wrapping(item: T)`](Paint::wrapping())
///
/// ### Foreground Color Constructors
///
/// Return a new `Paint` structure with a foreground color applied.
///
/// * [`Paint::rgb(r: u8, g: u8, b: u8, item: T)`](Paint::rgb())
/// * [`Paint::fixed(color: u8, item: T)`](Paint::fixed())
/// * [`Paint::black(item: T)`](Paint::black())
/// * [`Paint::red(item: T)`](Paint::red())
/// * [`Paint::green(item: T)`](Paint::green())
/// * [`Paint::yellow(item: T)`](Paint::yellow())
/// * [`Paint::blue(item: T)`](Paint::blue())
/// * [`Paint::magenta(item: T)`](Paint::magenta())
/// * [`Paint::cyan(item: T)`](Paint::cyan())
/// * [`Paint::white(item: T)`](Paint::white())
///
/// ### Getters
///
/// Return information about the `Paint` structure.
///
/// * [`paint.style()`](Paint::style())
/// * [`paint.inner()`](Paint::inner())
///
/// ### Setters
///
/// Set a style property on a given `Paint` structure.
///
/// * [`paint.with_style(style: Style)`](Paint::with_style())
/// * [`paint.mask()`](Paint::mask())
/// * [`paint.wrap()`](Paint::wrap())
/// * [`paint.fg(color: Color)`](Paint::fg())
/// * [`paint.bg(color: Color)`](Paint::bg())
/// * [`paint.bold()`](Paint::bold())
/// * [`paint.dimmed()`](Paint::dimmed())
/// * [`paint.italic()`](Paint::italic())
/// * [`paint.underline()`](Paint::underline())
/// * [`paint.blink()`](Paint::blink())
/// * [`paint.invert()`](Paint::invert())
/// * [`paint.hidden()`](Paint::hidden())
/// * [`paint.strikethrough()`](Paint::strikethrough())
///
/// These methods can be chained:
///
/// ```rust
/// use yansi::Paint;
///
/// Paint::new("hi").underline().invert().italic().dimmed().bold();
/// ```
///
/// ### Global Methods
///
/// Modify or observe the global behavior of painting.
///
/// * [`Paint::enable()`](Paint::enable())
/// * [`Paint::disable()`](Paint::disable())
/// * [`Paint::is_enabled()`](Paint::is_enabled())
/// * [`Paint::enable_windows_ascii()`](Paint::enable_windows_ascii())
#[derive(Default, Eq, PartialEq, Ord, PartialOrd, Hash, Copy, Clone)]
pub struct Paint<T> {
item: T,
style: Style,
}
macro_rules! constructors_for {
($T:ty, $($name:ident: $color:ident),*) => ($(
#[doc = concat!(
"Constructs a new `Paint` structure encapsulating `item` with the foreground color\n",
"set to ", stringify!($name), ".\n",
"```rust\n",
"use yansi::Paint;\n",
"\n",
"println!(\"This is going to be ", stringify!($name),
": {}\", Paint::", stringify!($name), "(\"yay!\"));\n",
"```\n"
)]
#[inline]
pub fn $name(item: $T) -> Paint<$T> {
Paint::new(item).fg(Color::$color)
}
)*)
}
impl<T> Paint<T> {
/// Constructs a new `Paint` structure encapsulating `item` with no set
/// styling.
///
/// ```rust
/// use yansi::Paint;
///
/// assert_eq!(Paint::new("hello!").to_string(), "hello!".to_string());
/// ```
#[inline]
pub fn new(item: T) -> Paint<T> {
Paint { item, style: Style::default() }
}
/// Constructs a new `Paint` structure encapsulating `item` with the active
/// terminal's default foreground and background.
///
/// ```rust
/// use yansi::Paint;
///
/// println!("This is going to use {}!", Paint::default("default colors"));
/// ```
#[inline]
pub fn default(item: T) -> Paint<T> {
Paint::new(item).fg(Color::Default).bg(Color::Default)
}
/// Constructs a new _masked_ `Paint` structure encapsulating `item` with
/// no set styling.
///
/// A masked `Paint` is not written out when painting is disabled during
/// `Display` or `Debug` invocations. When painting is enabled, masking has
/// no effect.
///
/// ```rust
/// use yansi::Paint;
///
/// // The emoji won't be printed when coloring is disabled.
/// println!("{}Sprout!", Paint::masked("🌱 "));
/// ```
#[inline]
pub fn masked(item: T) -> Paint<T> {
Paint::new(item).mask()
}
/// Constructs a new _wrapping_ `Paint` structure encapsulating `item` with
/// default styling.
///
/// A wrapping `Paint` converts all color resets written out by the internal
/// value to the styling of itself. This allows for seamless color wrapping
/// of other colored text.
///
/// # Performance
///
/// In order to wrap an internal value, the internal value must first be
/// written out to a local buffer and examined. As a result, displaying a
/// wrapped value is likely to result in a heap allocation and copy.
///
/// # Example
///
/// ```rust
/// use yansi::{Paint, Color};
///
/// let inner = format!("{} and {}", Paint::red("Stop"), Paint::green("Go"));
///
/// // 'Hey!' will be unstyled, "Stop" will be red, "and" will be blue, and
/// // "Go" will be green. Without a wrapping `Paint`, "and" would be
/// // unstyled.
/// println!("Hey! {}", Paint::wrapping(inner).fg(Color::Blue));
/// ```
#[inline]
pub fn wrapping(item: T) -> Paint<T> {
Paint::new(item).wrap()
}
/// Constructs a new `Paint` structure encapsulating `item` with the
/// foreground color set to the RGB color `r`, `g`, `b`.
///
/// ```rust
/// use yansi::Paint;
///
/// println!("This is going to be funky: {}", Paint::rgb(70, 130, 122, "hi!"));
/// ```
#[inline]
pub fn rgb(r: u8, g: u8, b: u8, item: T) -> Paint<T> {
Paint::new(item).fg(Color::RGB(r, g, b))
}
/// Constructs a new `Paint` structure encapsulating `item` with the
/// foreground color set to the fixed 8-bit color `color`.
///
/// ```rust
/// use yansi::Paint;
///
/// println!("This is going to be funky: {}", Paint::fixed(100, "hi!"));
/// ```
#[inline]
pub fn fixed(color: u8, item: T) -> Paint<T> {
Paint::new(item).fg(Color::Fixed(color))
}
constructors_for!(T, black: Black, red: Red, green: Green, yellow: Yellow,
blue: Blue, magenta: Magenta, cyan: Cyan, white: White);
/// Retrieves the style currently set on `self`.
///
/// ```rust
/// use yansi::{Style, Color, Paint};
///
/// let alert = Style::new(Color::Red).bold().underline();
/// let painted = Paint::red("hi").bold().underline();
///
/// assert_eq!(alert, painted.style());
/// ```
#[inline]
pub fn style(&self) -> Style {
self.style
}
/// Retrieves a borrow to the inner item.
///
/// ```rust
/// use yansi::Paint;
///
/// let x = Paint::red("Hello, world!");
/// assert_eq!(*x.inner(), "Hello, world!");
/// ```
#[inline]
pub fn inner(&self) -> &T {
&self.item
}
/// Sets the style of `self` to `style`.
///
/// Any styling currently set on `self` is lost. Prefer to use the
/// [`style.paint()`](Style::paint()) method to create a `Paint` struct from
/// `Style`.
///
/// ```rust
/// use yansi::{Paint, Color, Style};
///
/// let s = Style::new(Color::Red).bold().underline();
///
/// // Using this method.
/// println!("Alert: {}", Paint::new("This thing happened!").with_style(s));
///
/// // Using the `style.paint()` method.
/// println!("Alert: {}", s.paint("This thing happened!"));
/// ```
#[inline]
pub fn with_style(mut self, style: Style) -> Paint<T> {
self.style = style;
self
}
/// Masks `self`.
///
/// A masked `Paint` is not written out when painting is disabled during
/// `Display` or `Debug` invocations. When painting is enabled, masking has
/// no effect.
///
/// ```rust
/// use yansi::Paint;
///
/// // "Whoops! " will only print when coloring is enabled.
/// println!("{}Something happened.", Paint::red("Whoops! ").mask());
/// ```
#[inline]
pub fn mask(mut self) -> Paint<T> {
self.style.masked = true;
self
}
/// Makes `self` a _wrapping_ `Paint`.
///
/// A wrapping `Paint` converts all color resets written out by the internal
/// value to the styling of itself. This allows for seamless color wrapping
/// of other colored text.
///
/// # Performance
///
/// In order to wrap an internal value, the internal value must first be
/// written out to a local buffer and examined. As a result, displaying a
/// wrapped value is likely to result in a heap allocation and copy.
///
/// # Example
///
/// ```rust
/// use yansi::{Paint, Color};
///
/// let inner = format!("{} and {}", Paint::red("Stop"), Paint::green("Go"));
///
/// // 'Hey!' will be unstyled, "Stop" will be red, "and" will be blue, and
/// // "Go" will be green. Without a wrapping `Paint`, "and" would be
/// // unstyled.
/// println!("Hey! {}", Paint::blue(inner).wrap());
/// ```
#[inline]
pub fn wrap(mut self) -> Paint<T> {
self.style.wrap = true;
self
}
/// Sets the foreground to `color`.
///
/// ```rust
/// use yansi::Paint;
/// use yansi::Color::Red;
///
/// println!("Red foreground: {}", Paint::new("hi!").fg(Red));
/// ```
#[inline]
pub fn fg(mut self, color: Color) -> Paint<T> {
self.style.foreground = color;
self
}
/// Sets the background to `color`.
///
/// ```rust
/// use yansi::Paint;
/// use yansi::Color::Yellow;
///
/// println!("Yellow background: {}", Paint::new("hi!").bg(Yellow));
/// ```
#[inline]
pub fn bg(mut self, color: Color) -> Paint<T> {
self.style.background = color;
self
}
style_builder_for!(Paint<T>, |paint| paint.style.properties,
bold: BOLD, dimmed: DIMMED, italic: ITALIC,
underline: UNDERLINE, blink: BLINK, invert: INVERT,
hidden: HIDDEN, strikethrough: STRIKETHROUGH);
}
macro_rules! impl_fmt_trait {
($trait:ident, $fmt:expr) => (
impl<T: fmt::$trait> fmt::$trait for Paint<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
if Paint::is_enabled() && self.style.wrap {
let mut prefix = String::new();
prefix.push_str("\x1B[0m");
self.style.fmt_prefix(&mut prefix)?;
self.style.fmt_prefix(f)?;
let item = format!($fmt, self.item).replace("\x1B[0m", &prefix);
fmt::$trait::fmt(&item, f)?;
self.style.fmt_suffix(f)
} else if Paint::is_enabled() {
self.style.fmt_prefix(f)?;
fmt::$trait::fmt(&self.item, f)?;
self.style.fmt_suffix(f)
} else if !self.style.masked {
fmt::$trait::fmt(&self.item, f)
} else {
Ok(())
}
}
}
)
}
impl_fmt_trait!(Display, "{}");
impl_fmt_trait!(Debug, "{:?}");
use std::sync::atomic::AtomicBool;
use std::sync::atomic::Ordering;
static ENABLED: AtomicBool = AtomicBool::new(true);
impl Paint<()> {
/// Disables coloring globally.
///
/// # Example
///
/// ```rust
/// use yansi::Paint;
///
/// // With coloring enabled, ANSI color codes are emitted.
/// assert_ne!(Paint::green("go").to_string(), "go".to_string());
///
/// // With coloring disabled, ANSI color codes are _not_ emitted.
/// Paint::disable();
/// assert_eq!(Paint::green("go").to_string(), "go".to_string());
/// ```
pub fn disable() {
ENABLED.store(false, Ordering::Release);
}
/// Enables coloring globally. Coloring is enabled by default, so this
/// method should only be called to _re_ enable coloring.
///
/// # Example
///
/// ```rust
/// use yansi::Paint;
///
/// // With coloring disabled, ANSI color codes are _not_ emitted.
/// Paint::disable();
/// assert_eq!(Paint::green("go").to_string(), "go".to_string());
///
/// // Reenabling causes color code to be emitted.
/// Paint::enable();
/// assert_ne!(Paint::green("go").to_string(), "go".to_string());
/// ```
pub fn enable() {
ENABLED.store(true, Ordering::Release);
}
/// Returns `true` if coloring is enabled and `false` otherwise. Coloring is
/// enabled by default but can be enabled and disabled on-the-fly with the
/// [`Paint::enable()`] and [`Paint::disable()`] methods.
///
/// [`Paint::disable()`]: struct.Paint.html#method.disable
/// [`Paint::enable()`]: struct.Paint.html#method.disable
///
/// # Example
///
/// ```rust
/// use yansi::Paint;
///
/// // Coloring is enabled by default.
/// assert!(Paint::is_enabled());
///
/// // Disable it with `Paint::disable()`.
/// Paint::disable();
/// assert!(!Paint::is_enabled());
///
/// // Reenable with `Paint::enable()`.
/// Paint::enable();
/// assert!(Paint::is_enabled());
/// ```
pub fn is_enabled() -> bool {
ENABLED.load(Ordering::Acquire)
}
/// Enables ASCII terminal escape sequences on Windows consoles when
/// possible. Returns `true` if escape sequence support was successfully
/// enabled and `false` otherwise. On non-Windows targets, this method
/// always returns `true`.
///
/// Support for escape sequences in Windows consoles was added in the
/// Windows 10 anniversary update. For targets with older Windows
/// installations, this method is expected to return `false`.
///
/// # Example
///
/// ```rust
/// use yansi::Paint;
///
/// // A best-effort Windows ASCII terminal support enabling.
/// Paint::enable_windows_ascii();
/// ```
#[inline]
pub fn enable_windows_ascii() -> bool {
::windows::enable_ascii_colors()
}
}

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use std::hash::{Hash, Hasher};
use std::fmt::{self, Display};
use std::ops::BitOr;
use {Paint, Color};
#[derive(Default, Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Copy, Clone)]
pub struct Property(u8);
impl Property {
pub const BOLD: Self = Property(1 << 0);
pub const DIMMED: Self = Property(1 << 1);
pub const ITALIC: Self = Property(1 << 2);
pub const UNDERLINE: Self = Property(1 << 3);
pub const BLINK: Self = Property(1 << 4);
pub const INVERT: Self = Property(1 << 5);
pub const HIDDEN: Self = Property(1 << 6);
pub const STRIKETHROUGH: Self = Property(1 << 7);
#[inline(always)]
pub fn contains(self, other: Property) -> bool {
(other.0 & self.0) == other.0
}
#[inline(always)]
pub fn set(&mut self, other: Property) {
self.0 |= other.0;
}
#[inline(always)]
pub fn iter(self) -> Iter {
Iter { index: 0, properties: self }
}
}
impl BitOr for Property {
type Output = Self;
#[inline(always)]
fn bitor(self, rhs: Self) -> Self {
Property(self.0 | rhs.0)
}
}
pub struct Iter {
index: u8,
properties: Property,
}
impl Iterator for Iter {
type Item = usize;
fn next(&mut self) -> Option<Self::Item> {
while self.index < 8 {
let index = self.index;
self.index += 1;
if self.properties.contains(Property(1 << index)) {
return Some(index as usize);
}
}
None
}
}
/// Represents a set of styling options.
///
/// See the [crate level documentation](./) for usage information.
///
/// # Method Glossary
///
/// The `Style` structure exposes many methods for convenience. The majority of
/// these methods are shared with [`Paint`](Paint).
///
/// ### Foreground Color Constructors
///
/// Return a new `Style` structure with a foreground `color` applied.
///
/// * [`Style::new(color: Color)`](Style::new())
///
/// ### Setters
///
/// Set a style property on a given `Style` structure.
///
/// * [`style.fg(color: Color)`](Style::fg())
/// * [`style.bg(color: Color)`](Style::bg())
/// * [`style.mask()`](Style::mask())
/// * [`style.wrap()`](Style::wrap())
/// * [`style.bold()`](Style::bold())
/// * [`style.dimmed()`](Style::dimmed())
/// * [`style.italic()`](Style::italic())
/// * [`style.underline()`](Style::underline())
/// * [`style.blink()`](Style::blink())
/// * [`style.invert()`](Style::invert())
/// * [`style.hidden()`](Style::hidden())
/// * [`style.strikethrough()`](Style::strikethrough())
///
/// These methods can be chained:
///
/// ```rust
/// use yansi::{Style, Color::{Red, Magenta}};
///
/// Style::new(Red).bg(Magenta).underline().invert().italic().dimmed().bold();
/// ```
///
/// ### Converters
///
/// Convert a `Style` into another structure.
///
/// * [`style.paint<T>(item: T) -> Paint<T>`](Style::paint())
///
/// ### Getters
///
/// Return information about a `Style` structure.
///
/// * [`style.fg_color()`](Style::fg_color())
/// * [`style.bg_color()`](Style::bg_color())
/// * [`style.is_masked()`](Style::is_masked())
/// * [`style.is_wrapping()`](Style::is_wrapping())
/// * [`style.is_bold()`](Style::is_bold())
/// * [`style.is_dimmed()`](Style::is_dimmed())
/// * [`style.is_italic()`](Style::is_italic())
/// * [`style.is_underline()`](Style::is_underline())
/// * [`style.is_blink()`](Style::is_blink())
/// * [`style.is_invert()`](Style::is_invert())
/// * [`style.is_hidden()`](Style::is_hidden())
/// * [`style.is_strikethrough()`](Style::is_strikethrough())
///
/// ### Raw Formatters
///
/// Write the raw ANSI codes for a given `Style` to any `fmt::Write`.
///
/// * [`style.fmt_prefix(f: &mut fmt::Write)`](Style::fmt_prefix())
/// * [`style.fmt_suffix(f: &mut fmt::Write)`](Style::fmt_suffix())
#[repr(packed)]
#[derive(Default, Debug, Eq, Ord, PartialOrd, Copy, Clone)]
pub struct Style {
pub(crate) foreground: Color,
pub(crate) background: Color,
pub(crate) properties: Property,
pub(crate) masked: bool,
pub(crate) wrap: bool,
}
impl PartialEq for Style {
fn eq(&self, other: &Style) -> bool {
self.foreground == other.foreground
&& self.background == other.background
&& self.properties == other.properties
}
}
impl Hash for Style {
fn hash<H: Hasher>(&self, state: &mut H) {
self.foreground.hash(state);
self.background.hash(state);
self.properties.hash(state);
}
}
macro_rules! checker_for {
($($name:ident ($fn_name:ident): $property:ident),*) => ($(
#[doc = concat!(
"Returns `true` if the _", stringify!($name), "_ property is set on `self`.\n",
"```rust\n",
"use yansi::Style;\n",
"\n",
"let plain = Style::default();\n",
"assert!(!plain.", stringify!($fn_name), "());\n",
"\n",
"let styled = plain.", stringify!($name), "();\n",
"assert!(styled.", stringify!($fn_name), "());\n",
"```\n"
)]
#[inline]
pub fn $fn_name(&self) -> bool {
self.properties.contains(Property::$property)
}
)*)
}
#[inline]
fn write_spliced<T: Display>(c: &mut bool, f: &mut fmt::Write, t: T) -> fmt::Result {
if *c {
write!(f, ";{}", t)
} else {
*c = true;
write!(f, "{}", t)
}
}
impl Style {
/// Default style with the foreground set to `color` and no other set
/// properties.
///
/// ```rust
/// use yansi::Style;
///
/// let plain = Style::default();
/// assert_eq!(plain, Style::default());
/// ```
#[inline]
pub fn new(color: Color) -> Style {
Self::default().fg(color)
}
/// Sets the foreground to `color`.
///
/// ```rust
/// use yansi::{Color, Style};
///
/// let red_fg = Style::default().fg(Color::Red);
/// ```
#[inline]
pub fn fg(mut self, color: Color) -> Style {
self.foreground = color;
self
}
/// Sets the background to `color`.
///
/// ```rust
/// use yansi::{Color, Style};
///
/// let red_bg = Style::default().bg(Color::Red);
/// ```
#[inline]
pub fn bg(mut self, color: Color) -> Style {
self.background = color;
self
}
/// Sets `self` to be masked.
///
/// An item with _masked_ styling is not written out when painting is
/// disabled during `Display` or `Debug` invocations. When painting is
/// enabled, masking has no effect.
///
/// ```rust
/// use yansi::Style;
///
/// let masked = Style::default().mask();
///
/// // "Whoops! " will only print when coloring is enabled.
/// println!("{}Something happened.", masked.paint("Whoops! "));
/// ```
#[inline]
pub fn mask(mut self) -> Style {
self.masked = true;
self
}
/// Sets `self` to be wrapping.
///
/// A wrapping `Style` converts all color resets written out by the internal
/// value to the styling of itself. This allows for seamless color wrapping
/// of other colored text.
///
/// # Performance
///
/// In order to wrap an internal value, the internal value must first be
/// written out to a local buffer and examined. As a result, displaying a
/// wrapped value is likely to result in a heap allocation and copy.
///
/// ```rust
/// use yansi::{Paint, Style, Color};
///
/// let inner = format!("{} and {}", Paint::red("Stop"), Paint::green("Go"));
/// let wrapping = Style::new(Color::Blue).wrap();
///
/// // 'Hey!' will be unstyled, "Stop" will be red, "and" will be blue, and
/// // "Go" will be green. Without a wrapping `Paint`, "and" would be
/// // unstyled.
/// println!("Hey! {}", wrapping.paint(inner));
/// ```
#[inline]
pub fn wrap(mut self) -> Style {
self.wrap = true;
self
}
style_builder_for!(Style, |style| style.properties,
bold: BOLD, dimmed: DIMMED, italic: ITALIC,
underline: UNDERLINE, blink: BLINK, invert: INVERT,
hidden: HIDDEN, strikethrough: STRIKETHROUGH);
/// Constructs a new `Paint` structure that encapsulates `item` with the
/// style set to `self`.
///
/// ```rust
/// use yansi::{Style, Color};
///
/// let alert = Style::new(Color::Red).bold().underline();
/// println!("Alert: {}", alert.paint("This thing happened!"));
/// ```
#[inline]
pub fn paint<T>(self, item: T) -> Paint<T> {
Paint::new(item).with_style(self)
}
/// Returns the foreground color of `self`.
///
/// ```rust
/// use yansi::{Style, Color};
///
/// let plain = Style::default();
/// assert_eq!(plain.fg_color(), Color::Unset);
///
/// let red = plain.fg(Color::Red);
/// assert_eq!(red.fg_color(), Color::Red);
/// ```
#[inline]
pub fn fg_color(&self) -> Color {
self.foreground
}
/// Returns the foreground color of `self`.
///
/// ```rust
/// use yansi::{Style, Color};
///
/// let plain = Style::default();
/// assert_eq!(plain.bg_color(), Color::Unset);
///
/// let white = plain.bg(Color::White);
/// assert_eq!(white.bg_color(), Color::White);
/// ```
#[inline]
pub fn bg_color(&self) -> Color {
self.background
}
/// Returns `true` if `self` is masked.
///
/// ```rust
/// use yansi::Style;
///
/// let plain = Style::default();
/// assert!(!plain.is_masked());
///
/// let masked = plain.mask();
/// assert!(masked.is_masked());
/// ```
#[inline]
pub fn is_masked(&self) -> bool {
self.masked
}
/// Returns `true` if `self` is wrapping.
///
/// ```rust
/// use yansi::Style;
///
/// let plain = Style::default();
/// assert!(!plain.is_wrapping());
///
/// let wrapping = plain.wrap();
/// assert!(wrapping.is_wrapping());
/// ```
#[inline]
pub fn is_wrapping(&self) -> bool {
self.wrap
}
checker_for!(bold (is_bold): BOLD, dimmed (is_dimmed): DIMMED,
italic (is_italic): ITALIC, underline (is_underline): UNDERLINE,
blink (is_blink): BLINK, invert (is_invert): INVERT,
hidden (is_hidden): HIDDEN,
strikethrough (is_strikethrough): STRIKETHROUGH);
#[inline(always)]
fn is_plain(&self) -> bool {
self == &Style::default()
}
/// Writes the ANSI code prefix for the currently set styles.
///
/// This method is intended to be used inside of [`fmt::Display`] and
/// [`fmt::Debug`] implementations for custom or specialized use-cases. Most
/// users should use [`Paint`] for all painting needs.
///
/// This method writes the ANSI code prefix irrespective of whether painting
/// is currently enabled or disabled. To write the prefix only if painting
/// is enabled, condition a call to this method on [`Paint::is_enabled()`].
///
/// [`fmt::Display`]: fmt::Display
/// [`fmt::Debug`]: fmt::Debug
/// [`Paint`]: Paint
/// [`Paint::is_enabled()`]: Paint::is_enabled()
///
/// # Example
///
/// ```rust
/// use std::fmt;
/// use yansi::Style;
///
/// struct CustomItem {
/// item: u32,
/// style: Style
/// }
///
/// impl fmt::Display for CustomItem {
/// fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
/// self.style.fmt_prefix(f)?;
/// write!(f, "number: {}", self.item)?;
/// self.style.fmt_suffix(f)
/// }
/// }
/// ```
pub fn fmt_prefix(&self, f: &mut fmt::Write) -> fmt::Result {
// A user may just want a code-free string when no styles are applied.
if self.is_plain() {
return Ok(());
}
let mut splice = false;
write!(f, "\x1B[")?;
for i in self.properties.iter() {
let k = if i >= 5 { i + 2 } else { i + 1 };
write_spliced(&mut splice, f, k)?;
}
if self.background != Color::Unset {
write_spliced(&mut splice, f, "4")?;
self.background.ascii_fmt(f)?;
}
if self.foreground != Color::Unset {
write_spliced(&mut splice, f, "3")?;
self.foreground.ascii_fmt(f)?;
}
// All the codes end with an `m`.
write!(f, "m")
}
/// Writes the ANSI code suffix for the currently set styles.
///
/// This method is intended to be used inside of [`fmt::Display`] and
/// [`fmt::Debug`] implementations for custom or specialized use-cases. Most
/// users should use [`Paint`] for all painting needs.
///
/// This method writes the ANSI code suffix irrespective of whether painting
/// is currently enabled or disabled. To write the suffix only if painting
/// is enabled, condition a call to this method on [`Paint::is_enabled()`].
///
/// [`fmt::Display`]: fmt::Display
/// [`fmt::Debug`]: fmt::Debug
/// [`Paint`]: Paint
/// [`Paint::is_enabled()`]: Paint::is_enabled()
///
/// # Example
///
/// ```rust
/// use std::fmt;
/// use yansi::Style;
///
/// struct CustomItem {
/// item: u32,
/// style: Style
/// }
///
/// impl fmt::Display for CustomItem {
/// fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
/// self.style.fmt_prefix(f)?;
/// write!(f, "number: {}", self.item)?;
/// self.style.fmt_suffix(f)
/// }
/// }
/// ```
pub fn fmt_suffix(&self, f: &mut fmt::Write) -> fmt::Result {
if self.is_plain() {
return Ok(());
}
write!(f, "\x1B[0m")
}
}

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extern crate serial_test;
use self::serial_test::serial;
use super::Color::*;
use super::{Paint, Style};
macro_rules! assert_renders {
($($input:expr => $expected:expr,)*) => {
$(
let (input, expected) = ($input.to_string(), $expected.to_string());
if input != expected {
panic!("expected {:?}, got {:?} from {:?} ({:?})",
expected, input, $input.inner(), $input.style())
}
)*
};
}
macro_rules! assert_disabled_renders {
($($input:expr => $expected:expr,)*) => {
$(
Paint::disable();
let (actual, expected) = ($input.to_string(), $expected.to_string());
Paint::enable();
assert_eq!(actual, expected);
)*
};
}
#[test]
#[serial]
fn colors_enabled() {
assert_renders! {
Paint::new("text/plain") => "text/plain",
Paint::red("hi") => "\x1B[31mhi\x1B[0m",
Paint::black("hi") => "\x1B[30mhi\x1B[0m",
Paint::yellow("hi").bold() => "\x1B[1;33mhi\x1B[0m",
Paint::new("hi").fg(Yellow).bold() => "\x1B[1;33mhi\x1B[0m",
Paint::blue("hi").underline() => "\x1B[4;34mhi\x1B[0m",
Paint::green("hi").bold().underline() => "\x1B[1;4;32mhi\x1B[0m",
Paint::green("hi").underline().bold() => "\x1B[1;4;32mhi\x1B[0m",
Paint::magenta("hi").bg(White) => "\x1B[47;35mhi\x1B[0m",
Paint::red("hi").bg(Blue).fg(Yellow) => "\x1B[44;33mhi\x1B[0m",
Paint::cyan("hi").bg(Blue).fg(Yellow) => "\x1B[44;33mhi\x1B[0m",
Paint::cyan("hi").bold().bg(White) => "\x1B[1;47;36mhi\x1B[0m",
Paint::cyan("hi").underline().bg(White) => "\x1B[4;47;36mhi\x1B[0m",
Paint::cyan("hi").bold().underline().bg(White) => "\x1B[1;4;47;36mhi\x1B[0m",
Paint::cyan("hi").underline().bold().bg(White) => "\x1B[1;4;47;36mhi\x1B[0m",
Paint::fixed(100, "hi") => "\x1B[38;5;100mhi\x1B[0m",
Paint::fixed(100, "hi").bg(Magenta) => "\x1B[45;38;5;100mhi\x1B[0m",
Paint::fixed(100, "hi").bg(Fixed(200)) => "\x1B[48;5;200;38;5;100mhi\x1B[0m",
Paint::rgb(70, 130, 180, "hi") => "\x1B[38;2;70;130;180mhi\x1B[0m",
Paint::rgb(70, 130, 180, "hi").bg(Blue) => "\x1B[44;38;2;70;130;180mhi\x1B[0m",
Paint::blue("hi").bg(RGB(70, 130, 180)) => "\x1B[48;2;70;130;180;34mhi\x1B[0m",
Paint::rgb(70, 130, 180, "hi").bg(RGB(5,10,15)) => "\x1B[48;2;5;10;15;38;2;70;130;180mhi\x1B[0m",
Paint::new("hi").bold() => "\x1B[1mhi\x1B[0m",
Paint::new("hi").underline() => "\x1B[4mhi\x1B[0m",
Paint::new("hi").bold().underline() => "\x1B[1;4mhi\x1B[0m",
Paint::new("hi").dimmed() => "\x1B[2mhi\x1B[0m",
Paint::new("hi").italic() => "\x1B[3mhi\x1B[0m",
Paint::new("hi").blink() => "\x1B[5mhi\x1B[0m",
Paint::new("hi").invert() => "\x1B[7mhi\x1B[0m",
Paint::new("hi").hidden() => "\x1B[8mhi\x1B[0m",
Paint::new("hi").strikethrough() => "\x1B[9mhi\x1B[0m",
}
}
#[test]
#[serial]
fn colors_disabled() {
assert_disabled_renders! {
Paint::new("text/plain") => "text/plain",
Paint::red("hi") => "hi",
Paint::black("hi") => "hi",
Paint::yellow("hi").bold() => "hi",
Paint::new("hi").fg(Yellow).bold() => "hi",
Paint::blue("hi").underline() => "hi",
Paint::green("hi").bold().underline() => "hi",
Paint::green("hi").underline().bold() => "hi",
Paint::magenta("hi").bg(White) => "hi",
Paint::red("hi").bg(Blue).fg(Yellow) => "hi",
Paint::cyan("hi").bg(Blue).fg(Yellow) => "hi",
Paint::cyan("hi").bold().bg(White) => "hi",
Paint::cyan("hi").underline().bg(White) => "hi",
Paint::cyan("hi").bold().underline().bg(White) => "hi",
Paint::cyan("hi").underline().bold().bg(White) => "hi",
Paint::fixed(100, "hi") => "hi",
Paint::fixed(100, "hi").bg(Magenta) => "hi",
Paint::fixed(100, "hi").bg(Fixed(200)) => "hi",
Paint::rgb(70, 130, 180, "hi") => "hi",
Paint::rgb(70, 130, 180, "hi").bg(Blue) => "hi",
Paint::blue("hi").bg(RGB(70, 130, 180)) => "hi",
Paint::blue("hi").bg(RGB(70, 130, 180)).wrap() => "hi",
Paint::rgb(70, 130, 180, "hi").bg(RGB(5,10,15)) => "hi",
Paint::new("hi").bold() => "hi",
Paint::new("hi").underline() => "hi",
Paint::new("hi").bold().underline() => "hi",
Paint::new("hi").dimmed() => "hi",
Paint::new("hi").italic() => "hi",
Paint::new("hi").blink() => "hi",
Paint::new("hi").invert() => "hi",
Paint::new("hi").hidden() => "hi",
Paint::new("hi").strikethrough() => "hi",
Paint::new("hi").strikethrough().wrap() => "hi",
}
}
#[test]
#[serial]
fn masked_when_disabled() {
assert_disabled_renders! {
Paint::masked("text/plain") => "",
Paint::masked("text/plain").mask() => "",
Paint::new("text/plain").mask() => "",
Paint::new("text/plain").mask() => "",
Paint::red("hi").mask() => "",
Paint::black("hi").mask() => "",
Paint::yellow("hi").bold().mask() => "",
Paint::cyan("hi").bg(Blue).fg(Yellow).mask() => "",
Paint::cyan("hi").underline().bold().bg(White).mask() => "",
}
}
#[test]
#[serial]
fn masked_when_enabled() {
assert_renders! {
Paint::masked("text/plain") => "text/plain",
Paint::masked("text/plain").mask() => "text/plain",
Paint::black("hi").mask() => "\x1B[30mhi\x1B[0m",
Paint::yellow("hi").bold().mask() => "\x1B[1;33mhi\x1B[0m",
Paint::new("hi").fg(Yellow).bold().mask() => "\x1B[1;33mhi\x1B[0m",
Paint::cyan("hi").underline().bg(White).mask() => "\x1B[4;47;36mhi\x1B[0m",
Paint::cyan("hi").bold().underline().bg(White).mask() => "\x1B[1;4;47;36mhi\x1B[0m",
Paint::rgb(70, 130, 180, "hi").mask() => "\x1B[38;2;70;130;180mhi\x1B[0m",
Paint::new("hi").underline().mask() => "\x1B[4mhi\x1B[0m",
Paint::new("hi").bold().underline().mask() => "\x1B[1;4mhi\x1B[0m",
Paint::new("hi").hidden().mask() => "\x1B[8mhi\x1B[0m",
}
}
#[test]
#[serial]
fn wrapping() {
let inner = || format!("{} b {}", Paint::red("a"), Paint::green("c"));
let inner2 = || format!("0 {} 1", Paint::magenta(&inner()).wrap());
assert_renders! {
Paint::new("text/plain").wrap() => "text/plain",
Paint::new(&inner()).wrap() => &inner(),
Paint::new(&inner()).wrap() =>
"\u{1b}[31ma\u{1b}[0m b \u{1b}[32mc\u{1b}[0m",
Paint::new(&inner()).fg(Blue).wrap() =>
"\u{1b}[34m\u{1b}[31ma\u{1b}[0m\u{1b}[34m b \
\u{1b}[32mc\u{1b}[0m\u{1b}[34m\u{1b}[0m",
Paint::new(&inner2()).wrap() => &inner2(),
Paint::new(&inner2()).wrap() =>
"0 \u{1b}[35m\u{1b}[31ma\u{1b}[0m\u{1b}[35m b \
\u{1b}[32mc\u{1b}[0m\u{1b}[35m\u{1b}[0m 1",
Paint::new(&inner2()).fg(Blue).wrap() =>
"\u{1b}[34m0 \u{1b}[35m\u{1b}[31ma\u{1b}[0m\u{1b}[34m\u{1b}[35m b \
\u{1b}[32mc\u{1b}[0m\u{1b}[34m\u{1b}[35m\u{1b}[0m\u{1b}[34m 1\u{1b}[0m",
}
}
#[test]
fn hash_eq() {
use std::collections::hash_map::DefaultHasher;
use std::hash::{Hash, Hasher};
fn hash<T: Hash>(t: &T) -> u64 {
let mut s = DefaultHasher::new();
t.hash(&mut s);
s.finish()
}
let a = Style::default();
let b = Style::default().mask();
assert_eq!(a, b);
assert_eq!(hash(&a), hash(&b));
}

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#[cfg(windows)]
mod windows_console {
use std::os::raw::c_void;
#[allow(non_camel_case_types)] type c_ulong = u32;
#[allow(non_camel_case_types)] type c_int = i32;
type DWORD = c_ulong;
type LPDWORD = *mut DWORD;
type HANDLE = *mut c_void;
type BOOL = c_int;
const ENABLE_VIRTUAL_TERMINAL_PROCESSING: DWORD = 0x0004;
const STD_OUTPUT_HANDLE: DWORD = 0xFFFFFFF5;
const STD_ERROR_HANDLE: DWORD = 0xFFFFFFF4;
const INVALID_HANDLE_VALUE: HANDLE = -1isize as HANDLE;
const FALSE: BOOL = 0;
const TRUE: BOOL = 1;
// This is the win32 console API, taken from the 'winapi' crate.
extern "system" {
fn GetStdHandle(nStdHandle: DWORD) -> HANDLE;
fn GetConsoleMode(hConsoleHandle: HANDLE, lpMode: LPDWORD) -> BOOL;
fn SetConsoleMode(hConsoleHandle: HANDLE, dwMode: DWORD) -> BOOL;
}
unsafe fn get_handle(handle_num: DWORD) -> Result<HANDLE, ()> {
match GetStdHandle(handle_num) {
handle if handle == INVALID_HANDLE_VALUE => Err(()),
handle => Ok(handle)
}
}
unsafe fn enable_vt(handle: HANDLE) -> Result<(), ()> {
let mut dw_mode: DWORD = 0;
if GetConsoleMode(handle, &mut dw_mode) == FALSE {
return Err(());
}
dw_mode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
match SetConsoleMode(handle, dw_mode) {
result if result == TRUE => Ok(()),
_ => Err(())
}
}
unsafe fn enable_ascii_colors_raw() -> Result<bool, ()> {
let stdout_handle = get_handle(STD_OUTPUT_HANDLE)?;
let stderr_handle = get_handle(STD_ERROR_HANDLE)?;
enable_vt(stdout_handle)?;
if stdout_handle != stderr_handle {
enable_vt(stderr_handle)?;
}
Ok(true)
}
#[inline]
pub fn enable_ascii_colors() -> bool {
unsafe { enable_ascii_colors_raw().unwrap_or(false) }
}
}
#[cfg(not(windows))]
mod windows_console {
pub fn enable_ascii_colors() -> bool { true }
}
pub use self::windows_console::enable_ascii_colors;