Import libterm from rust-lang/rust

Author: gnzlbg

src/libterm/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+authors = ["The Rust Project Developers"]
+name = "term"
+version = "0.0.0"
+edition = "2018"
+
+[lib]
+name = "term"
+path = "lib.rs"
+crate-type = ["dylib", "rlib"]

src/libterm/lib.rs

@@ -0,0 +1,201 @@
+//! Terminal formatting library.
+//!
+//! This crate provides the `Terminal` trait, which abstracts over an [ANSI
+//! Terminal][ansi] to provide color printing, among other things. There are two
+//! implementations, the `TerminfoTerminal`, which uses control characters from
+//! a [terminfo][ti] database, and `WinConsole`, which uses the [Win32 Console
+//! API][win].
+//!
+//! # Examples
+//!
+//! ```no_run
+//! # #![feature(rustc_private)]
+//! extern crate term;
+//! use std::io::prelude::*;
+//!
+//! fn main() {
+//!     let mut t = term::stdout().unwrap();
+//!
+//!     t.fg(term::color::GREEN).unwrap();
+//!     write!(t, "hello, ").unwrap();
+//!
+//!     t.fg(term::color::RED).unwrap();
+//!     writeln!(t, "world!").unwrap();
+//!
+//!     assert!(t.reset().unwrap());
+//! }
+//! ```
+//!
+//! [ansi]: https://en.wikipedia.org/wiki/ANSI_escape_code
+//! [win]: http://msdn.microsoft.com/en-us/library/windows/desktop/ms682010%28v=vs.85%29.aspx
+//! [ti]: https://en.wikipedia.org/wiki/Terminfo
+
+#![doc(html_root_url = "https://doc.rust-lang.org/nightly/",
+       html_playground_url = "https://play.rust-lang.org/",
+       test(attr(deny(warnings))))]
+#![deny(missing_docs)]
+
+#![deny(rust_2018_idioms)]
+
+#![cfg_attr(windows, feature(libc))]
+// Handle rustfmt skips
+#![feature(custom_attribute)]
+#![allow(unused_attributes)]
+
+use std::io::prelude::*;
+use std::io::{self, Stdout, Stderr};
+
+pub use terminfo::TerminfoTerminal;
+#[cfg(windows)]
+pub use win::WinConsole;
+
+pub mod terminfo;
+
+#[cfg(windows)]
+mod win;
+
+/// Alias for stdout terminals.
+pub type StdoutTerminal = dyn Terminal<Output = Stdout> + Send;
+/// Alias for stderr terminals.
+pub type StderrTerminal = dyn Terminal<Output = Stderr> + Send;
+
+#[cfg(not(windows))]
+/// Returns a Terminal wrapping stdout, or None if a terminal couldn't be
+/// opened.
+pub fn stdout() -> Option<Box<StdoutTerminal>> {
+    TerminfoTerminal::new(io::stdout()).map(|t| Box::new(t) as Box<StdoutTerminal>)
+}
+
+#[cfg(windows)]
+/// Returns a Terminal wrapping stdout, or None if a terminal couldn't be
+/// opened.
+pub fn stdout() -> Option<Box<StdoutTerminal>> {
+    TerminfoTerminal::new(io::stdout())
+        .map(|t| Box::new(t) as Box<StdoutTerminal>)
+        .or_else(|| WinConsole::new(io::stdout()).ok().map(|t| Box::new(t) as Box<StdoutTerminal>))
+}
+
+#[cfg(not(windows))]
+/// Returns a Terminal wrapping stderr, or None if a terminal couldn't be
+/// opened.
+pub fn stderr() -> Option<Box<StderrTerminal>> {
+    TerminfoTerminal::new(io::stderr()).map(|t| Box::new(t) as Box<StderrTerminal>)
+}
+
+#[cfg(windows)]
+/// Returns a Terminal wrapping stderr, or None if a terminal couldn't be
+/// opened.
+pub fn stderr() -> Option<Box<StderrTerminal>> {
+    TerminfoTerminal::new(io::stderr())
+        .map(|t| Box::new(t) as Box<StderrTerminal>)
+        .or_else(|| WinConsole::new(io::stderr()).ok().map(|t| Box::new(t) as Box<StderrTerminal>))
+}
+
+
+/// Terminal color definitions
+#[allow(missing_docs)]
+pub mod color {
+    /// Number for a terminal color
+    pub type Color = u16;
+
+    pub const BLACK: Color = 0;
+    pub const RED: Color = 1;
+    pub const GREEN: Color = 2;
+    pub const YELLOW: Color = 3;
+    pub const BLUE: Color = 4;
+    pub const MAGENTA: Color = 5;
+    pub const CYAN: Color = 6;
+    pub const WHITE: Color = 7;
+
+    pub const BRIGHT_BLACK: Color = 8;
+    pub const BRIGHT_RED: Color = 9;
+    pub const BRIGHT_GREEN: Color = 10;
+    pub const BRIGHT_YELLOW: Color = 11;
+    pub const BRIGHT_BLUE: Color = 12;
+    pub const BRIGHT_MAGENTA: Color = 13;
+    pub const BRIGHT_CYAN: Color = 14;
+    pub const BRIGHT_WHITE: Color = 15;
+}
+
+/// Terminal attributes for use with term.attr().
+///
+/// Most attributes can only be turned on and must be turned off with term.reset().
+/// The ones that can be turned off explicitly take a boolean value.
+/// Color is also represented as an attribute for convenience.
+#[derive(Debug, PartialEq, Eq, Copy, Clone)]
+pub enum Attr {
+    /// Bold (or possibly bright) mode
+    Bold,
+    /// Dim mode, also called faint or half-bright. Often not supported
+    Dim,
+    /// Italics mode. Often not supported
+    Italic(bool),
+    /// Underline mode
+    Underline(bool),
+    /// Blink mode
+    Blink,
+    /// Standout mode. Often implemented as Reverse, sometimes coupled with Bold
+    Standout(bool),
+    /// Reverse mode, inverts the foreground and background colors
+    Reverse,
+    /// Secure mode, also called invis mode. Hides the printed text
+    Secure,
+    /// Convenience attribute to set the foreground color
+    ForegroundColor(color::Color),
+    /// Convenience attribute to set the background color
+    BackgroundColor(color::Color),
+}
+
+/// A terminal with similar capabilities to an ANSI Terminal
+/// (foreground/background colors etc).
+pub trait Terminal: Write {
+    /// The terminal's output writer type.
+    type Output: Write;
+
+    /// Sets the foreground color to the given color.
+    ///
+    /// If the color is a bright color, but the terminal only supports 8 colors,
+    /// the corresponding normal color will be used instead.
+    ///
+    /// Returns `Ok(true)` if the color was set, `Ok(false)` otherwise, and `Err(e)`
+    /// if there was an I/O error.
+    fn fg(&mut self, color: color::Color) -> io::Result<bool>;
+
+    /// Sets the background color to the given color.
+    ///
+    /// If the color is a bright color, but the terminal only supports 8 colors,
+    /// the corresponding normal color will be used instead.
+    ///
+    /// Returns `Ok(true)` if the color was set, `Ok(false)` otherwise, and `Err(e)`
+    /// if there was an I/O error.
+    fn bg(&mut self, color: color::Color) -> io::Result<bool>;
+
+    /// Sets the given terminal attribute, if supported. Returns `Ok(true)`
+    /// if the attribute was supported, `Ok(false)` otherwise, and `Err(e)` if
+    /// there was an I/O error.
+    fn attr(&mut self, attr: Attr) -> io::Result<bool>;
+
+    /// Returns `true` if the given terminal attribute is supported.
+    fn supports_attr(&self, attr: Attr) -> bool;
+
+    /// Resets all terminal attributes and colors to their defaults.
+    ///
+    /// Returns `Ok(true)` if the terminal was reset, `Ok(false)` otherwise, and `Err(e)` if there
+    /// was an I/O error.
+    ///
+    /// *Note: This does not flush.*
+    ///
+    /// That means the reset command may get buffered so, if you aren't planning on doing anything
+    /// else that might flush stdout's buffer (e.g., writing a line of text), you should flush after
+    /// calling reset.
+    fn reset(&mut self) -> io::Result<bool>;
+
+    /// Gets an immutable reference to the stream inside
+    fn get_ref(&self) -> &Self::Output;
+
+    /// Gets a mutable reference to the stream inside
+    fn get_mut(&mut self) -> &mut Self::Output;
+
+    /// Returns the contained stream, destroying the `Terminal`
+    fn into_inner(self) -> Self::Output where Self: Sized;
+}