meli/meli/src/terminal.rs

162 lines
4.4 KiB
Rust

/*
* meli
*
* Copyright 2017-2018 Manos Pitsidianakis
*
* This file is part of meli.
*
* meli is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* meli is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with meli. If not, see <http://www.gnu.org/licenses/>.
*/
//! Terminal grid cells, keys, colors, etc.
use serde::{de, de::Visitor, Deserialize, Deserializer};
mod braille;
mod color;
mod screen;
pub use color::*;
#[macro_use]
pub mod position;
#[macro_use]
pub mod cells;
#[macro_use]
pub mod keys;
pub mod embed;
pub mod text_editing;
use std::io::{BufRead, Write};
pub use braille::BraillePixelIter;
pub use screen::{Area, Screen, ScreenGeneration, StateStdout, Tty, Virtual};
pub use self::{cells::*, keys::*, position::*, text_editing::*};
/*
* CSI events we use
*/
pub const BRACKET_PASTE_START: &[u8] = b"\x1B[200~";
pub const BRACKET_PASTE_END: &[u8] = b"\x1B[201~";
// Some macros taken from termion:
/// Create a CSI-introduced sequence.
macro_rules! csi {
($( $l:expr ),*) => { concat!("\x1b[", $( $l ),*) };
}
/// Derive a CSI sequence struct.
macro_rules! derive_csi_sequence {
($(#[$outer:meta])*
($name:ident, $value:expr)) => {
$(#[$outer])*
#[derive(Copy, Clone)]
pub struct $name;
impl std::fmt::Display for $name {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
write!(f, csi!($value))
}
}
impl AsRef<[u8]> for $name {
fn as_ref(&self) -> &'static [u8] {
csi!($value).as_bytes()
}
}
impl AsRef<str> for $name {
fn as_ref(&self) -> &'static str {
csi!($value)
}
}
};
}
derive_csi_sequence!(
///Ps = 1 0 0 2 ⇒ Don't use Cell Motion Mouse Tracking, xterm
(DisableMouse, "?1002l")
);
derive_csi_sequence!(
///Ps = 1 0 0 2 ⇒ Use Cell Motion Mouse Tracking, xterm
(EnableMouse, "?1002h")
);
derive_csi_sequence!(
///Ps = 1 0 0 6 Enable SGR Mouse Mode, xterm.
(EnableSGRMouse, "?1006h")
);
derive_csi_sequence!(
///Ps = 1 0 0 6 Disable SGR Mouse Mode, xterm.
(DisableSGRMouse, "?1006l")
);
derive_csi_sequence!(
#[doc = "`CSI Ps ; Ps ; Ps t`, where `Ps = 2 2 ; 0` -> Save xterm icon and window title on \
stack."]
(SaveWindowTitleIconToStack, "22;0t")
);
derive_csi_sequence!(
#[doc = "Restore window title and icon from terminal's title stack. `CSI Ps ; Ps ; Ps t`, \
where `Ps = 2 3 ; 0` -> Restore xterm icon and window title from stack."]
(RestoreWindowTitleIconFromStack, "23;0t")
);
derive_csi_sequence!(
#[doc = "Empty struct with a Display implementation that returns the byte sequence to start [Bracketed Paste Mode](http://www.xfree86.org/current/ctlseqs.html#Bracketed%20Paste%20Mode)"]
(BracketModeStart, "?2004h")
);
derive_csi_sequence!(
#[doc = "Empty struct with a Display implementation that returns the byte sequence to end [Bracketed Paste Mode](http://www.xfree86.org/current/ctlseqs.html#Bracketed%20Paste%20Mode)"]
(BracketModeEnd, "?2004l")
);
pub struct Ask {
pub message: String,
}
impl Ask {
pub fn run(self) -> bool {
let mut buffer = String::new();
let stdin = std::io::stdin();
let mut handle = stdin.lock();
print!("{} [Y/n] ", &self.message);
let _ = std::io::stdout().flush();
loop {
buffer.clear();
handle
.read_line(&mut buffer)
.expect("Could not read from stdin.");
match buffer.trim() {
"" | "Y" | "y" | "yes" | "YES" | "Yes" => {
return true;
}
"n" | "N" | "no" | "No" | "NO" => {
return false;
}
_ => {
print!("\n{} [Y/n] ", &self.message);
let _ = std::io::stdout().flush();
}
}
}
}
}