Terminal Information

terminal_info.rs

use std::io::{self, Read, Write};
use std::net::TcpStream;

fn get_remote_terminal_info(stream: &mut TcpStream) -> io::Result<(u16, u16, bool, bool, bool)> {
    // Send the control code to query the size of the terminal
    write!(stream, "\x1b[18t")?;
    stream.flush()?;
    // Read the response from the terminal
    let mut buf = [0u8; 32];
    let n = stream.read(&mut buf)?;
    let response = std::str::from_utf8(&buf[..n]).unwrap_or_default();
    // Extract the size of the terminal from the response
    let (width, height) = response
        .split(';')
        .skip(1)
        .take(2)
        .filter_map(|s| s.parse::<u16>().ok())
        .next()
        .unwrap_or((80, 24));
    // Send the control code to query the color range of the terminal
    write!(stream, "\x1b[0;?q")?;
    stream.flush()?;
    // Read the response from the terminal
    let mut buf = [0u8; 32];
    let n = stream.read(&mut buf)?;
    let response = std::str::from_utf8(&buf[..n]).unwrap_or_default();
    // Check if the terminal supports 256 colors
    let supports_256_colors = response.contains(";5;");
    // Check if the terminal supports 24-bit color
    let supports_24_bit_color = response.contains(";2;");
    // Send the control code to query the UTF-8 support of the terminal
    write!(stream, "\x1b[6n")?;
    stream.flush()?;
    // Read the response from the terminal
    let mut buf = [0u8; 32];
    let n = stream.read(&mut buf)?;
    let response = std::str::from_utf8(&buf[..n]).unwrap_or_default();
    // Check if the terminal supports UTF-8 encoding
    let utf8_support = response.contains("[?1;2C");
    Ok((width, height, supports_256_colors, supports_24_bit_color, utf8_support))
}