omabeam 0.1.0

Beam text, links, or one file to a phone with a QR code
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

//! Prints high-contrast terminal QR codes with the required quiet zone.

use qrcode::QrCode;
use qrcode::render::unicode::Dense1x2;

const COLORS: &str = "\x1b[38;2;0;0;0;48;2;255;255;255m";

pub(super) fn print(text: &str) -> Result<(), String> {
    if text.is_empty() {
        return Err(
            "there is no text to share; pipe text into omabeam or copy some text first".into(),
        );
    }

    let code = QrCode::new(text.as_bytes()).map_err(|_| {
        "text is too long for a QR code; shorten it or share a file instead".to_owned()
    })?;
    let image = code
        .render::<Dense1x2>()
        .quiet_zone(true)
        .module_dimensions(1, 1)
        .build();

    println!("{COLORS}{image}\x1b[0m");
    Ok(())
}