Function emojis::get_by_shortcode

source · 
pub fn get_by_shortcode(s: &str) -> Option<&'static Emoji>
Expand description

Lookup an emoji by GitHub shortcode.

This take Ο(1) time.

§Examples

let rocket = emojis::get_by_shortcode("rocket").unwrap();
assert_eq!(rocket, "🚀");
Examples found in repository?
examples/replace.rs (line 37)
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fn replace(mut s: &str, mut o: impl Write) -> io::Result<()> {
    // The meaning of the index values is as follows.
    //
    //  : r o c k e t :
    // ^ ^           ^ ^
    // i m           n j
    //
    // i..j gives ":rocket:"
    // m..n gives "rocket"
    while let Some((i, m, n, j)) = s
        .find(':')
        .map(|i| (i, i + 1))
        .and_then(|(i, m)| s[m..].find(':').map(|x| (i, m, m + x, m + x + 1)))
    {
        match emojis::get_by_shortcode(&s[m..n]) {
            Some(emoji) => {
                // Output everything preceding, except the first colon.
                o.write_all(s[..i].as_bytes())?;
                // Output the emoji.
                o.write_all(emoji.as_bytes())?;
                // Update the string to past the last colon.
                s = &s[j..];
            }
            None => {
                // Output everything preceding but not including the colon.
                o.write_all(s[..n].as_bytes())?;
                // Update the string to start with the last colon.
                s = &s[n..];
            }
        }
    }
    o.write_all(s.as_bytes())
}