Function visible_width

rust/crates/ccusage-terminal/src/width.rs:3–26

(value: &str)

use unicode_width::UnicodeWidthChar;

pub(crate) fn visible_width(value: &str) -> usize {
    let bytes = value.as_bytes();
    let mut width = 0;
    let mut index = 0;
    while index < bytes.len() {
        if bytes[index] == 0x1b {
            index += 1;
            if index < bytes.len() && bytes[index] == b'[' {
                index += 1;
                while index < bytes.len() && !(bytes[index] as char).is_ascii_alphabetic() {
                    index += 1;
                }
                index += usize::from(index < bytes.len());
            }
            continue;
        }
        let Some(ch) = value[index..].chars().next() else {
            break;
        };
        width += char_display_width(ch);
        index += ch.len_utf8();
    }
    width
}

pub(crate) fn contains_ansi(value: &str) -> bool {
    value.as_bytes().contains(&0x1b)