fn get_emacs_mode()

in src/tools.rs [158:183]

• 23 lines of code
• 9 McCabe index (conditional complexity)

fn get_emacs_mode(buf: &[u8]) -> Option<String> {
    // we just try to use the emacs info (if there)
    for (i, line) in buf.splitn(5, |c| *c == b'\n').enumerate() {
        if let Some(cap) = get_regex(&RE1_EMACS, line, FIRST_EMACS_EXPRESSION) {
            return mode_to_str(&cap[1]);
        } else if let Some(cap) = get_regex(&RE2_EMACS, line, SECOND_EMACS_EXPRESSION) {
            return mode_to_str(&cap[1]);
        } else if let Some(cap) = get_regex(&RE1_VIM, line, VIM_EXPRESSION) {
            return mode_to_str(&cap[1]);
        }
        if i == 3 {
            break;
        }
    }

    for (i, line) in buf.rsplitn(5, |c| *c == b'\n').enumerate() {
        if let Some(cap) = get_regex(&RE1_VIM, line, VIM_EXPRESSION) {
            return mode_to_str(&cap[1]);
        }
        if i == 3 {
            break;
        }
    }

    None
}