Function createBmpRange

tools/scripts/utils.js:79–127

(r, {addBrackets} = {addBrackets: true})

};

const createBmpRange = (r, {addBrackets} = {addBrackets: true}) => {
    if (r.length === 0) {return '';}

    const buf = [];
    let [start] = r;
    let [end] = r;
    let predict = start + 1;
    r = r.slice(1);

    let counter = 0;
    for (const code of r) {
        if (predict == code) {
            end = code;
            predict = code + 1;
            continue;
        } else {
            if (start == end) {
                buf.push(codePointToString(start));
                counter++;
            } else if (end == start + 1) {
                buf.push(`${codePointToString(start)}${codePointToString(end)}`);
                counter += 2;
            } else {
                buf.push(`${codePointToString(start)}-${codePointToString(end)}`);
                counter += 2;
            }
            start = code;
            end = code;
            predict = code + 1;
        }
    }

    if (start == end) {
        buf.push(codePointToString(start));
        counter++;
    } else if (end == start + 1) {
        buf.push(`${codePointToString(start)}${codePointToString(end)}`);
        counter += 2;
    } else {
        buf.push(`${codePointToString(start)}-${codePointToString(end)}`);
        counter += 2;
    }

    const output = buf.join('');
    if (!addBrackets || counter == 1) {
        return output;
    }
    return `[${output}]`;
};

const assemble = ({name, alias, codePoints}) => {
    const {bmp, astral, isBmpLast} = createRange(codePoints);