Function findChildKey

docs/assets/script.js:4716–4729

* 查找子级 key 行

(lines, start, end, parentIndent, key)

 * 查找子级 key 行
 */
function findChildKey(lines, start, end, parentIndent, key) {
    for (let i = start + 1; i < end; i++) {
        const line = lines[i];
        if (line.trim() === '' || line.trim().startsWith('#')) continue;
        const indent = line.search(/\S/);
        if (indent <= parentIndent) break;
        const m = line.match(/^\s*(\S+):\s*/);
        const rawKey = m ? m[1].replace(/^["']|["']$/g, '') : null;
        if (m && rawKey === key && indent === parentIndent + 2) {
            return i;
        }
    }
    return -1;
}

/**
 * 找一个 block 的结束行号（下一个同级或更低缩进的非空非注释行）