function adjustHeaders()

in scripts/merge_md.js [222:261]

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

function adjustHeaders(mdContent, level) {
    const match = mdContent.match(/{[^}]*}/);
    const specialTitle = `{ "title": "What's Apache Doris", "language": "en" }`;
    const mainTitle = JSON.parse(match[0] === specialTitle ? match[0] : match[0].replace(/'/g, '"')).title;
    const lines = mdContent.split('\n');

    let hasMainTitle = false;
    let firstSeparatorIndex = -1;
    let secondSeparatorIndex = -1;
    for (let i = 0; i < lines.length; i++) {
        const line = lines[i];
        if (line.startsWith('# ')) {
            hasMainTitle = true;
            break;
        }
        if (line.trim() === '---') {
            if (firstSeparatorIndex === -1) {
                firstSeparatorIndex = i;
            } else {
                secondSeparatorIndex = i;
                break;
            }
        }
    }

    const adjustedLines = lines.map(line => {
        if (line.startsWith('#')) {
            const numHashes = line.match(/^#+/)[0].length;

            return '#'.repeat(numHashes + level) + line.slice(numHashes);
        }
        return line;
    });

    if (!hasMainTitle && secondSeparatorIndex !== -1) {
        adjustedLines.splice(secondSeparatorIndex + 2, 0, `${'#'.repeat(level + 1)} ${mainTitle}`);
    }

    return adjustedLines.join('\n');
}