Function extractFirstCodeBlock

apps/aiagent/fh.ai-inline.js:365–383

(text, preferredLanguage)

}

function extractFirstCodeBlock(text, preferredLanguage) {
    const source = String(text || '');
    const blocks = [];
    const reg = /```([a-zA-Z0-9_-]*)\s*\n([\s\S]*?)```/g;
    let match;
    while ((match = reg.exec(source))) {
        blocks.push({
            lang: (match[1] || '').toLowerCase(),
            code: (match[2] || '').trim()
        });
    }
    if (!blocks.length) return '';
    if (preferredLanguage) {
        const target = preferredLanguage.toLowerCase();
        const found = blocks.find(block => block.lang === target);
        if (found) return found.code;
    }
    return blocks[0].code;
}

function extractJsonCandidate(text) {
    const code = extractFirstCodeBlock(text, 'json') || extractFirstCodeBlock(text);