Function extractImages

src/session/images.js:19–52

* Detect image file references in a message. * Returns array of { path, base64, mimeType }

(message, cwd)

 * Returns array of { path, base64, mimeType }
 */
function extractImages(message, cwd) {
  const images = [];
  
  // Match @path references that end in image extensions
  const FILE_REGEX = /(?<![\w`])@(\.?[^\s`,.]*(?:\.[^\s`,.]+)*)/g;
  const matches = [...message.matchAll(FILE_REGEX)];
  
  for (const match of matches) {
    const rawPath = match[1];
    if (!rawPath) continue;
    
    const ext = path.extname(rawPath).toLowerCase();
    if (!IMAGE_EXTENSIONS.includes(ext)) continue;
    
    const safe = safeResolvePath(rawPath, cwd);
    if (!safe.ok) continue; // Block out-of-tree images and sensitive paths
    const fullPath = safe.fullPath;
    if (!fs.existsSync(fullPath)) continue;

    let stat;
    try { stat = fs.statSync(fullPath); } catch { continue; }
    if (!stat.isFile() || stat.size === 0) continue;
    if (stat.size > MAX_IMAGE_BYTES) continue; // Refuse oversized images

    try {
      const buffer = fs.readFileSync(fullPath);
      const base64 = buffer.toString('base64');
      const mimeType = getMimeType(ext);
      images.push({ path: rawPath, base64, mimeType, size: buffer.length });
    } catch {}
  }
  
  return images;
}

/**
 * Format images as OpenAI vision API content parts.