Function parseMultipart

server.js:390–420

(buffer, contentType)

}

function parseMultipart(buffer, contentType) {
  const match = /boundary=(?:"([^"]+)"|([^;]+))/i.exec(contentType || "");
  if (!match) throw new Error("Missing multipart boundary");
  const boundary = Buffer.from(`--${match[1] || match[2]}`);
  const parts = [];
  let offset = 0;

  while (true) {
    const start = buffer.indexOf(boundary, offset);
    if (start === -1) break;
    let partStart = start + boundary.length;
    if (buffer.slice(partStart, partStart + 2).toString() === "--") break;
    if (buffer.slice(partStart, partStart + 2).toString() === "\r\n") partStart += 2;
    const headerEnd = buffer.indexOf(Buffer.from("\r\n\r\n"), partStart);
    if (headerEnd === -1) break;
    const headers = buffer.slice(partStart, headerEnd).toString("utf8");
    let dataStart = headerEnd + 4;
    let next = buffer.indexOf(boundary, dataStart);
    if (next === -1) break;
    let dataEnd = next - 2;
    if (dataEnd < dataStart) dataEnd = next;

    const disposition = /content-disposition:[^\r\n]+/i.exec(headers)?.[0] || "";
    const name = /name="([^"]+)"/i.exec(disposition)?.[1];
    const filename = /filename="([^"]*)"/i.exec(disposition)?.[1];
    parts.push({ name, filename, data: buffer.slice(dataStart, dataEnd) });
    offset = next;
  }

  return parts;
}

async function saveMultipartVideos(req) {
  const body = await readBody(req);