Method makeSections

src/cmap/commands.ts:588–601

* Add the sections to the OP_MSG request's buffers and returns the length.

(buffers: Uint8Array[], document: Document)

   * Add the sections to the OP_MSG request's buffers and returns the length.
   */
  makeSections(buffers: Uint8Array[], document: Document): number {
    const sequencesBuffer = this.extractDocumentSequences(document);
    const payloadTypeBuffer = ByteUtils.allocateUnsafe(1);
    payloadTypeBuffer[0] = 0;

    const documentBuffer = this.serializeBson(document);
    // First section, type 0
    buffers.push(payloadTypeBuffer);
    buffers.push(documentBuffer);
    // Subsequent sections, type 1
    buffers.push(sequencesBuffer);

    return payloadTypeBuffer.length + documentBuffer.length + sequencesBuffer.length;
  }

  /**
   * Extracts the document sequences from the command document and returns