Method copyPadWithoutHistory

src/node/db/Pad.ts:731–802

(destinationID: string, force: string|boolean, authorId = '')

  }

  async copyPadWithoutHistory(destinationID: string, force: string|boolean, authorId = '') {
    // flush the source pad
    this.saveToDatabase();

    // if it's a group pad, let's make sure the group exists.
    const destGroupID = await this.checkIfGroupExistAndReturnIt(destinationID);

    // if force is true and already exists a Pad with the same id, remove that Pad
    await this.removePadIfForceIsTrueAndAlreadyExist(destinationID, force);

    await this.copyAuthorInfoToDestinationPad(destinationID);

    // Group pad? Add it to the group's list
    if (destGroupID) {
      await db.setSub(`group:${destGroupID}`, ['pads', destinationID], 1);
    }

    // initialize the pad with a new line to avoid getting the defaultText
    const dstPad = await padManager.getPad(destinationID, '\n', authorId);
    dstPad.pool = this.pool.clone();

    const oldAText = this.atext;

    // The author to attribute inserts to when the historical op lacks
    // one (legacy server-internal flows / .etherpad imports). Caller-
    // supplied authorId wins; otherwise the stable system author.
    // appendRevision now requires every insert to carry an author, so
    // unattributed ops in the source pad would otherwise throw here.
    const replayAuthorId = authorId || Pad.SYSTEM_AUTHOR_ID;

    // based on Changeset.makeSplice
    const assem = new SmartOpAssembler();
    for (const op of opsFromAText(oldAText)) {
      if (op.opcode === '+') {
        const map = AttributeMap.fromString(op.attribs, dstPad.pool);
        if (!map.get('author')) {
          map.set('author', replayAuthorId);
          op.attribs = map.toString();
        }
      }
      assem.append(op);
    }
    assem.endDocument();

    // although we have instantiated the dstPad with '\n', an additional '\n' is
    // added internally, so the pad text on the revision 0 is "\n\n"
    const oldLength = 2;

    const newLength = assem.getLengthChange();
    const newText = oldAText.text;

    // create a changeset that removes the previous text and add the newText with
    // all atributes present on the source pad
    const changeset = pack(oldLength, newLength, assem.toString(), newText);
    dstPad.appendRevision(changeset, authorId);

    await hooks.aCallAll('padCopy', {
      get originalPad() {