Method _isClearAuthorship

src/node/utils/padDiff.ts:38–80

(changeset: any)

    this._authors = [];
  }
  _isClearAuthorship(changeset: any){
    // unpack
    const unpacked = unpack(changeset);

    // check if there is nothing in the charBank
    if (unpacked.charBank !== '') {
      return false;
    }

    // check if oldLength == newLength
    if (unpacked.oldLen !== unpacked.newLen) {
      return false;
    }

    const [clearOperator, anotherOp] = deserializeOps(unpacked.ops);

    // check if there is only one operator
    if (anotherOp != null) return false;

    // check if this operator doesn't change text
    if (clearOperator.opcode !== '=') {
      return false;
    }

    // check that this operator applys to the complete text
    // if the text ends with a new line, its exactly one character less, else it has the same length
    if (clearOperator.chars !== unpacked.oldLen - 1 && clearOperator.chars !== unpacked.oldLen) {
      return false;
    }

    const [appliedAttribute, anotherAttribute] =
        attributes.attribsFromString(clearOperator.attribs, this._pad.pool);

    // Check that the operation has exactly one attribute.
    if (appliedAttribute == null || anotherAttribute != null) return false;

    // check if the applied attribute is an anonymous author attribute
    if (appliedAttribute[0] !== 'author' || appliedAttribute[1] !== '') {
      return false;
    }

    return true;
  }
  async _createClearAuthorship(rev: any){
    const atext = await this._pad.getInternalRevisionAText(rev);