Method findAndDelete

lib/script/script.js:1307–1348

* Remove all matched data elements from * a script's code (used to remove signatures * before verification). Note that this * compares and removes data on the _byte level_. * It also reserializes the data to a single * script with minimaldata encoding beforehand. * A signature will

(data)

   */

  findAndDelete(data) {
    const target = Opcode.fromPush(data);

    if (this.raw.length < target.getSize())
      return 0;

    let found = false;

    for (const op of this.code) {
      if (op.value === -1)
        break;

      if (op.equals(target)) {
        found = true;
        break;
      }
    }

    if (!found)
      return 0;

    const code = [];

    let total = 0;

    for (const op of this.code) {
      if (op.value === -1)
        break;

      if (op.equals(target)) {
        total += 1;
        continue;
      }

      code.push(op);
    }

    this.code = code;
    this.compile();

    return total;
  }

  /**
   * Find a data element in a script.