Method performEncode

src/Encoder/BaconCipher.js:112–143

* Performs encode on given content. * @protected * @param {Chain} content * @return {number[]|string|Uint8Array|Chain} Encoded content

(content)

   * @return {number[]|string|Uint8Array|Chain} Encoded content
   */
  performEncode (content) {
    const { alphabet, codes, codeLength } = this._getVariant()
    const aChar = this.getSettingValue('aMark').getCharAt(0)
    const bChar = this.getSettingValue('bMark').getCharAt(0)

    // Prepare content
    const lowercaseContent = content.toLowerCase()

    // Map input to alphabet codes
    let result = ''
    let codeIndex

    for (let i = 0; i < lowercaseContent.getLength(); i++) {
      codeIndex = alphabet.indexOf(lowercaseContent.getCharAt(i))
      if (codeIndex !== -1) {
        result += codes[codeIndex]
      }
    }

    // Map code marks, if not using the defaults
    if (aChar !== 'a' || bChar !== 'b') {
      result = result
        .split('')
        .map(mark => mark === 'a' ? aChar : bChar)
        .join('')
    }

    // Chunk codes separated by a whitespace
    return ArrayUtil.chunk(Chain.wrap(result).getChars(), codeLength)
      .map(slice => slice.join(''))
      .join(' ')
  }

  /**
   * Performs decode on given content.