Method performEncode

src/Encoder/Punycode.js:66–89

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

(content)

   * @return {number[]|string|Uint8Array|Chain|Promise} Encoded content
   */
  async performEncode (content) {
    // Punycode is case insensitive, lowercase the content before continuing
    content = content.toLowerCase()

    // Split domain into labels
    const labels = content.split('.')
    const encodedParts = new Array(labels.length)

    // Encode each part separately
    for (let i = 0; i < labels.length; i++) {
      // Check if the code points are all basic
      if (this._nonBasicCodePointIndex(labels[i].getCodePoints()) === -1) {
        // Return the part as is
        encodedParts[i] = labels[i]
      } else {
        // Encode part using Bootstring and prepend IDNA prefix
        const result = await this._bootstringEncoder.encode(labels[i])
        encodedParts[i] = prefix + result.getString()
      }
    }

    // Stick domain labels back together
    return Chain.join(encodedParts, '.')
  }

  /**
   * Performs decode on given content.