Method performEncode

src/Encoder/MorseCode.js:129–182

* 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
   */
  performEncode (content) {
    const representation = this.getSettingValue('representation')

    let shortMark = '.'
    let longerMark = '-'
    let spaceMark = '/'

    if (representation === 'code') {
      shortMark = this.getSettingValue('shortMark').getString()
      longerMark = this.getSettingValue('longerMark').getString()
      spaceMark = this.getSettingValue('spaceMark').getString()
    }

    let string = content.toLowerCase().getChars()
      // Encode each character
      .map(char => {
        const code = MorseCodeEncoder.encodeCharacter(
          char, shortMark, longerMark, spaceMark)

        if (code === null) {
          throw new InvalidInputError(
            `Char '${char}' is not defined in morse code`)
        }
        return code
      })
      // Glue it back together
      .join(' ')

    if (representation === 'timing') {
      // Translate to timing representation
      const signalOnMark = this.getSettingValue('signalOnMark').getString()
      const signalOffMark = this.getSettingValue('signalOffMark').getString()

      string = string
        .split('')
        .map(symbol => {
          switch (symbol) {
            // Dit
            case '.':
              return signalOnMark
            // Dah
            case '-':
              return signalOnMark.repeat(3)
            // Letter and word space
            default:
              return signalOffMark
          }
        })
        // Glue together and add symbol space
        .join(signalOffMark)
    }

    return string
  }

  /**
   * Performs decode on given content.