@qbyco/tjs-cli/lib/cli/Parser/Parser.js

TrafaletJS CLI Tool

/**
 * @module lib/cli/Parser
 */
class Parser {

  /**
   * @class Parser
   * @constructor
   * @param {lib/cli/Command/Command} command
   */
  constructor (command) {
    this.command = command;
    this.input   = [];
  }

  /**
   * @method setInput
   * @param input
   * @returns {Parser}
   */
  setInput (input) {
    this.input = input;
    return this;
  }

  /**
   * @method getInput
   * @returns {Array|*}
   */
  getInput () {
    return this.input;
  }

  parse (input) {
    this.setInput(input);
    this.parseCommand();
    this.parseFlags();
    this.parseParams();
  }

  /**
   * @method parseCommand
   * @returns {bool | Parser}
   */
  parseCommand () {
    let command = this.getInput()[0];
    if ("-" === command.slice(0,1)) {
      return false;
    }

    this.command.setName(command);
    if (/\:/.test(command)) {
      this.command.setName(command.split(":").shift());
      this.command.setAction(command.split(":").pop());
    }

    return this;
  }

  /**
   * @method parseFlags
   * @returns {Parser}
   */
  parseFlags () {
    if (0 < this.getInput().length) {
      this.getInput().forEach((param) => {
        let key, value;

        if ("--" !== param.slice(0,2)) {
          return false;
        }

        param = param.slice(2);
        key = param;
        value = true;
        if (/=/.test(param)) {
          key = param.split("=").shift();
          value= param.split("=").pop();
        }

        if (value === "false") {
          value = false;
        }
        this.command.addFlag(key, value);
      });
    }

    return this;
  }

  /**
   * @method parseParams
   * @returns {Parser}
   */
  parseParams () {
    if (0 < this.getInput().length) {
      this.getInput().forEach((param) => {
        if ("-" === param.slice(0,1)) {
          return false;
        }

        if (/\:/.test(param)) {
          return false;
        }

        this.command.addParam(param);
      });
    }

    return this;
  }

}

module.exports = Parser;