sirrobert-terminal/src/Terminal.js

A class for interacting with shell terminals.

function gen_move_str (num) {
  return "\033" + "[" (num || "") + "D";
}

function Terminal () {
}

Terminal.prototype.get_cols = function () {
  return process.stdout.columns;
};

Terminal.prototype.get_rows = function () {
  return process.stdout.rows;
};

Terminal.prototype.cr = function () {
  process.stdout.write("\r");
}

Terminal.prototype.clearLine = function () {
  this.cr();
  process.stdout.write(Array(this.get_cols()).join(" "));
  this.cr();
}

Terminal.prototype.left = function (num) {
  if (typeof num === "undefined") {
    process.stdout.write(this.left_str);
  } else {
    for (var i = 0; i < num; i++) {
      process.stdout.write(this.left_str);
    }
  }
}

Terminal.prototype.right = function (num) {
  if (typeof num === "undefined") {
    process.stdout.write(this.right_str);
  } else {
    for (var i = 0; i < num; i++) {
      process.stdout.write(this.right_str);
    }
  }
}

Terminal.prototype.left_str  = "";
Terminal.prototype.right_str = "";

module.exports = Terminal;