cli-util/lib/pad.js

Utility functions for the cli toolkit

var repeat = require('./repeat');

/**
 *  Pad a string with leading or trailing whitespace.
 *
 *  Default is to add trailing whitespace.
 *
 *  @param str The string to pad.
 *  @param width The target character width.
 *  @param leading Pad before the string.
 */
module.exports = function pad(str, width, leading) {
  var len = Math.max(0, width - str.length);
  return leading ? repeat(len) + str : str + repeat(len);
}