js-markdown/lib/utils/Str.js

A markdown language js compiler.

'use strict';

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _Valid = _interopRequireDefault(require("./Valid"));

function _createForOfIteratorHelper(o, allowArrayLike) { var it; if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = o[Symbol.iterator](); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

/**
 * String.at polyfill
 * @param index
 * @returns {*}
 */
function at(index) {
  if (!this) {
    throw TypeError();
  }

  var str = '' + this,
      len = str.length;

  if (index >= len) {
    return;
  }

  if (index < 0) {
    index = len - index;
  }

  var i = 0;

  var _iterator = _createForOfIteratorHelper(str),
      _step;

  try {
    for (_iterator.s(); !(_step = _iterator.n()).done;) {
      var item = _step.value;

      if (i === index) {
        return item;
      }
    }
  } catch (err) {
    _iterator.e(err);
  } finally {
    _iterator.f();
  }

  return;
}
/**
 * string trim handle method
 * @param str
 * @param chars
 * @param position
 */


function trimHandle(str) {
  var chars = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : ' ';
  var position = arguments.length > 2 ? arguments[2] : undefined;

  if (typeof str !== 'string') {
    return;
  }

  var cs = chars;

  if (_Valid["default"].isArray(chars)) {
    cs = chars.join('');
  }

  var startReg = new RegExp("^[".concat(cs, "]*"), 'g'),
      endReg = new RegExp("[".concat(cs, "]*$"), 'g');

  if (position === 'start') {
    return str.replace(startReg, '');
  } else if (position === 'end') {
    return str.replace(endReg, '');
  }

  return str.replace(startReg, '').replace(endReg, '');
}
/**
 * string trim start(left)
 * @param str
 * @param chars
 * @returns {*}
 */


function trimStart(str) {
  var chars = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : ' ';
  return trimHandle(str, chars, 'start');
}
/**
 * string trim end(right)
 * @param str
 * @param chars
 * @returns {*}
 */


function trimEnd(str) {
  var chars = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : ' ';
  return trimHandle(str, chars, 'end');
}
/**
 * string trim(left and right)
 * @param str
 * @param chars
 * @returns {*}
 */


function trim(str) {
  var chars = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : ' ';
  return trimHandle(str, chars);
}
/**
 * replace \r or \r\n to \n
 * @param str
 */


function formatCRLF(str) {
  return str.replace(/\r\n?/g, '\n');
}

;
/**
 * get line count
 * @param str
 * @returns {number}
 */

function countLines(str) {
  return str.split('\n').length - 1;
}

;
/**
 * replace specific symbol of html
 * @param str
 * @returns {*}
 */

function encodeHTML(str) {
  if (!str) {
    return str;
  }

  return str.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#39;');
}
/**
 * match a url
 * @param str
 */


function matchUrl(str) {
  var reg = /^(?:\s*)(?:(?:https?|ftp):\/\/)(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)(?:\.(?:[a-z\u00a1-\uffff0-9]+-?)*[a-z\u00a1-\uffff0-9]+)*(?:\.(?:[a-z\u00a1-\uffff]{2,})))(?::\d{2,5})?(?:\/[^\s]*)?/i;
  return str.match(reg);
}

var _default = {
  at: at,
  trimHandle: trimHandle,
  trimStart: trimStart,
  trimEnd: trimEnd,
  trim: trim,
  formatCRLF: formatCRLF,
  countLines: countLines,
  encodeHTML: encodeHTML,
  matchUrl: matchUrl
};
exports["default"] = _default;