comment/lib/helper.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.isFunction = isFunction;
exports.isUrl = isUrl;
exports.arrayToObject = arrayToObject;
exports.htmlEncode = htmlEncode;
exports.renderContent = renderContent;

var _constant = require("./constant");

var _emoji = require("./emoji");

var _emoji2 = _interopRequireDefault(_emoji);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var emojiObejct = arrayToObject(_emoji2.default, "title");

function isFunction(functionToCheck) {
  return functionToCheck && {}.toString.call(functionToCheck) === "[object Function]";
}

function isUrl(userInput) {
  // 需完整匹配
  var regexp = /^((http(s)?:)?\/\/.)?(www\.)?[-a-zA-Z0-9@:%._+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_+.~#?&//=]*)/g;
  var res = userInput.match(regexp);
  if (res === null) return false;else return true;
}

/**
 * 将对象数组转换为对象
 * @param {array} array Array of Objects
 * @param {string} keyField string
 */
function arrayToObject(array, keyField) {
  return array.reduce(function (obj, item) {
    obj[item[keyField]] = item;
    return obj;
  }, {});
}

/**
 * HTML 编码
 * 将 < > 等字符串进行编码
 * @param {string} str 文本
 */
function htmlEncode(str) {
  if (!str) return "";
  return str.replace(/[<>]/gim, function (i) {
    return "&#" + i.charCodeAt(0) + ";";
  });
}

/**
 * 渲染编辑器
 * [x] => <img src="x" />
 * @param {strig} content
 */
function renderContent(content, onClick) {
  var newContent = content;
  if (newContent.indexOf(_constant.IMAGE_SPLIT) !== -1) {
    newContent = newContent.split(_constant.IMAGE_SPLIT);
    newContent.pop();
    newContent = newContent.join("");
  }
  // 不包含在标签内的链接
  var innerUrl = /((http(s)?:)?\/\/)?(www\.)?[-a-zA-Z0-9@:%._+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_+.~#?&//=]*)(?![^<>]*>|[^"]*?<\/a)/g;
  var data = htmlEncode(newContent).replace(_constant.REGEXP, function (a, b) {
    var src = a.slice(1, -1);

    // 兼容旧的评
    // 因为旧的评论用 [img url] 方式存储的
    if (isUrl(src)) {
      return "<a href=\"" + src + "\" rel=\"noopener noreferrer\" target=\"_blank\"><img class=\"comment-img\" src=\"" + src + "\" alt=\"" + src + "\" /></a>";
    }
    // 如果不存在对应的表情, 则返回原文
    var emoji = emojiObejct[src];
    if (emoji) {
      return "<img class=\"comment-emoji\" src=\"" + _emoji.prefixUrl + emoji.value + "." + emoji.ext + "\" alt=\"" + emoji.title + "\" />";
    }
    return "[" + src + "]";
  }).replace(innerUrl, function (a, b) {
    var protocol = /^(https?:)?\/\//;
    var hasProtocol = protocol.test(a);
    var url = hasProtocol ? a : "//" + a;
    // target="_blank" 存在安全性问题
    // return `<a href="${url}" target="_blank" rel="noopener noreferrer" >${a}</a>`;
    return "<a href=\"" + url + "\">" + a + "</a>";
  }).replace(/\n/g, "<br />");
  return data;
}
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