jlb-tools/lib/handleText.js

js工具库

var utf16toEntities = require("./.internal/utf16toEntities");
var entitiestoUtf16 = require("./.internal/entitiestoUtf16");

/**
 * @description 处理文本，客户端无法识别h5的br标签和空格符，因此需要处理br标签为\n和空格符为 ''
 * @param {string} str 需要编译/转义的字符串
 * @param {string} type encode 编译 decode 转义
 * @returns {string} 编译/转义后的字符串
 * @example
 * handleText("<br>&nbsp;&lt;&gt;", "encode") => "\n <>"
 * handleText("\n <>", "decode") => "<br>&nbsp;&lt;&gt;"
 */
function handleText(str = "", type = "encode") {
  if (!str) return "";
  if (typeof str !== "string") {
    console.error("handleText数据类型需要是字符串类型");
    return str;
  }
  /* eslint-disable no-unused-vars */
  let newStr = null;
  if (type === "encode") {
    newStr = entitiestoUtf16(str)
      .replace(/<br>/gi, "\n")
      .replace(/&nbsp;/g, " ")
      .replace("&lt;", "<")
      .replace("&gt;", ">");
  } else if (type === "decode") {
    newStr = utf16toEntities(str)
      .replace("<", "&lt;")
      .replace(">", "&gt;")
      .replace(/\n|\r\n/g, "<br>")
      .replace(/[ ]/g, "&nbsp;");
  } else {
    return str;
  }
  return newStr;
}
module.exports = handleText;