util-helpers/lib/isChinese.js

一个基于业务场景的工具方法库

'use strict';

var ut2 = require('ut2');
var native = require('./utils/native.js');

var chineseDictionary = {
    chineseBasic: '[\u4e00-\u9fa5]',
    chineseExtend: '[\u9ea6-\u9fff]',
    chineseExtend2: '[\uF900-\uFAD9]',
    chineseExtendA: '[\u3400-\u4DBF]',
    chineseExtendB: "[\uD840\uDC00-\uD869\uDEDF]",
    chineseExtendC: "[\uD869\uDF00-\uD86D\uDF38]",
    chineseExtendD: "[\uD86D\uDF40-\uD86E\uDC1D]",
    chineseExtendE: "[\uD86E\uDC20-\uD873\uDEA1]",
    chineseExtendF: "[\uD873\uDEB0-\uD87A\uDFE0]",
    chineseExtendG: "[\uD880\uDC00-\uD884\uDF4A]",
    chineseExtendH: "[\uD884\uDF50-\uD888\uDFAF]",
    chineseExtendI: "[\uD87A\uDFF0-\uD87B\uDE5D]"
};
var looseChineseRegExp = chineseDictionary.chineseBasic + '+';
var chineseRegExp = '^' + chineseDictionary.chineseBasic + '+$';
var chineseWithExtend = '(?:' + native.objectValues(chineseDictionary).join('|') + ')';
var looseChineseExtendRegExp = chineseWithExtend + '+';
var chineseExtendRegExp = '^' + chineseWithExtend + '+$';
var supportRegExpUnicode = RegExp.prototype.hasOwnProperty('unicode');
function isChinese(value, options) {
    if (options === void 0) { options = {}; }
    var _a = options.loose, loose = _a === void 0 ? false : _a, _b = options.useExtend, useExtend = _b === void 0 ? false : _b;
    var valueStr = ut2.toString(value);
    var basicRegExp = loose ? looseChineseRegExp : chineseRegExp;
    var extendRegExp = loose ? looseChineseExtendRegExp : chineseExtendRegExp;
    var hasExtend = useExtend && supportRegExpUnicode;
    var resultRegExp = hasExtend ? extendRegExp : basicRegExp;
    var flag = hasExtend ? 'u' : native.nativeUndefined;
    var reg = new RegExp(resultRegExp, flag);
    return reg.test(valueStr);
}

module.exports = isChinese;