107 lines
2.6 KiB
Plaintext
107 lines
2.6 KiB
Plaintext
/**
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* @file 字符串相关的函数
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* @author mengke01(kekee000@gmail.com)
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*/
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export default {
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/**
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* HTML解码字符串
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*
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* @param {string} source 源字符串
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* @return {string}
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*/
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decodeHTML(source) {
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const str = String(source)
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.replace(/"/g, '"')
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.replace(/</g, '<')
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.replace(/>/g, '>')
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.replace(/&/g, '&');
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// 处理转义的中文和实体字符
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return str.replace(/&#([\d]+);/g, ($0, $1) => String.fromCodePoint(parseInt($1, 10)));
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},
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/**
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* HTML编码字符串
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*
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* @param {string} source 源字符串
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* @return {string}
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*/
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encodeHTML(source) {
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return String(source)
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.replace(/&/g, '&')
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.replace(/</g, '<')
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.replace(/>/g, '>')
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.replace(/"/g, '"')
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.replace(/'/g, ''');
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},
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/**
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* 获取string字节长度
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*
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* @param {string} source 源字符串
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* @return {number} 长度
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*/
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getLength(source) {
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// eslint-disable-next-line no-control-regex
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return String(source).replace(/[^\x00-\xff]/g, '11').length;
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},
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/**
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* 字符串格式化，支持如 ${xxx.xxx} 的语法
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*
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* @param {string} source 模板字符串
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* @param {Object} data 数据
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* @return {string} 格式化后字符串
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*/
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format(source, data) {
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return source.replace(/\$\{([\w.]+)\}/g, ($0, $1) => {
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const ref = $1.split('.');
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let refObject = data;
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let level;
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while (refObject != null && (level = ref.shift())) {
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refObject = refObject[level];
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}
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return refObject != null ? refObject : '';
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});
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},
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/**
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* 使用指定字符填充字符串,默认`0`
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*
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* @param {string} str 字符串
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* @param {number} size 填充到的大小
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* @param {string=} ch 填充字符
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* @return {string} 字符串
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*/
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pad(str, size, ch) {
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str = String(str);
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if (str.length > size) {
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return str.slice(str.length - size);
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}
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return new Array(size - str.length + 1).join(ch || '0') + str;
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},
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/**
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* 获取字符串哈希编码
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*
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* @param {string} str 字符串
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* @return {number} 哈希值
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*/
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hashcode(str) {
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if (!str) {
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return 0;
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}
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let hash = 0;
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for (let i = 0, l = str.length; i < l; i++) {
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hash = 0x7FFFFFFFF & (hash * 31 + str.charCodeAt(i));
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}
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return hash;
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}
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};
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