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155 lines
2.9 KiB
155 lines
2.9 KiB
var ALPHA_INDEX = {
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'<': '<',
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'>': '>',
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'"': '"',
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'&apos': '\'',
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'&': '&',
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'<': '<',
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'>': '>',
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'"': '"',
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''': '\'',
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'&': '&'
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};
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var CHAR_INDEX = {
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60: 'lt',
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62: 'gt',
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34: 'quot',
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39: 'apos',
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38: 'amp'
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};
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var CHAR_S_INDEX = {
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'<': '<',
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'>': '>',
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'"': '"',
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'\'': ''',
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'&': '&'
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};
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/**
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* @constructor
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*/
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function XmlEntities() {}
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/**
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* @param {String} str
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* @returns {String}
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*/
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XmlEntities.prototype.encode = function(str) {
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if (!str || !str.length) {
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return '';
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}
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return str.replace(/<|>|"|'|&/g, function(s) {
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return CHAR_S_INDEX[s];
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});
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};
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/**
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* @param {String} str
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* @returns {String}
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*/
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XmlEntities.encode = function(str) {
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return new XmlEntities().encode(str);
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};
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/**
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* @param {String} str
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* @returns {String}
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*/
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XmlEntities.prototype.decode = function(str) {
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if (!str || !str.length) {
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return '';
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}
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return str.replace(/&#?[0-9a-zA-Z]+;?/g, function(s) {
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if (s.charAt(1) === '#') {
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var code = s.charAt(2).toLowerCase() === 'x' ?
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parseInt(s.substr(3), 16) :
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parseInt(s.substr(2));
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if (isNaN(code) || code < -32768 || code > 65535) {
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return '';
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}
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return String.fromCharCode(code);
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}
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return ALPHA_INDEX[s] || s;
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});
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};
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/**
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* @param {String} str
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* @returns {String}
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*/
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XmlEntities.decode = function(str) {
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return new XmlEntities().decode(str);
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};
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/**
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* @param {String} str
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* @returns {String}
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*/
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XmlEntities.prototype.encodeNonUTF = function(str) {
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if (!str || !str.length) {
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return '';
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}
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var strLength = str.length;
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var result = '';
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var i = 0;
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while (i < strLength) {
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var c = str.charCodeAt(i);
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var alpha = CHAR_INDEX[c];
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if (alpha) {
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result += "&" + alpha + ";";
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i++;
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continue;
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}
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if (c < 32 || c > 126) {
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result += '&#' + c + ';';
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} else {
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result += str.charAt(i);
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}
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i++;
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}
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return result;
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};
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/**
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* @param {String} str
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* @returns {String}
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*/
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XmlEntities.encodeNonUTF = function(str) {
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return new XmlEntities().encodeNonUTF(str);
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};
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/**
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* @param {String} str
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* @returns {String}
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*/
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XmlEntities.prototype.encodeNonASCII = function(str) {
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if (!str || !str.length) {
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return '';
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}
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var strLenght = str.length;
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var result = '';
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var i = 0;
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while (i < strLenght) {
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var c = str.charCodeAt(i);
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if (c <= 255) {
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result += str[i++];
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continue;
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}
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result += '&#' + c + ';';
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i++;
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}
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return result;
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};
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/**
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* @param {String} str
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* @returns {String}
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*/
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XmlEntities.encodeNonASCII = function(str) {
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return new XmlEntities().encodeNonASCII(str);
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};
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module.exports = XmlEntities;
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