forked from zhurui/management
83 lines
2.0 KiB
JavaScript
83 lines
2.0 KiB
JavaScript
|
var inverseXML = getInverseObj(require("../maps/xml.json")),
|
||
|
|
xmlReplacer = getInverseReplacer(inverseXML);
|
||
|
|
|
||
|
|
exports.XML = getInverse(inverseXML, xmlReplacer);
|
||
|
|
|
||
|
|
var inverseHTML = getInverseObj(require("../maps/entities.json")),
|
||
|
|
htmlReplacer = getInverseReplacer(inverseHTML);
|
||
|
|
|
||
|
|
exports.HTML = getInverse(inverseHTML, htmlReplacer);
|
||
|
|
|
||
|
|
function getInverseObj(obj) {
|
||
|
|
return Object.keys(obj)
|
||
|
|
.sort()
|
||
|
|
.reduce(function(inverse, name) {
|
||
|
|
inverse[obj[name]] = "&" + name + ";";
|
||
|
|
return inverse;
|
||
|
|
}, {});
|
||
|
|
}
|
||
|
|
|
||
|
|
function getInverseReplacer(inverse) {
|
||
|
|
var single = [],
|
||
|
|
multiple = [];
|
||
|
|
|
||
|
|
Object.keys(inverse).forEach(function(k) {
|
||
|
|
if (k.length === 1) {
|
||
|
|
single.push("\\" + k);
|
||
|
|
} else {
|
||
|
|
multiple.push(k);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
//TODO add ranges
|
||
|
|
multiple.unshift("[" + single.join("") + "]");
|
||
|
|
|
||
|
|
return new RegExp(multiple.join("|"), "g");
|
||
|
|
}
|
||
|
|
|
||
|
|
var re_nonASCII = /[^\0-\x7F]/g,
|
||
|
|
re_astralSymbols = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g;
|
||
|
|
|
||
|
|
function singleCharReplacer(c) {
|
||
|
|
return (
|
||
|
|
"&#x" +
|
||
|
|
c
|
||
|
|
.charCodeAt(0)
|
||
|
|
.toString(16)
|
||
|
|
.toUpperCase() +
|
||
|
|
";"
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
function astralReplacer(c) {
|
||
|
|
// http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
|
||
|
|
var high = c.charCodeAt(0);
|
||
|
|
var low = c.charCodeAt(1);
|
||
|
|
var codePoint = (high - 0xd800) * 0x400 + low - 0xdc00 + 0x10000;
|
||
|
|
return "&#x" + codePoint.toString(16).toUpperCase() + ";";
|
||
|
|
}
|
||
|
|
|
||
|
|
function getInverse(inverse, re) {
|
||
|
|
function func(name) {
|
||
|
|
return inverse[name];
|
||
|
|
}
|
||
|
|
|
||
|
|
return function(data) {
|
||
|
|
return data
|
||
|
|
.replace(re, func)
|
||
|
|
.replace(re_astralSymbols, astralReplacer)
|
||
|
|
.replace(re_nonASCII, singleCharReplacer);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
var re_xmlChars = getInverseReplacer(inverseXML);
|
||
|
|
|
||
|
|
function escapeXML(data) {
|
||
|
|
return data
|
||
|
|
.replace(re_xmlChars, singleCharReplacer)
|
||
|
|
.replace(re_astralSymbols, astralReplacer)
|
||
|
|
.replace(re_nonASCII, singleCharReplacer);
|
||
|
|
}
|
||
|
|
|
||
|
|
exports.escape = escapeXML;
|