encode.js
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"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.escape = exports.encodeHTML = exports.encodeXML = void 0;
var xml_json_1 = __importDefault(require("./maps/xml.json"));
var inverseXML = getInverseObj(xml_json_1.default);
var xmlReplacer = getInverseReplacer(inverseXML);
exports.encodeXML = getInverse(inverseXML, xmlReplacer);
var entities_json_1 = __importDefault(require("./maps/entities.json"));
var inverseHTML = getInverseObj(entities_json_1.default);
var htmlReplacer = getInverseReplacer(inverseHTML);
exports.encodeHTML = 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 = [];
var multiple = [];
for (var _i = 0, _a = Object.keys(inverse); _i < _a.length; _i++) {
var k = _a[_i];
if (k.length === 1) {
// Add value to single array
single.push("\\" + k);
}
else {
// Add value to multiple array
multiple.push(k);
}
}
// Add ranges to single characters.
single.sort();
for (var start = 0; start < single.length - 1; start++) {
// Find the end of a run of characters
var end = start;
while (end < single.length - 1 &&
single[end].charCodeAt(1) + 1 === single[end + 1].charCodeAt(1)) {
end += 1;
}
var count = 1 + end - start;
// We want to replace at least three characters
if (count < 3)
continue;
single.splice(start, count, single[start] + "-" + single[end]);
}
multiple.unshift("[" + single.join("") + "]");
return new RegExp(multiple.join("|"), "g");
}
var reNonASCII = /(?:[\x80-\uD7FF\uE000-\uFFFF]|[\uD800-\uDBFF][\uDC00-\uDFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF])/g;
function singleCharReplacer(c) {
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
return "&#x" + c.codePointAt(0).toString(16).toUpperCase() + ";";
}
function getInverse(inverse, re) {
return function (data) {
return data
.replace(re, function (name) { return inverse[name]; })
.replace(reNonASCII, singleCharReplacer);
};
}
var reXmlChars = getInverseReplacer(inverseXML);
function escape(data) {
return data
.replace(reXmlChars, singleCharReplacer)
.replace(reNonASCII, singleCharReplacer);
}
exports.escape = escape;