77 lines
3.1 KiB
JavaScript
77 lines
3.1 KiB
JavaScript
"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.getTrie = exports.encodeHTMLTrieRe = exports.getCodePoint = void 0;
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var entities_json_1 = __importDefault(require("./maps/entities.json"));
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function isHighSurrugate(c) {
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return (c & 64512 /* Mask */) === 55296 /* High */;
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}
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// For compatibility with node < 4, we wrap `codePointAt`
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exports.getCodePoint =
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// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
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String.prototype.codePointAt != null
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? function (str, index) { return str.codePointAt(index); }
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: // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
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function (c, index) {
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return isHighSurrugate(c.charCodeAt(index))
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? (c.charCodeAt(index) - 55296 /* High */) * 0x400 +
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c.charCodeAt(index + 1) -
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0xdc00 +
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0x10000
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: c.charCodeAt(index);
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};
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var htmlTrie = getTrie(entities_json_1.default);
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function encodeHTMLTrieRe(regExp, str) {
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var _a;
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var ret = "";
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var lastIdx = 0;
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var match;
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while ((match = regExp.exec(str)) !== null) {
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var i = match.index;
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var char = str.charCodeAt(i);
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var next = htmlTrie.get(char);
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if (next) {
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if (next.next != null && i + 1 < str.length) {
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var value = (_a = next.next.get(str.charCodeAt(i + 1))) === null || _a === void 0 ? void 0 : _a.value;
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if (value != null) {
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ret += str.substring(lastIdx, i) + value;
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regExp.lastIndex += 1;
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lastIdx = i + 2;
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continue;
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}
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}
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ret += str.substring(lastIdx, i) + next.value;
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lastIdx = i + 1;
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}
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else {
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ret += str.substring(lastIdx, i) + "&#x" + exports.getCodePoint(str, i).toString(16) + ";";
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// Increase by 1 if we have a surrogate pair
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lastIdx = regExp.lastIndex += Number(isHighSurrugate(char));
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}
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}
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return ret + str.substr(lastIdx);
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}
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exports.encodeHTMLTrieRe = encodeHTMLTrieRe;
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function getTrie(map) {
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var _a, _b, _c, _d;
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var trie = new Map();
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for (var _i = 0, _e = Object.keys(map); _i < _e.length; _i++) {
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var value = _e[_i];
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var key = map[value];
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// Resolve the key
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var lastMap = trie;
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for (var i = 0; i < key.length - 1; i++) {
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var char = key.charCodeAt(i);
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var next = (_a = lastMap.get(char)) !== null && _a !== void 0 ? _a : {};
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lastMap.set(char, next);
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lastMap = (_b = next.next) !== null && _b !== void 0 ? _b : (next.next = new Map());
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}
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var val = (_c = lastMap.get(key.charCodeAt(key.length - 1))) !== null && _c !== void 0 ? _c : {};
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(_d = val.value) !== null && _d !== void 0 ? _d : (val.value = "&" + value + ";");
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lastMap.set(key.charCodeAt(key.length - 1), val);
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}
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return trie;
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}
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exports.getTrie = getTrie;
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