179 lines
7.6 KiB
JavaScript
179 lines
7.6 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.decodeXML = exports.decodeHTMLStrict = exports.decodeHTML = exports.determineBranch = exports.BinTrieFlags = exports.fromCodePoint = exports.replaceCodePoint = exports.decodeCodePoint = exports.xmlDecodeTree = exports.htmlDecodeTree = void 0;
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var decode_data_html_js_1 = __importDefault(require("./generated/decode-data-html.js"));
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exports.htmlDecodeTree = decode_data_html_js_1.default;
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var decode_data_xml_js_1 = __importDefault(require("./generated/decode-data-xml.js"));
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exports.xmlDecodeTree = decode_data_xml_js_1.default;
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var decode_codepoint_js_1 = __importDefault(require("./decode_codepoint.js"));
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exports.decodeCodePoint = decode_codepoint_js_1.default;
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var decode_codepoint_js_2 = require("./decode_codepoint.js");
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Object.defineProperty(exports, "replaceCodePoint", { enumerable: true, get: function () { return decode_codepoint_js_2.replaceCodePoint; } });
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Object.defineProperty(exports, "fromCodePoint", { enumerable: true, get: function () { return decode_codepoint_js_2.fromCodePoint; } });
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var CharCodes;
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(function (CharCodes) {
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CharCodes[CharCodes["NUM"] = 35] = "NUM";
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CharCodes[CharCodes["SEMI"] = 59] = "SEMI";
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CharCodes[CharCodes["ZERO"] = 48] = "ZERO";
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CharCodes[CharCodes["NINE"] = 57] = "NINE";
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CharCodes[CharCodes["LOWER_A"] = 97] = "LOWER_A";
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CharCodes[CharCodes["LOWER_F"] = 102] = "LOWER_F";
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CharCodes[CharCodes["LOWER_X"] = 120] = "LOWER_X";
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/** Bit that needs to be set to convert an upper case ASCII character to lower case */
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CharCodes[CharCodes["To_LOWER_BIT"] = 32] = "To_LOWER_BIT";
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})(CharCodes || (CharCodes = {}));
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var BinTrieFlags;
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(function (BinTrieFlags) {
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BinTrieFlags[BinTrieFlags["VALUE_LENGTH"] = 49152] = "VALUE_LENGTH";
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BinTrieFlags[BinTrieFlags["BRANCH_LENGTH"] = 16256] = "BRANCH_LENGTH";
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BinTrieFlags[BinTrieFlags["JUMP_TABLE"] = 127] = "JUMP_TABLE";
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})(BinTrieFlags = exports.BinTrieFlags || (exports.BinTrieFlags = {}));
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function getDecoder(decodeTree) {
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return function decodeHTMLBinary(str, strict) {
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var ret = "";
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var lastIdx = 0;
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var strIdx = 0;
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while ((strIdx = str.indexOf("&", strIdx)) >= 0) {
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ret += str.slice(lastIdx, strIdx);
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lastIdx = strIdx;
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// Skip the "&"
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strIdx += 1;
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// If we have a numeric entity, handle this separately.
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if (str.charCodeAt(strIdx) === CharCodes.NUM) {
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// Skip the leading "&#". For hex entities, also skip the leading "x".
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var start = strIdx + 1;
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var base = 10;
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var cp = str.charCodeAt(start);
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if ((cp | CharCodes.To_LOWER_BIT) === CharCodes.LOWER_X) {
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base = 16;
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strIdx += 1;
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start += 1;
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}
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do
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cp = str.charCodeAt(++strIdx);
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while ((cp >= CharCodes.ZERO && cp <= CharCodes.NINE) ||
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(base === 16 &&
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(cp | CharCodes.To_LOWER_BIT) >= CharCodes.LOWER_A &&
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(cp | CharCodes.To_LOWER_BIT) <= CharCodes.LOWER_F));
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if (start !== strIdx) {
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var entity = str.substring(start, strIdx);
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var parsed = parseInt(entity, base);
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if (str.charCodeAt(strIdx) === CharCodes.SEMI) {
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strIdx += 1;
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}
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else if (strict) {
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continue;
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}
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ret += (0, decode_codepoint_js_1.default)(parsed);
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lastIdx = strIdx;
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}
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continue;
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}
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var resultIdx = 0;
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var excess = 1;
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var treeIdx = 0;
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var current = decodeTree[treeIdx];
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for (; strIdx < str.length; strIdx++, excess++) {
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treeIdx = determineBranch(decodeTree, current, treeIdx + 1, str.charCodeAt(strIdx));
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if (treeIdx < 0)
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break;
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current = decodeTree[treeIdx];
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var masked = current & BinTrieFlags.VALUE_LENGTH;
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// If the branch is a value, store it and continue
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if (masked) {
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// If we have a legacy entity while parsing strictly, just skip the number of bytes
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if (!strict || str.charCodeAt(strIdx) === CharCodes.SEMI) {
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resultIdx = treeIdx;
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excess = 0;
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}
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// The mask is the number of bytes of the value, including the current byte.
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var valueLength = (masked >> 14) - 1;
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if (valueLength === 0)
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break;
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treeIdx += valueLength;
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}
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}
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if (resultIdx !== 0) {
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var valueLength = (decodeTree[resultIdx] & BinTrieFlags.VALUE_LENGTH) >> 14;
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ret +=
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valueLength === 1
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? String.fromCharCode(decodeTree[resultIdx] & ~BinTrieFlags.VALUE_LENGTH)
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: valueLength === 2
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? String.fromCharCode(decodeTree[resultIdx + 1])
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: String.fromCharCode(decodeTree[resultIdx + 1], decodeTree[resultIdx + 2]);
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lastIdx = strIdx - excess + 1;
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}
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}
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return ret + str.slice(lastIdx);
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};
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}
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function determineBranch(decodeTree, current, nodeIdx, char) {
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var branchCount = (current & BinTrieFlags.BRANCH_LENGTH) >> 7;
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var jumpOffset = current & BinTrieFlags.JUMP_TABLE;
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// Case 1: Single branch encoded in jump offset
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if (branchCount === 0) {
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return jumpOffset !== 0 && char === jumpOffset ? nodeIdx : -1;
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}
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// Case 2: Multiple branches encoded in jump table
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if (jumpOffset) {
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var value = char - jumpOffset;
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return value < 0 || value >= branchCount
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? -1
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: decodeTree[nodeIdx + value] - 1;
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}
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// Case 3: Multiple branches encoded in dictionary
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// Binary search for the character.
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var lo = nodeIdx;
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var hi = lo + branchCount - 1;
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while (lo <= hi) {
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var mid = (lo + hi) >>> 1;
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var midVal = decodeTree[mid];
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if (midVal < char) {
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lo = mid + 1;
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}
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else if (midVal > char) {
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hi = mid - 1;
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}
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else {
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return decodeTree[mid + branchCount];
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}
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}
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return -1;
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}
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exports.determineBranch = determineBranch;
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var htmlDecoder = getDecoder(decode_data_html_js_1.default);
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var xmlDecoder = getDecoder(decode_data_xml_js_1.default);
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/**
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* Decodes an HTML string, allowing for entities not terminated by a semi-colon.
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*
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* @param str The string to decode.
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* @returns The decoded string.
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*/
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function decodeHTML(str) {
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return htmlDecoder(str, false);
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}
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exports.decodeHTML = decodeHTML;
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/**
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* Decodes an HTML string, requiring all entities to be terminated by a semi-colon.
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*
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* @param str The string to decode.
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* @returns The decoded string.
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*/
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function decodeHTMLStrict(str) {
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return htmlDecoder(str, true);
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}
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exports.decodeHTMLStrict = decodeHTMLStrict;
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/**
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* Decodes an XML string, requiring all entities to be terminated by a semi-colon.
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*
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* @param str The string to decode.
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* @returns The decoded string.
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*/
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function decodeXML(str) {
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return xmlDecoder(str, true);
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}
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exports.decodeXML = decodeXML;
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//# sourceMappingURL=decode.js.map
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