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382 lines
12 KiB
382 lines
12 KiB
"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.Parser = void 0;
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var Tokenizer_1 = __importDefault(require("./Tokenizer"));
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var formTags = new Set([
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"input",
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"option",
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"optgroup",
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"select",
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"button",
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"datalist",
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"textarea",
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]);
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var pTag = new Set(["p"]);
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var openImpliesClose = {
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tr: new Set(["tr", "th", "td"]),
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th: new Set(["th"]),
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td: new Set(["thead", "th", "td"]),
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body: new Set(["head", "link", "script"]),
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li: new Set(["li"]),
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p: pTag,
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h1: pTag,
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h2: pTag,
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h3: pTag,
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h4: pTag,
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h5: pTag,
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h6: pTag,
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select: formTags,
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input: formTags,
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output: formTags,
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button: formTags,
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datalist: formTags,
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textarea: formTags,
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option: new Set(["option"]),
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optgroup: new Set(["optgroup", "option"]),
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dd: new Set(["dt", "dd"]),
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dt: new Set(["dt", "dd"]),
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address: pTag,
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article: pTag,
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aside: pTag,
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blockquote: pTag,
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details: pTag,
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div: pTag,
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dl: pTag,
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fieldset: pTag,
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figcaption: pTag,
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figure: pTag,
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footer: pTag,
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form: pTag,
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header: pTag,
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hr: pTag,
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main: pTag,
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nav: pTag,
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ol: pTag,
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pre: pTag,
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section: pTag,
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table: pTag,
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ul: pTag,
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rt: new Set(["rt", "rp"]),
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rp: new Set(["rt", "rp"]),
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tbody: new Set(["thead", "tbody"]),
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tfoot: new Set(["thead", "tbody"]),
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};
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var voidElements = new Set([
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"area",
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"base",
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"basefont",
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"br",
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"col",
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"command",
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"embed",
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"frame",
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"hr",
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"img",
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"input",
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"isindex",
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"keygen",
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"link",
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"meta",
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"param",
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"source",
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"track",
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"wbr",
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]);
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var foreignContextElements = new Set(["math", "svg"]);
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var htmlIntegrationElements = new Set([
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"mi",
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"mo",
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"mn",
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"ms",
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"mtext",
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"annotation-xml",
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"foreignObject",
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"desc",
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"title",
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]);
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var reNameEnd = /\s|\//;
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var Parser = /** @class */ (function () {
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function Parser(cbs, options) {
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if (options === void 0) { options = {}; }
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var _a, _b, _c, _d, _e;
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/** The start index of the last event. */
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this.startIndex = 0;
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/** The end index of the last event. */
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this.endIndex = null;
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this.tagname = "";
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this.attribname = "";
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this.attribvalue = "";
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this.attribs = null;
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this.stack = [];
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this.foreignContext = [];
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this.options = options;
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this.cbs = cbs !== null && cbs !== void 0 ? cbs : {};
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this.lowerCaseTagNames = (_a = options.lowerCaseTags) !== null && _a !== void 0 ? _a : !options.xmlMode;
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this.lowerCaseAttributeNames =
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(_b = options.lowerCaseAttributeNames) !== null && _b !== void 0 ? _b : !options.xmlMode;
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this.tokenizer = new ((_c = options.Tokenizer) !== null && _c !== void 0 ? _c : Tokenizer_1.default)(this.options, this);
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(_e = (_d = this.cbs).onparserinit) === null || _e === void 0 ? void 0 : _e.call(_d, this);
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}
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Parser.prototype.updatePosition = function (initialOffset) {
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if (this.endIndex === null) {
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if (this.tokenizer.sectionStart <= initialOffset) {
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this.startIndex = 0;
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}
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else {
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this.startIndex = this.tokenizer.sectionStart - initialOffset;
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}
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}
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else {
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this.startIndex = this.endIndex + 1;
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}
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this.endIndex = this.tokenizer.getAbsoluteIndex();
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};
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// Tokenizer event handlers
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Parser.prototype.ontext = function (data) {
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var _a, _b;
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this.updatePosition(1);
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this.endIndex--;
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(_b = (_a = this.cbs).ontext) === null || _b === void 0 ? void 0 : _b.call(_a, data);
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};
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Parser.prototype.onopentagname = function (name) {
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var _a, _b;
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if (this.lowerCaseTagNames) {
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name = name.toLowerCase();
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}
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this.tagname = name;
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if (!this.options.xmlMode &&
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Object.prototype.hasOwnProperty.call(openImpliesClose, name)) {
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var el = void 0;
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while (this.stack.length > 0 &&
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openImpliesClose[name].has((el = this.stack[this.stack.length - 1]))) {
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this.onclosetag(el);
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}
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}
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if (this.options.xmlMode || !voidElements.has(name)) {
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this.stack.push(name);
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if (foreignContextElements.has(name)) {
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this.foreignContext.push(true);
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}
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else if (htmlIntegrationElements.has(name)) {
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this.foreignContext.push(false);
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}
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}
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(_b = (_a = this.cbs).onopentagname) === null || _b === void 0 ? void 0 : _b.call(_a, name);
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if (this.cbs.onopentag)
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this.attribs = {};
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};
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Parser.prototype.onopentagend = function () {
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var _a, _b;
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this.updatePosition(1);
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if (this.attribs) {
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(_b = (_a = this.cbs).onopentag) === null || _b === void 0 ? void 0 : _b.call(_a, this.tagname, this.attribs);
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this.attribs = null;
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}
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if (!this.options.xmlMode &&
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this.cbs.onclosetag &&
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voidElements.has(this.tagname)) {
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this.cbs.onclosetag(this.tagname);
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}
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this.tagname = "";
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};
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Parser.prototype.onclosetag = function (name) {
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this.updatePosition(1);
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if (this.lowerCaseTagNames) {
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name = name.toLowerCase();
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}
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if (foreignContextElements.has(name) ||
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htmlIntegrationElements.has(name)) {
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this.foreignContext.pop();
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}
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if (this.stack.length &&
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(this.options.xmlMode || !voidElements.has(name))) {
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var pos = this.stack.lastIndexOf(name);
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if (pos !== -1) {
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if (this.cbs.onclosetag) {
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pos = this.stack.length - pos;
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while (pos--) {
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// We know the stack has sufficient elements.
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this.cbs.onclosetag(this.stack.pop());
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}
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}
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else
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this.stack.length = pos;
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}
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else if (name === "p" && !this.options.xmlMode) {
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this.onopentagname(name);
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this.closeCurrentTag();
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}
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}
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else if (!this.options.xmlMode && (name === "br" || name === "p")) {
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this.onopentagname(name);
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this.closeCurrentTag();
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}
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};
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Parser.prototype.onselfclosingtag = function () {
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if (this.options.xmlMode ||
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this.options.recognizeSelfClosing ||
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this.foreignContext[this.foreignContext.length - 1]) {
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this.closeCurrentTag();
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}
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else {
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this.onopentagend();
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}
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};
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Parser.prototype.closeCurrentTag = function () {
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var _a, _b;
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var name = this.tagname;
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this.onopentagend();
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/*
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* Self-closing tags will be on the top of the stack
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* (cheaper check than in onclosetag)
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*/
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if (this.stack[this.stack.length - 1] === name) {
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(_b = (_a = this.cbs).onclosetag) === null || _b === void 0 ? void 0 : _b.call(_a, name);
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this.stack.pop();
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}
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};
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Parser.prototype.onattribname = function (name) {
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if (this.lowerCaseAttributeNames) {
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name = name.toLowerCase();
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}
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this.attribname = name;
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};
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Parser.prototype.onattribdata = function (value) {
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this.attribvalue += value;
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};
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Parser.prototype.onattribend = function (quote) {
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var _a, _b;
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(_b = (_a = this.cbs).onattribute) === null || _b === void 0 ? void 0 : _b.call(_a, this.attribname, this.attribvalue, quote);
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if (this.attribs &&
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!Object.prototype.hasOwnProperty.call(this.attribs, this.attribname)) {
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this.attribs[this.attribname] = this.attribvalue;
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}
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this.attribname = "";
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this.attribvalue = "";
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};
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Parser.prototype.getInstructionName = function (value) {
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var idx = value.search(reNameEnd);
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var name = idx < 0 ? value : value.substr(0, idx);
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if (this.lowerCaseTagNames) {
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name = name.toLowerCase();
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}
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return name;
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};
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Parser.prototype.ondeclaration = function (value) {
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if (this.cbs.onprocessinginstruction) {
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var name_1 = this.getInstructionName(value);
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this.cbs.onprocessinginstruction("!" + name_1, "!" + value);
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}
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};
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Parser.prototype.onprocessinginstruction = function (value) {
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if (this.cbs.onprocessinginstruction) {
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var name_2 = this.getInstructionName(value);
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this.cbs.onprocessinginstruction("?" + name_2, "?" + value);
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}
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};
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Parser.prototype.oncomment = function (value) {
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var _a, _b, _c, _d;
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this.updatePosition(4);
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(_b = (_a = this.cbs).oncomment) === null || _b === void 0 ? void 0 : _b.call(_a, value);
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(_d = (_c = this.cbs).oncommentend) === null || _d === void 0 ? void 0 : _d.call(_c);
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};
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Parser.prototype.oncdata = function (value) {
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var _a, _b, _c, _d, _e, _f;
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this.updatePosition(1);
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if (this.options.xmlMode || this.options.recognizeCDATA) {
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(_b = (_a = this.cbs).oncdatastart) === null || _b === void 0 ? void 0 : _b.call(_a);
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(_d = (_c = this.cbs).ontext) === null || _d === void 0 ? void 0 : _d.call(_c, value);
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(_f = (_e = this.cbs).oncdataend) === null || _f === void 0 ? void 0 : _f.call(_e);
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}
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else {
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this.oncomment("[CDATA[" + value + "]]");
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}
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};
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Parser.prototype.onerror = function (err) {
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var _a, _b;
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(_b = (_a = this.cbs).onerror) === null || _b === void 0 ? void 0 : _b.call(_a, err);
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};
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Parser.prototype.onend = function () {
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var _a, _b;
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if (this.cbs.onclosetag) {
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for (var i = this.stack.length; i > 0; this.cbs.onclosetag(this.stack[--i]))
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;
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}
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(_b = (_a = this.cbs).onend) === null || _b === void 0 ? void 0 : _b.call(_a);
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};
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/**
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* Resets the parser to a blank state, ready to parse a new HTML document
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*/
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Parser.prototype.reset = function () {
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var _a, _b, _c, _d;
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(_b = (_a = this.cbs).onreset) === null || _b === void 0 ? void 0 : _b.call(_a);
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this.tokenizer.reset();
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this.tagname = "";
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this.attribname = "";
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this.attribs = null;
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this.stack = [];
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(_d = (_c = this.cbs).onparserinit) === null || _d === void 0 ? void 0 : _d.call(_c, this);
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};
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/**
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* Resets the parser, then parses a complete document and
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* pushes it to the handler.
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*
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* @param data Document to parse.
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*/
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Parser.prototype.parseComplete = function (data) {
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this.reset();
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this.end(data);
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};
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/**
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* Parses a chunk of data and calls the corresponding callbacks.
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*
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* @param chunk Chunk to parse.
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*/
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Parser.prototype.write = function (chunk) {
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this.tokenizer.write(chunk);
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};
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/**
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* Parses the end of the buffer and clears the stack, calls onend.
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*
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* @param chunk Optional final chunk to parse.
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*/
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Parser.prototype.end = function (chunk) {
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this.tokenizer.end(chunk);
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};
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/**
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* Pauses parsing. The parser won't emit events until `resume` is called.
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*/
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Parser.prototype.pause = function () {
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this.tokenizer.pause();
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};
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/**
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* Resumes parsing after `pause` was called.
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*/
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Parser.prototype.resume = function () {
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this.tokenizer.resume();
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};
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/**
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* Alias of `write`, for backwards compatibility.
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*
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* @param chunk Chunk to parse.
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* @deprecated
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*/
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Parser.prototype.parseChunk = function (chunk) {
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this.write(chunk);
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};
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/**
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* Alias of `end`, for backwards compatibility.
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*
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* @param chunk Optional final chunk to parse.
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* @deprecated
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*/
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Parser.prototype.done = function (chunk) {
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this.end(chunk);
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};
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return Parser;
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}());
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exports.Parser = Parser;
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