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424 lines
14 KiB
424 lines
14 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 tableSectionTags = new Set(["thead", "tbody"]); |
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var ddtTags = new Set(["dd", "dt"]); |
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var rtpTags = new Set(["rt", "rp"]); |
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var openImpliesClose = new Map([ |
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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", ddtTags], |
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["dt", ddtTags], |
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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", rtpTags], |
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["rp", rtpTags], |
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["tbody", tableSectionTags], |
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["tfoot", tableSectionTags], |
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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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this.options = options; |
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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 = 0; |
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/** |
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* Store the start index of the current open tag, |
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* so we can update the start index for attributes. |
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*/ |
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this.openTagStart = 0; |
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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.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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// Tokenizer event handlers |
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/** @internal */ |
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Parser.prototype.ontext = function (data) { |
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var _a, _b; |
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var idx = this.tokenizer.getAbsoluteIndex(); |
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this.endIndex = idx - 1; |
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(_b = (_a = this.cbs).ontext) === null || _b === void 0 ? void 0 : _b.call(_a, data); |
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this.startIndex = idx; |
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}; |
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Parser.prototype.isVoidElement = function (name) { |
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return !this.options.xmlMode && voidElements.has(name); |
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}; |
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/** @internal */ |
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Parser.prototype.onopentagname = function (name) { |
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this.endIndex = this.tokenizer.getAbsoluteIndex(); |
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if (this.lowerCaseTagNames) { |
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name = name.toLowerCase(); |
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} |
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this.emitOpenTag(name); |
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}; |
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Parser.prototype.emitOpenTag = function (name) { |
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var _a, _b, _c, _d; |
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this.openTagStart = this.startIndex; |
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this.tagname = name; |
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var impliesClose = !this.options.xmlMode && openImpliesClose.get(name); |
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if (impliesClose) { |
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while (this.stack.length > 0 && |
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impliesClose.has(this.stack[this.stack.length - 1])) { |
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var el = this.stack.pop(); |
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(_b = (_a = this.cbs).onclosetag) === null || _b === void 0 ? void 0 : _b.call(_a, el, true); |
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} |
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} |
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if (!this.isVoidElement(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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(_d = (_c = this.cbs).onopentagname) === null || _d === void 0 ? void 0 : _d.call(_c, 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.endOpenTag = function (isImplied) { |
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var _a, _b; |
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this.startIndex = this.openTagStart; |
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this.endIndex = this.tokenizer.getAbsoluteIndex(); |
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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, isImplied); |
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this.attribs = null; |
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} |
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if (this.cbs.onclosetag && this.isVoidElement(this.tagname)) { |
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this.cbs.onclosetag(this.tagname, true); |
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} |
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this.tagname = ""; |
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}; |
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/** @internal */ |
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Parser.prototype.onopentagend = function () { |
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this.endOpenTag(false); |
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// Set `startIndex` for next node |
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this.startIndex = this.endIndex + 1; |
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}; |
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/** @internal */ |
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Parser.prototype.onclosetag = function (name) { |
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var _a, _b, _c, _d, _e, _f; |
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this.endIndex = this.tokenizer.getAbsoluteIndex(); |
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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.isVoidElement(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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var count = this.stack.length - pos; |
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while (count--) { |
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// We know the stack has sufficient elements. |
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this.cbs.onclosetag(this.stack.pop(), count !== 0); |
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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 (!this.options.xmlMode && name === "p") { |
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this.emitOpenTag(name); |
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this.closeCurrentTag(true); |
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} |
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} |
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else if (!this.options.xmlMode && name === "br") { |
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// We can't go through `emitOpenTag` here, as `br` would be implicitly closed. |
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(_b = (_a = this.cbs).onopentagname) === null || _b === void 0 ? void 0 : _b.call(_a, name); |
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(_d = (_c = this.cbs).onopentag) === null || _d === void 0 ? void 0 : _d.call(_c, name, {}, true); |
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(_f = (_e = this.cbs).onclosetag) === null || _f === void 0 ? void 0 : _f.call(_e, name, false); |
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} |
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// Set `startIndex` for next node |
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this.startIndex = this.endIndex + 1; |
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}; |
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/** @internal */ |
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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(false); |
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// Set `startIndex` for next node |
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this.startIndex = this.endIndex + 1; |
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} |
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else { |
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// Ignore the fact that the tag is self-closing. |
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this.onopentagend(); |
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} |
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}; |
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Parser.prototype.closeCurrentTag = function (isOpenImplied) { |
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var _a, _b; |
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var name = this.tagname; |
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this.endOpenTag(isOpenImplied); |
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// Self-closing tags will be on the top of the stack |
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if (this.stack[this.stack.length - 1] === name) { |
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// If the opening tag isn't implied, the closing tag has to be implied. |
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(_b = (_a = this.cbs).onclosetag) === null || _b === void 0 ? void 0 : _b.call(_a, name, !isOpenImplied); |
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this.stack.pop(); |
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} |
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}; |
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/** @internal */ |
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Parser.prototype.onattribname = function (name) { |
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this.startIndex = this.tokenizer.getAbsoluteSectionStart(); |
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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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/** @internal */ |
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Parser.prototype.onattribdata = function (value) { |
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this.attribvalue += value; |
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}; |
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/** @internal */ |
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Parser.prototype.onattribend = function (quote) { |
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var _a, _b; |
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this.endIndex = this.tokenizer.getAbsoluteIndex(); |
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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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/** @internal */ |
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Parser.prototype.ondeclaration = function (value) { |
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this.endIndex = this.tokenizer.getAbsoluteIndex(); |
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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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// Set `startIndex` for next node |
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this.startIndex = this.endIndex + 1; |
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}; |
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/** @internal */ |
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Parser.prototype.onprocessinginstruction = function (value) { |
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this.endIndex = this.tokenizer.getAbsoluteIndex(); |
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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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// Set `startIndex` for next node |
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this.startIndex = this.endIndex + 1; |
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}; |
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/** @internal */ |
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Parser.prototype.oncomment = function (value) { |
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var _a, _b, _c, _d; |
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this.endIndex = this.tokenizer.getAbsoluteIndex(); |
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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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// Set `startIndex` for next node |
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this.startIndex = this.endIndex + 1; |
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}; |
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/** @internal */ |
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Parser.prototype.oncdata = function (value) { |
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var _a, _b, _c, _d, _e, _f, _g, _h, _j, _k; |
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this.endIndex = this.tokenizer.getAbsoluteIndex(); |
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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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(_h = (_g = this.cbs).oncomment) === null || _h === void 0 ? void 0 : _h.call(_g, "[CDATA[" + value + "]]"); |
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(_k = (_j = this.cbs).oncommentend) === null || _k === void 0 ? void 0 : _k.call(_j); |
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} |
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// Set `startIndex` for next node |
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this.startIndex = this.endIndex + 1; |
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}; |
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/** @internal */ |
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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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/** @internal */ |
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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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// Set the end index for all remaining tags |
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this.endIndex = this.startIndex; |
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for (var i = this.stack.length; i > 0; this.cbs.onclosetag(this.stack[--i], true)) |
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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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this.startIndex = 0; |
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this.endIndex = 0; |
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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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