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| import Tokenizer, { QuoteType } from "./Tokenizer.js"; | |
| import { fromCodePoint } from "entities/lib/decode.js"; | |
| const formTags = new Set([ | |
| "input", | |
| "option", | |
| "optgroup", | |
| "select", | |
| "button", | |
| "datalist", | |
| "textarea", | |
| ]); | |
| const pTag = new Set(["p"]); | |
| const tableSectionTags = new Set(["thead", "tbody"]); | |
| const ddtTags = new Set(["dd", "dt"]); | |
| const rtpTags = new Set(["rt", "rp"]); | |
| const openImpliesClose = new Map([ | |
| ["tr", new Set(["tr", "th", "td"])], | |
| ["th", new Set(["th"])], | |
| ["td", new Set(["thead", "th", "td"])], | |
| ["body", new Set(["head", "link", "script"])], | |
| ["li", new Set(["li"])], | |
| ["p", pTag], | |
| ["h1", pTag], | |
| ["h2", pTag], | |
| ["h3", pTag], | |
| ["h4", pTag], | |
| ["h5", pTag], | |
| ["h6", pTag], | |
| ["select", formTags], | |
| ["input", formTags], | |
| ["output", formTags], | |
| ["button", formTags], | |
| ["datalist", formTags], | |
| ["textarea", formTags], | |
| ["option", new Set(["option"])], | |
| ["optgroup", new Set(["optgroup", "option"])], | |
| ["dd", ddtTags], | |
| ["dt", ddtTags], | |
| ["address", pTag], | |
| ["article", pTag], | |
| ["aside", pTag], | |
| ["blockquote", pTag], | |
| ["details", pTag], | |
| ["div", pTag], | |
| ["dl", pTag], | |
| ["fieldset", pTag], | |
| ["figcaption", pTag], | |
| ["figure", pTag], | |
| ["footer", pTag], | |
| ["form", pTag], | |
| ["header", pTag], | |
| ["hr", pTag], | |
| ["main", pTag], | |
| ["nav", pTag], | |
| ["ol", pTag], | |
| ["pre", pTag], | |
| ["section", pTag], | |
| ["table", pTag], | |
| ["ul", pTag], | |
| ["rt", rtpTags], | |
| ["rp", rtpTags], | |
| ["tbody", tableSectionTags], | |
| ["tfoot", tableSectionTags], | |
| ]); | |
| const voidElements = new Set([ | |
| "area", | |
| "base", | |
| "basefont", | |
| "br", | |
| "col", | |
| "command", | |
| "embed", | |
| "frame", | |
| "hr", | |
| "img", | |
| "input", | |
| "isindex", | |
| "keygen", | |
| "link", | |
| "meta", | |
| "param", | |
| "source", | |
| "track", | |
| "wbr", | |
| ]); | |
| const foreignContextElements = new Set(["math", "svg"]); | |
| const htmlIntegrationElements = new Set([ | |
| "mi", | |
| "mo", | |
| "mn", | |
| "ms", | |
| "mtext", | |
| "annotation-xml", | |
| "foreignobject", | |
| "desc", | |
| "title", | |
| ]); | |
| const reNameEnd = /\s|\//; | |
| export class Parser { | |
| constructor(cbs, options = {}) { | |
| var _a, _b, _c, _d, _e; | |
| this.options = options; | |
| /** The start index of the last event. */ | |
| this.startIndex = 0; | |
| /** The end index of the last event. */ | |
| this.endIndex = 0; | |
| /** | |
| * Store the start index of the current open tag, | |
| * so we can update the start index for attributes. | |
| */ | |
| this.openTagStart = 0; | |
| this.tagname = ""; | |
| this.attribname = ""; | |
| this.attribvalue = ""; | |
| this.attribs = null; | |
| this.stack = []; | |
| this.foreignContext = []; | |
| this.buffers = []; | |
| this.bufferOffset = 0; | |
| /** The index of the last written buffer. Used when resuming after a `pause()`. */ | |
| this.writeIndex = 0; | |
| /** Indicates whether the parser has finished running / `.end` has been called. */ | |
| this.ended = false; | |
| this.cbs = cbs !== null && cbs !== void 0 ? cbs : {}; | |
| this.lowerCaseTagNames = (_a = options.lowerCaseTags) !== null && _a !== void 0 ? _a : !options.xmlMode; | |
| this.lowerCaseAttributeNames = | |
| (_b = options.lowerCaseAttributeNames) !== null && _b !== void 0 ? _b : !options.xmlMode; | |
| this.tokenizer = new ((_c = options.Tokenizer) !== null && _c !== void 0 ? _c : Tokenizer)(this.options, this); | |
| (_e = (_d = this.cbs).onparserinit) === null || _e === void 0 ? void 0 : _e.call(_d, this); | |
| } | |
| // Tokenizer event handlers | |
| /** @internal */ | |
| ontext(start, endIndex) { | |
| var _a, _b; | |
| const data = this.getSlice(start, endIndex); | |
| this.endIndex = endIndex - 1; | |
| (_b = (_a = this.cbs).ontext) === null || _b === void 0 ? void 0 : _b.call(_a, data); | |
| this.startIndex = endIndex; | |
| } | |
| /** @internal */ | |
| ontextentity(cp) { | |
| var _a, _b; | |
| /* | |
| * Entities can be emitted on the character, or directly after. | |
| * We use the section start here to get accurate indices. | |
| */ | |
| const index = this.tokenizer.getSectionStart(); | |
| this.endIndex = index - 1; | |
| (_b = (_a = this.cbs).ontext) === null || _b === void 0 ? void 0 : _b.call(_a, fromCodePoint(cp)); | |
| this.startIndex = index; | |
| } | |
| isVoidElement(name) { | |
| return !this.options.xmlMode && voidElements.has(name); | |
| } | |
| /** @internal */ | |
| onopentagname(start, endIndex) { | |
| this.endIndex = endIndex; | |
| let name = this.getSlice(start, endIndex); | |
| if (this.lowerCaseTagNames) { | |
| name = name.toLowerCase(); | |
| } | |
| this.emitOpenTag(name); | |
| } | |
| emitOpenTag(name) { | |
| var _a, _b, _c, _d; | |
| this.openTagStart = this.startIndex; | |
| this.tagname = name; | |
| const impliesClose = !this.options.xmlMode && openImpliesClose.get(name); | |
| if (impliesClose) { | |
| while (this.stack.length > 0 && | |
| impliesClose.has(this.stack[this.stack.length - 1])) { | |
| const element = this.stack.pop(); | |
| (_b = (_a = this.cbs).onclosetag) === null || _b === void 0 ? void 0 : _b.call(_a, element, true); | |
| } | |
| } | |
| if (!this.isVoidElement(name)) { | |
| this.stack.push(name); | |
| if (foreignContextElements.has(name)) { | |
| this.foreignContext.push(true); | |
| } | |
| else if (htmlIntegrationElements.has(name)) { | |
| this.foreignContext.push(false); | |
| } | |
| } | |
| (_d = (_c = this.cbs).onopentagname) === null || _d === void 0 ? void 0 : _d.call(_c, name); | |
| if (this.cbs.onopentag) | |
| this.attribs = {}; | |
| } | |
| endOpenTag(isImplied) { | |
| var _a, _b; | |
| this.startIndex = this.openTagStart; | |
| if (this.attribs) { | |
| (_b = (_a = this.cbs).onopentag) === null || _b === void 0 ? void 0 : _b.call(_a, this.tagname, this.attribs, isImplied); | |
| this.attribs = null; | |
| } | |
| if (this.cbs.onclosetag && this.isVoidElement(this.tagname)) { | |
| this.cbs.onclosetag(this.tagname, true); | |
| } | |
| this.tagname = ""; | |
| } | |
| /** @internal */ | |
| onopentagend(endIndex) { | |
| this.endIndex = endIndex; | |
| this.endOpenTag(false); | |
| // Set `startIndex` for next node | |
| this.startIndex = endIndex + 1; | |
| } | |
| /** @internal */ | |
| onclosetag(start, endIndex) { | |
| var _a, _b, _c, _d, _e, _f; | |
| this.endIndex = endIndex; | |
| let name = this.getSlice(start, endIndex); | |
| if (this.lowerCaseTagNames) { | |
| name = name.toLowerCase(); | |
| } | |
| if (foreignContextElements.has(name) || | |
| htmlIntegrationElements.has(name)) { | |
| this.foreignContext.pop(); | |
| } | |
| if (!this.isVoidElement(name)) { | |
| const pos = this.stack.lastIndexOf(name); | |
| if (pos !== -1) { | |
| if (this.cbs.onclosetag) { | |
| let count = this.stack.length - pos; | |
| while (count--) { | |
| // We know the stack has sufficient elements. | |
| this.cbs.onclosetag(this.stack.pop(), count !== 0); | |
| } | |
| } | |
| else | |
| this.stack.length = pos; | |
| } | |
| else if (!this.options.xmlMode && name === "p") { | |
| // Implicit open before close | |
| this.emitOpenTag("p"); | |
| this.closeCurrentTag(true); | |
| } | |
| } | |
| else if (!this.options.xmlMode && name === "br") { | |
| // We can't use `emitOpenTag` for implicit open, as `br` would be implicitly closed. | |
| (_b = (_a = this.cbs).onopentagname) === null || _b === void 0 ? void 0 : _b.call(_a, "br"); | |
| (_d = (_c = this.cbs).onopentag) === null || _d === void 0 ? void 0 : _d.call(_c, "br", {}, true); | |
| (_f = (_e = this.cbs).onclosetag) === null || _f === void 0 ? void 0 : _f.call(_e, "br", false); | |
| } | |
| // Set `startIndex` for next node | |
| this.startIndex = endIndex + 1; | |
| } | |
| /** @internal */ | |
| onselfclosingtag(endIndex) { | |
| this.endIndex = endIndex; | |
| if (this.options.xmlMode || | |
| this.options.recognizeSelfClosing || | |
| this.foreignContext[this.foreignContext.length - 1]) { | |
| this.closeCurrentTag(false); | |
| // Set `startIndex` for next node | |
| this.startIndex = endIndex + 1; | |
| } | |
| else { | |
| // Ignore the fact that the tag is self-closing. | |
| this.onopentagend(endIndex); | |
| } | |
| } | |
| closeCurrentTag(isOpenImplied) { | |
| var _a, _b; | |
| const name = this.tagname; | |
| this.endOpenTag(isOpenImplied); | |
| // Self-closing tags will be on the top of the stack | |
| if (this.stack[this.stack.length - 1] === name) { | |
| // If the opening tag isn't implied, the closing tag has to be implied. | |
| (_b = (_a = this.cbs).onclosetag) === null || _b === void 0 ? void 0 : _b.call(_a, name, !isOpenImplied); | |
| this.stack.pop(); | |
| } | |
| } | |
| /** @internal */ | |
| onattribname(start, endIndex) { | |
| this.startIndex = start; | |
| const name = this.getSlice(start, endIndex); | |
| this.attribname = this.lowerCaseAttributeNames | |
| ? name.toLowerCase() | |
| : name; | |
| } | |
| /** @internal */ | |
| onattribdata(start, endIndex) { | |
| this.attribvalue += this.getSlice(start, endIndex); | |
| } | |
| /** @internal */ | |
| onattribentity(cp) { | |
| this.attribvalue += fromCodePoint(cp); | |
| } | |
| /** @internal */ | |
| onattribend(quote, endIndex) { | |
| var _a, _b; | |
| this.endIndex = endIndex; | |
| (_b = (_a = this.cbs).onattribute) === null || _b === void 0 ? void 0 : _b.call(_a, this.attribname, this.attribvalue, quote === QuoteType.Double | |
| ? '"' | |
| : quote === QuoteType.Single | |
| ? "'" | |
| : quote === QuoteType.NoValue | |
| ? undefined | |
| : null); | |
| if (this.attribs && | |
| !Object.prototype.hasOwnProperty.call(this.attribs, this.attribname)) { | |
| this.attribs[this.attribname] = this.attribvalue; | |
| } | |
| this.attribvalue = ""; | |
| } | |
| getInstructionName(value) { | |
| const index = value.search(reNameEnd); | |
| let name = index < 0 ? value : value.substr(0, index); | |
| if (this.lowerCaseTagNames) { | |
| name = name.toLowerCase(); | |
| } | |
| return name; | |
| } | |
| /** @internal */ | |
| ondeclaration(start, endIndex) { | |
| this.endIndex = endIndex; | |
| const value = this.getSlice(start, endIndex); | |
| if (this.cbs.onprocessinginstruction) { | |
| const name = this.getInstructionName(value); | |
| this.cbs.onprocessinginstruction(`!${name}`, `!${value}`); | |
| } | |
| // Set `startIndex` for next node | |
| this.startIndex = endIndex + 1; | |
| } | |
| /** @internal */ | |
| onprocessinginstruction(start, endIndex) { | |
| this.endIndex = endIndex; | |
| const value = this.getSlice(start, endIndex); | |
| if (this.cbs.onprocessinginstruction) { | |
| const name = this.getInstructionName(value); | |
| this.cbs.onprocessinginstruction(`?${name}`, `?${value}`); | |
| } | |
| // Set `startIndex` for next node | |
| this.startIndex = endIndex + 1; | |
| } | |
| /** @internal */ | |
| oncomment(start, endIndex, offset) { | |
| var _a, _b, _c, _d; | |
| this.endIndex = endIndex; | |
| (_b = (_a = this.cbs).oncomment) === null || _b === void 0 ? void 0 : _b.call(_a, this.getSlice(start, endIndex - offset)); | |
| (_d = (_c = this.cbs).oncommentend) === null || _d === void 0 ? void 0 : _d.call(_c); | |
| // Set `startIndex` for next node | |
| this.startIndex = endIndex + 1; | |
| } | |
| /** @internal */ | |
| oncdata(start, endIndex, offset) { | |
| var _a, _b, _c, _d, _e, _f, _g, _h, _j, _k; | |
| this.endIndex = endIndex; | |
| const value = this.getSlice(start, endIndex - offset); | |
| if (this.options.xmlMode || this.options.recognizeCDATA) { | |
| (_b = (_a = this.cbs).oncdatastart) === null || _b === void 0 ? void 0 : _b.call(_a); | |
| (_d = (_c = this.cbs).ontext) === null || _d === void 0 ? void 0 : _d.call(_c, value); | |
| (_f = (_e = this.cbs).oncdataend) === null || _f === void 0 ? void 0 : _f.call(_e); | |
| } | |
| else { | |
| (_h = (_g = this.cbs).oncomment) === null || _h === void 0 ? void 0 : _h.call(_g, `[CDATA[${value}]]`); | |
| (_k = (_j = this.cbs).oncommentend) === null || _k === void 0 ? void 0 : _k.call(_j); | |
| } | |
| // Set `startIndex` for next node | |
| this.startIndex = endIndex + 1; | |
| } | |
| /** @internal */ | |
| onend() { | |
| var _a, _b; | |
| if (this.cbs.onclosetag) { | |
| // Set the end index for all remaining tags | |
| this.endIndex = this.startIndex; | |
| for (let index = this.stack.length; index > 0; this.cbs.onclosetag(this.stack[--index], true)) | |
| ; | |
| } | |
| (_b = (_a = this.cbs).onend) === null || _b === void 0 ? void 0 : _b.call(_a); | |
| } | |
| /** | |
| * Resets the parser to a blank state, ready to parse a new HTML document | |
| */ | |
| reset() { | |
| var _a, _b, _c, _d; | |
| (_b = (_a = this.cbs).onreset) === null || _b === void 0 ? void 0 : _b.call(_a); | |
| this.tokenizer.reset(); | |
| this.tagname = ""; | |
| this.attribname = ""; | |
| this.attribs = null; | |
| this.stack.length = 0; | |
| this.startIndex = 0; | |
| this.endIndex = 0; | |
| (_d = (_c = this.cbs).onparserinit) === null || _d === void 0 ? void 0 : _d.call(_c, this); | |
| this.buffers.length = 0; | |
| this.bufferOffset = 0; | |
| this.writeIndex = 0; | |
| this.ended = false; | |
| } | |
| /** | |
| * Resets the parser, then parses a complete document and | |
| * pushes it to the handler. | |
| * | |
| * @param data Document to parse. | |
| */ | |
| parseComplete(data) { | |
| this.reset(); | |
| this.end(data); | |
| } | |
| getSlice(start, end) { | |
| while (start - this.bufferOffset >= this.buffers[0].length) { | |
| this.shiftBuffer(); | |
| } | |
| let slice = this.buffers[0].slice(start - this.bufferOffset, end - this.bufferOffset); | |
| while (end - this.bufferOffset > this.buffers[0].length) { | |
| this.shiftBuffer(); | |
| slice += this.buffers[0].slice(0, end - this.bufferOffset); | |
| } | |
| return slice; | |
| } | |
| shiftBuffer() { | |
| this.bufferOffset += this.buffers[0].length; | |
| this.writeIndex--; | |
| this.buffers.shift(); | |
| } | |
| /** | |
| * Parses a chunk of data and calls the corresponding callbacks. | |
| * | |
| * @param chunk Chunk to parse. | |
| */ | |
| write(chunk) { | |
| var _a, _b; | |
| if (this.ended) { | |
| (_b = (_a = this.cbs).onerror) === null || _b === void 0 ? void 0 : _b.call(_a, new Error(".write() after done!")); | |
| return; | |
| } | |
| this.buffers.push(chunk); | |
| if (this.tokenizer.running) { | |
| this.tokenizer.write(chunk); | |
| this.writeIndex++; | |
| } | |
| } | |
| /** | |
| * Parses the end of the buffer and clears the stack, calls onend. | |
| * | |
| * @param chunk Optional final chunk to parse. | |
| */ | |
| end(chunk) { | |
| var _a, _b; | |
| if (this.ended) { | |
| (_b = (_a = this.cbs).onerror) === null || _b === void 0 ? void 0 : _b.call(_a, new Error(".end() after done!")); | |
| return; | |
| } | |
| if (chunk) | |
| this.write(chunk); | |
| this.ended = true; | |
| this.tokenizer.end(); | |
| } | |
| /** | |
| * Pauses parsing. The parser won't emit events until `resume` is called. | |
| */ | |
| pause() { | |
| this.tokenizer.pause(); | |
| } | |
| /** | |
| * Resumes parsing after `pause` was called. | |
| */ | |
| resume() { | |
| this.tokenizer.resume(); | |
| while (this.tokenizer.running && | |
| this.writeIndex < this.buffers.length) { | |
| this.tokenizer.write(this.buffers[this.writeIndex++]); | |
| } | |
| if (this.ended) | |
| this.tokenizer.end(); | |
| } | |
| /** | |
| * Alias of `write`, for backwards compatibility. | |
| * | |
| * @param chunk Chunk to parse. | |
| * @deprecated | |
| */ | |
| parseChunk(chunk) { | |
| this.write(chunk); | |
| } | |
| /** | |
| * Alias of `end`, for backwards compatibility. | |
| * | |
| * @param chunk Optional final chunk to parse. | |
| * @deprecated | |
| */ | |
| done(chunk) { | |
| this.end(chunk); | |
| } | |
| } | |
| //# sourceMappingURL=Parser.js.map |