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236 lines
9.4 KiB
236 lines
9.4 KiB
3 years ago
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"use strict";
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
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return extendStatics(d, b);
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};
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return function (d, b) {
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if (typeof b !== "function" && b !== null)
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throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
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}) : (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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o[k2] = m[k];
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}));
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var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
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Object.defineProperty(o, "default", { enumerable: true, value: v });
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}) : function(o, v) {
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o["default"] = v;
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});
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var __importStar = (this && this.__importStar) || function (mod) {
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if (mod && mod.__esModule) return mod;
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var result = {};
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if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
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__setModuleDefault(result, mod);
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return result;
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};
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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.parseFeed = exports.FeedHandler = void 0;
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var domhandler_1 = __importDefault(require("domhandler"));
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var DomUtils = __importStar(require("domutils"));
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var Parser_1 = require("./Parser");
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var FeedItemMediaMedium;
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(function (FeedItemMediaMedium) {
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FeedItemMediaMedium[FeedItemMediaMedium["image"] = 0] = "image";
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FeedItemMediaMedium[FeedItemMediaMedium["audio"] = 1] = "audio";
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FeedItemMediaMedium[FeedItemMediaMedium["video"] = 2] = "video";
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FeedItemMediaMedium[FeedItemMediaMedium["document"] = 3] = "document";
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FeedItemMediaMedium[FeedItemMediaMedium["executable"] = 4] = "executable";
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})(FeedItemMediaMedium || (FeedItemMediaMedium = {}));
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var FeedItemMediaExpression;
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(function (FeedItemMediaExpression) {
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FeedItemMediaExpression[FeedItemMediaExpression["sample"] = 0] = "sample";
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FeedItemMediaExpression[FeedItemMediaExpression["full"] = 1] = "full";
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FeedItemMediaExpression[FeedItemMediaExpression["nonstop"] = 2] = "nonstop";
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})(FeedItemMediaExpression || (FeedItemMediaExpression = {}));
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// TODO: Consume data as it is coming in
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var FeedHandler = /** @class */ (function (_super) {
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__extends(FeedHandler, _super);
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/**
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*
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* @param callback
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* @param options
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*/
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function FeedHandler(callback, options) {
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var _this = this;
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if (typeof callback === "object") {
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callback = undefined;
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options = callback;
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}
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_this = _super.call(this, callback, options) || this;
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return _this;
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}
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FeedHandler.prototype.onend = function () {
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var _a, _b;
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var feedRoot = getOneElement(isValidFeed, this.dom);
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if (!feedRoot) {
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this.handleCallback(new Error("couldn't find root of feed"));
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return;
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}
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var feed = {};
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if (feedRoot.name === "feed") {
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var childs = feedRoot.children;
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feed.type = "atom";
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addConditionally(feed, "id", "id", childs);
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addConditionally(feed, "title", "title", childs);
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var href = getAttribute("href", getOneElement("link", childs));
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if (href) {
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feed.link = href;
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}
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addConditionally(feed, "description", "subtitle", childs);
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var updated = fetch("updated", childs);
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if (updated) {
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feed.updated = new Date(updated);
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}
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addConditionally(feed, "author", "email", childs, true);
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feed.items = getElements("entry", childs).map(function (item) {
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var entry = {};
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var children = item.children;
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addConditionally(entry, "id", "id", children);
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addConditionally(entry, "title", "title", children);
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var href = getAttribute("href", getOneElement("link", children));
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if (href) {
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entry.link = href;
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}
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var description = fetch("summary", children) || fetch("content", children);
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if (description) {
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entry.description = description;
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}
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var pubDate = fetch("updated", children);
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if (pubDate) {
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entry.pubDate = new Date(pubDate);
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}
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entry.media = getMediaElements(children);
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return entry;
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});
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}
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else {
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var childs = (_b = (_a = getOneElement("channel", feedRoot.children)) === null || _a === void 0 ? void 0 : _a.children) !== null && _b !== void 0 ? _b : [];
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feed.type = feedRoot.name.substr(0, 3);
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feed.id = "";
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addConditionally(feed, "title", "title", childs);
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addConditionally(feed, "link", "link", childs);
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addConditionally(feed, "description", "description", childs);
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var updated = fetch("lastBuildDate", childs);
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if (updated) {
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feed.updated = new Date(updated);
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}
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addConditionally(feed, "author", "managingEditor", childs, true);
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feed.items = getElements("item", feedRoot.children).map(function (item) {
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var entry = {};
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var children = item.children;
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addConditionally(entry, "id", "guid", children);
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addConditionally(entry, "title", "title", children);
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addConditionally(entry, "link", "link", children);
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addConditionally(entry, "description", "description", children);
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var pubDate = fetch("pubDate", children);
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if (pubDate)
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entry.pubDate = new Date(pubDate);
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entry.media = getMediaElements(children);
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return entry;
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});
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}
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this.feed = feed;
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this.handleCallback(null);
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};
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return FeedHandler;
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}(domhandler_1.default));
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exports.FeedHandler = FeedHandler;
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function getMediaElements(where) {
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return getElements("media:content", where).map(function (elem) {
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var media = {
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medium: elem.attribs.medium,
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isDefault: !!elem.attribs.isDefault,
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};
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if (elem.attribs.url) {
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media.url = elem.attribs.url;
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}
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if (elem.attribs.fileSize) {
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media.fileSize = parseInt(elem.attribs.fileSize, 10);
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}
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if (elem.attribs.type) {
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media.type = elem.attribs.type;
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}
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if (elem.attribs.expression) {
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media.expression = elem.attribs
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.expression;
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}
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if (elem.attribs.bitrate) {
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media.bitrate = parseInt(elem.attribs.bitrate, 10);
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}
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if (elem.attribs.framerate) {
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media.framerate = parseInt(elem.attribs.framerate, 10);
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}
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if (elem.attribs.samplingrate) {
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media.samplingrate = parseInt(elem.attribs.samplingrate, 10);
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}
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if (elem.attribs.channels) {
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media.channels = parseInt(elem.attribs.channels, 10);
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}
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if (elem.attribs.duration) {
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media.duration = parseInt(elem.attribs.duration, 10);
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}
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if (elem.attribs.height) {
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media.height = parseInt(elem.attribs.height, 10);
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}
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if (elem.attribs.width) {
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media.width = parseInt(elem.attribs.width, 10);
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}
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if (elem.attribs.lang) {
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media.lang = elem.attribs.lang;
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}
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return media;
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});
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}
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function getElements(tagName, where) {
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return DomUtils.getElementsByTagName(tagName, where, true);
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}
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function getOneElement(tagName, node) {
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return DomUtils.getElementsByTagName(tagName, node, true, 1)[0];
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}
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function fetch(tagName, where, recurse) {
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if (recurse === void 0) { recurse = false; }
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return DomUtils.getText(DomUtils.getElementsByTagName(tagName, where, recurse, 1)).trim();
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}
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function getAttribute(name, elem) {
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if (!elem) {
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return null;
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}
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var attribs = elem.attribs;
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return attribs[name];
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}
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function addConditionally(obj, prop, what, where, recurse) {
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if (recurse === void 0) { recurse = false; }
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var tmp = fetch(what, where, recurse);
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if (tmp)
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obj[prop] = tmp;
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}
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function isValidFeed(value) {
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return value === "rss" || value === "feed" || value === "rdf:RDF";
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}
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/**
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* Parse a feed.
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*
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* @param feed The feed that should be parsed, as a string.
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* @param options Optionally, options for parsing. When using this option, you should set `xmlMode` to `true`.
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*/
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function parseFeed(feed, options) {
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if (options === void 0) { options = { xmlMode: true }; }
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var handler = new FeedHandler(options);
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new Parser_1.Parser(handler, options).end(feed);
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return handler.feed;
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}
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exports.parseFeed = parseFeed;
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