node_modules/htmlparser2/lib/FeedHandler.js

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