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app_vue/node_modules/domutils/lib/feeds.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getFeed = void 0;
+var stringify_1 = require("./stringify");
+var legacy_1 = require("./legacy");
+/**
+ * Get the feed object from the root of a DOM tree.
+ *
+ * @param doc - The DOM to to extract the feed from.
+ * @returns The feed.
+ */
+function getFeed(doc) {
+    var feedRoot = getOneElement(isValidFeed, doc);
+    return !feedRoot
+        ? null
+        : feedRoot.name === "feed"
+            ? getAtomFeed(feedRoot)
+            : getRssFeed(feedRoot);
+}
+exports.getFeed = getFeed;
+/**
+ * Parse an Atom feed.
+ *
+ * @param feedRoot The root of the feed.
+ * @returns The parsed feed.
+ */
+function getAtomFeed(feedRoot) {
+    var _a;
+    var childs = feedRoot.children;
+    var feed = {
+        type: "atom",
+        items: (0, legacy_1.getElementsByTagName)("entry", childs).map(function (item) {
+            var _a;
+            var children = item.children;
+            var entry = { media: getMediaElements(children) };
+            addConditionally(entry, "id", "id", children);
+            addConditionally(entry, "title", "title", children);
+            var href = (_a = getOneElement("link", children)) === null || _a === void 0 ? void 0 : _a.attribs.href;
+            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);
+            }
+            return entry;
+        }),
+    };
+    addConditionally(feed, "id", "id", childs);
+    addConditionally(feed, "title", "title", childs);
+    var href = (_a = getOneElement("link", childs)) === null || _a === void 0 ? void 0 : _a.attribs.href;
+    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);
+    return feed;
+}
+/**
+ * Parse a RSS feed.
+ *
+ * @param feedRoot The root of the feed.
+ * @returns The parsed feed.
+ */
+function getRssFeed(feedRoot) {
+    var _a, _b;
+    var childs = (_b = (_a = getOneElement("channel", feedRoot.children)) === null || _a === void 0 ? void 0 : _a.children) !== null && _b !== void 0 ? _b : [];
+    var feed = {
+        type: feedRoot.name.substr(0, 3),
+        id: "",
+        items: (0, legacy_1.getElementsByTagName)("item", feedRoot.children).map(function (item) {
+            var children = item.children;
+            var entry = { media: getMediaElements(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);
+            return entry;
+        }),
+    };
+    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);
+    return feed;
+}
+var MEDIA_KEYS_STRING = ["url", "type", "lang"];
+var MEDIA_KEYS_INT = [
+    "fileSize",
+    "bitrate",
+    "framerate",
+    "samplingrate",
+    "channels",
+    "duration",
+    "height",
+    "width",
+];
+/**
+ * Get all media elements of a feed item.
+ *
+ * @param where Nodes to search in.
+ * @returns Media elements.
+ */
+function getMediaElements(where) {
+    return (0, legacy_1.getElementsByTagName)("media:content", where).map(function (elem) {
+        var attribs = elem.attribs;
+        var media = {
+            medium: attribs.medium,
+            isDefault: !!attribs.isDefault,
+        };
+        for (var _i = 0, MEDIA_KEYS_STRING_1 = MEDIA_KEYS_STRING; _i < MEDIA_KEYS_STRING_1.length; _i++) {
+            var attrib = MEDIA_KEYS_STRING_1[_i];
+            if (attribs[attrib]) {
+                media[attrib] = attribs[attrib];
+            }
+        }
+        for (var _a = 0, MEDIA_KEYS_INT_1 = MEDIA_KEYS_INT; _a < MEDIA_KEYS_INT_1.length; _a++) {
+            var attrib = MEDIA_KEYS_INT_1[_a];
+            if (attribs[attrib]) {
+                media[attrib] = parseInt(attribs[attrib], 10);
+            }
+        }
+        if (attribs.expression) {
+            media.expression =
+                attribs.expression;
+        }
+        return media;
+    });
+}
+/**
+ * Get one element by tag name.
+ *
+ * @param tagName Tag name to look for
+ * @param node Node to search in
+ * @returns The element or null
+ */
+function getOneElement(tagName, node) {
+    return (0, legacy_1.getElementsByTagName)(tagName, node, true, 1)[0];
+}
+/**
+ * Get the text content of an element with a certain tag name.
+ *
+ * @param tagName Tag name to look for.
+ * @param where  Node to search in.
+ * @param recurse Whether to recurse into child nodes.
+ * @returns The text content of the element.
+ */
+function fetch(tagName, where, recurse) {
+    if (recurse === void 0) { recurse = false; }
+    return (0, stringify_1.textContent)((0, legacy_1.getElementsByTagName)(tagName, where, recurse, 1)).trim();
+}
+/**
+ * Adds a property to an object if it has a value.
+ *
+ * @param obj Object to be extended
+ * @param prop Property name
+ * @param tagName Tag name that contains the conditionally added property
+ * @param where Element to search for the property
+ * @param recurse Whether to recurse into child nodes.
+ */
+function addConditionally(obj, prop, tagName, where, recurse) {
+    if (recurse === void 0) { recurse = false; }
+    var val = fetch(tagName, where, recurse);
+    if (val)
+        obj[prop] = val;
+}
+/**
+ * Checks if an element is a feed root node.
+ *
+ * @param value The name of the element to check.
+ * @returns Whether an element is a feed root node.
+ */
+function isValidFeed(value) {
+    return value === "rss" || value === "feed" || value === "rdf:RDF";
+}