source: trip-planner-front/node_modules/domutils/lib/feeds.js@ 6fe77af

Last change on this file since 6fe77af was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 6.2 KB
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1"use strict";
2Object.defineProperty(exports, "__esModule", { value: true });
3exports.getFeed = void 0;
4var stringify_1 = require("./stringify");
5var legacy_1 = require("./legacy");
6/**
7 * Get the feed object from the root of a DOM tree.
8 *
9 * @param doc - The DOM to to extract the feed from.
10 * @returns The feed.
11 */
12function getFeed(doc) {
13 var feedRoot = getOneElement(isValidFeed, doc);
14 return !feedRoot
15 ? null
16 : feedRoot.name === "feed"
17 ? getAtomFeed(feedRoot)
18 : getRssFeed(feedRoot);
19}
20exports.getFeed = getFeed;
21/**
22 * Parse an Atom feed.
23 *
24 * @param feedRoot The root of the feed.
25 * @returns The parsed feed.
26 */
27function getAtomFeed(feedRoot) {
28 var _a;
29 var childs = feedRoot.children;
30 var feed = {
31 type: "atom",
32 items: (0, legacy_1.getElementsByTagName)("entry", childs).map(function (item) {
33 var _a;
34 var children = item.children;
35 var entry = { media: getMediaElements(children) };
36 addConditionally(entry, "id", "id", children);
37 addConditionally(entry, "title", "title", children);
38 var href = (_a = getOneElement("link", children)) === null || _a === void 0 ? void 0 : _a.attribs.href;
39 if (href) {
40 entry.link = href;
41 }
42 var description = fetch("summary", children) || fetch("content", children);
43 if (description) {
44 entry.description = description;
45 }
46 var pubDate = fetch("updated", children);
47 if (pubDate) {
48 entry.pubDate = new Date(pubDate);
49 }
50 return entry;
51 }),
52 };
53 addConditionally(feed, "id", "id", childs);
54 addConditionally(feed, "title", "title", childs);
55 var href = (_a = getOneElement("link", childs)) === null || _a === void 0 ? void 0 : _a.attribs.href;
56 if (href) {
57 feed.link = href;
58 }
59 addConditionally(feed, "description", "subtitle", childs);
60 var updated = fetch("updated", childs);
61 if (updated) {
62 feed.updated = new Date(updated);
63 }
64 addConditionally(feed, "author", "email", childs, true);
65 return feed;
66}
67/**
68 * Parse a RSS feed.
69 *
70 * @param feedRoot The root of the feed.
71 * @returns The parsed feed.
72 */
73function getRssFeed(feedRoot) {
74 var _a, _b;
75 var childs = (_b = (_a = getOneElement("channel", feedRoot.children)) === null || _a === void 0 ? void 0 : _a.children) !== null && _b !== void 0 ? _b : [];
76 var feed = {
77 type: feedRoot.name.substr(0, 3),
78 id: "",
79 items: (0, legacy_1.getElementsByTagName)("item", feedRoot.children).map(function (item) {
80 var children = item.children;
81 var entry = { media: getMediaElements(children) };
82 addConditionally(entry, "id", "guid", children);
83 addConditionally(entry, "title", "title", children);
84 addConditionally(entry, "link", "link", children);
85 addConditionally(entry, "description", "description", children);
86 var pubDate = fetch("pubDate", children);
87 if (pubDate)
88 entry.pubDate = new Date(pubDate);
89 return entry;
90 }),
91 };
92 addConditionally(feed, "title", "title", childs);
93 addConditionally(feed, "link", "link", childs);
94 addConditionally(feed, "description", "description", childs);
95 var updated = fetch("lastBuildDate", childs);
96 if (updated) {
97 feed.updated = new Date(updated);
98 }
99 addConditionally(feed, "author", "managingEditor", childs, true);
100 return feed;
101}
102var MEDIA_KEYS_STRING = ["url", "type", "lang"];
103var MEDIA_KEYS_INT = [
104 "fileSize",
105 "bitrate",
106 "framerate",
107 "samplingrate",
108 "channels",
109 "duration",
110 "height",
111 "width",
112];
113/**
114 * Get all media elements of a feed item.
115 *
116 * @param where Nodes to search in.
117 * @returns Media elements.
118 */
119function getMediaElements(where) {
120 return (0, legacy_1.getElementsByTagName)("media:content", where).map(function (elem) {
121 var attribs = elem.attribs;
122 var media = {
123 medium: attribs.medium,
124 isDefault: !!attribs.isDefault,
125 };
126 for (var _i = 0, MEDIA_KEYS_STRING_1 = MEDIA_KEYS_STRING; _i < MEDIA_KEYS_STRING_1.length; _i++) {
127 var attrib = MEDIA_KEYS_STRING_1[_i];
128 if (attribs[attrib]) {
129 media[attrib] = attribs[attrib];
130 }
131 }
132 for (var _a = 0, MEDIA_KEYS_INT_1 = MEDIA_KEYS_INT; _a < MEDIA_KEYS_INT_1.length; _a++) {
133 var attrib = MEDIA_KEYS_INT_1[_a];
134 if (attribs[attrib]) {
135 media[attrib] = parseInt(attribs[attrib], 10);
136 }
137 }
138 if (attribs.expression) {
139 media.expression =
140 attribs.expression;
141 }
142 return media;
143 });
144}
145/**
146 * Get one element by tag name.
147 *
148 * @param tagName Tag name to look for
149 * @param node Node to search in
150 * @returns The element or null
151 */
152function getOneElement(tagName, node) {
153 return (0, legacy_1.getElementsByTagName)(tagName, node, true, 1)[0];
154}
155/**
156 * Get the text content of an element with a certain tag name.
157 *
158 * @param tagName Tag name to look for.
159 * @param where Node to search in.
160 * @param recurse Whether to recurse into child nodes.
161 * @returns The text content of the element.
162 */
163function fetch(tagName, where, recurse) {
164 if (recurse === void 0) { recurse = false; }
165 return (0, stringify_1.textContent)((0, legacy_1.getElementsByTagName)(tagName, where, recurse, 1)).trim();
166}
167/**
168 * Adds a property to an object if it has a value.
169 *
170 * @param obj Object to be extended
171 * @param prop Property name
172 * @param tagName Tag name that contains the conditionally added property
173 * @param where Element to search for the property
174 * @param recurse Whether to recurse into child nodes.
175 */
176function addConditionally(obj, prop, tagName, where, recurse) {
177 if (recurse === void 0) { recurse = false; }
178 var val = fetch(tagName, where, recurse);
179 if (val)
180 obj[prop] = val;
181}
182/**
183 * Checks if an element is a feed root node.
184 *
185 * @param value The name of the element to check.
186 * @returns Whether an element is a feed root node.
187 */
188function isValidFeed(value) {
189 return value === "rss" || value === "feed" || value === "rdf:RDF";
190}
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