addons/firefox-addons/feed-preview: js/feed-parser.js annotate

annotate js/feed-parser.js @ 14:376a0e415bba

Properly handle non-text content in Atom feed elements The title, subtitle, summary and content elements of Atom feeds can all have non-text content. When parsing title and subtitle elements HTML and XHTML content will be stripped of any markup in order to keep it simple. In summary and content elements markup will be preserved. Element content of any other type as well as remote content in content elements will be ignored.

author	Guido Berhoerster <guido+feed-preview@berhoerster.name>
date	Mon, 10 Dec 2018 16:38:11 +0100
parents	2bbb7617dd13
children	150f07c7595f

rev	line source
6 5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	1 /*
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	2 * Copyright (C) 2018 Guido Berhoerster <guido+feed-preview@berhoerster.name>
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	3 *
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	4 * This Source Code Form is subject to the terms of the Mozilla Public
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	5 * License, v. 2.0. If a copy of the MPL was not distributed with this
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	6 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	7 */
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	8
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	9 'use strict';
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	10
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	11 export const XMLNS = {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	12 ATOM10: 'http://www.w3.org/2005/Atom',
14 376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	13 RSS09: 'http://my.netscape.com/rdf/simple/0.9/',
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	14 XHTML: 'http://www.w3.org/1999/xhtml'
6 5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	15 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	16 const ALLOWED_LINK_PROTOCOLS = new Set(['http:', 'https:', 'ftp:']);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	17
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	18 function encodeXML(str) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	19 return str.replace(/[<>&'"]/g, c => {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	20 switch (c) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	21 case '<': return '<';
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	22 case '>': return '>';
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	23 case '&': return '&';
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	24 case '\'': return ''';
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	25 case '"': return '"';
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	26 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	27 });
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	28 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	29
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	30 function parseDate(s) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	31 let date = new Date(s);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	32
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	33 return isNaN(date) ? new Date(0) : date;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	34 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	35
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	36 function parseURL(text, baseURL = '') {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	37 let url;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	38
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	39 try {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	40 url = new URL(text, baseURL);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	41 } catch (e) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	42 return null;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	43 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	44 if (!ALLOWED_LINK_PROTOCOLS.has(url.protocol)) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	45 return null;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	46 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	47
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	48 return url;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	49 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	50
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	51 function feedNSResolver(prefix) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	52 switch (prefix) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	53 case 'atom':
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	54 return XMLNS.ATOM10;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	55 case 'rss':
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	56 return XMLNS.RSS09;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	57 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	58 return null;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	59 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	60
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	61 function feedQueryXPath(feedDocument, scopeElement, xpathQuery) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	62 return feedDocument.evaluate(xpathQuery, scopeElement, feedNSResolver,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	63 XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	64 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	65
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	66 function feedQueryXPathAll(feedDocument, scopeElement, xpathQuery) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	67 let result = feedDocument.evaluate(xpathQuery, scopeElement, feedNSResolver,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	68 XPathResult.ORDERED_NODE_ITERATOR_TYPE, null);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	69 let nodes = [];
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	70 for (let node = result.iterateNext(); node !== null;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	71 node = result.iterateNext()) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	72 nodes.push(node);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	73 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	74
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	75 return nodes;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	76 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	77
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	78 export class ParserError extends Error {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	79 constructor() {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	80 super(...arguments);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	81 this.name = this.constructor.name;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	82 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	83 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	84
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	85 export class UnsupportedFeedTypeError extends Error {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	86 constructor(message = 'Document is not a supported feed', ...params) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	87 super(message, ...params);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	88 this.name = this.constructor.name;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	89 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	90 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	91
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	92 export class ProtocolError extends Error {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	93 constructor(url, status, statusText, ...params) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	94 let message = `Protocol error: Transfer of ${url} failed with: ` +
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	95 `${status} ${statusText}`
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	96 super(message, ...params);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	97 this.name = this.constructor.name;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	98 this.url = url;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	99 this.status = status;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	100 this.statusText = statusText;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	101 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	102 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	103
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	104 class FeedLogo {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	105 constructor(url, {title = ''} = {}) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	106 this.url = url;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	107 this.title = title;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	108 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	109 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	110
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	111 class FeedEntryFile {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	112 constructor(url, {type = browser.i18n.getMessage('defaultFileType'),
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	113 size = 0} = {}) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	114 this.filename = undefined;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	115 this._url = undefined;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	116 this.url = url;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	117 this.type = type;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	118 this.size = size;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	119 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	120
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	121 set url(url) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	122 this._url = url;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	123 let filename = url.pathname.split('/').pop();
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	124 this.filename = filename !== '' ? filename :
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	125 browser.i18n.getMessage('defaultFileName');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	126 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	127
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	128 get url() {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	129 return this._url;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	130 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	131 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	132
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	133 class FeedEntry {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	134 constructor({title = browser.i18n.getMessage('defaultFeedEntryTitle'),
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	135 link = undefined, date = new Date(0), content = '',
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	136 files = []} = {}) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	137 this.title = title;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	138 this.link = link;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	139 this.date = date;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	140 this._content = undefined;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	141 this.content = content;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	142 this.files = files;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	143 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	144
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	145 normalizeContent(text) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	146 if (typeof text === 'undefined') {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	147 return
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	148 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	149
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	150 let contentDocument = document.implementation.createHTMLDocument();
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	151 let parsedDocument = new DOMParser().parseFromString(text, 'text/html');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	152 contentDocument.body = contentDocument.adoptNode(parsedDocument.body);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	153 return new XMLSerializer().serializeToString(contentDocument);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	154 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	155
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	156 set content(content) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	157 this._content = this.normalizeContent(content);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	158 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	159
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	160 get content() {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	161 return this._content;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	162 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	163 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	164
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	165 class Feed {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	166 constructor(url, {title = browser.i18n.getMessage('defaultFeedTitle'),
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	167 subtitle = '', logo, entries = []} = {}) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	168 this.url = url;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	169 this.title = title;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	170 this.subtitle = subtitle;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	171 this.logo = logo;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	172 this.entries = entries;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	173 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	174 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	175
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	176 export class FeedParser {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	177 static probeFeed(feedDocument) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	178 let documentElement = feedDocument.documentElement;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	179 if (documentElement.nodeName === 'feed' &&
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	180 documentElement.namespaceURI === XMLNS.ATOM10) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	181 let version = documentElement.getAttribute('version');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	182 if (version === null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	183 version = '1.0';
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	184 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	185 if (version === '1.0') {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	186 return ['atom', version];
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	187 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	188 } else if (documentElement.nodeName === 'rss') {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	189 let version = documentElement.getAttribute('version');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	190 switch (version) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	191 case '0.90':
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	192 case '0.91':
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	193 case '0.92':
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	194 case '0.93':
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	195 case '0.94':
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	196 case '2.0':
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	197 return ['rss', version];
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	198 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	199 } else if (documentElement.localName.toLowerCase() === 'rdf' &&
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	200 documentElement.getAttribute('xmlns') === XMLNS.RSS09) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	201 return ['rss', '0.9'];
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	202 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	203
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	204 return [undefined, undefined];
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	205 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	206
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	207 constructor() {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	208 this.url = undefined;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	209 this.document = undefined;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	210 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	211
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	212 parseAtomLogo(logoElement) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	213 let url = parseURL(logoElement.textContent.trim(), this.url);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	214 if (url === null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	215 throw new TypeError('invalid URL in <logo> element');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	216 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	217 return new FeedLogo(url);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	218 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	219
14 376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	220 parseAtomTextConstruct(containerElement, textOnly = true) {
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	221 let contentType = containerElement.getAttribute('type');
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	222 if (contentType === null) {
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	223 contentType = 'text';
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	224 }
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	225
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	226 if (contentType === 'xhtml') {
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	227 let xhtmlRootElement = containerElement.firstElementChild;
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	228 if (xhtmlRootElement !== null &&
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	229 xhtmlRootElement.localName === 'div' &&
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	230 xhtmlRootElement.namespaceURI === XMLNS.XHTML) {
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	231 return textOnly ? xhtmlRootElement.textContent.trim() :
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	232 xhtmlRootElement.innerHTML;
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	233 }
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	234 } else if (contentType === 'html') {
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	235 let htmlText = containerElement.textContent;
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	236 if (textOnly) {
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	237 let htmlDocument = new DOMParser().parseFromString(htmlText,
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	238 'text/html');
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	239 return htmlDocument.body.textContent.trim();
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	240 }
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	241 return htmlText
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	242 } else if (contentType === 'text') {
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	243 let text = containerElement.textContent.trim();
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	244 return textOnly ? text : `<pre>${encodeXML(text)}</pre>`;
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	245 }
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	246
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	247 // unsupported content type
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	248 return;
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	249 }
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	250
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	251 parseAtomContent(contentElement) {
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	252 let contentSrc = contentElement.getAttribute('src');
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	253 if (contentSrc !== null) {
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	254 // externally referenced content is not supported
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	255 return;
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	256 }
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	257 return this.parseAtomTextConstruct(contentElement, false);
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	258 }
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	259
6 5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	260 parseAtomEntry(entryElement) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	261 let title;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	262 let link;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	263 let date;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	264 let content;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	265 let titleElement = feedQueryXPath(this.document, entryElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	266 './atom:title');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	267 if (titleElement !== null) {
14 376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	268 title = this.parseAtomTextConstruct(titleElement);
6 5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	269 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	270
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	271 let linkElement = feedQueryXPath(this.document, entryElement,
7 2bbb7617dd13 Alternatively use Atom links without the rel attribute Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 6 diff changeset	272 './atom:link[@href][not(@rel) or @rel="alternate"]');
6 5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	273 if (linkElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	274 link = parseURL(linkElement.getAttribute('href'), this.url);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	275 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	276
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	277 let updatedElement = feedQueryXPath(this.document, entryElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	278 './atom:updated');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	279 if (updatedElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	280 date = parseDate(updatedElement.textContent);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	281 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	282
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	283 let contentElement = feedQueryXPath(this.document, entryElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	284 './atom:content');
14 376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	285 if (contentElement !== null) {
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	286 content = this.parseAtomContent(contentElement);
6 5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	287 }
14 376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	288 if (typeof content === 'undefined') {
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	289 let summaryElement = feedQueryXPath(this.document, entryElement,
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	290 './atom:summary');
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	291 if (summaryElement !== null) {
376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	292 content = this.parseAtomTextConstruct(summaryElement, false);
6 5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	293 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	294 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	295
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	296 return new FeedEntry({title, link, date, content});
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	297 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	298
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	299 parseAtomFeed() {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	300 let title;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	301 let subtitle;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	302 let logo;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	303 let entries = [];
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	304 let documentElement = this.document.documentElement;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	305
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	306 let titleElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	307 './atom:title');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	308 if (titleElement !== null) {
14 376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	309 title = this.parseAtomTextConstruct(titleElement);
6 5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	310 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	311
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	312 let subtitleElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	313 './atom:subtitle');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	314 if (subtitleElement !== null) {
14 376a0e415bba Properly handle non-text content in Atom feed elements Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: 7 diff changeset	315 subtitle = this.parseAtomTextConstruct(subtitleElement);
6 5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	316 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	317
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	318 let logoElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	319 './atom:logo');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	320 if (logoElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	321 try {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	322 logo = this.parseAtomLogo(logoElement);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	323 } catch (e) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	324 if (!(e instanceof TypeError)) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	325 throw e;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	326 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	327 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	328 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	329
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	330 let entryElements = feedQueryXPathAll(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	331 './atom:entry');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	332 for (let entryElement of entryElements) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	333 entries.push(this.parseAtomEntry(entryElement));
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	334 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	335
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	336 return new Feed(this.url, {title, subtitle, logo, entries});
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	337 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	338
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	339 parseRSS1Logo(imageElement) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	340 let title;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	341 let urlElement = feedQueryXPath(this.document, imageElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	342 './rss:url');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	343 if (urlElement === null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	344 throw new TypeError('missing <url> element in <logo> element');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	345 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	346 let url = parseURL(urlElement.textContent.trim(), this.url);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	347 if (url === null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	348 throw new TypeError('invalid URL in <logo> element');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	349 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	350
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	351 let titleElement = feedQueryXPath(this.document, imageElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	352 './rss:title');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	353 if (titleElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	354 title = titleElement.textContent.trim();
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	355 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	356
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	357 return new FeedLogo(url, {title});
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	358 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	359
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	360 parseRSS1Entry(itemElement) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	361 let title;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	362 let link;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	363 let titleElement = feedQueryXPath(this.document, itemElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	364 './rss:title');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	365 if (titleElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	366 title = titleElement.textContent;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	367 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	368
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	369 let linkElement = feedQueryXPath(this.document, itemElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	370 './rss:link');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	371 if (linkElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	372 link = parseURL(linkElement.textContent, this.url);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	373 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	374
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	375 return new FeedEntry({title, link});
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	376 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	377
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	378 parseRSS1Feed() {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	379 let title;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	380 let subtitle;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	381 let logo;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	382 let entries = [];
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	383 let documentElement = this.document.documentElement;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	384 let titleElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	385 './rss:channel/rss:title');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	386 if (titleElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	387 title = titleElement.textContent;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	388 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	389
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	390 let descriptionElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	391 './channel/description');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	392 if (descriptionElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	393 subtitle = descriptionElement.textContent;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	394 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	395
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	396 let imageElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	397 './rss:image');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	398 if (imageElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	399 try {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	400 logo = this.parseRSS1Logo(imageElement);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	401 } catch (e) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	402 if (!(e instanceof TypeError)) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	403 throw e;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	404 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	405 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	406 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	407
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	408 let itemElements = feedQueryXPathAll(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	409 './rss:item');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	410 for (let itemElement of itemElements) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	411 let entry = this.parseRSS1Entry(itemElement);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	412 if (typeof entry !== 'undefined') {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	413 entries.push(entry);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	414 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	415 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	416
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	417 return new Feed(this.url, {title, subtitle, logo, entries});
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	418 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	419
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	420 parseRSS2Logo(imageElement) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	421 let title;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	422 let urlElement = feedQueryXPath(this.document, imageElement, './url');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	423 if (urlElement === null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	424 throw new TypeError('missing <url> element in <logo> element');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	425 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	426 let url = parseURL(urlElement.textContent.trim(), this.url);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	427 if (url === null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	428 throw new TypeError('invalid URL in <logo> element');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	429 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	430
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	431 let titleElement = feedQueryXPath(this.document, imageElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	432 './title');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	433 if (titleElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	434 title = titleElement.textContent.trim();
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	435 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	436
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	437 return new FeedLogo(url, {title});
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	438 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	439
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	440 parseRSS2EntryFile(enclosureElement) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	441 let type;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	442 let size;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	443 let url = parseURL(enclosureElement.getAttribute('url'), this.url);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	444 if (url === null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	445 throw new TypeError('invalid URL in <enclosure> element');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	446 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	447
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	448 let typeAttribute = enclosureElement.getAttribute('type');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	449 if (typeAttribute !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	450 type = typeAttribute;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	451 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	452
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	453 let length = parseInt(enclosureElement.getAttribute('length'),
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	454 10);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	455 if (!isNaN(length)) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	456 size = length;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	457 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	458
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	459 return new FeedEntryFile(url, {type, size});
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	460 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	461
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	462 parseRSS2Entry(itemElement) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	463 let title;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	464 let link;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	465 let date;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	466 let content;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	467 let files = [];
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	468 let titleElement = feedQueryXPath(this.document, itemElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	469 './title');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	470 if (titleElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	471 title = titleElement.textContent;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	472 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	473
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	474 let linkElement = feedQueryXPath(this.document, itemElement, './link');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	475 if (linkElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	476 link = parseURL(linkElement.textContent, this.url);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	477 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	478
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	479 let pubDateElement = feedQueryXPath(this.document, itemElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	480 './pubDate');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	481 if (pubDateElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	482 date = parseDate(pubDateElement.textContent);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	483 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	484
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	485 let descriptionElement = feedQueryXPath(this.document, itemElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	486 './description');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	487 if (descriptionElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	488 content = descriptionElement.textContent.trim();
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	489 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	490
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	491 for (let enclosureElement of
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	492 feedQueryXPathAll(this.document, itemElement, './enclosure')) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	493 try {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	494 let entryFile = this.parseRSS2EntryFile(enclosureElement);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	495 files.push(entryFile);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	496 } catch (e) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	497 if (!(e instanceof TypeError)) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	498 throw e;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	499 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	500 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	501 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	502
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	503 return new FeedEntry({title, link, date, content, files});
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	504 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	505
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	506 parseRSS2Feed() {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	507 let title;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	508 let subtitle;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	509 let logo;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	510 let entries = [];
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	511 let documentElement = this.document.documentElement;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	512 let titleElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	513 './channel/title');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	514 if (titleElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	515 title = titleElement.textContent;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	516 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	517
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	518 let descriptionElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	519 './channel/description');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	520 if (descriptionElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	521 subtitle = descriptionElement.textContent;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	522 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	523
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	524 let imageElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	525 './channel/image');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	526 if (imageElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	527 try {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	528 logo = this.parseRSS2Logo(imageElement);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	529 } catch (e) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	530 if (!(e instanceof TypeError)) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	531 throw e;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	532 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	533 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	534 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	535
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	536 let itemElements = feedQueryXPathAll(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	537 './channel/item');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	538 for (let itemElement of itemElements) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	539 let entry = this.parseRSS2Entry(itemElement);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	540 if (typeof entry !== 'undefined') {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	541 entries.push(entry);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	542 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	543 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	544
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	545 return new Feed(this.url, {title, subtitle, logo, entries});
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	546 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	547
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	548 parseFromString(xmlString, url) {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	549 this.url = url;
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	550 this.document = new DOMParser().parseFromString(xmlString,
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	551 'application/xml');
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	552 if (this.document.documentElement.nodeName.toLowerCase() ===
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	553 'parsererror') {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	554 throw new ParserError(this.document.documentElement.textContent);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	555 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	556
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	557 let [type, version] = this.constructor.probeFeed(this.document);
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	558 if (type === 'atom') {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	559 return this.parseAtomFeed();
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	560 } else if (type === 'rss') {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	561 if (version === '0.9') {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	562 return this.parseRSS1Feed();
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	563 } else {
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	564 return this.parseRSS2Feed();
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	565 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	566 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	567 throw new UnsupportedFeedTypeError();
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	568 }
5d7c13e998e9 Create feed previews using a stream filter Guido Berhoerster <guido+feed-preview@berhoerster.name> parents: diff changeset	569 }