Mercurial > addons > firefox-addons > feed-preview

annotate js/feed-parser.js @ 17:48cabd01ef64

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Add support for enclosures in Atom feeds
author Guido Berhoerster <guido+feed-preview@berhoerster.name>
date Wed, 12 Dec 2018 22:38:45 +0100
parents 150f07c7595f
children 15db49e77deb
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1 /*
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2 * Copyright (C) 2018 Guido Berhoerster <guido+feed-preview@berhoerster.name>
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3 *
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4 * This Source Code Form is subject to the terms of the Mozilla Public
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5 * License, v. 2.0. If a copy of the MPL was not distributed with this
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6 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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7 */
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8
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9 'use strict';
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10
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11 export const XMLNS = {
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12 ATOM03: 'http://purl.org/atom/ns#',
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13 ATOM10: 'http://www.w3.org/2005/Atom',
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14 RSS09: 'http://my.netscape.com/rdf/simple/0.9/',
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15 XHTML: 'http://www.w3.org/1999/xhtml',
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16 PARSERERROR: 'http://www.mozilla.org/newlayout/xml/parsererror.xml'
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17 }
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18 const ALLOWED_LINK_PROTOCOLS = new Set(['http:', 'https:', 'ftp:']);
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19
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20 function encodeXML(str) {
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21 return str.replace(/[<>&'"]/g, c => {
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22 switch (c) {
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23 case '<': return '&lt;';
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24 case '>': return '&gt;';
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25 case '&': return '&amp;';
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26 case '\'': return '&apos;';
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27 case '"': return '&quot;';
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28 }
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29 });
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30 }
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31
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32 function parseDate(s) {
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33 let date = new Date(s);
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34
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35 return isNaN(date) ? new Date(0) : date;
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36 }
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37
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38 function parseURL(text, baseURL = '') {
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39 let url;
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40
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41 try {
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42 url = new URL(text, baseURL);
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43 } catch (e) {
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44 return null;
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45 }
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46 if (!ALLOWED_LINK_PROTOCOLS.has(url.protocol)) {
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47 return null;
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48 }
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49
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50 return url;
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51 }
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52
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53 function base64Decode(base64Str) {
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54 let encodedText;
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55 try {
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56 encodedText = atob(base64Str);
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57 } catch (e) {
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58 throw (e instanceof DOMException) ? new TypeError(e.message) : e;
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59 }
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60 let byteBuffer = new Uint8Array(new ArrayBuffer(encodedText.length));
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61 for (let i = 0; i < encodedText.length; i++) {
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62 byteBuffer[i] = encodedText.charCodeAt(i);
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63 }
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64 return new TextDecoder().decode(byteBuffer);
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65 }
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66
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67 function feedNSResolver(prefix) {
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68 switch (prefix) {
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69 case 'atom03':
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70 return XMLNS.ATOM03;
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71 case 'atom':
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72 return XMLNS.ATOM10;
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73 case 'rss':
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74 return XMLNS.RSS09;
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75 }
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76 return null;
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77 }
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78
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79 function feedQueryXPath(feedDocument, scopeElement, xpathQuery) {
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80 return feedDocument.evaluate(xpathQuery, scopeElement, feedNSResolver,
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81 XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
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82 }
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83
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84 function feedQueryXPathAll(feedDocument, scopeElement, xpathQuery) {
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85 let result = feedDocument.evaluate(xpathQuery, scopeElement, feedNSResolver,
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86 XPathResult.ORDERED_NODE_ITERATOR_TYPE, null);
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87 let nodes = [];
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88 for (let node = result.iterateNext(); node !== null;
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89 node = result.iterateNext()) {
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90 nodes.push(node);
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91 }
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92
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93 return nodes;
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94 }
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95
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96 export class ParserError extends Error {
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97 constructor() {
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98 super(...arguments);
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99 this.name = this.constructor.name;
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100 }
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101 }
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102
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103 export class UnsupportedFeedTypeError extends Error {
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104 constructor(message = 'Document is not a supported feed', ...params) {
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105 super(message, ...params);
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106 this.name = this.constructor.name;
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107 }
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108 }
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109
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110 export class ProtocolError extends Error {
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111 constructor(url, status, statusText, ...params) {
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112 let message = `Protocol error: Transfer of ${url} failed with: ` +
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113 `${status} ${statusText}`
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114 super(message, ...params);
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115 this.name = this.constructor.name;
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116 this.url = url;
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117 this.status = status;
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118 this.statusText = statusText;
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119 }
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120 }
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121
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122 class FeedLogo {
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123 constructor(url, {title = ''} = {}) {
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124 this.url = url;
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125 this.title = title;
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126 }
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127 }
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128
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129 class FeedEntryFile {
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130 constructor(url, {type = browser.i18n.getMessage('defaultFileType'),
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131 size = 0} = {}) {
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132 this.filename = undefined;
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133 this._url = undefined;
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134 this.url = url;
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135 this.type = type;
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136 this.size = size;
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137 }
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138
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139 set url(url) {
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140 this._url = url;
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141 let filename = url.pathname.split('/').pop();
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142 this.filename = filename !== '' ? filename :
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143 browser.i18n.getMessage('defaultFileName');
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144 }
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145
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146 get url() {
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147 return this._url;
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148 }
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149 }
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150
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151 class FeedEntry {
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152 constructor({title = browser.i18n.getMessage('defaultFeedEntryTitle'),
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153 link = undefined, date = new Date(0), content = '',
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154 files = []} = {}) {
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155 this.title = title;
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156 this.link = link;
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157 this.date = date;
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158 this._content = undefined;
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159 this.content = content;
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160 this.files = files;
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161 }
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162
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163 normalizeContent(text) {
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164 if (typeof text === 'undefined') {
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165 return
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166 }
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167
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168 let contentDocument = document.implementation.createHTMLDocument();
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169 let parsedDocument = new DOMParser().parseFromString(text, 'text/html');
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170 contentDocument.body = contentDocument.adoptNode(parsedDocument.body);
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171 return new XMLSerializer().serializeToString(contentDocument);
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172 }
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173
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174 set content(content) {
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175 this._content = this.normalizeContent(content);
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176 }
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177
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178 get content() {
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179 return this._content;
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180 }
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181 }
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182
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183 class Feed {
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184 constructor(url, {title = browser.i18n.getMessage('defaultFeedTitle'),
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185 subtitle = '', logo, entries = []} = {}) {
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186 this.url = url;
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187 this.title = title;
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188 this.subtitle = subtitle;
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189 this.logo = logo;
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190 this.entries = entries;
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191 }
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192 }
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193
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194 export class FeedParser {
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195 static probeFeed(feedDocument) {
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196 let documentElement = feedDocument.documentElement;
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197 if (documentElement.nodeName === 'feed' &&
15
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198 documentElement.namespaceURI === XMLNS.ATOM03) {
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199 return ['atom', '0.3'];
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200 } else if (documentElement.nodeName === 'feed' &&
6
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201 documentElement.namespaceURI === XMLNS.ATOM10) {
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202 return ['atom', '1.0'];
6
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203 } else if (documentElement.nodeName === 'rss') {
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204 let version = documentElement.getAttribute('version');
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205 switch (version) {
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206 case '0.90':
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207 case '0.91':
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208 case '0.92':
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209 case '0.93':
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210 case '0.94':
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211 case '2.0':
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212 return ['rss', version];
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213 }
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214 } else if (documentElement.localName.toLowerCase() === 'rdf' &&
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215 documentElement.getAttribute('xmlns') === XMLNS.RSS09) {
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216 return ['rss', '0.9'];
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217 }
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218
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219 return [undefined, undefined];
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220 }
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221
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222 constructor() {
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223 this.url = undefined;
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224 this.document = undefined;
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225 }
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226
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227 parseAtom03ContentConstruct(containerElement, textOnly = true) {
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228 let contentType = containerElement.getAttribute('type');
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229 let contentMode = containerElement.getAttribute('mode');
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230 if (contentType === null) {
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231 contentType = 'text/plain';
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232 }
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233 if (contentMode === null) {
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234 contentMode = 'xml';
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Guido Berhoerster <guido+feed-preview@berhoerster.name>
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235 }
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236 if (contentType === 'application/xhtml+xml') {
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diff changeset
237 let htmlText;
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238 if (contentMode === 'xml') {
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239 return textOnly ? containerElement.textContent.trim() :
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240 containerElement.innerHTML;
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241 } else if (contentMode === 'escaped') {
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242 htmlText = containerElement.textContent;
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243 } else if (contentMode === 'base64') {
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244 htmlText = base64Decode(containerElement.textContent);
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245 }
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246 if (typeof htmlText === 'undefined') {
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247 return;
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248 }
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249 if (textOnly) {
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diff changeset
250 let htmlDocument = new DOMParser().parseFromString(htmlText,
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251 'application/xhtml+xml');
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diff changeset
252 if (htmlDocument.documentElement.namespaceURI ===
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diff changeset
253 XMLNS.PARSERERROR) {
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diff changeset
254 return;
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255 }
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256 return htmlDocument.body.textContent.trim();
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257 }
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258 return htmlText;
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259 } else if (contentType === 'text/html') {
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diff changeset
260 let htmlText;
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parents: 14
diff changeset
261 if (contentMode === 'escaped') {
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diff changeset
262 htmlText = containerElement.textContent;
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diff changeset
263 } else if (contentMode === 'base64') {
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264 htmlText = base64Decode(containerElement.textContent);
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parents: 14
diff changeset
265 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
266 if (typeof htmlText === 'undefined') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
267 return;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
268 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
269 if (textOnly) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
270 let htmlDocument = new DOMParser().parseFromString(htmlText,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
271 'text/html');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
272 return htmlDocument.body.textContent.trim();
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
273 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
274 return htmlText;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
275 } else if (contentType === 'text/plain') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
276 let text;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
277 if (contentMode === 'escaped') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
278 text = containerElement.textContent;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
279 } else if (contentMode === 'base64') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
280 text = base64Decode(containerElement.textContent);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
281 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
282 if (typeof text === 'undefined') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
283 return;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
284 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
285 return textOnly ? text : `<pre>${encodeXML(text)}</pre>`;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
286 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
287 return;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
288 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
289
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
290 parseAtom03Content(contentElement) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
291 // ordered from lowest to highest preference
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
292 const contentTypes = [
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
293 'text/plain',
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
294 'text/html',
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
295 'application/xhtml+xml'
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
296 ];
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
297 if (contentElement.getAttribute('type') === 'multipart/alternative' &&
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
298 contentElement.getAttribute('mode') === null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
299 // select alternative according to above preference
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
300 let selectedTypeIndex = -1;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
301 let selectedElement;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
302 for (let innerContentElement of contentElement.children) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
303 if (innerContentElement.localName !== 'content' ||
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
304 innerContentElement.namespaceURI !== XMLNS.ATOM03) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
305 throw new TypeError('child elements of a multipart ' +
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
306 ' content elements must be content elements');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
307 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
308 let innerContentType = innerContentElement.getAttribute('type');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
309 if (innerContentType === null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
310 innerContentType = 'text/plain';
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
311 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
312 let typeIndex = contentTypes.indexOf(innerContentType);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
313 if (typeIndex > selectedTypeIndex) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
314 selectedTypeIndex = typeIndex;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
315 selectedElement = innerContentElement;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
316 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
317 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
318 if (selectedTypeIndex >= 0) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
319 contentElement = selectedElement;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
320 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
321 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
322
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
323 return this.parseAtom03ContentConstruct(contentElement, false);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
324 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
325
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
326 parseAtom03Entry(entryElement) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
327 let title;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
328 let link;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
329 let date;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
330 let content;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
331 let titleElement = feedQueryXPath(this.document, entryElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
332 './atom03:title');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
333 if (titleElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
334 title = titleElement.textContent.trim();
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
335 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
336
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
337 let linkElement = feedQueryXPath(this.document, entryElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
338 './atom03:link[@href][@rel="alternate"]');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
339 if (linkElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
340 link = parseURL(linkElement.getAttribute('href'), this.url);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
341 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
342
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
343 let modifiedElement = feedQueryXPath(this.document, entryElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
344 './atom03:modified');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
345 if (modifiedElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
346 date = parseDate(modifiedElement.textContent);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
347 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
348
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
349 let contentElement = feedQueryXPath(this.document, entryElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
350 './atom03:content');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
351 if (contentElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
352 try {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
353 content = this.parseAtom03Content(contentElement);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
354 } catch (e) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
355 if (!(e instanceof TypeError)) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
356 throw e;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
357 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
358 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
359 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
360 if (typeof content === 'undefined') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
361 let summaryElement = feedQueryXPath(this.document, entryElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
362 './atom03:summary');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
363 if (summaryElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
364 try {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
365 content = this.parseAtom03ContentConstruct(summaryElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
366 false);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
367 } catch (e) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
368 if (!(e instanceof TypeError)) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
369 throw e;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
370 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
371 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
372 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
373 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
374
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
375 return new FeedEntry({title, link, date, content});
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
376 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
377
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
378 parseAtom03Feed() {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
379 let title;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
380 let subtitle;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
381 let logo;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
382 let entries = [];
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
383 let documentElement = this.document.documentElement;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
384
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
385 let titleElement = feedQueryXPath(this.document, documentElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
386 './atom03:title');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
387 if (titleElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
388 try {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
389 title = this.parseAtom03ContentConstruct(titleElement);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
390 } catch (e) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
391 if (!(e instanceof TypeError)) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
392 throw e;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
393 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
394 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
395 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
396
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
397 let taglineElement = feedQueryXPath(this.document, documentElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
398 './atom03:tagline');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
399 if (taglineElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
400 try {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
401 title = this.parseAtom03ContentConstruct(taglineElement);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
402 } catch (e) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
403 if (!(e instanceof TypeError)) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
404 throw e;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
405 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
406 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
407 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
408
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
409 let logoElement = feedQueryXPath(this.document, documentElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
410 './atom03:logo');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
411 if (logoElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
412 try {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
413 logo = this.parseAtomLogo(logoElement);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
414 } catch (e) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
415 if (!(e instanceof TypeError)) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
416 throw e;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
417 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
418 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
419 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
420
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
421 let entryElements = feedQueryXPathAll(this.document, documentElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
422 './atom03:entry');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
423 for (let entryElement of entryElements) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
424 entries.push(this.parseAtom03Entry(entryElement));
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
425 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
426
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
427 return new Feed(this.url, {title, subtitle, logo, entries});
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
428 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
429
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
430 parseAtomLogo(logoElement) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
431 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
432 if (url === null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
433 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
434 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
435 return new FeedLogo(url);
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
14
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
438 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
439 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
440 if (contentType === null) {
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
441 contentType = 'text';
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
442 }
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
443
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
444 if (contentType === 'xhtml') {
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
445 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
446 if (xhtmlRootElement !== null &&
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
447 xhtmlRootElement.localName === 'div' &&
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
448 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
449 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
450 xhtmlRootElement.innerHTML;
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
451 }
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
452 } 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
453 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
454 if (textOnly) {
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
455 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
456 'text/html');
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
457 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
458 }
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
459 return htmlText
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
460 } 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
461 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
462 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
463 }
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
464
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
465 // unsupported content type
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
466 return;
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
467 }
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
468
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
469 parseAtomContent(contentElement) {
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
470 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
471 if (contentSrc !== null) {
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
472 // 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
473 return;
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
474 }
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
475 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
476 }
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
477
17
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
478 parseAtomEntryFile(enclosureElement) {
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
479 let type;
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
480 let size;
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
481 let url = parseURL(enclosureElement.getAttribute('href'), this.url);
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
482 if (url === null) {
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
483 throw new TypeError('invalid URL in enclosure href attribute');
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
484 }
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
485
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
486 let typeAttribute = enclosureElement.getAttribute('type');
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
487 if (typeAttribute !== null) {
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
488 type = typeAttribute;
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
489 }
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
490
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
491 let length = parseInt(enclosureElement.getAttribute('length'), 10);
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
492 if (!isNaN(length)) {
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
493 size = length;
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
494 }
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
495
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
496 return new FeedEntryFile(url, {type, size});
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
497 }
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
498
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
499 parseAtomEntry(entryElement) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
500 let title;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
501 let link;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
502 let date;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
503 let content;
17
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
504 let files = [];
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
505 let titleElement = feedQueryXPath(this.document, entryElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
506 './atom:title');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
507 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
508 title = this.parseAtomTextConstruct(titleElement);
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
509 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
510
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
511 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
512 './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
513 if (linkElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
514 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
515 }
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 let updatedElement = feedQueryXPath(this.document, entryElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
518 './atom:updated');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
519 if (updatedElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
520 date = parseDate(updatedElement.textContent);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
521 }
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 let contentElement = feedQueryXPath(this.document, entryElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
524 './atom:content');
14
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
525 if (contentElement !== null) {
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
526 content = this.parseAtomContent(contentElement);
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
527 }
14
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
528 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
529 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
530 './atom:summary');
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
531 if (summaryElement !== null) {
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
532 content = this.parseAtomTextConstruct(summaryElement, false);
6
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
17
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
536 for (let enclosureElement of feedQueryXPathAll(this.document,
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
537 entryElement, './atom:link[@href][@rel="enclosure"]')) {
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
538 try {
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
539 let entryFile = this.parseAtomEntryFile(enclosureElement);
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
540 files.push(entryFile);
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
541 } catch (e) {
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
542 if (!(e instanceof TypeError)) {
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
543 throw e;
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
544 }
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
545 }
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
546 }
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
547
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
548 return new FeedEntry({title, link, date, content, files});
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
549 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
550
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
551 parseAtomFeed() {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
552 let title;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
553 let subtitle;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
554 let logo;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
555 let entries = [];
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
556 let documentElement = this.document.documentElement;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
557
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
558 let titleElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
559 './atom:title');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
560 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
561 title = this.parseAtomTextConstruct(titleElement);
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
562 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
563
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
564 let subtitleElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
565 './atom:subtitle');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
566 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
567 subtitle = this.parseAtomTextConstruct(subtitleElement);
6
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
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
570 let logoElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
571 './atom:logo');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
572 if (logoElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
573 try {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
574 logo = this.parseAtomLogo(logoElement);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
575 } catch (e) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
576 if (!(e instanceof TypeError)) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
577 throw e;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
578 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
579 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
580 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
581
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
582 let entryElements = feedQueryXPathAll(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
583 './atom:entry');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
584 for (let entryElement of entryElements) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
585 entries.push(this.parseAtomEntry(entryElement));
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
586 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
587
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
588 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
589 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
590
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
591 parseRSS1Logo(imageElement) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
592 let title;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
593 let urlElement = feedQueryXPath(this.document, imageElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
594 './rss:url');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
595 if (urlElement === null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
596 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
597 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
598 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
599 if (url === null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
600 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
601 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
602
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
603 let titleElement = feedQueryXPath(this.document, imageElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
604 './rss:title');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
605 if (titleElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
606 title = titleElement.textContent.trim();
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
607 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
608
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
609 return new FeedLogo(url, {title});
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
610 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
611
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
612 parseRSS1Entry(itemElement) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
613 let title;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
614 let link;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
615 let titleElement = feedQueryXPath(this.document, itemElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
616 './rss:title');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
617 if (titleElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
618 title = titleElement.textContent;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
619 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
620
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
621 let linkElement = feedQueryXPath(this.document, itemElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
622 './rss:link');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
623 if (linkElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
624 link = parseURL(linkElement.textContent, this.url);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
625 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
626
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
627 return new FeedEntry({title, link});
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
628 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
629
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
630 parseRSS1Feed() {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
631 let title;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
632 let subtitle;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
633 let logo;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
634 let entries = [];
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
635 let documentElement = this.document.documentElement;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
636 let titleElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
637 './rss:channel/rss:title');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
638 if (titleElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
639 title = titleElement.textContent;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
640 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
641
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
642 let descriptionElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
643 './channel/description');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
644 if (descriptionElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
645 subtitle = descriptionElement.textContent;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
646 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
647
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
648 let imageElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
649 './rss:image');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
650 if (imageElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
651 try {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
652 logo = this.parseRSS1Logo(imageElement);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
653 } catch (e) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
654 if (!(e instanceof TypeError)) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
655 throw e;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
656 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
657 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
658 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
659
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
660 let itemElements = feedQueryXPathAll(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
661 './rss:item');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
662 for (let itemElement of itemElements) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
663 let entry = this.parseRSS1Entry(itemElement);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
664 if (typeof entry !== 'undefined') {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
665 entries.push(entry);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
666 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
667 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
668
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
669 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
670 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
671
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
672 parseRSS2Logo(imageElement) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
673 let title;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
674 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
675 if (urlElement === null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
676 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
677 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
678 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
679 if (url === null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
680 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
681 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
682
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
683 let titleElement = feedQueryXPath(this.document, imageElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
684 './title');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
685 if (titleElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
686 title = titleElement.textContent.trim();
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
687 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
688
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
689 return new FeedLogo(url, {title});
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
690 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
691
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
692 parseRSS2EntryFile(enclosureElement) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
693 let type;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
694 let size;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
695 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
696 if (url === null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
697 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
698 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
699
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
700 let typeAttribute = enclosureElement.getAttribute('type');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
701 if (typeAttribute !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
702 type = typeAttribute;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
703 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
704
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
705 let length = parseInt(enclosureElement.getAttribute('length'),
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
706 10);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
707 if (!isNaN(length)) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
708 size = length;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
709 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
710
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
711 return new FeedEntryFile(url, {type, size});
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
712 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
713
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
714 parseRSS2Entry(itemElement) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
715 let title;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
716 let link;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
717 let date;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
718 let content;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
719 let files = [];
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
720 let titleElement = feedQueryXPath(this.document, itemElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
721 './title');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
722 if (titleElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
723 title = titleElement.textContent;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
724 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
725
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
726 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
727 if (linkElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
728 link = parseURL(linkElement.textContent, this.url);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
729 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
730
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
731 let pubDateElement = feedQueryXPath(this.document, itemElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
732 './pubDate');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
733 if (pubDateElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
734 date = parseDate(pubDateElement.textContent);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
735 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
736
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
737 let descriptionElement = feedQueryXPath(this.document, itemElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
738 './description');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
739 if (descriptionElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
740 content = descriptionElement.textContent.trim();
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
741 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
742
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
743 for (let enclosureElement of
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
744 feedQueryXPathAll(this.document, itemElement, './enclosure')) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
745 try {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
746 let entryFile = this.parseRSS2EntryFile(enclosureElement);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
747 files.push(entryFile);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
748 } catch (e) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
749 if (!(e instanceof TypeError)) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
750 throw e;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
751 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
752 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
753 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
754
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
755 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
756 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
757
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
758 parseRSS2Feed() {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
759 let title;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
760 let subtitle;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
761 let logo;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
762 let entries = [];
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
763 let documentElement = this.document.documentElement;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
764 let titleElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
765 './channel/title');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
766 if (titleElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
767 title = titleElement.textContent;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
768 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
769
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
770 let descriptionElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
771 './channel/description');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
772 if (descriptionElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
773 subtitle = descriptionElement.textContent;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
774 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
775
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
776 let imageElement = feedQueryXPath(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
777 './channel/image');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
778 if (imageElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
779 try {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
780 logo = this.parseRSS2Logo(imageElement);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
781 } catch (e) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
782 if (!(e instanceof TypeError)) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
783 throw e;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
784 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
785 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
786 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
787
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
788 let itemElements = feedQueryXPathAll(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
789 './channel/item');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
790 for (let itemElement of itemElements) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
791 let entry = this.parseRSS2Entry(itemElement);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
792 if (typeof entry !== 'undefined') {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
793 entries.push(entry);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
794 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
795 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
796
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
797 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
798 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
799
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
800 parseFromString(xmlString, url) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
801 this.url = url;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
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802 this.document = new DOMParser().parseFromString(xmlString,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
803 'application/xml');
15
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
804 if (this.document.documentElement.namespaceURI === XMLNS.PARSERERROR) {
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
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805 throw new ParserError(this.document.documentElement.textContent);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
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806 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
807
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
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808 let [type, version] = this.constructor.probeFeed(this.document);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
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809 if (type === 'atom') {
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150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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810 if (version === '0.3') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
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811 return this.parseAtom03Feed();
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
812 } else if (version === '1.0') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
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813 return this.parseAtomFeed();
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
814 }
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
815 } else if (type === 'rss') {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
816 if (version === '0.9') {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
817 return this.parseRSS1Feed();
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
818 } else {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
819 return this.parseRSS2Feed();
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
820 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
821 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
822 throw new UnsupportedFeedTypeError();
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
823 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
824 }