Mercurial > addons > firefox-addons > feed-preview
annotate js/feed-parser.js @ 47:b68880838990
Add support for the RSS Content module to the RSS 2.0 feed parser
author | Guido Berhoerster <guido+feed-preview@berhoerster.name> |
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date | Wed, 03 Jul 2019 16:57:17 +0200 |
parents | 76e23b361e92 |
children | d5506fdb65f0 |
rev | line source |
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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 RSS10: 'http://purl.org/rss/1.0/', |
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16 CONTENT: 'http://purl.org/rss/1.0/modules/content/', |
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17 XHTML: 'http://www.w3.org/1999/xhtml', |
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18 PARSERERROR: 'http://www.mozilla.org/newlayout/xml/parsererror.xml' |
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19 } |
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20 const ALLOWED_LINK_PROTOCOLS = new Set(['http:', 'https:', 'ftp:']); |
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21 |
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22 function encodeXML(str) { |
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23 return str.replace(/[<>&'"]/g, c => { |
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24 switch (c) { |
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25 case '<': return '<'; |
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26 case '>': return '>'; |
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27 case '&': return '&'; |
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28 case '\'': return '''; |
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29 case '"': return '"'; |
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30 } |
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31 }); |
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32 } |
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33 |
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34 function parseDate(s) { |
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35 let date = new Date(s); |
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36 |
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37 return isNaN(date) ? new Date(0) : date; |
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38 } |
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39 |
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40 function parseURL(text, baseURL = '') { |
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41 let url; |
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42 |
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43 try { |
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44 url = new URL(text, baseURL); |
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45 } catch (e) { |
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46 return null; |
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47 } |
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48 if (!ALLOWED_LINK_PROTOCOLS.has(url.protocol)) { |
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49 return null; |
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50 } |
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51 |
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52 return url; |
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53 } |
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54 |
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55 function base64Decode(base64Str) { |
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56 let encodedText; |
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57 try { |
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58 encodedText = atob(base64Str); |
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59 } catch (e) { |
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60 throw (e instanceof DOMException) ? new TypeError(e.message) : e; |
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61 } |
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62 let byteBuffer = new Uint8Array(new ArrayBuffer(encodedText.length)); |
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63 for (let i = 0; i < encodedText.length; i++) { |
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64 byteBuffer[i] = encodedText.charCodeAt(i); |
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65 } |
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66 return new TextDecoder().decode(byteBuffer); |
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67 } |
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68 |
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69 function feedNSResolver(prefix) { |
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70 switch (prefix) { |
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71 case 'atom03': |
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72 return XMLNS.ATOM03; |
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73 case 'atom': |
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74 return XMLNS.ATOM10; |
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75 case 'rss09': |
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76 return XMLNS.RSS09; |
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77 case 'rss10': |
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78 return XMLNS.RSS10; |
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79 case 'content': |
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80 return XMLNS.CONTENT; |
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81 } |
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82 return null; |
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83 } |
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84 |
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85 function feedQueryXPath(feedDocument, scopeElement, xpathQuery) { |
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86 return feedDocument.evaluate(xpathQuery, scopeElement, feedNSResolver, |
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87 XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue; |
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88 } |
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89 |
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90 function feedQueryXPathAll(feedDocument, scopeElement, xpathQuery) { |
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91 let result = feedDocument.evaluate(xpathQuery, scopeElement, feedNSResolver, |
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92 XPathResult.ORDERED_NODE_ITERATOR_TYPE, null); |
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93 let nodes = []; |
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94 for (let node = result.iterateNext(); node !== null; |
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95 node = result.iterateNext()) { |
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96 nodes.push(node); |
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97 } |
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98 |
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99 return nodes; |
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100 } |
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101 |
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102 export class ParserError extends Error { |
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103 constructor() { |
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104 super(...arguments); |
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105 this.name = this.constructor.name; |
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106 } |
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107 } |
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108 |
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109 export class UnsupportedFeedTypeError extends Error { |
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110 constructor(message = 'Document is not a supported feed', ...params) { |
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111 super(message, ...params); |
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112 this.name = this.constructor.name; |
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113 } |
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114 } |
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115 |
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116 export class ProtocolError extends Error { |
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117 constructor(url, status, statusText, ...params) { |
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118 let message = `Protocol error: Transfer of ${url} failed with: ` + |
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119 `${status} ${statusText}` |
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120 super(message, ...params); |
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121 this.name = this.constructor.name; |
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122 this.url = url; |
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123 this.status = status; |
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124 this.statusText = statusText; |
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125 } |
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126 } |
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127 |
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128 class FeedLogo { |
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129 constructor(url, {title = ''} = {}) { |
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130 this.url = url; |
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131 this.title = title; |
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132 } |
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133 } |
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134 |
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135 class FeedEntryFile { |
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136 constructor(url, {type = browser.i18n.getMessage('defaultFileType'), |
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137 size = 0} = {}) { |
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138 this.filename = undefined; |
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139 this._url = undefined; |
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140 this.url = url; |
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141 this.type = type; |
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142 this.size = size; |
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143 } |
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144 |
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145 set url(url) { |
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146 this._url = url; |
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147 let filename = url.pathname.split('/').pop(); |
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148 this.filename = filename !== '' ? filename : |
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149 browser.i18n.getMessage('defaultFileName'); |
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150 } |
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151 |
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152 get url() { |
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153 return this._url; |
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154 } |
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155 } |
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156 |
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157 class FeedEntry { |
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158 constructor({title = browser.i18n.getMessage('defaultFeedEntryTitle'), |
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159 link = undefined, date = new Date(0), content = '', |
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160 files = []} = {}) { |
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161 this.title = title; |
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162 this.link = link; |
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163 this.date = date; |
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164 this._content = undefined; |
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165 this.content = content; |
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166 this.files = files; |
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167 } |
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168 |
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169 normalizeContent(text) { |
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170 if (typeof text === 'undefined') { |
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171 return |
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172 } |
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173 |
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174 let contentDocument = document.implementation.createHTMLDocument(); |
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175 let parsedDocument = new DOMParser().parseFromString(text, 'text/html'); |
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176 contentDocument.body = contentDocument.adoptNode(parsedDocument.body); |
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177 return new XMLSerializer().serializeToString(contentDocument); |
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178 } |
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179 |
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180 set content(content) { |
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181 this._content = this.normalizeContent(content); |
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182 } |
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183 |
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184 get content() { |
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185 return this._content; |
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186 } |
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187 } |
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188 |
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189 class Feed { |
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190 constructor(url, type, {title = browser.i18n.getMessage('defaultFeedTitle'), |
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191 subtitle = '', logo, entries = []} = {}) { |
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192 this.url = url; |
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193 this.type = type; |
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194 this.title = title; |
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195 this.subtitle = subtitle; |
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196 this.logo = logo; |
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197 this.entries = entries; |
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198 } |
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199 } |
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200 |
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201 export class FeedParser { |
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202 static probeFeed(feedDocument) { |
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203 let documentElement = feedDocument.documentElement; |
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204 if (documentElement.nodeName === 'feed' && |
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205 documentElement.namespaceURI === XMLNS.ATOM03) { |
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206 return ['atom', '0.3']; |
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207 } else if (documentElement.nodeName === 'feed' && |
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208 documentElement.namespaceURI === XMLNS.ATOM10) { |
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209 return ['atom', '1.0']; |
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210 } else if (documentElement.nodeName === 'rss') { |
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211 let version = documentElement.getAttribute('version'); |
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212 switch (version) { |
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213 case '0.90': |
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214 case '0.91': |
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215 case '0.92': |
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216 case '0.93': |
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217 case '0.94': |
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218 case '2.0': |
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219 return ['rss', version]; |
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220 } |
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221 } else if (documentElement.localName.toLowerCase() === 'rdf' && |
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222 documentElement.getAttribute('xmlns') === XMLNS.RSS09) { |
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223 return ['rss', '0.9']; |
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224 } else if (documentElement.localName.toLowerCase() === 'rdf' && |
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225 documentElement.getAttribute('xmlns') === XMLNS.RSS10) { |
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226 return ['rss', '1.0']; |
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227 } |
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228 |
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229 return [undefined, undefined]; |
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230 } |
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231 |
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232 constructor() { |
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233 this.url = undefined; |
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234 this.document = undefined; |
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235 } |
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236 |
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237 parseAtom03ContentConstruct(containerElement, textOnly = true) { |
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238 let contentType = containerElement.getAttribute('type'); |
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239 let contentMode = containerElement.getAttribute('mode'); |
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240 if (contentType === null) { |
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241 contentType = 'text/plain'; |
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242 } |
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243 if (contentMode === null) { |
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244 contentMode = 'xml'; |
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245 } |
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246 if (contentType === 'application/xhtml+xml') { |
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247 let htmlText; |
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248 if (contentMode === 'xml') { |
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249 return textOnly ? containerElement.textContent.trim() : |
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250 containerElement.innerHTML; |
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251 } else if (contentMode === 'escaped') { |
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252 htmlText = containerElement.textContent; |
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253 } else if (contentMode === 'base64') { |
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254 htmlText = base64Decode(containerElement.textContent); |
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255 } |
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256 if (typeof htmlText === 'undefined') { |
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257 return; |
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258 } |
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259 if (textOnly) { |
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260 let htmlDocument = new DOMParser().parseFromString(htmlText, |
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261 'application/xhtml+xml'); |
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262 if (htmlDocument.documentElement.namespaceURI === |
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263 XMLNS.PARSERERROR) { |
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264 return; |
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265 } |
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266 return htmlDocument.body.textContent.trim(); |
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267 } |
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268 return htmlText; |
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269 } else if (contentType === 'text/html') { |
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270 let htmlText; |
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271 if (contentMode === 'escaped') { |
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272 htmlText = containerElement.textContent; |
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273 } else if (contentMode === 'base64') { |
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274 htmlText = base64Decode(containerElement.textContent); |
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275 } |
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276 if (typeof htmlText === 'undefined') { |
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277 return; |
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278 } |
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279 if (textOnly) { |
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280 let htmlDocument = new DOMParser().parseFromString(htmlText, |
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281 'text/html'); |
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282 return htmlDocument.body.textContent.trim(); |
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283 } |
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284 return htmlText; |
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285 } else if (contentType === 'text/plain') { |
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286 let text; |
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287 if (contentMode === 'escaped') { |
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288 text = containerElement.textContent; |
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289 } else if (contentMode === 'base64') { |
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290 text = base64Decode(containerElement.textContent); |
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291 } |
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292 if (typeof text === 'undefined') { |
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293 return; |
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294 } |
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295 return textOnly ? text : `<pre>${encodeXML(text)}</pre>`; |
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296 } |
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297 return; |
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298 } |
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299 |
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300 parseAtom03Content(contentElement) { |
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301 // ordered from lowest to highest preference |
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302 const contentTypes = [ |
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303 'text/plain', |
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304 'text/html', |
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305 'application/xhtml+xml' |
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306 ]; |
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307 if (contentElement.getAttribute('type') === 'multipart/alternative' && |
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308 contentElement.getAttribute('mode') === null) { |
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309 // select alternative according to above preference |
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310 let selectedTypeIndex = -1; |
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311 let selectedElement; |
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312 for (let innerContentElement of contentElement.children) { |
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313 if (innerContentElement.localName !== 'content' || |
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314 innerContentElement.namespaceURI !== XMLNS.ATOM03) { |
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315 throw new TypeError('child elements of a multipart ' + |
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316 ' content elements must be content elements'); |
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317 } |
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318 let innerContentType = innerContentElement.getAttribute('type'); |
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319 if (innerContentType === null) { |
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320 innerContentType = 'text/plain'; |
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321 } |
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322 let typeIndex = contentTypes.indexOf(innerContentType); |
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323 if (typeIndex > selectedTypeIndex) { |
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324 selectedTypeIndex = typeIndex; |
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325 selectedElement = innerContentElement; |
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326 } |
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327 } |
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328 if (selectedTypeIndex >= 0) { |
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329 contentElement = selectedElement; |
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330 } |
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331 } |
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332 |
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333 return this.parseAtom03ContentConstruct(contentElement, false); |
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334 } |
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335 |
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336 parseAtom03Entry(entryElement) { |
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337 let title; |
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338 let link; |
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339 let date; |
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340 let content; |
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341 let titleElement = feedQueryXPath(this.document, entryElement, |
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342 './atom03:title'); |
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343 if (titleElement !== null) { |
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344 title = titleElement.textContent.trim(); |
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345 } |
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346 |
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347 let linkElement = feedQueryXPath(this.document, entryElement, |
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348 './atom03:link[@href][contains(concat(" ", ' + |
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Fix XPath query syntax
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349 'normalize-space(@rel), " "), " alternate ")]'); |
15
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350 if (linkElement !== null) { |
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351 link = parseURL(linkElement.getAttribute('href'), this.url); |
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352 } |
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353 |
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354 let modifiedElement = feedQueryXPath(this.document, entryElement, |
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355 './atom03:modified'); |
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356 if (modifiedElement !== null) { |
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357 date = parseDate(modifiedElement.textContent); |
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358 } |
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359 |
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360 let contentElement = feedQueryXPath(this.document, entryElement, |
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Add support for Atom 0.3 feeds
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361 './atom03:content'); |
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362 if (contentElement !== null) { |
150f07c7595f
Add support for Atom 0.3 feeds
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363 try { |
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364 content = this.parseAtom03Content(contentElement); |
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365 } catch (e) { |
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Add support for Atom 0.3 feeds
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366 if (!(e instanceof TypeError)) { |
150f07c7595f
Add support for Atom 0.3 feeds
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367 throw e; |
150f07c7595f
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368 } |
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369 } |
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370 } |
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371 if (typeof content === 'undefined') { |
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372 let summaryElement = feedQueryXPath(this.document, entryElement, |
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373 './atom03:summary'); |
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374 if (summaryElement !== null) { |
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375 try { |
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376 content = this.parseAtom03ContentConstruct(summaryElement, |
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377 false); |
150f07c7595f
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378 } catch (e) { |
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379 if (!(e instanceof TypeError)) { |
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380 throw e; |
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381 } |
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382 } |
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383 } |
150f07c7595f
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384 } |
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385 |
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386 return new FeedEntry({title, link, date, content}); |
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387 } |
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388 |
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389 parseAtom03Feed() { |
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390 let title; |
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391 let subtitle; |
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392 let logo; |
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393 let entries = []; |
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394 let documentElement = this.document.documentElement; |
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395 |
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396 let titleElement = feedQueryXPath(this.document, documentElement, |
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397 './atom03:title'); |
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398 if (titleElement !== null) { |
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399 try { |
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400 title = this.parseAtom03ContentConstruct(titleElement); |
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401 } catch (e) { |
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402 if (!(e instanceof TypeError)) { |
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403 throw e; |
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404 } |
150f07c7595f
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405 } |
150f07c7595f
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406 } |
150f07c7595f
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407 |
150f07c7595f
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408 let taglineElement = feedQueryXPath(this.document, documentElement, |
150f07c7595f
Add support for Atom 0.3 feeds
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409 './atom03:tagline'); |
150f07c7595f
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410 if (taglineElement !== null) { |
150f07c7595f
Add support for Atom 0.3 feeds
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411 try { |
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Add support for Atom 0.3 feeds
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412 title = this.parseAtom03ContentConstruct(taglineElement); |
150f07c7595f
Add support for Atom 0.3 feeds
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413 } catch (e) { |
150f07c7595f
Add support for Atom 0.3 feeds
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414 if (!(e instanceof TypeError)) { |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
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diff
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|
415 throw e; |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
14
diff
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|
416 } |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
14
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|
417 } |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
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|
418 } |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
14
diff
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|
419 |
150f07c7595f
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parents:
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diff
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420 let logoElement = feedQueryXPath(this.document, documentElement, |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
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421 './atom03:logo'); |
150f07c7595f
Add support for Atom 0.3 feeds
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diff
changeset
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422 if (logoElement !== null) { |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
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|
423 try { |
150f07c7595f
Add support for Atom 0.3 feeds
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14
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|
424 logo = this.parseAtomLogo(logoElement); |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
14
diff
changeset
|
425 } catch (e) { |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
14
diff
changeset
|
426 if (!(e instanceof TypeError)) { |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
14
diff
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|
427 throw e; |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
14
diff
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|
428 } |
150f07c7595f
Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
14
diff
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|
429 } |
150f07c7595f
Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
14
diff
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|
430 } |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
14
diff
changeset
|
431 |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
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diff
changeset
|
432 let entryElements = feedQueryXPathAll(this.document, documentElement, |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
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diff
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433 './atom03:entry'); |
150f07c7595f
Add support for Atom 0.3 feeds
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14
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434 for (let entryElement of entryElements) { |
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Add support for Atom 0.3 feeds
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435 entries.push(this.parseAtom03Entry(entryElement)); |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
14
diff
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|
436 } |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
14
diff
changeset
|
437 |
31
76e23b361e92
Allow feed reader addons to subscribe to the currently viewed feed
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
28
diff
changeset
|
438 return new Feed(this.url, 'application/atom+xml', |
76e23b361e92
Allow feed reader addons to subscribe to the currently viewed feed
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parents:
28
diff
changeset
|
439 {title, subtitle, logo, entries}); |
15
150f07c7595f
Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
14
diff
changeset
|
440 } |
150f07c7595f
Add support for Atom 0.3 feeds
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parents:
14
diff
changeset
|
441 |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
442 parseAtomLogo(logoElement) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
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|
443 let url = parseURL(logoElement.textContent.trim(), this.url); |
5d7c13e998e9
Create feed previews using a stream filter
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parents:
diff
changeset
|
444 if (url === null) { |
5d7c13e998e9
Create feed previews using a stream filter
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parents:
diff
changeset
|
445 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
|
446 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
447 return new FeedLogo(url); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
448 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
449 |
14
376a0e415bba
Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
7
diff
changeset
|
450 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
|
451 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
|
452 if (contentType === null) { |
376a0e415bba
Properly handle non-text content in Atom feed elements
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parents:
7
diff
changeset
|
453 contentType = 'text'; |
376a0e415bba
Properly handle non-text content in Atom feed elements
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parents:
7
diff
changeset
|
454 } |
376a0e415bba
Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
7
diff
changeset
|
455 |
376a0e415bba
Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
7
diff
changeset
|
456 if (contentType === 'xhtml') { |
376a0e415bba
Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
7
diff
changeset
|
457 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
|
458 if (xhtmlRootElement !== null && |
376a0e415bba
Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
7
diff
changeset
|
459 xhtmlRootElement.localName === 'div' && |
376a0e415bba
Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
7
diff
changeset
|
460 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
|
461 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
|
462 xhtmlRootElement.innerHTML; |
376a0e415bba
Properly handle non-text content in Atom feed elements
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463 } |
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Properly handle non-text content in Atom feed elements
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464 } else if (contentType === 'html') { |
376a0e415bba
Properly handle non-text content in Atom feed elements
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465 let htmlText = containerElement.textContent; |
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Properly handle non-text content in Atom feed elements
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466 if (textOnly) { |
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Properly handle non-text content in Atom feed elements
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467 let htmlDocument = new DOMParser().parseFromString(htmlText, |
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Properly handle non-text content in Atom feed elements
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468 'text/html'); |
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Properly handle non-text content in Atom feed elements
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469 return htmlDocument.body.textContent.trim(); |
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Properly handle non-text content in Atom feed elements
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470 } |
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Properly handle non-text content in Atom feed elements
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471 return htmlText |
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Properly handle non-text content in Atom feed elements
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472 } else if (contentType === 'text') { |
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Properly handle non-text content in Atom feed elements
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473 let text = containerElement.textContent.trim(); |
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Properly handle non-text content in Atom feed elements
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7
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474 return textOnly ? text : `<pre>${encodeXML(text)}</pre>`; |
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Properly handle non-text content in Atom feed elements
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475 } |
376a0e415bba
Properly handle non-text content in Atom feed elements
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7
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changeset
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476 |
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Properly handle non-text content in Atom feed elements
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7
diff
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477 // unsupported content type |
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Properly handle non-text content in Atom feed elements
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478 return; |
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Properly handle non-text content in Atom feed elements
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479 } |
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Properly handle non-text content in Atom feed elements
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480 |
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Properly handle non-text content in Atom feed elements
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481 parseAtomContent(contentElement) { |
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482 let contentSrc = contentElement.getAttribute('src'); |
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483 if (contentSrc !== null) { |
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Properly handle non-text content in Atom feed elements
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484 // externally referenced content is not supported |
376a0e415bba
Properly handle non-text content in Atom feed elements
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485 return; |
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Properly handle non-text content in Atom feed elements
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486 } |
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Properly handle non-text content in Atom feed elements
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487 return this.parseAtomTextConstruct(contentElement, false); |
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488 } |
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Properly handle non-text content in Atom feed elements
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489 |
17
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490 parseAtomEntryFile(enclosureElement) { |
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Add support for enclosures in Atom feeds
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491 let type; |
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492 let size; |
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493 let url = parseURL(enclosureElement.getAttribute('href'), this.url); |
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Add support for enclosures in Atom feeds
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494 if (url === null) { |
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Add support for enclosures in Atom feeds
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495 throw new TypeError('invalid URL in enclosure href attribute'); |
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Add support for enclosures in Atom feeds
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496 } |
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Add support for enclosures in Atom feeds
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497 |
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498 let typeAttribute = enclosureElement.getAttribute('type'); |
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Add support for enclosures in Atom feeds
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15
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499 if (typeAttribute !== null) { |
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Add support for enclosures in Atom feeds
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500 type = typeAttribute; |
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Add support for enclosures in Atom feeds
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501 } |
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Add support for enclosures in Atom feeds
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502 |
48cabd01ef64
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503 let length = parseInt(enclosureElement.getAttribute('length'), 10); |
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Add support for enclosures in Atom feeds
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15
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504 if (!isNaN(length)) { |
48cabd01ef64
Add support for enclosures in Atom feeds
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15
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|
505 size = length; |
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Add support for enclosures in Atom feeds
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15
diff
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|
506 } |
48cabd01ef64
Add support for enclosures in Atom feeds
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15
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|
507 |
48cabd01ef64
Add support for enclosures in Atom feeds
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changeset
|
508 return new FeedEntryFile(url, {type, size}); |
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Add support for enclosures in Atom feeds
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15
diff
changeset
|
509 } |
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Add support for enclosures in Atom feeds
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15
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changeset
|
510 |
6
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Create feed previews using a stream filter
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511 parseAtomEntry(entryElement) { |
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Create feed previews using a stream filter
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diff
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|
512 let title; |
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Create feed previews using a stream filter
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513 let link; |
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Create feed previews using a stream filter
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514 let date; |
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Create feed previews using a stream filter
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515 let content; |
17
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516 let files = []; |
6
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517 let titleElement = feedQueryXPath(this.document, entryElement, |
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Create feed previews using a stream filter
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|
518 './atom:title'); |
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Create feed previews using a stream filter
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|
519 if (titleElement !== null) { |
14
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Properly handle non-text content in Atom feed elements
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7
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520 title = this.parseAtomTextConstruct(titleElement); |
6
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Create feed previews using a stream filter
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parents:
diff
changeset
|
521 } |
5d7c13e998e9
Create feed previews using a stream filter
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parents:
diff
changeset
|
522 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
523 let linkElement = feedQueryXPath(this.document, entryElement, |
28
104a1faebd43
Fix XPath query syntax
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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25
diff
changeset
|
524 './atom:link[@href][not(@rel) or contains(concat(" ", ' + |
104a1faebd43
Fix XPath query syntax
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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25
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|
525 'normalize-space(@rel), " "), " alternate ")]'); |
6
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Create feed previews using a stream filter
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parents:
diff
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|
526 if (linkElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
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parents:
diff
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|
527 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
|
528 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
529 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
530 let updatedElement = feedQueryXPath(this.document, entryElement, |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
531 './atom:updated'); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
532 if (updatedElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
533 date = parseDate(updatedElement.textContent); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
534 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
535 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
536 let contentElement = feedQueryXPath(this.document, entryElement, |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
537 './atom:content'); |
14
376a0e415bba
Properly handle non-text content in Atom feed elements
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parents:
7
diff
changeset
|
538 if (contentElement !== null) { |
376a0e415bba
Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
7
diff
changeset
|
539 content = this.parseAtomContent(contentElement); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
540 } |
14
376a0e415bba
Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
7
diff
changeset
|
541 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
|
542 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
|
543 './atom:summary'); |
376a0e415bba
Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
7
diff
changeset
|
544 if (summaryElement !== null) { |
376a0e415bba
Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
7
diff
changeset
|
545 content = this.parseAtomTextConstruct(summaryElement, false); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
546 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
547 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
548 |
17
48cabd01ef64
Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
15
diff
changeset
|
549 for (let enclosureElement of feedQueryXPathAll(this.document, |
28
104a1faebd43
Fix XPath query syntax
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
25
diff
changeset
|
550 entryElement, './atom:link[@href]' + |
104a1faebd43
Fix XPath query syntax
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
25
diff
changeset
|
551 '[contains(concat(" ", normalize-space(@rel), " "), ' + |
104a1faebd43
Fix XPath query syntax
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
25
diff
changeset
|
552 '" enclosure ")]')) { |
17
48cabd01ef64
Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
15
diff
changeset
|
553 try { |
48cabd01ef64
Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
15
diff
changeset
|
554 let entryFile = this.parseAtomEntryFile(enclosureElement); |
48cabd01ef64
Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
15
diff
changeset
|
555 files.push(entryFile); |
48cabd01ef64
Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
15
diff
changeset
|
556 } catch (e) { |
48cabd01ef64
Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
15
diff
changeset
|
557 if (!(e instanceof TypeError)) { |
48cabd01ef64
Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
15
diff
changeset
|
558 throw e; |
48cabd01ef64
Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
15
diff
changeset
|
559 } |
48cabd01ef64
Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
15
diff
changeset
|
560 } |
48cabd01ef64
Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
15
diff
changeset
|
561 } |
48cabd01ef64
Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
15
diff
changeset
|
562 |
48cabd01ef64
Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
15
diff
changeset
|
563 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
|
564 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
565 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
566 parseAtomFeed() { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
567 let title; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
568 let subtitle; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
569 let logo; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
570 let entries = []; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
571 let documentElement = this.document.documentElement; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
572 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
573 let titleElement = feedQueryXPath(this.document, documentElement, |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
574 './atom:title'); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
575 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
|
576 title = this.parseAtomTextConstruct(titleElement); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
577 } |
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 let subtitleElement = feedQueryXPath(this.document, documentElement, |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
580 './atom:subtitle'); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
581 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
|
582 subtitle = this.parseAtomTextConstruct(subtitleElement); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
583 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
584 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
585 let logoElement = feedQueryXPath(this.document, documentElement, |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
586 './atom:logo'); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
587 if (logoElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
588 try { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
589 logo = this.parseAtomLogo(logoElement); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
590 } catch (e) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
591 if (!(e instanceof TypeError)) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
592 throw e; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
593 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
594 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
595 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
596 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
597 let entryElements = feedQueryXPathAll(this.document, documentElement, |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
598 './atom:entry'); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
599 for (let entryElement of entryElements) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
600 entries.push(this.parseAtomEntry(entryElement)); |
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 |
31
76e23b361e92
Allow feed reader addons to subscribe to the currently viewed feed
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
28
diff
changeset
|
603 return new Feed(this.url, 'application/atom+xml', |
76e23b361e92
Allow feed reader addons to subscribe to the currently viewed feed
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
28
diff
changeset
|
604 {title, subtitle, logo, entries}); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
605 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
606 |
19
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
607 parseRSS1Logo(imageElement, nsPrefix) { |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
608 let title; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
609 let urlElement = feedQueryXPath(this.document, imageElement, |
19
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
610 `./${nsPrefix}:url`); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
611 if (urlElement === null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
612 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
|
613 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
614 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
|
615 if (url === null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
616 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
|
617 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
618 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
619 let titleElement = feedQueryXPath(this.document, imageElement, |
19
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
620 `./${nsPrefix}:title`); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
621 if (titleElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
622 title = titleElement.textContent.trim(); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
623 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
624 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
625 return new FeedLogo(url, {title}); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
626 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
627 |
19
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
628 parseRSS1Entry(itemElement, nsPrefix) { |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
629 let title; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
630 let link; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
631 let titleElement = feedQueryXPath(this.document, itemElement, |
19
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
632 `./${nsPrefix}:title`); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
633 if (titleElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
634 title = titleElement.textContent; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
635 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
636 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
637 let linkElement = feedQueryXPath(this.document, itemElement, |
19
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
638 `./${nsPrefix}:link`); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
639 if (linkElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
640 link = parseURL(linkElement.textContent, this.url); |
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 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
643 return new FeedEntry({title, link}); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
644 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
645 |
19
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
646 parseRSS1Feed(version) { |
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
647 let nsPrefix = version === '0.9' ? 'rss09' : 'rss10'; |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
648 let title; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
649 let subtitle; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
650 let logo; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
651 let entries = []; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
652 let documentElement = this.document.documentElement; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
653 let titleElement = feedQueryXPath(this.document, documentElement, |
19
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
654 `./${nsPrefix}:channel/${nsPrefix}:title`); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
655 if (titleElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
656 title = titleElement.textContent; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
657 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
658 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
659 let descriptionElement = feedQueryXPath(this.document, documentElement, |
19
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
660 `./${nsPrefix}:channel/${nsPrefix}:description`); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
661 if (descriptionElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
662 subtitle = descriptionElement.textContent; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
663 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
664 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
665 let imageElement = feedQueryXPath(this.document, documentElement, |
19
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
666 `./${nsPrefix}:image`); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
667 if (imageElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
668 try { |
19
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
669 logo = this.parseRSS1Logo(imageElement, nsPrefix); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
670 } catch (e) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
671 if (!(e instanceof TypeError)) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
672 throw e; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
673 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
674 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
675 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
676 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
677 let itemElements = feedQueryXPathAll(this.document, documentElement, |
19
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
678 `./${nsPrefix}:item`); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
679 for (let itemElement of itemElements) { |
19
3fcd2209b39a
Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
18
diff
changeset
|
680 let entry = this.parseRSS1Entry(itemElement, nsPrefix); |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
681 if (typeof entry !== 'undefined') { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
682 entries.push(entry); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
683 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
684 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
685 |
31
76e23b361e92
Allow feed reader addons to subscribe to the currently viewed feed
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
28
diff
changeset
|
686 return new Feed(this.url, 'application/rss+xml', |
76e23b361e92
Allow feed reader addons to subscribe to the currently viewed feed
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
28
diff
changeset
|
687 {title, subtitle, logo, entries}); |
6
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 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
690 parseRSS2Logo(imageElement) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
691 let title; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
692 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
|
693 if (urlElement === null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
694 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
|
695 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
696 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
|
697 if (url === null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
698 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
|
699 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
700 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
701 let titleElement = feedQueryXPath(this.document, imageElement, |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
702 './title'); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
703 if (titleElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
704 title = titleElement.textContent.trim(); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
705 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
706 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
707 return new FeedLogo(url, {title}); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
708 } |
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 parseRSS2EntryFile(enclosureElement) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
711 let type; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
712 let size; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
713 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
|
714 if (url === null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
715 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
|
716 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
717 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
718 let typeAttribute = enclosureElement.getAttribute('type'); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
719 if (typeAttribute !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
720 type = typeAttribute; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
721 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
722 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
723 let length = parseInt(enclosureElement.getAttribute('length'), |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
724 10); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
725 if (!isNaN(length)) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
726 size = length; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
727 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
728 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
729 return new FeedEntryFile(url, {type, size}); |
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 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
732 parseRSS2Entry(itemElement) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
733 let title; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
734 let link; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
735 let date; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
736 let content; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
737 let files = []; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
738 let titleElement = feedQueryXPath(this.document, itemElement, |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
739 './title'); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
740 if (titleElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
741 title = titleElement.textContent; |
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 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
744 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
|
745 if (linkElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
746 link = parseURL(linkElement.textContent, this.url); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
747 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
748 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
749 let pubDateElement = feedQueryXPath(this.document, itemElement, |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
750 './pubDate'); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
751 if (pubDateElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
752 date = parseDate(pubDateElement.textContent); |
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 |
47
b68880838990
Add support for the RSS Content module to the RSS 2.0 feed parser
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
31
diff
changeset
|
755 let encodedElement = feedQueryXPath(this.document, itemElement, |
b68880838990
Add support for the RSS Content module to the RSS 2.0 feed parser
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
31
diff
changeset
|
756 './content:encoded'); |
b68880838990
Add support for the RSS Content module to the RSS 2.0 feed parser
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
31
diff
changeset
|
757 if (encodedElement !== null) { |
b68880838990
Add support for the RSS Content module to the RSS 2.0 feed parser
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
31
diff
changeset
|
758 content = encodedElement.textContent.trim(); |
b68880838990
Add support for the RSS Content module to the RSS 2.0 feed parser
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
31
diff
changeset
|
759 } else { |
b68880838990
Add support for the RSS Content module to the RSS 2.0 feed parser
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
31
diff
changeset
|
760 let descriptionElement = feedQueryXPath(this.document, itemElement, |
b68880838990
Add support for the RSS Content module to the RSS 2.0 feed parser
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
31
diff
changeset
|
761 './description'); |
b68880838990
Add support for the RSS Content module to the RSS 2.0 feed parser
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
31
diff
changeset
|
762 if (descriptionElement !== null) { |
b68880838990
Add support for the RSS Content module to the RSS 2.0 feed parser
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
31
diff
changeset
|
763 content = descriptionElement.textContent.trim(); |
b68880838990
Add support for the RSS Content module to the RSS 2.0 feed parser
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
31
diff
changeset
|
764 } |
6
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
765 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
766 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
767 for (let enclosureElement of |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
768 feedQueryXPathAll(this.document, itemElement, './enclosure')) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
769 try { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
770 let entryFile = this.parseRSS2EntryFile(enclosureElement); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
771 files.push(entryFile); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
772 } catch (e) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
773 if (!(e instanceof TypeError)) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
774 throw e; |
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 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
777 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
778 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
779 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
|
780 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
781 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
782 parseRSS2Feed() { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
783 let title; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
784 let subtitle; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
785 let logo; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
786 let entries = []; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
787 let documentElement = this.document.documentElement; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
788 let titleElement = feedQueryXPath(this.document, documentElement, |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
789 './channel/title'); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
790 if (titleElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
791 title = titleElement.textContent; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
792 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
793 |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
794 let descriptionElement = feedQueryXPath(this.document, documentElement, |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
795 './channel/description'); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
796 if (descriptionElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
797 subtitle = descriptionElement.textContent; |
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 let imageElement = feedQueryXPath(this.document, documentElement, |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
801 './channel/image'); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
802 if (imageElement !== null) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
803 try { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
804 logo = this.parseRSS2Logo(imageElement); |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
805 } catch (e) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
806 if (!(e instanceof TypeError)) { |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
807 throw e; |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
808 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
809 } |
5d7c13e998e9
Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff
changeset
|
810 } |
5d7c13e998e9
Create feed previews using a stream filter
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811 |
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Create feed previews using a stream filter
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812 let itemElements = feedQueryXPathAll(this.document, documentElement, |
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813 './channel/item'); |
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Create feed previews using a stream filter
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814 for (let itemElement of itemElements) { |
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815 let entry = this.parseRSS2Entry(itemElement); |
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Create feed previews using a stream filter
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816 if (typeof entry !== 'undefined') { |
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817 entries.push(entry); |
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Create feed previews using a stream filter
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818 } |
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Create feed previews using a stream filter
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819 } |
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820 |
31
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Allow feed reader addons to subscribe to the currently viewed feed
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821 return new Feed(this.url, 'application/rss+xml', |
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822 {title, subtitle, logo, entries}); |
6
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Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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823 } |
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Create feed previews using a stream filter
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824 |
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825 parseFromString(xmlString, url) { |
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826 this.url = url; |
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Create feed previews using a stream filter
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827 this.document = new DOMParser().parseFromString(xmlString, |
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Create feed previews using a stream filter
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828 'application/xml'); |
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Add support for Atom 0.3 feeds
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829 if (this.document.documentElement.namespaceURI === XMLNS.PARSERERROR) { |
6
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Create feed previews using a stream filter
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830 throw new ParserError(this.document.documentElement.textContent); |
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831 } |
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|
832 |
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833 let [type, version] = this.constructor.probeFeed(this.document); |
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834 if (type === 'atom') { |
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835 if (version === '0.3') { |
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836 return this.parseAtom03Feed(); |
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837 } else if (version === '1.0') { |
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838 return this.parseAtomFeed(); |
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839 } |
6
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840 } else if (type === 'rss') { |
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Add support for RSS 1.0 feeds
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18
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841 if (version === '0.9' || version === '1.0') { |
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842 return this.parseRSS1Feed(version); |
6
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843 } else { |
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844 return this.parseRSS2Feed(); |
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Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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845 } |
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|
846 } |
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Create feed previews using a stream filter
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parents:
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847 throw new UnsupportedFeedTypeError(); |
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Create feed previews using a stream filter
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848 } |
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Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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849 } |