Mercurial > addons > firefox-addons > feed-preview

annotate js/feed-parser.js @ 47:b68880838990

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Add support for the RSS Content module to the RSS 2.0 feed parser
author Guido Berhoerster <guido+feed-preview@berhoerster.name>
date Wed, 03 Jul 2019 16:57:17 +0200
parents 76e23b361e92
children d5506fdb65f0
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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 '&lt;';
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26 case '>': return '&gt;';
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27 case '&': return '&amp;';
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28 case '\'': return '&apos;';
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29 case '"': return '&quot;';
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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'),
6
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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' &&
6
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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'];
6
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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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diff changeset
240 if (contentType === null) {
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diff changeset
241 contentType = 'text/plain';
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242 }
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parents: 14
diff changeset
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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parents: 14
diff changeset
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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diff changeset
256 if (typeof htmlText === 'undefined') {
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diff changeset
257 return;
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258 }
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259 if (textOnly) {
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diff changeset
260 let htmlDocument = new DOMParser().parseFromString(htmlText,
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parents: 14
diff changeset
261 'application/xhtml+xml');
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parents: 14
diff changeset
262 if (htmlDocument.documentElement.namespaceURI ===
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parents: 14
diff changeset
263 XMLNS.PARSERERROR) {
150f07c7595f Add support for Atom 0.3 feeds
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diff changeset
264 return;
150f07c7595f Add support for Atom 0.3 feeds
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diff changeset
265 }
150f07c7595f Add support for Atom 0.3 feeds
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diff changeset
266 return htmlDocument.body.textContent.trim();
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diff changeset
267 }
150f07c7595f Add support for Atom 0.3 feeds
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diff changeset
268 return htmlText;
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diff changeset
269 } else if (contentType === 'text/html') {
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diff changeset
270 let htmlText;
150f07c7595f Add support for Atom 0.3 feeds
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diff changeset
271 if (contentMode === 'escaped') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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diff changeset
272 htmlText = containerElement.textContent;
150f07c7595f Add support for Atom 0.3 feeds
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diff changeset
273 } else if (contentMode === 'base64') {
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diff changeset
274 htmlText = base64Decode(containerElement.textContent);
150f07c7595f Add support for Atom 0.3 feeds
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diff changeset
275 }
150f07c7595f Add support for Atom 0.3 feeds
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diff changeset
276 if (typeof htmlText === 'undefined') {
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Guido Berhoerster <guido+feed-preview@berhoerster.name>
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diff changeset
277 return;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
278 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
279 if (textOnly) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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diff changeset
280 let htmlDocument = new DOMParser().parseFromString(htmlText,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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diff changeset
281 'text/html');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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diff changeset
282 return htmlDocument.body.textContent.trim();
150f07c7595f Add support for Atom 0.3 feeds
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diff changeset
283 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
284 return htmlText;
150f07c7595f Add support for Atom 0.3 feeds
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diff changeset
285 } else if (contentType === 'text/plain') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
286 let text;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
287 if (contentMode === 'escaped') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
288 text = containerElement.textContent;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
289 } else if (contentMode === 'base64') {
150f07c7595f Add support for Atom 0.3 feeds
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parents: 14
diff changeset
290 text = base64Decode(containerElement.textContent);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
291 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
292 if (typeof text === 'undefined') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
293 return;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
294 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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diff changeset
295 return textOnly ? text : `<pre>${encodeXML(text)}</pre>`;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
296 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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diff changeset
297 return;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
298 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
299
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
300 parseAtom03Content(contentElement) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
301 // ordered from lowest to highest preference
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
302 const contentTypes = [
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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diff changeset
303 'text/plain',
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
304 'text/html',
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
305 'application/xhtml+xml'
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
306 ];
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
307 if (contentElement.getAttribute('type') === 'multipart/alternative' &&
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
308 contentElement.getAttribute('mode') === null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
309 // select alternative according to above preference
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
310 let selectedTypeIndex = -1;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
311 let selectedElement;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
312 for (let innerContentElement of contentElement.children) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
313 if (innerContentElement.localName !== 'content' ||
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
314 innerContentElement.namespaceURI !== XMLNS.ATOM03) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
315 throw new TypeError('child elements of a multipart ' +
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
316 ' content elements must be content elements');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
317 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
318 let innerContentType = innerContentElement.getAttribute('type');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
319 if (innerContentType === null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
320 innerContentType = 'text/plain';
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
321 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
322 let typeIndex = contentTypes.indexOf(innerContentType);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
323 if (typeIndex > selectedTypeIndex) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
324 selectedTypeIndex = typeIndex;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
325 selectedElement = innerContentElement;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
326 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
327 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
328 if (selectedTypeIndex >= 0) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
329 contentElement = selectedElement;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
330 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
331 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
332
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
333 return this.parseAtom03ContentConstruct(contentElement, false);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
334 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
335
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
336 parseAtom03Entry(entryElement) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
337 let title;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
338 let link;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
339 let date;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
340 let content;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
341 let titleElement = feedQueryXPath(this.document, entryElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
342 './atom03:title');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
343 if (titleElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
344 title = titleElement.textContent.trim();
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
345 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
346
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
347 let linkElement = feedQueryXPath(this.document, entryElement,
28
104a1faebd43 Fix XPath query syntax
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 25
diff changeset
348 './atom03:link[@href][contains(concat(" ", ' +
104a1faebd43 Fix XPath query syntax
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 25
diff changeset
349 'normalize-space(@rel), " "), " alternate ")]');
15
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
350 if (linkElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
351 link = parseURL(linkElement.getAttribute('href'), this.url);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
352 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
353
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
354 let modifiedElement = feedQueryXPath(this.document, entryElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
355 './atom03:modified');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
356 if (modifiedElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
357 date = parseDate(modifiedElement.textContent);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
358 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
359
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
360 let contentElement = feedQueryXPath(this.document, entryElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
361 './atom03:content');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
362 if (contentElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
363 try {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
364 content = this.parseAtom03Content(contentElement);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
365 } catch (e) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
366 if (!(e instanceof TypeError)) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
367 throw e;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
368 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
369 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
370 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
371 if (typeof content === 'undefined') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
372 let summaryElement = feedQueryXPath(this.document, entryElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
373 './atom03:summary');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
374 if (summaryElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
375 try {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
376 content = this.parseAtom03ContentConstruct(summaryElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
377 false);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
378 } catch (e) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
379 if (!(e instanceof TypeError)) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
380 throw e;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
381 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
382 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
383 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
384 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
385
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
386 return new FeedEntry({title, link, date, content});
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
387 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
388
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
389 parseAtom03Feed() {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
390 let title;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
391 let subtitle;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
392 let logo;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
393 let entries = [];
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
394 let documentElement = this.document.documentElement;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
395
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
396 let titleElement = feedQueryXPath(this.document, documentElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
397 './atom03:title');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
398 if (titleElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
399 try {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
400 title = this.parseAtom03ContentConstruct(titleElement);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
401 } catch (e) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
402 if (!(e instanceof TypeError)) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
403 throw e;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
404 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
405 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
406 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
407
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
408 let taglineElement = feedQueryXPath(this.document, documentElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
409 './atom03:tagline');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
410 if (taglineElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
411 try {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
412 title = this.parseAtom03ContentConstruct(taglineElement);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
413 } catch (e) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
414 if (!(e instanceof TypeError)) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
415 throw e;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
416 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
417 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
418 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
419
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
420 let logoElement = feedQueryXPath(this.document, documentElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
421 './atom03:logo');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
422 if (logoElement !== null) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
423 try {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
424 logo = this.parseAtomLogo(logoElement);
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
425 } catch (e) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
426 if (!(e instanceof TypeError)) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
427 throw e;
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
428 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
429 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
430 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
431
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
432 let entryElements = feedQueryXPathAll(this.document, documentElement,
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
433 './atom03:entry');
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
434 for (let entryElement of entryElements) {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
435 entries.push(this.parseAtom03Entry(entryElement));
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
436 }
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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 changeset
443 let url = parseURL(logoElement.textContent.trim(), this.url);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
444 if (url === null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
445 throw new TypeError('invalid URL in <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
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
453 contentType = 'text';
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
463 }
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
464 } else if (contentType === 'html') {
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
465 let htmlText = containerElement.textContent;
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
466 if (textOnly) {
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
467 let htmlDocument = new DOMParser().parseFromString(htmlText,
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
468 'text/html');
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
469 return htmlDocument.body.textContent.trim();
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
470 }
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
471 return htmlText
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
472 } else if (contentType === 'text') {
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
473 let text = containerElement.textContent.trim();
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
474 return textOnly ? text : `<pre>${encodeXML(text)}</pre>`;
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
475 }
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
476
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
477 // unsupported content type
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
478 return;
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
479 }
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
480
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
481 parseAtomContent(contentElement) {
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
482 let contentSrc = contentElement.getAttribute('src');
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
483 if (contentSrc !== null) {
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
484 // externally referenced content is not supported
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
485 return;
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
486 }
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
487 return this.parseAtomTextConstruct(contentElement, false);
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
488 }
376a0e415bba Properly handle non-text content in Atom feed elements
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 7
diff changeset
489
17
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
490 parseAtomEntryFile(enclosureElement) {
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
491 let type;
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
492 let size;
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
493 let url = parseURL(enclosureElement.getAttribute('href'), this.url);
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
494 if (url === null) {
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
495 throw new TypeError('invalid URL in enclosure href attribute');
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
496 }
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
497
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
498 let typeAttribute = enclosureElement.getAttribute('type');
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
499 if (typeAttribute !== null) {
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
500 type = typeAttribute;
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
501 }
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
502
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
503 let length = parseInt(enclosureElement.getAttribute('length'), 10);
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
504 if (!isNaN(length)) {
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
505 size = length;
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
506 }
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
507
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
508 return new FeedEntryFile(url, {type, size});
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
509 }
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
510
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
511 parseAtomEntry(entryElement) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
512 let title;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
513 let link;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
514 let date;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
515 let content;
17
48cabd01ef64 Add support for enclosures in Atom feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 15
diff changeset
516 let files = [];
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
517 let titleElement = feedQueryXPath(this.document, entryElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
518 './atom:title');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
519 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
520 title = this.parseAtomTextConstruct(titleElement);
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
521 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
522
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
523 let linkElement = feedQueryXPath(this.document, entryElement,
28
104a1faebd43 Fix XPath query syntax
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 25
diff changeset
524 './atom:link[@href][not(@rel) or contains(concat(" ", ' +
104a1faebd43 Fix XPath query syntax
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 25
diff changeset
525 'normalize-space(@rel), " "), " alternate ")]');
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
526 if (linkElement !== null) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
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
Guido Berhoerster <guido+feed-preview@berhoerster.name>
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
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
811
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
812 let itemElements = feedQueryXPathAll(this.document, documentElement,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
813 './channel/item');
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
814 for (let itemElement of itemElements) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
815 let entry = this.parseRSS2Entry(itemElement);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
816 if (typeof entry !== 'undefined') {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
817 entries.push(entry);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
818 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
819 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
820
31
76e23b361e92 Allow feed reader addons to subscribe to the currently viewed feed
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 28
diff changeset
821 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
822 {title, subtitle, logo, entries});
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
823 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
824
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
825 parseFromString(xmlString, url) {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
826 this.url = url;
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
827 this.document = new DOMParser().parseFromString(xmlString,
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
828 'application/xml');
15
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
829 if (this.document.documentElement.namespaceURI === XMLNS.PARSERERROR) {
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
830 throw new ParserError(this.document.documentElement.textContent);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
831 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
832
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
833 let [type, version] = this.constructor.probeFeed(this.document);
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
834 if (type === 'atom') {
15
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
835 if (version === '0.3') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
836 return this.parseAtom03Feed();
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
837 } else if (version === '1.0') {
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
838 return this.parseAtomFeed();
150f07c7595f Add support for Atom 0.3 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 14
diff changeset
839 }
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
840 } else if (type === 'rss') {
19
3fcd2209b39a Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 18
diff changeset
841 if (version === '0.9' || version === '1.0') {
3fcd2209b39a Add support for RSS 1.0 feeds
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents: 18
diff changeset
842 return this.parseRSS1Feed(version);
6
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
843 } else {
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
844 return this.parseRSS2Feed();
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
845 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
846 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
847 throw new UnsupportedFeedTypeError();
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
848 }
5d7c13e998e9 Create feed previews using a stream filter
Guido Berhoerster <guido+feed-preview@berhoerster.name>
parents:
diff changeset
849 }