Mercurial > addons > firefox-addons > feed-preview

comparison js/feed-parser.js @ 48:d5506fdb65f0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add support for Dublin Core elements to the RSS 2.0 feed parser
author Guido Berhoerster <guido+feed-preview@berhoerster.name>
date Fri, 05 Jul 2019 13:29:29 +0200
parents b68880838990
children
comparison
equal deleted inserted replaced
47:b68880838990 48:d5506fdb65f0
12 ATOM03: 'http://purl.org/atom/ns#', 12 ATOM03: 'http://purl.org/atom/ns#',
13 ATOM10: 'http://www.w3.org/2005/Atom', 13 ATOM10: 'http://www.w3.org/2005/Atom',
14 RSS09: 'http://my.netscape.com/rdf/simple/0.9/', 14 RSS09: 'http://my.netscape.com/rdf/simple/0.9/',
15 RSS10: 'http://purl.org/rss/1.0/', 15 RSS10: 'http://purl.org/rss/1.0/',
16 CONTENT: 'http://purl.org/rss/1.0/modules/content/', 16 CONTENT: 'http://purl.org/rss/1.0/modules/content/',
17 DC: 'http://purl.org/dc/elements/1.1/',
17 XHTML: 'http://www.w3.org/1999/xhtml', 18 XHTML: 'http://www.w3.org/1999/xhtml',
18 PARSERERROR: 'http://www.mozilla.org/newlayout/xml/parsererror.xml' 19 PARSERERROR: 'http://www.mozilla.org/newlayout/xml/parsererror.xml'
19 } 20 }
20 const ALLOWED_LINK_PROTOCOLS = new Set(['http:', 'https:', 'ftp:']); 21 const ALLOWED_LINK_PROTOCOLS = new Set(['http:', 'https:', 'ftp:']);
21 22
76 return XMLNS.RSS09; 77 return XMLNS.RSS09;
77 case 'rss10': 78 case 'rss10':
78 return XMLNS.RSS10; 79 return XMLNS.RSS10;
79 case 'content': 80 case 'content':
80 return XMLNS.CONTENT; 81 return XMLNS.CONTENT;
82 case 'dc':
83 return XMLNS.DC;
81 } 84 }
82 return null; 85 return null;
83 } 86 }
84 87
85 function feedQueryXPath(feedDocument, scopeElement, xpathQuery) { 88 function feedQueryXPath(feedDocument, scopeElement, xpathQuery) {
733 let title; 736 let title;
734 let link; 737 let link;
735 let date; 738 let date;
736 let content; 739 let content;
737 let files = []; 740 let files = [];
738 let titleElement = feedQueryXPath(this.document, itemElement, 741 let titleElement;
739 './title'); 742 let dateElement;
743 let contentElement;
744
745 titleElement = feedQueryXPath(this.document, itemElement,
746 './dc:title');
747 if (titleElement === null) {
748 titleElement = feedQueryXPath(this.document, itemElement,
749 './title');
750 }
740 if (titleElement !== null) { 751 if (titleElement !== null) {
741 title = titleElement.textContent; 752 title = titleElement.textContent;
742 } 753 }
743 754
744 let linkElement = feedQueryXPath(this.document, itemElement, './link'); 755 let linkElement = feedQueryXPath(this.document, itemElement, './link');
745 if (linkElement !== null) { 756 if (linkElement !== null) {
746 link = parseURL(linkElement.textContent, this.url); 757 link = parseURL(linkElement.textContent, this.url);
747 } 758 }
748 759
749 let pubDateElement = feedQueryXPath(this.document, itemElement, 760 dateElement = feedQueryXPath(this.document, itemElement, './dc:date');
750 './pubDate'); 761 if (dateElement === null) {
751 if (pubDateElement !== null) { 762 dateElement = feedQueryXPath(this.document, itemElement,
752 date = parseDate(pubDateElement.textContent); 763 './pubDate');
753 } 764 }
754 765 if (dateElement !== null) {
755 let encodedElement = feedQueryXPath(this.document, itemElement, 766 date = parseDate(dateElement.textContent);
767 }
768
769 contentElement = feedQueryXPath(this.document, itemElement,
756 './content:encoded'); 770 './content:encoded');
757 if (encodedElement !== null) { 771 if (contentElement === null) {
758 content = encodedElement.textContent.trim(); 772 contentElement = feedQueryXPath(this.document, itemElement,
759 } else { 773 './dc:description');
760 let descriptionElement = feedQueryXPath(this.document, itemElement, 774 }
775 if (contentElement === null) {
776 contentElement = feedQueryXPath(this.document, itemElement,
761 './description'); 777 './description');
762 if (descriptionElement !== null) { 778 }
763 content = descriptionElement.textContent.trim(); 779 if (contentElement !== null) {
764 } 780 content = contentElement.textContent.trim();
765 } 781 }
766 782
767 for (let enclosureElement of 783 for (let enclosureElement of
768 feedQueryXPathAll(this.document, itemElement, './enclosure')) { 784 feedQueryXPathAll(this.document, itemElement, './enclosure')) {
769 try { 785 try {
783 let title; 799 let title;
784 let subtitle; 800 let subtitle;
785 let logo; 801 let logo;
786 let entries = []; 802 let entries = [];
787 let documentElement = this.document.documentElement; 803 let documentElement = this.document.documentElement;
788 let titleElement = feedQueryXPath(this.document, documentElement, 804 let titleElement;
789 './channel/title'); 805 let descriptionElement;
806
807
808 titleElement = feedQueryXPath(this.document, documentElement,
809 './channel/dc:title');
810 if (titleElement === null) {
811 titleElement = feedQueryXPath(this.document, documentElement,
812 './channel/title');
813 }
790 if (titleElement !== null) { 814 if (titleElement !== null) {
791 title = titleElement.textContent; 815 title = titleElement.textContent;
792 } 816 }
793 817
794 let descriptionElement = feedQueryXPath(this.document, documentElement, 818 descriptionElement = feedQueryXPath(this.document, documentElement,
795 './channel/description'); 819 './channel/dc:description');
820 if (descriptionElement === null) {
821 descriptionElement = feedQueryXPath(this.document, documentElement,
822 './channel/description');
823 }
796 if (descriptionElement !== null) { 824 if (descriptionElement !== null) {
797 subtitle = descriptionElement.textContent; 825 subtitle = descriptionElement.textContent;
798 } 826 }
799 827
800 let imageElement = feedQueryXPath(this.document, documentElement, 828 let imageElement = feedQueryXPath(this.document, documentElement,