sjehuda
commented
7 months ago This is an example if you want to make the file downloadable when using the script.
function generateOPML() {
/*
<?xml version="1.0" encoding="utf-8"?>
<opml version="1.0">
<head>
<title>Liferea Feed List Export</title>
</head>
<body>
<outline title="TITLE" text="TITLE" description="TITLE" type="folder">
<outline title="TITLE" text="TITLE" description="TITLE" type="rss" xmlUrl="URL"/>
</outline>
</body>
</opml>
*/
document
.querySelector('#opml-selection')
.addEventListener ('click', function() {
var opmlData = document.implementation.createDocument(null, "opml", null);
opmlData.getElementsByTagName("opml")[0].setAttribute("version", "1.0");
var text = opmlData.createTextNode("Newspaper Feed Selection");
let name = opmlData.createElement("title")
let head = opmlData.createElement("head")
let body = opmlData.createElement("body");
let sections = document.querySelectorAll('#feeds .content .category');
for (const section of sections) {
let title = section.querySelector('h3').outerText;
let category = opmlData.createElement("outline");
category.setAttribute("title", title);
category.setAttribute("text", title);
category.setAttribute("text", title);
category.setAttribute("type", "folder");
// TODO Handle subcategories
let links = section.querySelectorAll('a');
for (const link of links) {
let feed = opmlData.createElement("outline");
let title = link.outerText;
let url = link.href;
feed.setAttribute("title", title);
feed.setAttribute("text", title);
feed.setAttribute("text", title);
// NOTE This value (rss) is arbitrary.
// TODO Add type to class.
//feed.setAttribute("type", "rss");
feed.setAttribute("xmlUrl", url);
category.appendChild(feed);
}
body.appendChild(category);
}
head.appendChild(name);
name.appendChild(text);
opmlData.getElementsByTagName("opml")[0].appendChild(head);
opmlData.getElementsByTagName("opml")[0].appendChild(body);
var opmlFile = new XMLSerializer().serializeToString(opmlData);
savePage(
opmlFile,
'i2p-schimon-newspaper',
'text/x-opml+xml',
'opml'
)
});
}
// export file
// /questions/4545311/download-a-file-by-jquery-ajax
// /questions/43135852/javascript-export-to-text-file
var savePage = (function () {
var a = document.createElement("a");
// document.body.appendChild(a);
// a.style = "display: none";
return function (fileData, fileName, fileType, fileExtension) {
var blob = new Blob([fileData], {type: fileType}),
url = window.URL.createObjectURL(blob);
a.href = url;
a.download = fileName + '.' + fileExtension;
a.click();
window.URL.revokeObjectURL(url);
};
}());I've extracted this from https://greasyfork.org/en/scripts/465932-newspaper-native-rss-reader
I suggest to add both, opml file (when js is disabled) and js script (when js is enabled).
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