Open arXiv sites with arXivCN
// ==UserScript==
// @name GotoArXivCN
// @namespace https://github.com/zzilch/GotoArXivMirrors
// @homepage https://github.com/zzilch/GotoArXivMirrors
// @version 1.1
// @author zzilch
// @description Open arXiv sites with arXivCN
// @include /^https?://(.*\.)?arxiv\.org/.*/
// @include http://xxx.itp.ac.cn/*
// @run-at document-start
// ==/UserScript==
(function() {
'use strict';
// useful funcitons
function incompletePDF(url){ return url.includes('/pdf') && !url.endsWith('pdf') }
function abstractURL(url){ return url.includes('/abs') }
// available mirrors
let mirrors = {
'Main':'arxiv.org',
'China':'xxx.itp.ac.cn',
'Germany':'de.arxiv.org',
'India':'in.arxiv.org',
}
// auto redirect to ArxivCN
if(!location.href.includes(mirrors.China)){
let url = location.href.replace(location.hostname,mirrors.China).replace('https','http')
url = incompletePDF(url) ? url+'.pdf' : url
location.replace(url)
}
// append the filename extension for downloading
if(incompletePDF(location.href)) { history.pushState(null,"",location.href+'.pdf') }
// complete pdf url with filename extension after the document is loaded
onload = function(){
if(abstractURL(location.href))
{ document.querySelector("#abs > div.extra-services > div.full-text > ul > li:nth-child(1) > a").href += '.pdf' }
}
})();