// ==UserScript==
// @name    Publication Auto PDF
// @name:zh-CN  SCI文#PDF直达
// @version 0.5.0
// @author  sincostandx
// @description Automatically jumps to PDF when you visit a journal article abstract page. Also includes a utility to copy or download citation info.
// @description:zh-CN  访问SCI文#摘要页时自动跳转至PDF，附带文#摘录工具
// @match https://www.sciencedirect.com/science/article/*
// @match https://onlinelibrary.wiley.com/doi/*
// @match https://*.onlinelibrary.wiley.com/doi/*
// @match https://pubs.acs.org/doi/*
// @match https://www.tandfonline.com/doi/*
// @match https://www.beilstein-journals.org/*
// @match https://pubs.rsc.org/en/content/*
// @match https://link.springer.com/article*
// @match https://pubs.aip.org/aip/*/article/*
// @match https://www.nature.com/articles*
// @match https://www.science.org/doi/*
// @match https://journals.aps.org/*/abstract/10*
// @match https://cdnsciencepub.com/doi/*
// @match https://iopscience.iop.org/article/10*
// @match https://www.cell.com/*/fulltext/*
// @match https://journals.lww.com/*
// @match https://*.biomedcentral.com/articles/*
// @match https://journals.sagepub.com/doi/*
// @match https://academic.oup.com/*/article/*
// @match https://karger.com/*/article/*
// @match https://www.cambridge.org/core/journals/*/article/*
// @match https://www.annualreviews.org/doi/*
// @match https://www.jstage.jst.go.jp/article/*
// @match https://www.hindawi.com/journals/*
// @match https://*.theclinics.com/article/*
// @match https://www.liebertpub.com/doi/*
// @match https://thorax.bmj.com/content/*
// @match https://journals.physiology.org/doi/*
// @match https://www.ahajournals.org/doi/*
// @match https://dl.acm.org/doi/*
// @match https://journals.asm.org/doi/*
// @match https://*.apa.org/record/*
// @match https://*.apa.org/fulltext/*
// @match https://www.thelancet.com/journals/*/article/*
// @match https://jamanetwork.com/journals/*
// @match https://aacrjournals.org/*/article/*
// @match https://royalsocietypublishing.org/doi/*
// @match https://journals.plos.org/*/article*
// @match https://*.psychiatryonline.org/doi/*
// @match https://opg.optica.org/*/*.cfm*
// @match https://www.thieme-connect.de/products/ejournals/*
// @match https://journals.ametsoc.org/view/journals/*
// @match https://www.frontiersin.org/articles/*
// @match https://www.worldscientific.com/doi/*
// @match https://www.nejm.org/doi/*
// @match https://ascopubs.org/doi/*
// @match https://www.jto.org/article/*
// @match https://www.jci.org/articles/*
// @match https://www.pnas.org/doi/*
// @grant   GM.getValue
// @grant   GM.setValue
// @run-at  document-start
// @namespace https://greasyfork.org/users/171198
// ==/UserScript==
(function() {
"use strict";
let tit = null; // title
let doi = null;
let pdf = null; // pdf url
let sty = null; // citation text style
// attempt to extract DOI from URL
function getCrudeDOI() {
const l = location.pathname.match(/(^.+doi\/)([^/]+\/)?(10\.[^/]+\/[^/]+)/);
if (l === null) return [null, null];
const d = l[l.length-1];
return [d, l[1] + "pdf/" + d];
}
const [doiCrude, pdfPathname] = getCrudeDOI();
// determine if we need to redirect to PDF
let jump = sessionStorage.getItem("%" + doiCrude) === null &&
sessionStorage.getItem(location.pathname) === null;
// For sites in "shortcutSites" modify the URL directly.
// Otherwise, load PDF link from meta data or DOM.
if (doiCrude !== null) {
sessionStorage.setItem("%" + doiCrude, "1");
if (jump && location.pathname !== pdfPathname) {
const shortcutSites = ["acs", "aps", "wiley", "tandfonline", "sagepub", "annualreviews", "liebertpub",
"physiology", "ahajournals", "acm", "royalsocietypublishing", "psychiatryonline", "thieme",
"worldscientific", "nejm", "ascopubs", "cdnsciencepub", "asm", "science", "pnas"];
const hostname = location.hostname;
if (shortcutSites.some(a=>hostname.includes(a))) {
location.pathname = pdfPathname;
}
} else {
new Promise(checkLoaded).then(loadMeta);
}
} else {
sessionStorage.setItem(location.pathname, "1");
if (location.hostname.includes(".apa.")) {
new Promise(checkAPALoaded).then(loadMeta);
} else {
new Promise(checkLoaded).then(loadMeta);
}
}
function checkLoaded(resolve) {
function check(){
if (document.body !== null && document.body.innerHTML.length !== 0) {
resolve();
} else {
setTimeout(check, 100);
}
}
check();
}
function checkAPALoaded(resolve) {
let count = 0;
function check(){
const main = document.querySelector("main");
if (main !== null && main.offsetHeight > 300) {
resolve();
} else if (++count < 30){
setTimeout(check, 1000);
}
}
check();
}
function loadMeta() {
const titmeta = ["dc.title", "citation_title", "wkhealth_title", "og:title"];
const doimeta = ["citation_doi", "dc.identifier", "dc.source"];
const pdfmeta = ["citation_pdf_url", "wkhealth_pdf_url"];
const metaList = document.getElementsByTagName("meta");
for (const meta of metaList) {
let n = meta.getAttribute("name");
if (n === null) {
n = meta.getAttribute("property");
if (n === null) continue;
}
n = n.toLowerCase();
if (tit === null && titmeta.includes(n)) {
tit = meta.getAttribute("content");
continue;
}
if (doi === null && doimeta.includes(n)) {
const d = meta.getAttribute("content");
if (d.includes("10.")) {
if (d.includes("doi")) {
doi = d.slice(d.indexOf("10."));
} else {
doi = d;
}
continue;
}
}
if (pdf === null && pdfmeta.includes(n)) {
pdf = meta.getAttribute("content");
}
}
if (jump && location.hostname.includes("sciencedirect")) {
if (loadElsevierPDF()) return;
}
if (pdf !== null && location.hostname.includes(".apa.")) {
// need to remove query string in apa pdf links
const url = new URL(pdf);
url.search = '';
pdf = url.toString();
}
if (jump && pdf !== null && location.href !== pdf) {
location.href = pdf;
} else {
if (doi === null) {
doi = doiCrude;
if (doi === null) return;
}
if (tit === null) tit = "Unknown Title";
if (pdf === null) pdf = pdfPathname;
toolbox(tit, doi, pdf);
}
}
// newbr, newinput, newtag are util functions to create toolbox elements.
function newbr(parent) {
parent.appendChild(document.createElement("br"));
}
function newinput(parent, type, value, onclick) {
const i = document.createElement("input");
i.type = type;
i.value = value;
if (onclick !== null) {
i.addEventListener("click", onclick, false);
}
i.className = "toolbox";
parent.appendChild(i);
return i;
}
function newtag(parent, tag, text) {
const i = document.createElement(tag);
if (text !== null) {
i.textContent = text;
}
i.className = "toolbox";
parent.appendChild(i);
return i;
}
function loadElsevierPDF() {
let pdflink = null;
let trials = 0;
function getJSON(resolve) {
function get() {
const json = document.querySelector('script[type="application/json"]');
try {
const meta = JSON.parse(json.innerHTML).article.pdfDownload.urlMetadata;
pdflink = "/" + meta.path + "/" + meta.pii + meta.pdfExtension + "?md5=" + meta.queryParams.md5 + "&pid=" + meta.queryParams.pid;
return true;
} catch(e) {
return false;
}
}
if (!get()) {
if (++trials > 30) {
console.error("Auto PDF: Unable to load JSON from DOM!");
throw "";
}
setTimeout(() => {getJSON(resolve);}, 1000);
return;
}
resolve(pdflink);
}
new Promise(getJSON).then((pdflink) => {
location.href = pdflink;
}).catch(() => {});
return true;
}
function toolbox(tit, doi, pdf) {
const div = document.createElement("div");
div.style = `
z-index: 2147483647;
position: fixed;
right: 10px;
top: 50%;
transform: translate(0, -50%);
border: 2px groove black;
background: white;
box-shadow: 6px 6px 3px grey;`;
const sheet = document.createElement("style")
sheet.textContent = `
.toolbox {
font-size: small !important;
font-family: sans-serif !important;
margin-bottom: 4px !important;
margin-top: 0 !important;
display: initial !important;
line-height: initial !important;
}
input.toolbox, select.toolbox {
background-image: none !important;
width: auto;
max-height: none;
height: initial;
}
textarea.toolbox, input.toolbox[type=text] {
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
width: 11em;
padding: 0.5rem;
border-style: solid;
}
a.toolbox:hover {
color: #006db4;
}
a.toolbox {
cursor: pointer;
color: #10147e;
}
input.toolbox[type=button]:hover {
background: #006db4;
}
input.toolbox[type=button] {
padding: 4px 8px;
background: #10147e;
color: white;
border-radius: 4px;
border: none;
cursor: pointer;
}
[tooltip]:before {
position: absolute;
opacity: 0;
}
[tooltip]:hover:before {
content: attr(tooltip);
opacity: 1;
color: black;
background: white;
padding: 2px;
border: 1px groove black;
white-space: nowrap;
overflow: hidden;
right: 0;
margin-top: -25pt;
}
h2.toolbox {
font-size: large !important;
}
`;
div.appendChild(sheet);
// Hide and Settings button
const hide_btn_parent = newtag(div, "div", null);
hide_btn_parent.style = "display: flex !important; justify-content: flex-end; padding-right: 10px;";
const hide_btn = newtag(hide_btn_parent, "a", "✖");
hide_btn.style = "font-size: large !important; text-decoration: none;";
hide_btn.addEventListener("click", () => div.remove(), false);
// DOI textbox and copy button
const txt_doi = newinput(div,"text",doi,null);
newbr(div);
newinput(div, "button", "Copy", () => {txt_doi.select(); document.execCommand("Copy");});
newbr(div);newbr(div);
// info textbox and copy button
const info = tit + "\t" + doi;
const txt_inf = newinput(div, "text", info, null);
newbr(div);
newinput(div, "button", "Copy", () => {txt_inf.select(); document.execCommand("Copy");});
newbr(div);newbr(div);
// bibtex button
const txt_bib = newtag(div, "textarea", null);
txt_bib.style = "resize: none; display: none !important;";
newbr(div);
const btn_bib_label = "Copy BibTeX";
const btn_bib = newinput(div, "button", btn_bib_label, loadBib);
newbr(div);
function loadBib() {
btn_bib.disabled = true;
btn_bib.value = "Loading";
fetch("https://dx.doi.org/" + doi, {
headers: {
"Accept": "application/x-bibtex"
}})
.then(response => response.text())
.then(data => {
txt_bib.value = data;
txt_bib.style.display = "";
txt_bib.select();
document.execCommand("Copy");
btn_bib.value = btn_bib_label;
btn_bib.disabled = false;
})
.catch(error => {
alert("Cannot load BibTeX.");
btn_bib.value = btn_bib_label;
btn_bib.disabled = false;
});
}
// Text button
const btn_txt_label = "Copy Text";
const btn_txt = newinput(div, "button", btn_txt_label, loadTxt);
function loadTxt() {
if (sty === "") {
setstyle();
return;
}
btn_txt.disabled = true;
btn_txt.value = "Loading";
fetch("https://dx.doi.org/" + doi, {
headers: {
"Accept": "text/x-bibliography; style=" + sty
}})
.then(response => response.text())
.then(data => {
txt_bib.value = data;
txt_bib.style.display = "";
txt_bib.select();
document.execCommand("Copy");
btn_txt.value = btn_txt_label;
btn_txt.disabled = false;
})
.catch(error => {
alert("Cannot load text reference.");
btn_txt.value = btn_txt_label;
btn_txt.disabled = false;
});
}
// text style link
const stylink = newtag(div, "a", "Style");
stylink.addEventListener("click", setstyle, false);
newbr(div);
function setstyle() {
const div = document.createElement("div");
div.style = `
z-index: 2147483647;
position: fixed;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
border: 2px groove black;
background: white;
padding: 20px;
box-shadow: 10px 10px 5px grey;`;
newtag(div, "h2", "Choose a citation style for text references:");
const sel = newtag(div, "select", null);
sel.size = 15;
sel.style.minWidth = "600px";
newbr(div);
newtag(div, "p", "This citation style will be saved as default.").style = "margin-top: 5px !important";
newbr(div);
const btns = newtag(div, "div", null);
btns.style = "display: block !important; text-align: center;";
// OK button
newinput(btns, "button", "OK", () => {
setStyleAndTooltip(sel.value);
GM.setValue("sty", sty);
document.body.removeChild(div);
loadTxt();
});
// cancel button
newinput(btns, "button", "Cancel", () => document.body.removeChild(div)).style.marginLeft = "1em";
// load styles
fetch("https://citation.crosscite.org/styles")
.then(response => response.json())
.then(data => {
for (const i of data) {
const x = document.createElement("option");
x.text = i;
sel.add(x);
}
if (sty !== "") {
sel.value = sty;
} else {
sel.selectedIndex = 0;
}
})
.catch(error => {
alert("Cannot load style list.");
document.body.removeChild(div);
});
document.body.appendChild(div);
}
// RIS link
const rislink = newtag(div, "a", "Download RIS");
rislink.addEventListener("click", loadris);
function loadris() {
rislink.removeEventListener("click", loadris);
fetch("https://dx.doi.org/" + doi, {
headers: {
"Accept": "application/x-research-info-systems"
}})
.then(response => response.text())
.then(data => {
const blob = new Blob([data], {type: "octet/stream"});
const url = URL.createObjectURL(blob);
rislink.href = url;
rislink.download = doi.replace("/", "_") + ".ris";
rislink.click();
})
.catch(error => {
alert("Cannot download RIS.");
rislink.addEventListener("click", loadris);
});
}
newbr(div);newbr(div);
// PDF link
if (pdf === null && location.hostname.includes("sciencedirect")) {
pdf = sessionStorage.getItem(doi);
if (pdf === null) {
const pdflink = newtag(div, "a", "PDF");
pdflink.addEventListener("click",() => {if (!loadElsevierPDF()) alert("Failed to load PDF link");});
newbr(div);newbr(div);
}
}
if (pdf !== null) {
const pdflink = newtag(div,"a","PDF");
pdflink.href = pdf;
newbr(div);newbr(div);
}
// Sci-Hub link
const scihubURL = "https://sci-hub.st/";
const scihublink = newtag(div, "a", "Sci-Hub");
if (doi !== null) {
scihublink.href = scihubURL + doi;
} else {
scihublink.href = scihubURL + location.href;
}
newbr(div);newbr(div);
document.body.appendChild(div);
function setStyleAndTooltip(v) {
sty = v;
stylink.setAttribute("tooltip", v === null ? "Reference style not set" : "Current style: " + v);
}
GM.getValue("sty", null).then(setStyleAndTooltip);
}
})();