Highlight PMC Text

highlight_pmc.user.js

// ==UserScript==
// @name         Highlight PMC
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  TBA
// @author       cannin
// @require      https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js
// @require      https://cdnjs.cloudflare.com/ajax/libs/mark.js/8.11.1/jquery.mark.min.js
// @grant    GM.getValue
// @grant    GM.setValue
// @include  http*://www.ncbi.nlm.nih.gov/pmc/articles/*
// ==/UserScript==

(function() {
    'use strict';

    function decodeStr(str) {
        var txt = document.createElement("textarea");
        txt.innerHTML = str;
        return txt.value;
    }

    var vars = {};
    var parts = window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m, key, value) {
        vars[key] = value;
    });

    var url = document.URL;
    console.log("D: " + url + " V: " + JSON.stringify(vars));

    var text = vars.text;

    // Fix HTML entities
    text = text.replace(/[+]/g, ' ');
    text = decodeURIComponent(text);

    // Escape regexp
    var regexpStr = text.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
    // Correct science specific elements
    regexpStr = regexpStr.replace(/alpha|beta|gamma|delta|epsilon/g, '.*');
    //regexpStr = regexpStr.replace(/-/g, '.*');
    regexpStr = regexpStr.replace('.*.*', '.*');
    //regexpStr = regexpStr.replace(/ /g, '.*');
    console.log("NCBI: 3 " + regexpStr);

    var regexp = new RegExp("\\b" + regexpStr + "\\b", "gi");

    try {
        // From: https://jsfiddle.net/julmot/vpav6tL1/
        $("#maincontent").markRegExp(regexp);
        $(window).scrollTop($('mark').offset().top-100);
    } catch (e1) {
        console.log(e1);
        try {
            window.find(text);
        } catch (e2) {
            console.log(e2);
        }
    }
})();