PDF search on Google

Adds a button to search PDF with Google
换行
// ==UserScript==
// @name         PDF search on Google
// @version      1.0.0
// @description  Adds a button to search PDF with Google
// @author       Mario O.M. and D.V
// @namespace    https://github.com/marioortizmanero/reddit-search-on-google/
// @include      http*://www.google.*/search*
// @include      http*://google.*/search*
// @run-at       document-end
// @license MIT
// ==/UserScript==

// Change this to false if you don't want an icon
const useIcon = true;
// Change this to true if you want to add the button to the right of the 'Tools' button
const appendRight = false;

const queryRegex = /q=[^&]+/g;
const siteRegex = /\+site(?:%3A|\:).+\.[^&+]+/g;
const redditUrl = '+filetype%3APDF';
let redditIcon = '<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-file-pdf" viewBox="0 0 16 16"> <path d="M4 0a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h8a2 2 0 0 0 2-2V2a2 2 0 0 0-2-2H4zm0 1h8a1 1 0 0 1 1 1v12a1 1 0 0 1-1 1H4a1 1 0 0 1-1-1V2a1 1 0 0 1 1-1z"/> <path d="M4.603 12.087a.81.81 0 0 1-.438-.42c-.195-.388-.13-.776.08-1.102.198-.307.526-.568.897-.787a7.68 7.68 0 0 1 1.482-.645 19.701 19.701 0 0 0 1.062-2.227 7.269 7.269 0 0 1-.43-1.295c-.086-.4-.119-.796-.046-1.136.075-.354.274-.672.65-.823.192-.077.4-.12.602-.077a.7.7 0 0 1 .477.365c.088.164.12.356.127.538.007.187-.012.395-.047.614-.084.51-.27 1.134-.52 1.794a10.954 10.954 0 0 0 .98 1.686 5.753 5.753 0 0 1 1.334.05c.364.065.734.195.96.465.12.144.193.32.2.518.007.192-.047.382-.138.563a1.04 1.04 0 0 1-.354.416.856.856 0 0 1-.51.138c-.331-.014-.654-.196-.933-.417a5.716 5.716 0 0 1-.911-.95 11.642 11.642 0 0 0-1.997.406 11.311 11.311 0 0 1-1.021 1.51c-.29.35-.608.655-.926.787a.793.793 0 0 1-.58.029zm1.379-1.901c-.166.076-.32.156-.459.238-.328.194-.541.383-.647.547-.094.145-.096.25-.04.361.01.022.02.036.026.044a.27.27 0 0 0 .035-.012c.137-.056.355-.235.635-.572a8.18 8.18 0 0 0 .45-.606zm1.64-1.33a12.647 12.647 0 0 1 1.01-.193 11.666 11.666 0 0 1-.51-.858 20.741 20.741 0 0 1-.5 1.05zm2.446.45c.15.162.296.3.435.41.24.19.407.253.498.256a.107.107 0 0 0 .07-.015.307.307 0 0 0 .094-.125.436.436 0 0 0 .059-.2.095.095 0 0 0-.026-.063c-.052-.062-.2-.152-.518-.209a3.881 3.881 0 0 0-.612-.053zM8.078 5.8a6.7 6.7 0 0 0 .2-.828c.031-.188.043-.343.038-.465a.613.613 0 0 0-.032-.198.517.517 0 0 0-.145.04c-.087.035-.158.106-.196.283-.04.192-.03.469.046.822.024.111.054.227.09.346z"/> </svg>';
const isImageSearch = /[?&]tbm=isch/.test(location.search);

if (typeof trustedTypes !== 'undefined') {
    const policy = trustedTypes.createPolicy('html', { createHTML: input => input });
    redditIcon = policy.createHTML(redditIcon);
}

(function () {
    // Creating the element
    let el = document.createElement('div');
    el.className = 'hdtb-mitem';
    const link = document.createElement('a');

    // Adding the svg icon
    if (useIcon) {
        const span = document.createElement('span');
        span.className = isImageSearch ? 'm3kSL' : 'bmaJhd iJddsb';
        span.style.cssText = 'height:16px;width:16px';
        span.innerHTML = redditIcon;
        link.appendChild(span);
    }

    // Hyperlink to add 'site:reddit.com' to the query
    link.appendChild(document.createTextNode('PDF'));
    link.href = window.location.href.replace(queryRegex, (match) => {
        // Replaces the existing `site` flags
        return match.search(siteRegex) >= 0 ? match.replace(siteRegex, redditUrl) : match + redditUrl;
    });
    if (isImageSearch) {
        link.classList.add('NZmxZe');
        el = link;
    } else {
        el.appendChild(link);
    }

    // Inserting the element into Google search
    if (appendRight) {
        const toolsBtn = document.querySelector(isImageSearch ? '.ssfWCe' : '.t2vtad');
        toolsBtn.parentNode.insertBefore(el, toolsBtn.nextSibling);
    } else {
        const menuBar = document.querySelector(isImageSearch ? '.T47uwc' : '.MUFPAc');
        if (isImageSearch) {
            menuBar.insertBefore(el, menuBar.children[menuBar.childElementCount - 1]);
        } else {
            menuBar.appendChild(el);
        }
    }
})();
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