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Douban2ZJUlib

Finds and logs ISBN numbers from the current webpage

  1. // ==UserScript==
  2. // @name        Douban2ZJUlib
  3. // @namespace   https://book.douban.com/subject/36099425/
  4. // @author       AlainAllen
  5. // @description Finds and logs ISBN numbers from the current webpage
  6. // @match     http://book.douban.com/subject/*
  7. // @match     https://book.douban.com/subject/*
  8. // @version     0.4
  9. // @grant       GM_xmlhttpRequest
  10. // @license MIT
  11. // ==/UserScript==
  12.  
  13. (function() {
  14.     'use strict';
  15.  
  16.     // Function to find the last ISBN in the element with ID 'info'
  17.     function findLastISBNInElement(elementId) {
  18.         var element = document.getElementById(elementId);
  19.         if (element) {
  20.             var isbnPattern = /(\d{0,3}-?\d{1,5}-?\d{1,7}-?\d{1,7}-?[\dX])/g; // Pattern to match ISBN
  21.             var matches = element.innerText.match(isbnPattern);
  22.             if (matches && matches.length > 0) {
  23.                 var lastIsbn = matches[matches.length - 1];
  24.                 console.log('ISBN on douban:', lastIsbn);
  25.                 return lastIsbn;
  26.             } else {
  27.                 console.log('ISBN not found');
  28.                 return null;
  29.             }
  30.         } else {
  31.             console.log('Element with ID ' + elementId + ' not found');
  32.             return null;
  33.         }
  34.     }
  35.  
  36.     // Function to check the ISBN by forming a URL and loading it
  37.     function checkISBN(isbn) {
  38.         if (isbn) {
  39.             var baseUrl = 'https://opac.zju.edu.cn/F/Q84DGEB5U3IFM7NN9FLYXVXPJHUL6LSU4E8AYD81KQRRJ5LNRF-32238?find_base=ZJU01&find_base=ZJU09&func=find-m&find_code=ISB&request=';
  40.             var checkUrl = baseUrl + isbn.replace(/-/g, '') + '&local_base=ZJU01'; // Remove hyphens from ISBN
  41.  
  42.             GM_xmlhttpRequest({
  43.                 method: 'GET',
  44.                 url: checkUrl,
  45.                 onload: function(response) {
  46.                     // Check the status of the response
  47.                     if (response.status === 200) {
  48.                         console.log("OPAC webpage loaded successfully.");
  49.  
  50.                         // Success checking part
  51.                         var isbnRegex = /ISBN(?:-1[03])?:?\s*(\d{0,3}-?\d{1,5}-?\d{1,7}-?\d{1,7}-?[\dX])/g;
  52.                         var allIsbnMatches = response.responseText.match(isbnRegex);
  53.                         if (allIsbnMatches && allIsbnMatches.length > 0) {
  54.                             // Get the last ISBN from the matches
  55.                             var lastIsbn = allIsbnMatches[allIsbnMatches.length - 1];
  56.                             console.log("Last ISBN found: " + lastIsbn);
  57.                             // Append the checked URL to the 'info' part of Douban
  58.                             appendLinkToInfo(checkUrl);
  59.                         } else {
  60.                             console.log("No ISBN found on the OPAC page.");
  61.                         }
  62.                     } else {
  63.                         console.log("Failed to load the OPAC webpage. Status code: " + response.status);
  64.                     }
  65.                 },
  66.                 onerror: function(error) {
  67.                     console.log("Error loading the OPAC webpage:", error);
  68.                 }
  69.             });
  70.         } else {
  71.             console.log('No ISBN provided to check.');
  72.         }
  73.     }
  74.  
  75.  
  76.     // Function to append the checked URL to the 'info' part of Douban
  77.     function appendLinkToInfo(url) {
  78.         var infoElement = document.getElementById('info');
  79.         if (infoElement) {
  80.             var link = document.createElement('a');
  81.             var span = document.createElement('span');
  82.             span.className = 'pl';
  83.             span.textContent = '图书馆: ';
  84.             infoElement.appendChild(span);
  85.             link.href = url;
  86.             link.textContent = '馆藏链接';
  87.             infoElement.appendChild(link);
  88.         } else {
  89.             console.log('Info element not found on Douban page.');
  90.         }
  91.     }
  92.  
  93.     // Example usage
  94.     var lastIsbn = findLastISBNInElement('info');
  95.     checkISBN(lastIsbn);
  96. })();