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AutoPager for E-Hentai

Provides an AutoPager-like function for g.E-Hentai.org.

  1. // ==UserScript==
  2. // @name            AutoPager for E-Hentai
  3. // @description     Provides an AutoPager-like function for g.E-Hentai.org.
  4. // @grant           GM_xmlhttpRequest
  5. // @include         http://g.e-hentai.org/*
  6. // @include         http://exhentai.org/*
  7. // @version 0.0.1.20150802205409
  8. // @namespace https://greasyfork.org/users/2233
  9. // ==/UserScript==
  10.  
  11. /*** Settings ***/
  12.  
  13. var freq = [5, 10] // min seconds ~ max seconds
  14.  
  15. /*** End of Settings ***/
  16.  
  17. var wnd = window
  18. var doc = wnd.document
  19. var loc = location
  20. var href = loc.href
  21.  
  22. var $  = function(e, css) { if(!css) { css=e; e=doc }; return e.querySelector(css) }
  23. var $$ = function(e, css) { if(!css) { css=e; e=doc }; return e.querySelectorAll(css) }
  24.  
  25. if(((/^http:\/\/g\.e-hentai\.org\//.test(href)) || (/^http:\/\/exhentai\.org\//.test(href))) && (/\/[gs]\//.test(href))) {
  26.     var api_url = ''
  27.     if(/^http:\/\/g\.e-hentai\.org\//.test(href)) { api_url = 'http://g.e-hentai.org/api.php' }
  28.     else if(/^http:\/\/exhentai\.org\//.test(href)) { api_url = 'http://exhentai.org/api.php' }
  29.     if(!api_url) { throw 'exit' }
  30.  
  31.     // g: gid, gtoken; s: gid, gtoken, imgkey
  32.     var gid = gtoken = ''
  33.     if(/\/g\//.test(href)) {
  34.         //if(!/\??\bp=/.test(href)) { loc.assign(href + '?p=0') }
  35.         var m = /\/g\/([^\/]+)\/([^\/]+)/.exec(href)
  36.         if(m == null) { console.log('Invalid gallery.'); throw 'exit' }
  37.         gid = m[1], gtoken = m[2]
  38.     } else if(/\/s\//.test(href)) {
  39.         var m = /\/s\/([^\/]+)\/([^\/]+)-([0-9]+)/.exec(href)
  40.         if(m == null) { console.log('Invalid image page.'); throw 'exit' }
  41.         var imgkey = m[1], gid = m[2], page = m[3]
  42.         //if(imgkey.length > 10) { imgkey = imgkey.substring(0, 10) }
  43.         if(typeof GM_xmlhttpRequest != 'undefined') {
  44.             var xhr = GM_xmlhttpRequest({
  45.                 method: 'POST',
  46.                 url: api_url,
  47.                 data: JSON.stringify({'method':'gtoken', 'pagelist':[[gid, imgkey, page]]}),
  48.                 synchronous: true
  49.             })
  50.         }
  51.         else {
  52.             var xhr = new XMLHttpRequest()
  53.             xhr.open('POST', api_url, false)
  54.             xhr.send(JSON.stringify({'method':'gtoken', 'pagelist':[[gid, imgkey, page]]}))
  55.         }
  56.         console.log('xhr.responseText = ' + xhr.responseText)
  57.         gtoken = JSON.parse(xhr.responseText)['tokenlist'][0]['token']
  58.     }
  59.     console.log('gid = ' + gid + ', gtoken = ' + gtoken)
  60.     if(gid == '') { console.log('Cannot find gid.') }
  61.     if(gtoken == '') { console.log('Cannot find gtoken.') }
  62.     if((gid == '') || (gtoken == '')) { throw 'exit' }
  63.  
  64.     // g: filecount; s: filecount
  65.     var filecount = ''
  66.     if(typeof GM_xmlhttpRequest != 'undefined') {
  67.         var xhr = GM_xmlhttpRequest({
  68.             method: 'POST',
  69.             url: api_url,
  70.             data: JSON.stringify({'method':'gdata', 'gidlist':[[gid, gtoken]]}),
  71.             synchronous: true
  72.         })
  73.     }
  74.     else {
  75.         var xhr = new XMLHttpRequest()
  76.         xhr.open('POST', api_url, false)
  77.         xhr.send(JSON.stringify({'method':'gdata', 'gidlist':[[gid, gtoken]]}))
  78.     }
  79.     console.log('xhr.responseText = ' + xhr.responseText)
  80.     filecount = parseInt(JSON.parse(xhr.responseText)['gmetadata'][0]['filecount'])
  81.     console.log('filecount = ' + filecount)
  82.     if(isNaN(filecount)) { console.log('Cannot find filecount.'); throw 'exit' }
  83.  
  84.     // g: page_url, imgkey; s: page_url
  85.     if(/\/g\//.test(href)) {
  86.         var imgkey = page_url = ''
  87.         //var page = $$('.ip')[0].textContent.match(/\d+/)[0], page_url = ''
  88.         //var page = parseInt($('#gdt a').href.replace(/^.*-([0-9]+)/, '$1')), page_url = ''
  89.         var page = parseInt($('.gpc').textContent.match(/\d+/)[0])
  90.         console.log('page = ' + page)
  91.  
  92.         var lnks = $$('A[href*="/s/"]')
  93.         var url_pattern = new RegExp('/s/[^/]+/'+gid+'-'+page+'$')
  94.         for(var i=lnks.length-1; i>=0; i--) {
  95.             if(url_pattern.test(lnks[i].href)) {
  96.                 page_url = lnks[i].href
  97.                 imgkey = /\/s\/([^\/]+)/.exec(lnks[i].href)[1]
  98.                 //if(imgkey.length > 10) { imgkey = imgkey.substring(0, 10) }
  99.                 break
  100.             }
  101.         }
  102.     }
  103.     else if(/\/s\//.test(href)) { page_url = href.replace(/\?.*/, '') }
  104.     if((page_url == '') || (imgkey == '')) {
  105.         if(/\/g\//.test(href)) {
  106.             var mpv_url = ''
  107.             var lnks = $$('A[href*="/mpv/"]')
  108.             var url_pattern = new RegExp('/mpv/'+gid+'/[^/]+/#page'+page+'$')
  109.             for(var i=lnks.length-1; i>=0; i--) {
  110.                 if(url_pattern.test(lnks[i].href)) {
  111.                     mpv_url = lnks[i].href
  112.                     if(typeof GM_xmlhttpRequest != 'undefined') {
  113.                         var xhr = GM_xmlhttpRequest({
  114.                             method: 'GET',
  115.                             url: mpv_url,
  116.                             synchronous: true
  117.                         })
  118.                     }
  119.                     else {
  120.                         var xhr = new XMLHttpRequest()
  121.                         xhr.open('GET', mpv_url, false)
  122.                         xhr.send(null)
  123.                     }
  124.                     var pa = xhr.responseText.match(/var +imagelist *= *\[([^\]]+)\]/)[1].split('},').map(function(s) { return s + '}' })
  125.                     imgkey = JSON.parse(pa[page-1]).k
  126.                     page_url = loc.protocol + '//' + loc.hostname + '/s/' + imgkey + '/' + gid + '-' + page
  127.                     break
  128.                 }
  129.             }
  130.         }
  131.     }
  132.     console.log('page_url = ' + page_url + ', imgkey = ' + imgkey)
  133.     if(page_url == '') { console.log('Cannot find page_url.') }
  134.     if(imgkey == '') { console.log('Cannot find the first imgkey.') }
  135.     if((page_url == '') || (imgkey == '')) { throw 'exit' }
  136.  
  137.     // g: showkey; s: showkey
  138.     var showkey = ''
  139.     if(typeof GM_xmlhttpRequest != 'undefined') {
  140.         var xhr = GM_xmlhttpRequest({
  141.             method: 'GET',
  142.             url: page_url,
  143.             synchronous: true
  144.         })
  145.     }
  146.     else {
  147.         var xhr = new XMLHttpRequest()
  148.         xhr.open('GET', page_url, false)
  149.         xhr.send(null)
  150.     }
  151.     //console.log('xhr.responseText = ' + xhr.responseText)
  152.     try{ showkey = /\bshowkey=['"]?([-0-9a-z]+)/.exec(xhr.responseText)[1] } catch(e) { showkey = '' }
  153.     console.log('showkey = ' + showkey)
  154.     if(showkey == '') { console.log('Cannot find the first showkey.'); throw 'exit' }
  155.  
  156.     var get_rand = function(range) {
  157.         var min = range[0]
  158.         var max = range[1]
  159.         return Math.floor(Math.random() * (max - min + 1)) + min
  160.     }
  161.  
  162.     var b = doc.body
  163.     var append_img = function() {
  164.         if(typeof GM_xmlhttpRequest != 'undefined') {
  165.             GM_xmlhttpRequest({
  166.                 method: 'POST',
  167.                 url: api_url,
  168.                 data: JSON.stringify({'method':'showpage', 'gid':gid, 'page':page, 'imgkey':imgkey, 'showkey':showkey}),
  169.                 onload: function(response) {
  170.                     var res = JSON.parse(response.responseText)
  171.                     var i3 = res['i3']
  172.                     var img_src = /src=['"]([^'"]+)['"]/.exec(i3)[1].replace(/&/g, '&')
  173.  
  174.                     var img = new Image()
  175.                     img.id = page
  176.                     img.onerror = function() { this.onerror = null; this.style.display = 'none' }
  177.                     img.src = img_src
  178.                     img.style.cssText = 'display: block; margin-left: auto; margin-right: auto'
  179.                     img.width = wnd.innerWidth
  180.                     var a = doc.createElement('A')
  181.                     a.href = page_url.replace(/\/s\/.*/, '/s/' + imgkey + '/' + gid + '-' + page)
  182.                     a.text = 'p. ' + page + ' / ' + filecount
  183.                     b.appendChild(a)
  184.                     b.appendChild(doc.createElement('BR'))
  185.                     b.appendChild(img)
  186.                     b.appendChild(doc.createElement('BR'))
  187.  
  188.                     if(page >= filecount) { return }
  189.                     var m = /\/s\/([^'"]+?)\/[^'"]+-([0-9]+)['"]/.exec(i3)
  190.                     if(m == null) { console.log('An error happened when parsing p. ' + page); return }
  191.                     imgkey = m[1]
  192.                     page = parseInt(m[2])
  193.                     setTimeout(append_img, get_rand(freq)*1000)
  194.                 }
  195.             })
  196.         }
  197.         else {
  198.             var xhr = new XMLHttpRequest()
  199.             xhr.onreadystatechange = function() {
  200.                 if(xhr.readyState == 4 && xhr.status == 200) {
  201.                     var res = JSON.parse(xhr.responseText)
  202.                     var i3 = res['i3']
  203.                     var img_src = /src=['"]([^'"]+)['"]/.exec(i3)[1].replace(/&/g, '&')
  204.  
  205.                     var img = new Image()
  206.                     img.id = page
  207.                     img.onerror = function() { this.onerror = null; this.style.display = 'none' }
  208.                     img.src = img_src
  209.                     img.style.cssText = 'display: block; margin-left: auto; margin-right: auto'
  210.                     img.width = wnd.innerWidth
  211.                     var a = doc.createElement('A')
  212.                     a.href = page_url.replace(/\/s\/.*/, '/s/' + imgkey + '/' + gid + '-' + page)
  213.                     a.text = 'p. ' + page + ' / ' + filecount
  214.                     b.appendChild(a)
  215.                     b.appendChild(doc.createElement('BR'))
  216.                     b.appendChild(img)
  217.                     b.appendChild(doc.createElement('BR'))
  218.  
  219.                     if(page >= filecount) { return }
  220.                     var m = /\/s\/([^'"]+?)\/[^'"]+-([0-9]+)['"]/.exec(i3)
  221.                     if(m == null) { console.log('An error happened when parsing p. ' + page); return }
  222.                     imgkey = m[1]
  223.                     page = parseInt(m[2])
  224.                     setTimeout(append_img, get_rand(freq)*1000)
  225.                 }
  226.             }
  227.             xhr.open('POST', api_url, true)
  228.             xhr.send(JSON.stringify({'method':'showpage', 'gid':gid, 'page':page, 'imgkey':imgkey, 'showkey':showkey}))
  229.         }
  230.     }
  231.     append_img()
  232. }