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using System; using System.Collections.Generic; using System.Text; using System.Web; using System.Net; using System.IO; namespace BLL {
/// <summary> /// GooglePR 的摘要说明 /// </summary> public class GooglePR { public static string GetPageRank(string strUrl) { string sURL = "http://toolbarqueries.google.com/search?client=navclient-auto&ch=" + GetPR(strUrl) + "&ie=UTF-8&oe=UTF-8&features=Rank&q=info:" + System.Web.HttpUtility.UrlEncode(strUrl); string result = Net.GetHtml(sURL); if (result != null) { result = result.Trim(); if (result.IndexOf(':') > 0) { string[] pr = result.Split(':'); if (pr.Length == 3) return pr[2].ToString(); } } return "0"; } private static string GetPR(string url) { url = "info:" + url; string ch = GoogleCH(str_asc(url)).ToString(); ch = "6" + ch; return ch; }
private static int[] str_asc(string str) { if (str == null || str == string.Empty) return null; int[] result = new int[str.Length];
for (int i = 0; i < str.Length; i++) { result[i] = (int)str[i]; }
return result; }
private static long yiweitwo(long a, long b) { long z = 0x80000000;
if ((z & a) != 0) { a = (a >> 1); a &= (~z); a |= 0x40000000; a = ((int)a >> (int)(b - 1)); } else { a = ((int)a >> (int)b); } return a; }
private static int[] yiwei(long a, long b, long c) { a -= b; a -= c; a ^= (yiweitwo(c, 13)); b -= c; b -= a; b ^= (a << 8); c -= a; c -= b; c ^= (yiweitwo(b, 13)); a -= b; a -= c; a ^= (yiweitwo(c, 12)); b -= c; b -= a; b ^= (a << 16); c -= a; c -= b; c ^= (yiweitwo(b, 5)); a -= b; a -= c; a ^= (yiweitwo(c, 3)); b -= c; b -= a; b ^= (a << 10); c -= a; c -= b; c ^= (yiweitwo(b, 15));
return new int[] { (int)a, (int)b, (int)c }; }
private static int GoogleCH(int[] url) { int length = url.Length;
long a = 0x9E3779B9; long b = 0x9E3779B9; long c = 0xE6359A60; int k = 0; int len = length; int[] mid; while (len >= 12) { a += (url[k + 0] + (url[k + 1] << 8) + (url[k + 2] << 16) + (url[k + 3] << 24)); b += (url[k + 4] + (url[k + 5] << 8) + (url[k + 6] << 16) + (url[k + 7] << 24)); c += (url[k + 8] + (url[k + 9] << 8) + (url[k + 10] << 16) + (url[k + 11] << 24)); mid = yiwei(a, b, c); a = mid[0]; b = mid[1]; c = mid[2]; k += 12; len -= 12; }
c += length; switch (len) { case 11: { c += (url[k + 10] << 24); c += (url[k + 9] << 16); c += (url[k + 8] << 8); b += (url[k + 7] << 24); b += (url[k + 6] << 16); b += (url[k + 5] << 8); b += (url[k + 4]); a += (url[k + 3] << 24); a += (url[k + 2] << 16); a += (url[k + 1] << 8); a += (url[k + 0]); break; } case 10: { c += (url[k + 9] << 16); c += (url[k + 8] << 8); b += (url[k + 7] << 24); b += (url[k + 6] << 16); b += (url[k + 5] << 8); b += (url[k + 4]); a += (url[k + 3] << 24); a += (url[k + 2] << 16); a += (url[k + 1] << 8); a += (url[k + 0]); break; } case 9: { c += (url[k + 8] << 8); b += (url[k + 7] << 24); b += (url[k + 6] << 16); b += (url[k + 5] << 8); b += (url[k + 4]); a += (url[k + 3] << 24); a += (url[k + 2] << 16); a += (url[k + 1] << 8); a += (url[k + 0]); break; } case 8: { b += (url[k + 7] << 24); b += (url[k + 6] << 16); b += (url[k + 5] << 8); b += (url[k + 4]); a += (url[k + 3] << 24); a += (url[k + 2] << 16); a += (url[k + 1] << 8); a += (url[k + 0]); break; } case 7: { b += (url[k + 6] << 16); b += (url[k + 5] << 8); b += (url[k + 4]); a += (url[k + 3] << 24); a += (url[k + 2] << 16); a += (url[k + 1] << 8); a += (url[k + 0]); break; } case 6: { b += (url[k + 5] << 8); b += (url[k + 4]); a += (url[k + 3] << 24); a += (url[k + 2] << 16); a += (url[k + 1] << 8); a += (url[k + 0]); break; } case 5: { b += (url[k + 4]); a += (url[k + 3] << 24); a += (url[k + 2] << 16); a += (url[k + 1] << 8); a += (url[k + 0]); break; } case 4: { a += (url[k + 3] << 24); a += (url[k + 2] << 16); a += (url[k + 1] << 8); a += (url[k + 0]); break; } case 3: { a += (url[k + 2] << 16); a += (url[k + 1] << 8); a += (url[k + 0]); break; } case 2: { a += (url[k + 1] << 8); a += (url[k + 0]); break; } case 1: { a += (url[k + 0]); break; } } mid = yiwei(a, b, c); return mid[2]; } } } 友情链接:网址大全 网址导航 网址导航大全 最好的网址导航大全 易品商城 赛博汇通 中国最好的网址导航站 505笑话大全 2345网址导航大全 qq表情大全 |
