<?php
#CMS - CMS Made Simple
#(c)2004-2008 by Ted Kulp (ted@cmsmadesimple.org)
#This project's homepage is: http://cmsmadesimple.sf.net
#
#This program is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 2 of the License, or
#(at your option) any later version.
#
#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.
#You should have received a copy of the GNU General Public License
#along with this program; if not, write to the Free Software
#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
function smarty_cms_function_googlepr($params, &$smarty) {
  $domain = $_SERVER['SERVER_NAME'];
  if (!empty($params['domain']))
    $domain = $params['domain'];
 
  define('GMAG', 0xE6359A60); 
 
  //unsigned shift right 
  function zeroFill($a, $b){
    $z = hexdec(80000000); 
    if ($z & $a){ 
      $a = ($a>>1); 
      $a &= (~$z); 
      $a |= 0x40000000; 
      $a = ($a>>($b-1)); 
    }else{ 
      $a = ($a>>$b); 
    }
    return $a; 
  } 
 
 
  function mix($a,$b,$c) { 
    $a -= $b; $a -= $c; $a ^= (zeroFill($c,13)); 
    $b -= $c; $b -= $a; $b ^= ($a<<8); 
    $c -= $a; $c -= $b; $c ^= (zeroFill($b,13)); 
    $a -= $b; $a -= $c; $a ^= (zeroFill($c,12)); 
    $b -= $c; $b -= $a; $b ^= ($a<<16); 
    $c -= $a; $c -= $b; $c ^= (zeroFill($b,5)); 
    $a -= $b; $a -= $c; $a ^= (zeroFill($c,3)); 
    $b -= $c; $b -= $a; $b ^= ($a<<10); 
    $c -= $a; $c -= $b; $c ^= (zeroFill($b,15)); 
 
    return array($a,$b,$c); 
  } 
 
  function GCH($url, $length=null, $init=GMAG) { 
    if(is_null($length))
      $length = sizeof($url); 
    $a = $b = 0x9E3779B9; 
    $c = $init; 
    $k = 0; 
    $len = $length; 
    while($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)); 
      $mix = mix($a,$b,$c); 
      $a = $mix[0]; $b = $mix[1]; $c = $mix[2]; 
      $k += 12; 
      $len -= 12; 
    } 
 
    $c += $length; 
    switch($len){ /* all the case statements fall through */ 
      case 11: $c+=($url[$k+10]<<24); 
      case 10: $c+=($url[$k+9]<<16); 
      case 9 : $c+=($url[$k+8]<<8); 
      /* the first byte of c is reserved for the length */ 
      case 8 : $b+=($url[$k+7]<<24); 
      case 7 : $b+=($url[$k+6]<<16); 
      case 6 : $b+=($url[$k+5]<<8); 
      case 5 : $b+=($url[$k+4]); 
      case 4 : $a+=($url[$k+3]<<24); 
      case 3 : $a+=($url[$k+2]<<16); 
      case 2 : $a+=($url[$k+1]<<8); 
      case 1 : $a+=($url[$k+0]); 
      /* case 0: nothing left to add */ 
    } 
    $mix = mix($a,$b,$c); 
    /*-------------------------------------------- report the result */ 
    return $mix[2]; 
  } 
 
    //converts a string into an array of integers containing the numeric value of the char 
  function strord($string) { 
    for($i=0;$i<strlen($string);$i++) { 
      $result[$i] = ord($string{$i}); 
    } 
    return $result; 
  } 
 
  function getPR($_url) { 
    $url = 'info:'.$_url; 
    $ch = GCH(strord($url)); 
    $url='info:'.urlencode($_url); 
    $pr = file("http://www.google.com/search?client=navclient-auto&ch=6$ch&ie=UTF-8&oe=UTF-8&features=Rank&q=$url"); 
    $pr_str = implode("", $pr); 
    return substr($pr_str,strrpos($pr_str, ":")+1); 
  } 
 
  return getPR($domain);
}
 
function smarty_cms_help_function_googlepr() {
  ?>
  <h3>What does this do?</h3>
  <p>Display's a number that represents your google pagerank.</p>
  <h3>How do I use it?</h3>
  <p>Just insert the tag into your template/page like: <code>{googlepr}</code><br>
  <br>
 
  <h3>What parameters does it take?</h3>
  <ul>
    <li><em>(optional)</em> domain - The website to display the pagerank for.</li>
  </ul>
  </p>
  <?php
}
 
function smarty_cms_about_function_googlepr() {
  ?>
  <p>Author: Brett Batie&lt;brett-cms@classicwebdevelopment.com&gt;</p>
  <p>Version: 1.0</p>
  <p>
  Change History:<br/>
  None
  </p>
  <?php
}
 
?>