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   1  <?php
   2  /**

   3   * $Id: editor_plugin_src.js 201 2007-02-12 15:56:56Z spocke $

   4   *

   5   * @package MCManager.includes

   6   * @author Moxiecode

   7   * @copyright Copyright � 2004-2007, Moxiecode Systems AB, All rights reserved.

   8   */
   9  
  10  class GoogleSpell extends SpellChecker {
  11      /**

  12       * Spellchecks an array of words.

  13       *

  14       * @param {String} $lang Language code like sv or en.

  15       * @param {Array} $words Array of words to spellcheck.

  16       * @return {Array} Array of misspelled words.

  17       */
  18      function &checkWords($lang, $words) {
  19          $wordstr = implode(' ', $words);
  20          $matches = $this->_getMatches($lang, $wordstr);
  21          $words = array();
  22  
  23          for ($i=0; $i<count($matches); $i++)
  24              $words[] = $this->_unhtmlentities(mb_substr($wordstr, $matches[$i][1], $matches[$i][2], "UTF-8"));
  25  
  26          return $words;
  27      }
  28  
  29      /**

  30       * Returns suggestions of for a specific word.

  31       *

  32       * @param {String} $lang Language code like sv or en.

  33       * @param {String} $word Specific word to get suggestions for.

  34       * @return {Array} Array of suggestions for the specified word.

  35       */
  36      function &getSuggestions($lang, $word) {
  37          $sug = array();
  38          $osug = array();
  39          $matches = $this->_getMatches($lang, $word);
  40  
  41          if (count($matches) > 0)
  42              $sug = explode("\t", $this->_unhtmlentities($matches[0][4]));
  43  
  44          // Remove empty

  45          foreach ($sug as $item) {
  46              if ($item)
  47                  $osug[] = $item;
  48          }
  49  
  50          return $osug;
  51      }
  52  
  53      function &_getMatches($lang, $str) {
  54          $lang = preg_replace('/[^a-z\-]/i', '', $lang); // Sanitize, remove everything but a-z or -

  55          $str = preg_replace('/[\x00-\x1F\x7F]/', '', $str); // Sanitize, remove all control characters

  56          $server = "www.google.com";
  57          $port = 443;
  58          $path = "/tbproxy/spell?lang=" . $lang . "&hl=en";
  59          $host = "www.google.com";
  60          $url = "https://" . $server;
  61  
  62          // Setup XML request

  63          $xml = '<?xml version="1.0" encoding="utf-8" ?><spellrequest textalreadyclipped="0" ignoredups="0" ignoredigits="1" ignoreallcaps="1"><text>' . $str . '</text></spellrequest>';
  64  
  65          $header  = "POST ".$path." HTTP/1.0 \r\n";
  66          $header .= "MIME-Version: 1.0 \r\n";
  67          $header .= "Content-type: application/PTI26 \r\n";
  68          $header .= "Content-length: ".strlen($xml)." \r\n";
  69          $header .= "Content-transfer-encoding: text \r\n";
  70          $header .= "Request-number: 1 \r\n";
  71          $header .= "Document-type: Request \r\n";
  72          $header .= "Interface-Version: Test 1.4 \r\n";
  73          $header .= "Connection: close \r\n\r\n";
  74          $header .= $xml;
  75  
  76          // Use curl if it exists

  77          if (function_exists('curl_init')) {
  78              // Use curl

  79              $ch = curl_init();
  80              curl_setopt($ch, CURLOPT_URL,$url);
  81              curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  82              curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $header);
  83              curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
  84              if (!empty($this->_config['GoogleSpell.proxyhost'])) {
  85                  if (!empty($this->_config['GoogleSpell.proxytype']) and ($this->_config['GoogleSpell.proxytype'] === 'SOCKS5')) {
  86                      curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
  87                  } else {
  88                      curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_HTML);
  89                      curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, FALSE);
  90                  }
  91                  if (empty($this->_config['GoogleSpell.proxyport'])) {
  92                      curl_setopt($ch, CURLOPT_PROXY, $this->_config['GoogleSpell.proxyhost']);
  93                  } else {
  94                      curl_setopt($ch, CURLOPT_PROXY, $this->_config['GoogleSpell.proxyhost'].':'.$this->_config['GoogleSpell.proxyport']);
  95                  }
  96                  if (!empty($this->_config['GoogleSpell.proxyuser']) and !empty($this->_config['GoogleSpell.proxypassword'])) {
  97                      curl_setopt($ch, CURLOPT_PROXYUSERPWD, $this->_config['GoogleSpell.proxyuser'].':'.$this->_config['GoogleSpell.proxypassword']);
  98                      if (defined('CURLOPT_PROXYAUTH')) {
  99                          // any proxy authentication if PHP 5.1

 100                          curl_setopt($ch, CURLOPT_PROXYAUTH, CURLAUTH_BASIC | CURLAUTH_NTLM);
 101                      }
 102                  }
 103              }
 104              $xml = curl_exec($ch);
 105              curl_close($ch);
 106          } else {
 107              // Use raw sockets

 108              $fp = fsockopen("ssl://" . $server, $port, $errno, $errstr, 30);
 109              if ($fp) {
 110                  // Send request

 111                  fwrite($fp, $header);
 112  
 113                  // Read response

 114                  $xml = "";
 115                  while (!feof($fp))
 116                      $xml .= fgets($fp, 128);
 117  
 118                  fclose($fp);
 119              } else
 120                  echo "Could not open SSL connection to google.";
 121          }
 122  
 123          // Grab and parse content

 124          $matches = array();
 125          preg_match_all('/<c o="([^"]*)" l="([^"]*)" s="([^"]*)">([^<]*)<\/c>/', $xml, $matches, PREG_SET_ORDER);
 126  
 127          return $matches;
 128      }
 129  
 130  	function _unhtmlentities($string) {
 131          return core_text::entities_to_utf8($string); // Moodle hack

 132          $string = preg_replace('~&#x([0-9a-f]+);~ei', 'chr(hexdec("\\1"))', $string);
 133          $string = preg_replace('~&#([0-9]+);~e', 'chr(\\1)', $string);
 134  
 135          $trans_tbl = get_html_translation_table(HTML_ENTITIES);
 136          $trans_tbl = array_flip($trans_tbl);
 137  
 138          return strtr($string, $trans_tbl);
 139      }
 140  }
 141  
 142  // Patch in multibyte support

 143  if (!function_exists('mb_substr')) {
 144  	function mb_substr($str, $start, $len = '', $encoding="UTF-8"){
 145          $limit = strlen($str);
 146  
 147          for ($s = 0; $start > 0;--$start) {// found the real start
 148              if ($s >= $limit)
 149                  break;
 150  
 151              if ($str[$s] <= "\x7F")
 152                  ++$s;
 153              else {
 154                  ++$s; // skip length

 155  
 156                  while ($str[$s] >= "\x80" && $str[$s] <= "\xBF")
 157                      ++$s;
 158              }
 159          }
 160  
 161          if ($len == '')
 162              return substr($str, $s);
 163          else
 164              for ($e = $s; $len > 0; --$len) {//found the real end
 165                  if ($e >= $limit)
 166                      break;
 167  
 168                  if ($str[$e] <= "\x7F")
 169                      ++$e;
 170                  else {
 171                      ++$e;//skip length

 172  
 173                      while ($str[$e] >= "\x80" && $str[$e] <= "\xBF" && $e < $limit)
 174                          ++$e;
 175                  }
 176              }
 177  
 178          return substr($str, $s, $e - $s);
 179      }
 180  }
 181  
 182  ?>