File indexing completed on 2025-01-19 05:21:26

 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Search_Lucene
  * @subpackage Index
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 
 /**
  * A Term represents a word from text.  This is the unit of search.  It is
  * composed of two elements, the text of the word, as a string, and the name of
  * the field that the text occured in, an interned string.
  *
  * Note that terms may represent more than words from text fields, but also
  * things like dates, email addresses, urls, etc.
  *
  * @category   Zend
  * @package    Zend_Search_Lucene
  * @subpackage Index
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Search_Lucene_Index_Term
 {
     /**
      * Field name or field number (depending from context)
      *
      * @var mixed
      */
     public $field;
 
     /**
      * Term value
      *
      * @var string
      */
     public $text;
 
 
     /**
      * Object constructor
      */
     public function __construct($text, $field = null)
     {
         $this->field = ($field === null)?  Zend_Search_Lucene::getDefaultSearchField() : $field;
         $this->text  = $text;
     }
 
 
     /**
      * Returns term key
      *
      * @return string
      */
     public function key()
     {
         return $this->field . chr(0) . $this->text;
     }
 
     /**
      * Get term prefix
      *
      * @param string $str
      * @param integer $length
      * @return string
      */
     public static function getPrefix($str, $length)
     {
         $prefixBytes = 0;
         $prefixChars = 0;
         while ($prefixBytes < strlen($str)  &&  $prefixChars < $length) {
             $charBytes = 1;
             if ((ord($str[$prefixBytes]) & 0xC0) == 0xC0) {
                 $charBytes++;
                 if (ord($str[$prefixBytes]) & 0x20 ) {
                     $charBytes++;
                     if (ord($str[$prefixBytes]) & 0x10 ) {
                         $charBytes++;
                     }
                 }
             }
 
             if ($prefixBytes + $charBytes > strlen($str)) {
                 // wrong character
                 break;
             }
 
             $prefixChars++;
             $prefixBytes += $charBytes;
         }
 
         return substr($str, 0, $prefixBytes);
     }
 
     /**
      * Get UTF-8 string length
      *
      * @param string $str
      * @return string
      */
     public static function getLength($str)
     {
         $bytes = 0;
         $chars = 0;
         while ($bytes < strlen($str)) {
             $charBytes = 1;
             if ((ord($str[$bytes]) & 0xC0) == 0xC0) {
                 $charBytes++;
                 if (ord($str[$bytes]) & 0x20 ) {
                     $charBytes++;
                     if (ord($str[$bytes]) & 0x10 ) {
                         $charBytes++;
                     }
                 }
             }
 
             if ($bytes + $charBytes > strlen($str)) {
                 // wrong character
                 break;
             }
 
             $chars++;
             $bytes += $charBytes;
         }
 
         return $chars;
     }
 }