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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to version 1.0 of the Zend Framework
* license, that is bundled with this package in the file LICENSE, and
* is available through the world-wide-web at the following URL:
* http://www.zend.com/license/framework/1_0.txt. If you did not receive
* a copy of the Zend Framework license and are unable to obtain it
* through the world-wide-web, please send a note to license@zend.com
* so we can mail you a copy immediately.
*
* @package Zend_Search_Lucene
* @subpackage Analysis
* @copyright Copyright (c) 2005-2006 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://www.zend.com/license/framework/1_0.txt Zend Framework License version 1.0
*/
/** Zend_Search_Lucene_Analysis_Analyzer_Common */
require_once 'Zend/Search/Lucene/Analysis/Analyzer/Common.php';
/**
* @package Zend_Search_Lucene
* @subpackage Analysis
* @copyright Copyright (c) 2005-2006 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://www.zend.com/license/framework/1_0.txt Zend Framework License version 1.0
*/
class Zend_Search_Lucene_Analysis_Analyzer_Common_Text extends Zend_Search_Lucene_Analysis_Analyzer_Common
{
/**
* Tokenize text to a terms
* Returns array of Zend_Search_Lucene_Analysis_Token objects
*
* @param string $data
* @return array
*/
public function tokenize($data)
{
$tokenStream = array();
$position = 0;
while ($position < strlen($data)) {
// skip white space
while ($position < strlen($data) && !ctype_alpha( $data{$position} )) {
$position++;
}
$termStartPosition = $position;
// read token
while ($position < strlen($data) && ctype_alpha( $data{$position} )) {
$position++;
}
// Empty token, end of stream.
if ($position == $termStartPosition) {
break;
}
$token = new Zend_Search_Lucene_Analysis_Token(substr($data,
$termStartPosition,
$position-$termStartPosition),
$termStartPosition,
$position);
$tokenStream[] = $this->normalize($token);
}
return $tokenStream;
}
}
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