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<?php
/*
* $Id: Utf8.php 10831 2013-05-29 19:32:17Z btowles $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.doctrine-project.org>.
*/
/**
* Doctrine_Search_Analyzer_Utf8
*
* This class is used to analyze (ie tokenize) an input $text in
* $encoding encoding, and return an array of words to be indexed.
*
* @package Doctrine
* @subpackage Search
* @author Brice Figureau <brice+doctrine@daysofwonder.com>
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @version $Revision$
* @link www.doctrine-project.org
* @since 1.0
*/
class Doctrine_Search_Analyzer_Utf8 extends Doctrine_Search_Analyzer_Standard
{
public function analyze($text, $encoding = null)
{
if (is_null($encoding)) {
$encoding = isset($this->_options['encoding']) ? $this->_options['encoding']:'utf-8';
}
// check that $text encoding is utf-8, if not convert it
if (strcasecmp($encoding, 'utf-8') != 0 && strcasecmp($encoding, 'utf8') != 0) {
$text = iconv($encoding, 'UTF-8', $text);
}
$text = preg_replace('/[^\p{L}\p{N}]+/u', ' ', $text);
$text = str_replace(' ', ' ', $text);
$terms = explode(' ', $text);
$ret = array();
if ( ! empty($terms)) {
foreach ($terms as $i => $term) {
if (empty($term)) {
continue;
}
$lower = mb_strtolower(trim($term), 'UTF-8');
if (in_array($lower, self::$_stopwords)) {
continue;
}
$ret[$i] = $lower;
}
}
return $ret;
}
}