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<?php
/**
* @package Joomla.Administrator
* @subpackage com_finder
*
* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('_JEXEC') or die;
JLoader::register('FinderIndexerStemmer', dirname(__DIR__) . '/stemmer.php');
/**
* French stemmer class for Smart Search indexer.
*
* First contributed by Eric Sanou (bobotche@hotmail.fr)
* This class is inspired in Alexis Ulrich's French stemmer code (http://alx2002.free.fr)
*
* @package Joomla.Administrator
* @subpackage com_finder
* @since 3.0
*/
class FinderIndexerStemmerFr extends FinderIndexerStemmer
{
/**
* Stemming rules.
*
* @var array
* @since 3.0
*/
private static $_stemRules = null;
/**
* Method to stem a token and return the root.
*
* @param string $token The token to stem.
* @param string $lang The language of the token.
*
* @return string The root token.
*
* @since 3.0
*/
public function stem($token, $lang)
{
// Check if the token is long enough to merit stemming.
if (strlen($token) <= 2)
{
return $token;
}
// Check if the language is French or All.
if ($lang !== 'fr' && $lang != '*')
{
return $token;
}
// Stem the token if it is not in the cache.
if (!isset($this->cache[$lang][$token]))
{
// Stem the token.
$result = static::_getStem($token);
// Add the token to the cache.
$this->cache[$lang][$token] = $result;
}
return $this->cache[$lang][$token];
}
/**
* French stemmer rules variables.
*
* @return array The rules
*
* @since 3.0
*/
protected static function getStemRules()
{
if (static::$_stemRules)
{
return static::$_stemRules;
}
$vars = array();
// French accented letters in ISO-8859-1 encoding
$vars['accents'] = chr(224) . chr(226) . chr(232) . chr(233) . chr(234) . chr(235) . chr(238) . chr(239) . chr(244) . chr(251) . chr(249) . chr(231);
// The rule patterns include all accented words for french language
$vars['rule_pattern'] = "/^([a-z" . $vars['accents'] . "]*)(\*){0,1}(\d)([a-z" . $vars['accents'] . "]*)([.|>])/";
// French vowels (including y) in ISO-8859-1 encoding
$vars['vowels'] = chr(97) . chr(224) . chr(226) . chr(101) . chr(232) . chr(233) . chr(234) . chr(235) . chr(105) . chr(238) . chr(239) . chr(111) . chr(244) . chr(117) . chr(251) . chr(249) . chr(121);
// The French rules in ISO-8859-1 encoding
$vars['rules'] = array(
'esre1>', 'esio1>', 'siol1.', 'siof0.', 'sioe0.', 'sio3>', 'st1>', 'sf1>', 'sle1>', 'slo1>', 's' . chr(233) . '1>', chr(233) . 'tuae5.',
chr(233) . 'tuae2.', 'tnia0.', 'tniv1.', 'tni3>', 'suor1.', 'suo0.', 'sdrail5.', 'sdrai4.', 'er' . chr(232) . 'i1>', 'sesue3x>',
'esuey5i.', 'esue2x>', 'se1>', 'er' . chr(232) . 'g3.', 'eca1>', 'esiah0.', 'esi1>', 'siss2.', 'sir2>', 'sit2>', 'egan' . chr(233) . '1.',
'egalli6>', 'egass1.', 'egas0.', 'egat3.', 'ega3>', 'ette4>', 'ett2>', 'etio1.', 'tio' . chr(231) . '4c.', 'tio0.', 'et1>', 'eb1>',
'snia1>', 'eniatnau8>', 'eniatn4.', 'enia1>', 'niatnio3.', 'niatg3.', 'e' . chr(233) . '1>', chr(233) . 'hcat1.', chr(233) . 'hca4.',
chr(233) . 'tila5>', chr(233) . 'tici5.', chr(233) . 'tir1.', chr(233) . 'ti3>', chr(233) . 'gan1.', chr(233) . 'ga3>',
chr(233) . 'tehc1.', chr(233) . 'te3>', chr(233) . 'it0.', chr(233) . '1>', 'eire4.', 'eirue5.', 'eio1.', 'eia1.', 'ei1>', 'eng1.',
'xuaessi7.', 'xuae1>', 'uaes0.', 'uae3.', 'xuave2l.', 'xuav2li>', 'xua3la>', 'ela1>', 'lart2.', 'lani2>', 'la' . chr(233) . '2>',
'siay4i.', 'siassia7.', 'siarv1*.', 'sia1>', 'tneiayo6i.', 'tneiay6i.', 'tneiassia9.', 'tneiareio7.', 'tneia5>', 'tneia4>', 'tiario4.',
'tiarim3.', 'tiaria3.', 'tiaris3.', 'tiari5.', 'tiarve6>', 'tiare5>', 'iare4>', 'are3>', 'tiay4i.', 'tia3>', 'tnay4i.',
'em' . chr(232) . 'iu5>', 'em' . chr(232) . 'i4>', 'tnaun3.', 'tnauqo3.', 'tnau4>', 'tnaf0.', 'tnat' . chr(233) . '2>', 'tna3>', 'tno3>',
'zeiy4i.', 'zey3i.', 'zeire5>', 'zeird4.', 'zeirio4.', 'ze2>', 'ssiab0.', 'ssia4.', 'ssi3.', 'tnemma6>', 'tnemesuey9i.', 'tnemesue8>',
'tnemevi7.', 'tnemessia5.', 'tnemessi8.', 'tneme5>', 'tnemia4.', 'tnem' . chr(233) . '5>', 'el2l>', 'lle3le>', 'let' . chr(244) . '0.',
'lepp0.', 'le2>', 'srei1>', 'reit3.', 'reila2.', 'rei3>', 'ert' . chr(226) . 'e5.', 'ert' . chr(226) . chr(233) . '1.',
'ert' . chr(226) . '4.', 'drai4.', 'erdro0.', 'erute5.', 'ruta0.', 'eruta1.', 'erutiov1.', 'erub3.', 'eruh3.', 'erul3.', 'er2r>', 'nn1>',
'r' . chr(232) . 'i3.', 'srev0.', 'sr1>', 'rid2>', 're2>', 'xuei4.', 'esuei5.', 'lbati3.', 'lba3>', 'rueis0.', 'ruehcn4.', 'ecirta6.',
'ruetai6.', 'rueta5.', 'rueir0.', 'rue3>', 'esseti6.', 'essere6>', 'esserd1.', 'esse4>', 'essiab1.', 'essia5.', 'essio1.', 'essi4.',
'essal4.', 'essa1>', 'ssab1.', 'essurp1.', 'essu4.', 'essi1.', 'ssor1.', 'essor2.', 'esso1>', 'ess2>', 'tio3.', 'r' . chr(232) . 's2re.',
'r' . chr(232) . '0e.', 'esn1.', 'eu1>', 'sua0.', 'su1>', 'utt1>', 'tu' . chr(231) . '3c.', 'u' . chr(231) . '2c.', 'ur1.', 'ehcn2>',
'ehcu1>', 'snorr3.', 'snoru3.', 'snorua3.', 'snorv3.', 'snorio4.', 'snori5.', 'snore5>', 'snortt4>', 'snort' . chr(238) . 'a7.', 'snort3.',
'snor4.', 'snossi6.', 'snoire6.', 'snoird5.', 'snoitai7.', 'snoita6.', 'snoits1>', 'noits0.', 'snoi4>', 'noitaci7>', 'noitai6.', 'noita5.',
'noitu4.', 'noi3>', 'snoya0.', 'snoy4i.', 'sno' . chr(231) . 'a1.', 'sno' . chr(231) . 'r1.', 'snoe4.', 'snosiar1>', 'snola1.', 'sno3>',
'sno1>', 'noll2.', 'tnennei4.', 'ennei2>', 'snei1>', 'sne' . chr(233) . '1>', 'enne' . chr(233) . '5e.', 'ne' . chr(233) . '3e.', 'neic0.',
'neiv0.', 'nei3.', 'sc1.', 'sd1.', 'sg1.', 'sni1.', 'tiu0.', 'ti2.', 'sp1>', 'sna1>', 'sue1.', 'enn2>', 'nong2.', 'noss2.', 'rioe4.',
'riot0.', 'riorc1.', 'riovec5.', 'rio3.', 'ric2.', 'ril2.', 'tnerim3.', 'tneris3>', 'tneri5.', 't' . chr(238) . 'a3.', 'riss2.',
't' . chr(238) . '2.', 't' . chr(226) . '2>', 'ario2.', 'arim1.', 'ara1.', 'aris1.', 'ari3.', 'art1>', 'ardn2.', 'arr1.', 'arua1.',
'aro1.', 'arv1.', 'aru1.', 'ar2.', 'rd1.', 'ud1.', 'ul1.', 'ini1.', 'rin2.', 'tnessiab3.', 'tnessia7.', 'tnessi6.', 'tnessni4.', 'sini2.',
'sl1.', 'iard3.', 'iario3.', 'ia2>', 'io0.', 'iule2.', 'i1>', 'sid2.', 'sic2.', 'esoi4.', 'ed1.', 'ai2>', 'a1>', 'adr1.',
'tner' . chr(232) . '5>', 'evir1.', 'evio4>', 'evi3.', 'fita4.', 'fi2>', 'enie1.', 'sare4>', 'sari4>', 'sard3.', 'sart2>', 'sa2.',
'tnessa6>', 'tnessu6>', 'tnegna3.', 'tnegi3.', 'tneg0.', 'tneru5>', 'tnemg0.', 'tnerni4.', 'tneiv1.', 'tne3>', 'une1.', 'en1>', 'nitn2.',
'ecnay5i.', 'ecnal1.', 'ecna4.', 'ec1>', 'nn1.', 'rit2>', 'rut2>', 'rud2.', 'ugn1>', 'eg1>', 'tuo0.', 'tul2>', 't' . chr(251) . '2>',
'ev1>', 'v' . chr(232) . '2ve>', 'rtt1>', 'emissi6.', 'em1.', 'ehc1.', 'c' . chr(233) . 'i2c' . chr(232) . '.', 'libi2l.', 'llie1.',
'liei4i.', 'xuev1.', 'xuey4i.', 'xueni5>', 'xuell4.', 'xuere5.', 'xue3>', 'rb' . chr(233) . '3rb' . chr(232) . '.', 'tur2.',
'rir' . chr(233) . '4re.', 'rir2.', 'c' . chr(226) . '2ca.', 'snu1.', 'rt' . chr(238) . 'a4.', 'long2.', 'vec2.', chr(231) . '1c>',
'ssilp3.', 'silp2.', 't' . chr(232) . 'hc2te.', 'n' . chr(232) . 'm2ne.', 'llepp1.', 'tan2.', 'rv' . chr(232) . '3rve.',
'rv' . chr(233) . '3rve.', 'r' . chr(232) . '2re.', 'r' . chr(233) . '2re.', 't' . chr(232) . '2te.', 't' . chr(233) . '2te.', 'epp1.',
'eya2i.', 'ya1i.', 'yo1i.', 'esu1.', 'ugi1.', 'tt1.', 'end0.'
);
static::$_stemRules = $vars;
return static::$_stemRules;
}
/**
* Returns the number of the first rule from the rule number
* that can be applied to the given reversed input.
* returns -1 if no rule can be applied, ie the stem has been found
*
* @param string $reversed_input The input to check in reversed order
* @param integer $rule_number The rule number to check
*
* @return integer Number of the first rule
*
* @since 3.0
*/
private static function _getFirstRule($reversed_input, $rule_number)
{
$vars = static::getStemRules();
$nb_rules = count($vars['rules']);
for ($i = $rule_number; $i < $nb_rules; $i++)
{
// Gets the letters from the current rule
$rule = $vars['rules'][$i];
$rule = preg_replace($vars['rule_pattern'], "\\1", $rule);
if (strncasecmp(utf8_decode($rule), $reversed_input, strlen(utf8_decode($rule))) == 0)
{
return $i;
}
}
return -1;
}
/**
* Check the acceptability of a stem for French language
*
* @param string $reversed_stem The stem to check in reverse form
*
* @return boolean True if stem is acceptable
*
* @since 3.0
*/
private static function _check($reversed_stem)
{
$vars = static::getStemRules();
if (preg_match('/[' . $vars['vowels'] . ']$/', utf8_encode($reversed_stem)))
{
// If the form starts with a vowel then at least two letters must remain after stemming (e.g.: "etaient" --> "et")
return (strlen($reversed_stem) > 2);
}
else
{
// If the reversed stem starts with a consonant then at least two letters must remain after stemming
if (strlen($reversed_stem) <= 2)
{
return false;
}
// And at least one of these must be a vowel or "y"
return (preg_match('/[' . $vars['vowels'] . ']/', utf8_encode($reversed_stem)));
}
}
/**
* Paice/Husk stemmer which returns a stem for the given $input
*
* @param string $input The word for which we want the stem in UTF-8
*
* @return string The stem
*
* @since 3.0
*/
private static function _getStem($input)
{
$vars = static::getStemRules();
$intact = true;
$reversed_input = strrev(utf8_decode($input));
$rule_number = 0;
// This loop goes through the rules' array until it finds an ending one (ending by '.') or the last one ('end0.')
while (true)
{
$rule_number = static::_getFirstRule($reversed_input, $rule_number);
if ($rule_number == -1)
{
// No other rule can be applied => the stem has been found
break;
}
$rule = $vars['rules'][$rule_number];
preg_match($vars['rule_pattern'], $rule, $matches);
if (($matches[2] != '*') || ($intact))
{
$reversed_stem = utf8_decode($matches[4]) . substr($reversed_input, $matches[3], strlen($reversed_input) - $matches[3]);
if (self::_check($reversed_stem))
{
$reversed_input = $reversed_stem;
if ($matches[5] == '.')
{
break;
}
}
else
{
// Go to another rule
$rule_number++;
}
}
else
{
// Go to another rule
$rule_number++;
}
}
return utf8_encode(strrev($reversed_input));
}
}

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<!DOCTYPE html><title></title>

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<?php
/**
* @package Joomla.Administrator
* @subpackage com_finder
*
* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('_JEXEC') or die;
JLoader::register('FinderIndexerStemmer', dirname(__DIR__) . '/stemmer.php');
/**
* Porter English stemmer class for the Finder indexer package.
*
* This class was adapted from one written by Richard Heyes.
* See copyright and link information above.
*
* @package Joomla.Administrator
* @subpackage com_finder
* @since 2.5
*/
class FinderIndexerStemmerPorter_En extends FinderIndexerStemmer
{
/**
* Regex for matching a consonant.
*
* @var string
* @since 2.5
*/
private static $_regex_consonant = '(?:[bcdfghjklmnpqrstvwxz]|(?<=[aeiou])y|^y)';
/**
* Regex for matching a vowel
*
* @var string
* @since 2.5
*/
private static $_regex_vowel = '(?:[aeiou]|(?<![aeiou])y)';
/**
* Method to stem a token and return the root.
*
* @param string $token The token to stem.
* @param string $lang The language of the token.
*
* @return string The root token.
*
* @since 2.5
*/
public function stem($token, $lang)
{
// Check if the token is long enough to merit stemming.
if (strlen($token) <= 2)
{
return $token;
}
// Check if the language is English or All.
if ($lang !== 'en' && $lang != '*')
{
return $token;
}
// Stem the token if it is not in the cache.
if (!isset($this->cache[$lang][$token]))
{
// Stem the token.
$result = $token;
$result = self::_step1ab($result);
$result = self::_step1c($result);
$result = self::_step2($result);
$result = self::_step3($result);
$result = self::_step4($result);
$result = self::_step5($result);
// Add the token to the cache.
$this->cache[$lang][$token] = $result;
}
return $this->cache[$lang][$token];
}
/**
* Step 1
*
* @param string $word The token to stem.
*
* @return string
*
* @since 2.5
*/
private static function _step1ab($word)
{
// Part a
if (substr($word, -1) == 's')
{
self::_replace($word, 'sses', 'ss')
or self::_replace($word, 'ies', 'i')
or self::_replace($word, 'ss', 'ss')
or self::_replace($word, 's', '');
}
// Part b
if (substr($word, -2, 1) != 'e' or !self::_replace($word, 'eed', 'ee', 0))
{
// First rule
$v = self::$_regex_vowel;
// Words ending with ing and ed
// Note use of && and OR, for precedence reasons
if (preg_match("#$v+#", substr($word, 0, -3)) && self::_replace($word, 'ing', '')
or preg_match("#$v+#", substr($word, 0, -2)) && self::_replace($word, 'ed', ''))
{
// If one of above two test successful
if (!self::_replace($word, 'at', 'ate') and !self::_replace($word, 'bl', 'ble') and !self::_replace($word, 'iz', 'ize'))
{
// Double consonant ending
if (self::_doubleConsonant($word) and substr($word, -2) != 'll' and substr($word, -2) != 'ss' and substr($word, -2) != 'zz')
{
$word = substr($word, 0, -1);
}
elseif (self::_m($word) == 1 and self::_cvc($word))
{
$word .= 'e';
}
}
}
}
return $word;
}
/**
* Step 1c
*
* @param string $word The token to stem.
*
* @return string
*
* @since 2.5
*/
private static function _step1c($word)
{
$v = self::$_regex_vowel;
if (substr($word, -1) == 'y' && preg_match("#$v+#", substr($word, 0, -1)))
{
self::_replace($word, 'y', 'i');
}
return $word;
}
/**
* Step 2
*
* @param string $word The token to stem.
*
* @return string
*
* @since 2.5
*/
private static function _step2($word)
{
switch (substr($word, -2, 1))
{
case 'a':
self::_replace($word, 'ational', 'ate', 0)
or self::_replace($word, 'tional', 'tion', 0);
break;
case 'c':
self::_replace($word, 'enci', 'ence', 0)
or self::_replace($word, 'anci', 'ance', 0);
break;
case 'e':
self::_replace($word, 'izer', 'ize', 0);
break;
case 'g':
self::_replace($word, 'logi', 'log', 0);
break;
case 'l':
self::_replace($word, 'entli', 'ent', 0)
or self::_replace($word, 'ousli', 'ous', 0)
or self::_replace($word, 'alli', 'al', 0)
or self::_replace($word, 'bli', 'ble', 0)
or self::_replace($word, 'eli', 'e', 0);
break;
case 'o':
self::_replace($word, 'ization', 'ize', 0)
or self::_replace($word, 'ation', 'ate', 0)
or self::_replace($word, 'ator', 'ate', 0);
break;
case 's':
self::_replace($word, 'iveness', 'ive', 0)
or self::_replace($word, 'fulness', 'ful', 0)
or self::_replace($word, 'ousness', 'ous', 0)
or self::_replace($word, 'alism', 'al', 0);
break;
case 't':
self::_replace($word, 'biliti', 'ble', 0)
or self::_replace($word, 'aliti', 'al', 0)
or self::_replace($word, 'iviti', 'ive', 0);
break;
}
return $word;
}
/**
* Step 3
*
* @param string $word The token to stem.
*
* @return string
*
* @since 2.5
*/
private static function _step3($word)
{
switch (substr($word, -2, 1))
{
case 'a':
self::_replace($word, 'ical', 'ic', 0);
break;
case 's':
self::_replace($word, 'ness', '', 0);
break;
case 't':
self::_replace($word, 'icate', 'ic', 0)
or self::_replace($word, 'iciti', 'ic', 0);
break;
case 'u':
self::_replace($word, 'ful', '', 0);
break;
case 'v':
self::_replace($word, 'ative', '', 0);
break;
case 'z':
self::_replace($word, 'alize', 'al', 0);
break;
}
return $word;
}
/**
* Step 4
*
* @param string $word The token to stem.
*
* @return string
*
* @since 2.5
*/
private static function _step4($word)
{
switch (substr($word, -2, 1))
{
case 'a':
self::_replace($word, 'al', '', 1);
break;
case 'c':
self::_replace($word, 'ance', '', 1)
or self::_replace($word, 'ence', '', 1);
break;
case 'e':
self::_replace($word, 'er', '', 1);
break;
case 'i':
self::_replace($word, 'ic', '', 1);
break;
case 'l':
self::_replace($word, 'able', '', 1)
or self::_replace($word, 'ible', '', 1);
break;
case 'n':
self::_replace($word, 'ant', '', 1)
or self::_replace($word, 'ement', '', 1)
or self::_replace($word, 'ment', '', 1)
or self::_replace($word, 'ent', '', 1);
break;
case 'o':
if (substr($word, -4) == 'tion' or substr($word, -4) == 'sion')
{
self::_replace($word, 'ion', '', 1);
}
else
{
self::_replace($word, 'ou', '', 1);
}
break;
case 's':
self::_replace($word, 'ism', '', 1);
break;
case 't':
self::_replace($word, 'ate', '', 1)
or self::_replace($word, 'iti', '', 1);
break;
case 'u':
self::_replace($word, 'ous', '', 1);
break;
case 'v':
self::_replace($word, 'ive', '', 1);
break;
case 'z':
self::_replace($word, 'ize', '', 1);
break;
}
return $word;
}
/**
* Step 5
*
* @param string $word The token to stem.
*
* @return string
*
* @since 2.5
*/
private static function _step5($word)
{
// Part a
if (substr($word, -1) == 'e')
{
if (self::_m(substr($word, 0, -1)) > 1)
{
self::_replace($word, 'e', '');
}
elseif (self::_m(substr($word, 0, -1)) == 1)
{
if (!self::_cvc(substr($word, 0, -1)))
{
self::_replace($word, 'e', '');
}
}
}
// Part b
if (self::_m($word) > 1 and self::_doubleConsonant($word) and substr($word, -1) == 'l')
{
$word = substr($word, 0, -1);
}
return $word;
}
/**
* Replaces the first string with the second, at the end of the string. If third
* arg is given, then the preceding string must match that m count at least.
*
* @param string &$str String to check
* @param string $check Ending to check for
* @param string $repl Replacement string
* @param integer $m Optional minimum number of m() to meet
*
* @return boolean Whether the $check string was at the end
* of the $str string. True does not necessarily mean
* that it was replaced.
*
* @since 2.5
*/
private static function _replace(&$str, $check, $repl, $m = null)
{
$len = 0 - strlen($check);
if (substr($str, $len) == $check)
{
$substr = substr($str, 0, $len);
if (is_null($m) or self::_m($substr) > $m)
{
$str = $substr . $repl;
}
return true;
}
return false;
}
/**
* m() measures the number of consonant sequences in $str. if c is
* a consonant sequence and v a vowel sequence, and <..> indicates arbitrary
* presence,
*
* <c><v> gives 0
* <c>vc<v> gives 1
* <c>vcvc<v> gives 2
* <c>vcvcvc<v> gives 3
*
* @param string $str The string to return the m count for
*
* @return integer The m count
*
* @since 2.5
*/
private static function _m($str)
{
$c = self::$_regex_consonant;
$v = self::$_regex_vowel;
$str = preg_replace("#^$c+#", '', $str);
$str = preg_replace("#$v+$#", '', $str);
preg_match_all("#($v+$c+)#", $str, $matches);
return count($matches[1]);
}
/**
* Returns true/false as to whether the given string contains two
* of the same consonant next to each other at the end of the string.
*
* @param string $str String to check
*
* @return boolean Result
*
* @since 2.5
*/
private static function _doubleConsonant($str)
{
$c = self::$_regex_consonant;
return preg_match("#$c{2}$#", $str, $matches) and $matches[0]{0} == $matches[0]{1};
}
/**
* Checks for ending CVC sequence where second C is not W, X or Y
*
* @param string $str String to check
*
* @return boolean Result
*
* @since 2.5
*/
private static function _cvc($str)
{
$c = self::$_regex_consonant;
$v = self::$_regex_vowel;
return preg_match("#($c$v$c)$#", $str, $matches) and strlen($matches[1]) == 3 and $matches[1]{2} != 'w' and $matches[1]{2} != 'x'
and $matches[1]{2} != 'y';
}
}

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<?php
/**
* @package Joomla.Administrator
* @subpackage com_finder
*
* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('_JEXEC') or die;
JLoader::register('FinderIndexerStemmer', dirname(__DIR__) . '/stemmer.php');
/**
* Snowball stemmer class for the Finder indexer package.
*
* @package Joomla.Administrator
* @subpackage com_finder
* @since 2.5
*/
class FinderIndexerStemmerSnowball extends FinderIndexerStemmer
{
/**
* Method to stem a token and return the root.
*
* @param string $token The token to stem.
* @param string $lang The language of the token.
*
* @return string The root token.
*
* @since 2.5
*/
public function stem($token, $lang)
{
// Language to use if All is specified.
static $defaultLang = '';
// If language is All then try to get site default language.
if ($lang == '*' && $defaultLang == '')
{
$languages = JLanguageHelper::getLanguages();
$defaultLang = isset($languages[0]->sef) ? $languages[0]->sef : '*';
$lang = $defaultLang;
}
// Stem the token if it is not in the cache.
if (!isset($this->cache[$lang][$token]))
{
// Get the stem function from the language string.
switch ($lang)
{
// Danish stemmer.
case 'da':
$function = 'stem_danish';
break;
// German stemmer.
case 'de':
$function = 'stem_german';
break;
// English stemmer.
default:
case 'en':
$function = 'stem_english';
break;
// Spanish stemmer.
case 'es':
$function = 'stem_spanish';
break;
// Finnish stemmer.
case 'fi':
$function = 'stem_finnish';
break;
// French stemmer.
case 'fr':
$function = 'stem_french';
break;
// Hungarian stemmer.
case 'hu':
$function = 'stem_hungarian';
break;
// Italian stemmer.
case 'it':
$function = 'stem_italian';
break;
// Norwegian stemmer.
case 'nb':
$function = 'stem_norwegian';
break;
// Dutch stemmer.
case 'nl':
$function = 'stem_dutch';
break;
// Portuguese stemmer.
case 'pt':
$function = 'stem_portuguese';
break;
// Romanian stemmer.
case 'ro':
$function = 'stem_romanian';
break;
// Russian stemmer.
case 'ru':
$function = 'stem_russian_unicode';
break;
// Swedish stemmer.
case 'sv':
$function = 'stem_swedish';
break;
// Turkish stemmer.
case 'tr':
$function = 'stem_turkish_unicode';
break;
}
// Stem the word if the stemmer method exists.
$this->cache[$lang][$token] = function_exists($function) ? $function($token) : $token;
}
return $this->cache[$lang][$token];
}
}