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<?php
/**
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
/**
* Temporary workaround for incorrect collation of Persian language ('fa') in ICU 52 (bug T139110).
*
* Replace with other letters that appear in an okish spot in the alphabet
*
* - Characters 'و' 'ا' (often appear at the beginning of words)
* - Characters 'ٲ' 'ٳ' (may appear at the beginning of words in loanwords)
*
* @since 1.29
*/
class CollationFa extends IcuCollation {
// Really hacky - replace with stuff from other blocks.
private $override = [
// U+0627 ARABIC LETTER ALEF => U+0623 ARABIC LETTER ALEF WITH HAMZA ABOVE
"\xd8\xa7" => "\xd8\xa3",
// U+0648 ARABIC LETTER WAW => U+0649 ARABIC LETTER ALEF MAKSURA
"\xd9\x88" => "\xd9\x89",
// U+0672 ARABIC LETTER ALEF WITH WAVY HAMZA ABOVE => U+F3001 (private use area)
"\xd9\xb2" => "\xF3\xB3\x80\x81",
// U+0673 ARABIC LETTER ALEF WITH WAVY HAMZA BELOW => U+F3002 (private use area)
"\xd9\xb3" => "\xF3\xB3\x80\x82",
];
public function __construct() {
parent::__construct( 'fa' );
}
public function getSortKey( $string ) {
$modified = strtr( $string, $this->override );
return parent::getSortKey( $modified );
}
public function getFirstLetter( $string ) {
if ( isset( $this->override[substr( $string, 0, 2 )] ) ) {
return substr( $string, 0, 2 );
}
return parent::getFirstLetter( $string );
}
}
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