CollationFa.php

Go to the documentation of this file.

<?php
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 );
    }
}