/**
* Temporary workaround for incorrect collation of Persian language ('fa') in ICU 52 (bug T139110).
*
- * All of the following will be considered separate letters for category headings in Persian:
+ * 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)
- * - Characters 'ء' 'ئ' (don't appear at the beginning of words, but it's easier to implement)
*
* @since 1.29
*/
class CollationFa extends IcuCollation {
- private $tertiaryCollator;
+
+ // Really hacky - replace with stuff from other blocks.
+ private $override = [
+ "\xd8\xa7" => "\u{0621}",
+ "\xd9\x88" => "\u{0649}",
+ "\xd9\xb2" => "\xF3\xB3\x80\x81",
+ "\xd9\xb3" => "\xF3\xB3\x80\x82",
+ ];
public function __construct() {
parent::__construct( 'fa' );
- $this->tertiaryCollator = Collator::create( 'fa' );
}
- public function getPrimarySortKey( $string ) {
- $primary = parent::getPrimarySortKey( $string );
- // We have to use a tertiary sortkey for everything with the primary sortkey of 2627.
- // Otherwise, the "Remove duplicate prefixes" logic in IcuCollation would remove them.
- // This matches sortkeys for the following characters: ء ئ ا و ٲ ٳ
- if ( substr( $primary, 0, 2 ) === "\x26\x27" ) {
- wfDebug( "Using tertiary sortkey for '$string'\n" );
- return $this->tertiaryCollator->getSortKey( $string );
+ 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 $primary;
+ return parent::getFirstLetter( $string );
}
}