+
+ /**
+ * @param $count int
+ * @param $forms array
+ *
+ * @return string
+ */
+ function convertPlural( $count, $forms ) {
+ if ( !count( $forms ) ) {
+ return '';
+ }
+
+ // If the actual number is not mentioned in the expression, then just two forms are enough:
+ // singular for $count == 1
+ // plural for $count != 1
+ // For example, "This user belongs to {{PLURAL:$1|one group|several groups}}."
+ if ( count( $forms ) === 2 ) {
+ return $count == 1 ? $forms[0] : $forms[1];
+ }
+
+ // @todo FIXME: CLDR defines 4 plural forms. Form with decimals missing.
+ // See http://unicode.org/repos/cldr-tmp/trunk/diff/supplemental/language_plural_rules.html#ru
+ $forms = $this->preConvertPlural( $forms, 3 );
+
+ if ( $count > 10 && floor( ( $count % 100 ) / 10 ) == 1 ) {
+ return $forms[2];
+ } else {
+ switch ( $count % 10 ) {
+ case 1: return $forms[0];
+ case 2:
+ case 3:
+ case 4: return $forms[1];
+ default: return $forms[2];
+ }
+ }
+ }