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+<?php
+
+/** Ossetian (Ирон)
+ *
+ * @author Soslan Khubulov
+ *
+ * @ingroup Language
+ */
+class LanguageOs extends Language {
+
+ /**
+ * Convert from the nominative form of a noun to other cases
+ * Invoked with {{grammar:case|word}}
+ *
+ * Depending on word there are four different ways of converting to other cases.
+ * 1) Word consist of not cyrillic letters or is an abbreviation.
+ * Then result word is: word + hyphen + case ending.
+ *
+ * 2) Word consist of cyrillic letters.
+ * 2.1) Word is in plural.
+ * Then result word is: word - last letter + case ending. Ending of allative case here is 'æм'.
+ *
+ * 2.2) Word is in singular.
+ * 2.2.1) Word ends on consonant.
+ * Then result word is: word + case ending.
+ *
+ * 2.2.2) Word ends on vowel.
+ * Then result word is: word + 'й' + case ending for cases != allative or comitative
+ * and word + case ending for allative or comitative. Ending of allative case here is 'æ'.
+ *
+ * @param $word string
+ * @param $case string
+ * @return string
+ */
+ function convertGrammar( $word, $case ) {
+ global $wgGrammarForms;
+ if ( isset( $wgGrammarForms['os'][$case][$word] ) ) {
+ return $wgGrammarForms['os'][$case][$word];
+ }
+ # Ending for allative case
+ $end_allative = 'мæ';
+ # Variable for 'j' beetwen vowels
+ $jot = '';
+ # Variable for "-" for not Ossetic words
+ $hyphen = '';
+ # Variable for ending
+ $ending = '';
+
+
+ # CHecking if the $word is in plural form
+ if ( preg_match( '/тæ$/u', $word ) ) {
+ $word = mb_substr( $word, 0, -1 );
+ $end_allative = 'æм';
+ }
+ # Works if $word is in singular form.
+ # Checking if $word ends on one of the vowels: е, ё, и, о, ы, э, ю, я.
+ elseif ( preg_match( "/[аæеёиоыэюя]$/u", $word ) ) {
+ $jot = 'й';
+ }
+ # Checking if $word ends on 'у'. 'У' can be either consonant 'W' or vowel 'U' in cyrillic Ossetic.
+ # Examples: {{grammar:genitive|аунеу}} = аунеуы, {{grammar:genitive|лæппу}} = лæппуйы.
+ elseif ( preg_match( "/у$/u", $word ) ) {
+ if ( !preg_match( "/[аæеёиоыэюя]$/u", mb_substr( $word, -2, 1 ) ) )
+ $jot = 'й';
+ } elseif ( !preg_match( "/[бвгджзйклмнопрстфхцчшщьъ]$/u", $word ) ) {
+ $hyphen = '-';
+ }
+
+ switch ( $case ) {
+ case 'genitive': $ending = $hyphen . $jot . 'ы'; break;
+ case 'dative': $ending = $hyphen . $jot . 'æн'; break;
+ case 'allative': $ending = $hyphen . $end_allative; break;
+ case 'ablative':
+ if ( $jot == 'й' ) {
+ $ending = $hyphen . $jot . 'æ'; break;
+ }
+ else {
+ $ending = $hyphen . $jot . 'æй'; break;
+ }
+ case 'inessive': break;
+ case 'superessive': $ending = $hyphen . $jot . 'ыл'; break;
+ case 'equative': $ending = $hyphen . $jot . 'ау'; break;
+ case 'comitative': $ending = $hyphen . 'имæ'; break;
+ }
+ return $word . $ending;
+ }
+}