wikimedia/mediawiki-core

/*!
 * Ossetian (Ирон) language functions
 * @author Santhosh Thottingal
 */

mw.language.convertGrammar = function ( word, form ) {
    var grammarForms = mw.language.getData( 'os', 'grammarForms' ),
        // Ending for allative case
        endAllative = 'мæ',
        // Variable for 'j' beetwen vowels
        jot = '',
        // Variable for "-" for not Ossetic words
        hyphen = '',
        // Variable for ending
        ending = '';

    if ( grammarForms && grammarForms[ form ] ) {
        return grammarForms[ form ][ word ];
    }
    // Checking if the $word is in plural form
    if ( /тæ$/i.test( word ) ) {
        word = word.slice( 0, -1 );
        endAllative = 'æм';
    } else if ( /[аæеёиоыэюя]$/i.test( word ) ) {
        // Works if word is in singular form.
        // Checking if word ends on one of the vowels: е, ё, и, о, ы, э, ю, я.
        jot = 'й';
    } else if ( /у$/i.test( word ) ) {
        // 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.

        if ( !word.slice( -2, -1 ).match( /[аæеёиоыэюя]$/i ) ) {
            jot = 'й';
        }
    } else if ( !/[бвгджзйклмнопрстфхцчшщьъ]$/i.test( word ) ) {
        hyphen = '-';
    }

    switch ( form ) {
        case 'genitive':
            ending = hyphen + jot + 'ы';
            break;
        case 'dative':
            ending = hyphen + jot + 'æн';
            break;
        case 'allative':
            ending = hyphen + endAllative;
            break;
        case 'ablative':
            if ( jot === 'й' ) {
                ending = hyphen + jot + 'æ';
            } else {
                ending = hyphen + jot + 'æй';
            }
            break;
        case 'superessive':
            ending = hyphen + jot + 'ыл';
            break;
        case 'equative':
            ending = hyphen + jot + 'ау';
            break;
        case 'comitative':
            ending = hyphen + 'имæ';
            break;
    }
    return word + ending;
};