resources/mediawiki.language/mediawiki.language.js

   1 /**
   2  * Localized Language support attempts to mirror some of the functionality of
   3  * Language.php in MediaWiki.
   4  * This adds methods for transforming message text.
   5  */
   6 ( function ( mw, $ ) {
   7
   8 var language = {
   9
  10         /**
  11          * Process the PLURAL template substitution
  12          *
  13          * @param {object} template Template object
  14          * @format template
  15          *  {
  16          *      'title': [title of template],
  17          *      'parameters': [template parameters]
  18          *  }
  19          * @example {{Template:title|params}}
  20          */
  21         procPLURAL: function ( template ) {
  22                 if ( template.title && template.parameters && mw.language.convertPlural ) {
  23                         // Check if we have forms to replace
  24                         if ( template.parameters.length === 0 ) {
  25                                 return '';
  26                         }
  27                         // Restore the count into a Number ( if it got converted earlier )
  28                         var count = mw.language.convertNumber( template.title, true );
  29                         // Do convertPlural call
  30                         return mw.language.convertPlural( parseInt( count, 10 ), template.parameters );
  31                 }
  32                 // Could not process plural return first form or nothing
  33                 if ( template.parameters[0] ) {
  34                         return template.parameters[0];
  35                 }
  36                 return '';
  37         },
  38
  39         /**
  40          * Plural form transformations, needed for some languages.
  41          *
  42          * @param count integer Non-localized quantifier
  43          * @param forms array List of plural forms
  44          * @return string Correct form for quantifier in this language
  45          */
  46         convertPlural: function( count, forms ) {
  47                 var pluralFormIndex = 0;
  48                 if ( !forms || forms.length === 0 ) {
  49                         return '';
  50                 }
  51                 var pluralRules = mw.language.getData( mw.config.get( 'wgUserLanguage' ), 'pluralRules' );
  52                 if ( !pluralRules ) {
  53                         // default fallback.
  54                         return ( count === 1 ) ? forms[0] : forms[1];
  55                 }
  56                 pluralFormIndex = mw.cldr.getPluralForm( count, pluralRules );
  57                 pluralFormIndex = Math.min( pluralFormIndex, forms.length - 1 );
  58                 return forms[pluralFormIndex];
  59         },
  60
  61         /**
  62          * Pads an array to a specific length by copying the last one element.
  63          *
  64          * @param forms array Number of forms given to convertPlural
  65          * @param count integer Number of forms required
  66          * @return array Padded array of forms
  67          */
  68         preConvertPlural: function ( forms, count ) {
  69                 while ( forms.length < count ) {
  70                         forms.push( forms[ forms.length-1 ] );
  71                 }
  72                 return forms;
  73         },
  74
  75         /**
  76          * Converts a number using digitTransformTable.
  77          *
  78          * @param {num} number Value to be converted
  79          * @param {boolean} integer Convert the return value to an integer
  80          */
  81         convertNumber: function( num, integer ) {
  82                 var i, tmp, transformTable;
  83
  84                 if ( !mw.language.digitTransformTable ) {
  85                         return num;
  86                 }
  87                 // Set the target Transform table:
  88                 transformTable = mw.language.digitTransformTable;
  89                 // Check if the "restore" to Latin number flag is set:
  90                 if ( integer ) {
  91                         if ( parseInt( num, 10 ) === num ) {
  92                                 return num;
  93                         }
  94                         tmp = [];
  95                         for ( i in transformTable ) {
  96                                 tmp[ transformTable[ i ] ] = i;
  97                         }
  98                         transformTable = tmp;
  99                 }
 100                 var numberString = '' + num;
 101                 var convertedNumber = '';
 102                 for ( i = 0; i < numberString.length; i++ ) {
 103                         if ( transformTable[ numberString[i] ] ) {
 104                                 convertedNumber += transformTable[numberString[i]];
 105                         } else {
 106                                 convertedNumber += numberString[i];
 107                         }
 108                 }
 109                 return integer ? parseInt( convertedNumber, 10 ) : convertedNumber;
 110         },
 111
 112         /**
 113          * Provides an alternative text depending on specified gender.
 114          * Usage {{gender:[gender|user object]|masculine|feminine|neutral}}.
 115          * If second or third parameter are not specified, masculine is used.
 116          *
 117          * These details may be overriden per language.
 118          *
 119          * @param gender string male, female, or anything else for neutral.
 120          * @param forms array List of gender forms
 121          *
 122          * @return string
 123          */
 124         gender: function( gender, forms ) {
 125                 if ( !forms || forms.length === 0 ) {
 126                         return '';
 127                 }
 128                 forms = mw.language.preConvertPlural( forms, 2 );
 129                 if ( gender === 'male' ) {
 130                         return forms[0];
 131                 }
 132                 if ( gender === 'female' ) {
 133                         return forms[1];
 134                 }
 135                 return ( forms.length === 3 ) ? forms[2] : forms[0];
 136         },
 137
 138         /**
 139          * Grammatical transformations, needed for inflected languages.
 140          * Invoked by putting {{grammar:form|word}} in a message.
 141          * The rules can be defined in $wgGrammarForms global or grammar
 142          * forms can be computed dynamically by overriding this method per language
 143          *
 144          * @param word {String}
 145          * @param form {String}
 146          * @return {String}
 147          */
 148         convertGrammar: function ( word, form ) {
 149                 var grammarForms = mw.language.getData( mw.config.get( 'wgUserLanguage' ), 'grammarForms' );
 150                 if ( grammarForms && grammarForms[form] ) {
 151                         return grammarForms[form][word] || word;
 152                 }
 153                 return word;
 154         },
 155
 156         // Digit Transform Table, populated by language classes where applicable
 157         digitTransformTable: mw.language.getData( mw.config.get( 'wgUserLanguage' ), 'digitTransformTable' )
 158 };
 159
 160 $.extend( mw.language, language );
 161
 162 }( mediaWiki, jQuery ) );