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jquery.uls.data.utils.js
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/**
* Utility functions for querying language data.
*
* Copyright (C) 2012 Alolita Sharma, Amir Aharoni, Arun Ganesh, Brandon Harris,
* Niklas Laxström, Pau Giner, Santhosh Thottingal, Siebrand Mazeland and other
* contributors. See CREDITS for a list.
*
* UniversalLanguageSelector is dual licensed GPLv2 or later and MIT. You don't
* have to do anything special to choose one license or the other and you don't
* have to notify anyone which license you are using. You are free to use
* UniversalLanguageSelector in commercial projects as long as the copyright
* header is left intact. See files GPL-LICENSE and MIT-LICENSE for details.
*
* @file
* @license GNU General Public Licence 2.0 or later
* @license MIT License
*/
( function ( $ ) {
'use strict';
/**
* Is this language a redirect to another language?
*
* @param {string} language Language code
* @return {string|boolean} Target language code if it's a redirect or false if it's not
*/
$.uls.data.isRedirect = function ( language ) {
return ( $.uls.data.languages[ language ] !== undefined &&
$.uls.data.languages[ language ].length === 1 ) ?
$.uls.data.languages[ language ][ 0 ] : false;
};
/**
* Returns the script of the language.
*
* @param {string} language Language code
* @return {string}
*/
$.uls.data.getScript = function ( language ) {
var target = $.uls.data.isRedirect( language );
if ( target ) {
return $.uls.data.getScript( target );
}
if ( !$.uls.data.languages[ language ] ) {
// Undetermined
return 'Zyyy';
}
return $.uls.data.languages[ language ][ 0 ];
};
/**
* Returns the regions in which a language is spoken.
*
* @param {string} language Language code
* @return {string|string[]}
*/
$.uls.data.getRegions = function ( language ) {
var target = $.uls.data.isRedirect( language );
if ( target ) {
return $.uls.data.getRegions( target );
}
return ( $.uls.data.languages[ language ] && $.uls.data.languages[ language ][ 1 ] ) || 'UNKNOWN';
};
/**
* Returns the autonym of the language.
*
* @param {string} language Language code
* @return {string}
*/
$.uls.data.getAutonym = function ( language ) {
var target = $.uls.data.isRedirect( language );
if ( target ) {
return $.uls.data.getAutonym( target );
}
return ( $.uls.data.languages[ language ] &&
$.uls.data.languages[ language ][ 2 ] ) || language;
};
/**
* Returns all language codes and corresponding autonyms
*
* @return {string[]}
*/
$.uls.data.getAutonyms = function () {
var language,
autonymsByCode = {};
for ( language in $.uls.data.languages ) {
if ( $.uls.data.isRedirect( language ) ) {
continue;
}
autonymsByCode[ language ] = $.uls.data.getAutonym( language );
}
return autonymsByCode;
};
/**
* Returns all languages written in script.
*
* @param {string} script string
* @return {string[]} languages codes
*/
$.uls.data.getLanguagesInScript = function ( script ) {
return $.uls.data.getLanguagesInScripts( [ script ] );
};
/**
* Returns all languages written in the given scripts.
*
* @param {string[]} scripts
* @return {string[]} languages codes
*/
$.uls.data.getLanguagesInScripts = function ( scripts ) {
var language, i,
languagesInScripts = [];
for ( language in $.uls.data.languages ) {
if ( $.uls.data.isRedirect( language ) ) {
continue;
}
for ( i = 0; i < scripts.length; i++ ) {
if ( scripts[ i ] === $.uls.data.getScript( language ) ) {
languagesInScripts.push( language );
break;
}
}
}
return languagesInScripts;
};
/**
* Returns an associative array of languages in a region,
* grouped by script group.
*
* @param {string} region Region code
* @return {Object}
*/
$.uls.data.getLanguagesByScriptGroupInRegion = function ( region ) {
return $.uls.data.getLanguagesByScriptGroupInRegions( [ region ] );
};
/**
* Get the given list of languages grouped by script.
*
* @param {string[]} languages Array of language codes to group
* @return {string[]} Array of language codes
*/
$.uls.data.getLanguagesByScriptGroup = function ( languages ) {
var languagesByScriptGroup = {},
language, languageIndex, resolvedRedirect, langScriptGroup;
for ( languageIndex = 0; languageIndex < languages.length; languageIndex++ ) {
language = languages[ languageIndex ];
resolvedRedirect = $.uls.data.isRedirect( language ) || language;
langScriptGroup = $.uls.data.getScriptGroupOfLanguage( resolvedRedirect );
if ( !languagesByScriptGroup[ langScriptGroup ] ) {
languagesByScriptGroup[ langScriptGroup ] = [];
}
languagesByScriptGroup[ langScriptGroup ].push( language );
}
return languagesByScriptGroup;
};
/**
* Returns an associative array of languages in several regions,
* grouped by script group.
*
* @param {string[]} regions region codes
* @return {Object}
*/
$.uls.data.getLanguagesByScriptGroupInRegions = function ( regions ) {
var language, i, scriptGroup,
languagesByScriptGroupInRegions = {};
for ( language in $.uls.data.languages ) {
if ( $.uls.data.isRedirect( language ) ) {
continue;
}
for ( i = 0; i < regions.length; i++ ) {
if ( $.uls.data.getRegions( language ).indexOf( regions[ i ] ) !== -1 ) {
scriptGroup = $.uls.data.getScriptGroupOfLanguage( language );
if ( languagesByScriptGroupInRegions[ scriptGroup ] === undefined ) {
languagesByScriptGroupInRegions[ scriptGroup ] = [];
}
languagesByScriptGroupInRegions[ scriptGroup ].push( language );
break;
}
}
}
return languagesByScriptGroupInRegions;
};
/**
* Returns the script group of a script or 'Other' if it doesn't
* belong to any group.
*
* @param {string} script Script code
* @return {string} script group name
*/
$.uls.data.getGroupOfScript = function ( script ) {
var scriptGroup;
for ( scriptGroup in $.uls.data.scriptgroups ) {
if ( $.uls.data.scriptgroups[ scriptGroup ].indexOf( script ) !== -1 ) {
return scriptGroup;
}
}
return 'Other';
};
/**
* Returns the script group of a language.
*
* @param {string} language Language code
* @return {string} script group name
*/
$.uls.data.getScriptGroupOfLanguage = function ( language ) {
return $.uls.data.getGroupOfScript( $.uls.data.getScript( language ) );
};
/**
* Return the list of languages sorted by script groups.
*
* @param {string[]} languages Array of language codes to sort
* @return {string[]} Array of language codes
*/
$.uls.data.sortByScriptGroup = function ( languages ) {
var groupedLanguages, scriptGroups, i,
allLanguages = [];
groupedLanguages = $.uls.data.getLanguagesByScriptGroup( languages );
scriptGroups = Object.keys( groupedLanguages ).sort();
for ( i = 0; i < scriptGroups.length; i++ ) {
allLanguages = allLanguages.concat( groupedLanguages[ scriptGroups[ i ] ] );
}
return allLanguages;
};
/**
* A callback for sorting languages by autonym.
* Can be used as an argument to a sort function.
*
* @param {string} a Language code
* @param {string} b Language code
* @return {number}
*/
$.uls.data.sortByAutonym = function ( a, b ) {
var autonymA = $.uls.data.getAutonym( a ) || a,
autonymB = $.uls.data.getAutonym( b ) || b;
return ( autonymA.toLowerCase() < autonymB.toLowerCase() ) ? -1 : 1;
};
/**
* Check if a language is right-to-left.
*
* @param {string} language Language code
* @return {boolean}
*/
$.uls.data.isRtl = function ( language ) {
return $.uls.data.rtlscripts.indexOf( $.uls.data.getScript( language ) ) !== -1;
};
/**
* Return the direction of the language
*
* @param {string} language Language code
* @return {string}
*/
$.uls.data.getDir = function ( language ) {
return $.uls.data.isRtl( language ) ? 'rtl' : 'ltr';
};
/**
* Returns the languages spoken in a territory.
*
* @param {string} territory Territory code
* @return {string[]} list of language codes
*/
$.uls.data.getLanguagesInTerritory = function ( territory ) {
return $.uls.data.territories[ territory ] || [];
};
/**
* Adds a language in run time and sets its options as provided.
* If the target option is provided, the language is defined as a redirect.
* Other possible options are script, regions and autonym.
*
* @param {string} code New language code.
* @param {Object} options Language properties.
*/
$.uls.data.addLanguage = function ( code, options ) {
if ( options.target ) {
$.uls.data.languages[ code ] = [ options.target ];
} else {
$.uls.data.languages[ code ] = [ options.script, options.regions, options.autonym ];
}
};
/**
* Removes a language from the langdb in run time.
*
* @param {string} code Language code to delete.
* @return {boolean} true if the language was removed, false otherwise.
*/
$.uls.data.deleteLanguage = function ( code ) {
if ( $.uls.data.languages[ code ] ) {
delete $.uls.data.languages[ code ];
return true;
}
return false;
};
}( jQuery ) );

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