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+/**
+ * jQuery Internationalization library
+ *
+ * Copyright (C) 2011-2013 Santhosh Thottingal, Neil Kandalgaonkar
+ *
+ * jquery.i18n 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.
+ *
+ * @licence GNU General Public Licence 2.0 or later
+ * @licence MIT License
+ */
+
+( function ( $ ) {
+ 'use strict';
+
+ var MessageParserEmitter = function () {
+ this.language = $.i18n.languages[String.locale] || $.i18n.languages['default'];
+ };
+
+ MessageParserEmitter.prototype = {
+ constructor: MessageParserEmitter,
+
+ /**
+ * (We put this method definition here, and not in prototype, to make
+ * sure it's not overwritten by any magic.) Walk entire node structure,
+ * applying replacements and template functions when appropriate
+ *
+ * @param {Mixed} node abstract syntax tree (top node or subnode)
+ * @param {Array} replacements for $1, $2, ... $n
+ * @return {Mixed} single-string node or array of nodes suitable for
+ * jQuery appending.
+ */
+ emit: function ( node, replacements ) {
+ var ret, subnodes, operation,
+ messageParserEmitter = this;
+
+ switch ( typeof node ) {
+ case 'string':
+ case 'number':
+ ret = node;
+ break;
+ case 'object':
+ // node is an array of nodes
+ subnodes = $.map( node.slice( 1 ), function ( n ) {
+ return messageParserEmitter.emit( n, replacements );
+ } );
+
+ operation = node[0].toLowerCase();
+
+ if ( typeof messageParserEmitter[operation] === 'function' ) {
+ ret = messageParserEmitter[operation]( subnodes, replacements );
+ } else {
+ throw new Error( 'unknown operation "' + operation + '"' );
+ }
+
+ break;
+ case 'undefined':
+ // Parsing the empty string (as an entire expression, or as a
+ // paramExpression in a template) results in undefined
+ // Perhaps a more clever parser can detect this, and return the
+ // empty string? Or is that useful information?
+ // The logical thing is probably to return the empty string here
+ // when we encounter undefined.
+ ret = '';
+ break;
+ default:
+ throw new Error( 'unexpected type in AST: ' + typeof node );
+ }
+
+ return ret;
+ },
+
+ /**
+ * Parsing has been applied depth-first we can assume that all nodes
+ * here are single nodes Must return a single node to parents -- a
+ * jQuery with synthetic span However, unwrap any other synthetic spans
+ * in our children and pass them upwards
+ *
+ * @param {Array} nodes Mixed, some single nodes, some arrays of nodes.
+ * @return String
+ */
+ concat: function ( nodes ) {
+ var result = '';
+
+ $.each( nodes, function ( i, node ) {
+ // strings, integers, anything else
+ result += node;
+ } );
+
+ return result;
+ },
+
+ /**
+ * Return escaped replacement of correct index, or string if
+ * unavailable. Note that we expect the parsed parameter to be
+ * zero-based. i.e. $1 should have become [ 0 ]. if the specified
+ * parameter is not found return the same string (e.g. "$99" ->
+ * parameter 98 -> not found -> return "$99" ) TODO throw error if
+ * nodes.length > 1 ?
+ *
+ * @param {Array} nodes One element, integer, n >= 0
+ * @param {Array} replacements for $1, $2, ... $n
+ * @return {string} replacement
+ */
+ replace: function ( nodes, replacements ) {
+ var index = parseInt( nodes[0], 10 );
+
+ if ( index < replacements.length ) {
+ // replacement is not a string, don't touch!
+ return replacements[index];
+ } else {
+ // index not found, fallback to displaying variable
+ return '$' + ( index + 1 );
+ }
+ },
+
+ /**
+ * Transform parsed structure into pluralization n.b. The first node may
+ * be a non-integer (for instance, a string representing an Arabic
+ * number). So convert it back with the current language's
+ * convertNumber.
+ *
+ * @param {Array} nodes List [ {String|Number}, {String}, {String} ... ]
+ * @return {String} selected pluralized form according to current
+ * language.
+ */
+ plural: function ( nodes ) {
+ var count = parseFloat( this.language.convertNumber( nodes[0], 10 ) ),
+ forms = nodes.slice( 1 );
+
+ return forms.length ? this.language.convertPlural( count, forms ) : '';
+ },
+
+ /**
+ * Transform parsed structure into gender Usage
+ * {{gender:gender|masculine|feminine|neutral}}.
+ *
+ * @param {Array} nodes List [ {String}, {String}, {String} , {String} ]
+ * @return {String} selected gender form according to current language
+ */
+ gender: function ( nodes ) {
+ var gender = nodes[0],
+ forms = nodes.slice( 1 );
+
+ return this.language.gender( gender, forms );
+ },
+
+ /**
+ * Transform parsed structure into grammar conversion. Invoked by
+ * putting {{grammar:form|word}} in a message
+ *
+ * @param {Array} nodes List [{Grammar case eg: genitive}, {String word}]
+ * @return {String} selected grammatical form according to current
+ * language.
+ */
+ grammar: function ( nodes ) {
+ var form = nodes[0],
+ word = nodes[1];
+
+ return word && form && this.language.convertGrammar( word, form );
+ }
+ };
+
+ $.extend( $.i18n.parser.emitter, new MessageParserEmitter() );
+}( jQuery ) );