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/**
* Copyright 2010-2013 Ben Birch
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this software except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
(function() {
/**
* provides text formatting and i18n key storage features<br>
* implements most of the Sun Java MessageFormat functionality.
* @see <a href="http://java.sun.com/j2se/1.5.0/docs/api/java/text/MessageFormat.html" target="sun">Sun's Documentation</a>
*/
var keys = {};
var format = function(message, args) {
var substitute = function() {
var format = arguments[1].split(',');
var substr = escape(args[format.shift()]);
if(format.length === 0) {
return substr; // simple substitution eg {0}
}
switch(format.shift()) {
case "number" : return (new Number(substr)).toLocaleString();
case "date" : return (new Date(+substr)).toLocaleDateString(); // date and time require milliseconds since epoch
case "time" : return (new Date(+substr)).toLocaleTimeString(); // eg i18n.text("Key", +(new Date())); for current time
}
var styles = format.join("").split("|").map(function(style) {
return style.match(/(-?[\.\d]+)(#|<)([^{}]*)/);
});
var match = styles[0][3];
for(var i=0; i<styles.length; i++) {
if((styles[i][2] === "#" && (+styles[i][1]) === (+substr)) ||
(styles[i][2] === "<" && ((+styles[i][1]) < (+substr)))) {
match = styles[i][3];
}
}
return match;
};
return message && message.replace(/'(')|'([^']+)'|([^{']+)|([^']+)/g, function(x, sq, qs, ss, sub) {
do {} while(sub && (sub !== (sub = (sub.replace(/\{([^{}]+)\}/, substitute)))));
return sq || qs || ss || unescape(sub);
});
};
this.i18n = {
setKeys: function(strings) {
for(var key in strings) {
keys[key] = strings[key];
}
},
text: function() {
var args = Array.prototype.slice.call(arguments),
key = keys[args.shift()];
if(args.length === 0) {
return key;
}
return format(key, args);
},
complex: function() {
var args = Array.prototype.slice.call(arguments),
key = keys[args.shift()],
ret = [],
replacer = function(x, pt, sub) { ret.push(pt || args[+sub]); return ""; };
do {} while(key && key !== (key = key.replace(/([^{]+)|\{(\d+)\}/, replacer )));
return ret;
}
};
})();
(function() {
var nav = window.navigator;
var userLang = ( nav.languages && nav.languages[0] ) || nav.language || nav.userLanguage;
var scripts = document.getElementsByTagName('script');
var data = scripts[ scripts.length - 1].dataset;
if( ! data["langs"] ) {
return;
}
var langs = data["langs"].split(/\s*,\s*/);
var script0 = scripts[0];
function install( lang ) {
var s = document.createElement("script");
s.src = data["basedir"] + "/" + lang + '_strings.js';
s.async = false;
script0.parentNode.appendChild(s);
script0 = s;
}
install( langs.shift() ); // always install primary language
userLang && langs
.filter( function( lang ) { return userLang.indexOf( lang ) === 0; } )
.forEach( install );
}());
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