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Simple gettext library.

Javascript i18n using gettext, jQuery and Python

This toolkit uses a combination of gettext, a jQuery plugin and a Python script to enable the internationalization of Javascript files.

This technique is to be used before deploying or commiting javascript code. It take the form of a single console command which goes through multiple parsing and conversion steps. After this command is executed, a JSON file is available and can be used via a jQuery plugin.

No js version

cake build to get it.


Will create json files for all domains for all languages in some folder.

Translations filename format: :locales_dir/:language/LC_MESSAGES/


Sample javascript code

function write(txt) {
    $("#console").append(txt + "<br/>")
write(_("Humpty Dumpty sat on a wall,"));
write(_("Humpty Dumpty had a great fall."));
write(_("All the king's horses, And all the king's men,"));
write(_("Couldn't put Humpty together again."));

Setup needed in the HTML document

<html lang="fr">
    <link href="javascript.en.json" lang="en" rel="gettext" />
    <link href="" lang="fr" rel="gettext" />
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="jquery.gettext.js"></script>
<script type="text/javascript">$.gt.load();</script> 
<script type="text/javascript" src="test.js"></script>

Console command and expected output

C:\gettext> makemessages.bat
Extracting keys from javascript code
Merging new keys with existing keys
Converting message files to binary
0 translated messages, 4 untranslated messages.
4 translated messages.
Converting binary files to JSON
Removing temp files

Resulting JSON files

"": "Project-Id-Version: \nReport-Msgid-Bugs-To: \nPOT-Creation-Date: 2009-01-29 14:30-0500\nPO-Revision-Date: 2009-01-30 11:05-0500\nLast-Translator: John Doe <>\nLanguage-Team: fr <>\nMIME-Version: 1.0\nContent-Type: text/plain; charset=utf-8\nContent-Transfer-Encoding: 8bit\n", 
"Couldn't put Humpty together again.": "Ne purent jamais Remonter Humpty.", 
"Humpty Dumpty sat on a wall,": "Humpty Dumpty s'assit sur le mur,", 
"All the king's horses, And all the king's men,": "Tous les chevaux du roi, Et tous les soldats du roi", 
"Humpty Dumpty had a great fall.": "Humpty Dumpty se cassa la figure."