It is stated here that Babel can extract gettext messages for Python and Javascript files.
Babel comes with a few builtin extractors: python (which extractsmessages from Python source files), javascript, and ignore (whichextracts nothing).
The command line extractor is documented here - but with no examples on usage.
Also in the same pointer above, there is some mention of a config file to be used with extraction, but not much expanded on.
When I run the basic command for the extractor on a dir with js files, I get only the .PO header generated but no messages.
$ pybabel extract /path/to/js-dir# Translations template for PROJECT.
# Copyright (C) 2012 ORGANIZATION
# This file is distributed under the same license as the PROJECT project.
# FIRST AUTHOR <EMAIL@ADDRESS>, 2012.
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: PROJECT VERSION\n"
"Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
"POT-Creation-Date: 2012-04-22 19:39+1000\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <[email protected]>\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=utf-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Generated-By: Babel 0.9.6\n"$
Here is a sample segment from a js file I'm trying to extract messages for:
else if(data.status == "1"){var follow_html = gettext('Follow');object.attr("class", 'button follow');object.html(follow_html);var fav = getFavoriteNumber();fav.removeClass("my-favorite-number");if(data.count === 0){data.count = '';fav.text('');}else{var fmts = ngettext('%s follower', '%s followers', data.count);fav.text(interpolate(fmts, [data.count]));}
}
I would appreciate it if someone can provide exact CLI options and config settings to make the extraction work, or a pointer to such.