i18n subsites plugin
===================

This plugin extends the translations functionality by creating i8n-ized sub-sites for the default site.
It is therefore redundant with the *\*_LANG_{SAVE_AS,URL}* variables, so it disables them to prevent conflicts.

What it does
------------
1. The *\*_LANG_URL* and *\*_LANG_SAVE_AS* variables are set to their normal counterparts (e.g. *ARTICLE_URL*) so they don't conflict with this scheme.
2. While building the site for *DEFAULT_LANG* the translations of pages and articles are not generated, but their relations to the original content is kept via links to them.
3. For each non-default language a "sub-site" with a modified config [#conf]_ is created [#run]_, linking the translations to the originals (if available). The configured language code is appended to the *OUTPUT_PATH* and *SITEURL* of each sub-site.

If *HIDE_UNTRANSLATED_CONTENT* is True (default), content without a translation for a language is generated as hidden (for pages) or draft (for articles) for the corresponding language sub-site.

.. [#conf] for each language a config override is given in the *I18N_SUBSITES* dictionary
.. [#run] using a new *PELICAN_CLASS* instance and its ``run`` method, so each subsite could even have a different *PELICAN_CLASS* if specified in *I18N_SUBSITES* conf overrides.

Setting it up
-------------

For each extra used language code a language specific variables overrides dictionary must be given (but can be empty) in the *I18N_SUBSITES* dictionary::

    PLUGINS = ['i18n_subsites', ...]

    # mapping: language_code -> conf_overrides_dict
    I18N_SUBSITES = {
        'cz': {
	    'SITENAME': 'Hezkej blog',
	    }
	}

- The language code is the language identifier used in the *lang* metadata. It is appended to *OUTPUT_PATH* and *SITEURL* of each i18n sub-site.
- The i18n-ized config overrides dictionary may specify configuration variable overrides, e.g. a different *LOCALE*, *SITENAME*, *TIMEZONE*, etc. 
  However, it **must not** override *OUTPUT_PATH* and *SITEURL* as they are modified automatically by appending the language subpath.
  Most importantly, a localized [#local]_ theme can be specified in *THEME*.

.. [#local] It is convenient to add language buttons to your theme in addition to the translations links.

Usage notes
-----------
- It is **mandatory** to specify *lang* metadata for each article and page as *DEFAULT_LANG* is later changed for each sub-site.
- As with the original translations functionality, *slug* metadata is used to group translations. It is therefore often
  convenient to compensate for this by overriding the content url (which defaults to slug) using the *url* and *save_as* metadata.

Future plans
------------
- Instead of specifying a different theme for each language, the ``jinja2.ext.i18n`` extension could be used. 
  This would require some gettext and babel infrastructure.

Development
-----------
Please file issues, pull requests at https://github.com/smartass101/pelican-plugins