# Wrapper for loading templates from eggs via pkg_resources.resource_string.

try:

    from pkg_resources import resource_string

except ImportError:

    resource_string = None

from django.template import TemplateDoesNotExist

from django.conf import settings

def load_template_source(template_name, template_dirs=None):

    """

    Loads templates from Python eggs via pkg_resource.resource_string.

    For every installed app, it tries to get the resource (app, template_name).

    """

    if resource_string is not None:

        pkg_name = 'templates/' + template_name

        for app in settings.INSTALLED_APPS:

            try:

                return (resource_string(app, pkg_name).decode(settings.FILE_CHARSET), 'egg:%s:%s' % (app, pkg_name))

            except:

                pass

    raise TemplateDoesNotExist, template_name

load_template_source.is_usable = resource_string is not None