Export template filename to hooks

Signed-off-by: Michal Čihař <michal@cihar.com>

docs/admin/continuous.rst

@@ -258,6 +258,10 @@ Additionally following environment variables are available:
 
     File mask for current component.
 
+.. envvar:: WL_TEMPLATE
+
+    File name of template for monolingual translations (can be empty).
+
 .. envvar:: WL_FILE_FORMAT
 
     File format used in current component.

weblate/trans/scripts.py

@@ -72,6 +72,7 @@ def run_hook(component, translation, script, *args):
         environment['WL_REPO'] = target.repo
         environment['WL_PATH'] = target.get_path()
         environment['WL_FILEMASK'] = component.filemask
+        environment['WL_TEMPLATE'] = component.template
         environment['WL_FILE_FORMAT'] = component.file_format
         if translation:
             environment['WL_LANGUAGE'] = translation.language_code