Hook scripts are executed with environment variables descriping current component.

Issue #790
Signed-off-by: Michal Čihař <michal@cihar.com>

docs/admin/continuous.rst

@@ -227,6 +227,19 @@ which has been changed.
 The script is executed with the current directory set to root of VCS repository
 for given component.
 
+Additionally following environment variables are available:
+
+``WL_VCS``
+    Used version control system.
+``WL_REPO``
+    Upstream repository URL.
+``WL_PATH``
+    Absolute path to VCS repository.
+``WL_FILEMASK``
+    File mask for current component.
+``WL_FILE_FORMAT``
+    File format used in current component.
+
 .. seealso::
 
     :setting:`POST_UPDATE_SCRIPTS`,

docs/changes.rst

@@ -15,6 +15,7 @@ Released on ? 2015.
 * Tigher control on fuzzy strings on translation upload.
 * Several URLs have changed, you might have to update your bookmarks.
 * Hook scripts are executed with VCS root as current directory.
+* Hook scripts are executed with environment variables descriping current component.
 
 weblate 2.3
 -----------

weblate/trans/models/subproject.py

@@ -1505,6 +1505,15 @@ class SubProject(models.Model, PercentMixin, URLMixin, PathMixin):
             if args:
                 command.extend(args)
             environment = get_clean_env()
+            if self.is_repo_link:
+                target = self.linked_subproject
+            else:
+                target = self
+            environment['WL_VCS'] = target.vcs
+            environment['WL_REPO'] = target.repo
+            environment['WL_PATH'] = target.get_path()
+            environment['WL_FILEMASK'] = self.filemask
+            environment['WL_FILE_FORMAT'] = self.file_format
             try:
                 subprocess.check_call(
                     command,