Add i18n system

.github/scripts/check-diff.py

@@ -0,0 +1,71 @@
+#!/usr/bin/env python3
+
+# SPDX-FileCopyrightText: 2019 Corentin Noël <tintou@noel.tf>
+#
+# SPDX-License-Identifier: GPL-3.0-only
+
+# Taken from https://github.com/elementary/actions/blob/master/gettext-template/check-diff.py
+
+import git
+import io
+
+def commit_to_repo(repo):
+    print('There are translation changes, committing changes to repository!')
+    files = repo.git.diff(None, name_only=True)
+    for f in files.split('\n'):
+        if f.endswith ('.po') or f.endswith ('.pot'):
+            repo.git.add(f)
+    repo.git.commit('-m', 'Update translation template')
+    infos = repo.remotes.origin.push()
+    has_error=False
+    error_msg=''
+    for info in infos:
+        if info.flags & git.remote.PushInfo.ERROR == git.remote.PushInfo.ERROR:
+            has_error=True
+            error_msg += info.summary
+    if has_error:
+        raise NameError('Unable to push to repository: ' + error_msg)
+
+print('Checking the repository for new translations...')
+repo = git.Repo('.')
+t = repo.head.commit.tree
+files = repo.git.diff(None, name_only=True)
+needs_commit=False
+
+for f in files.split('\n'):
+    if f.endswith ('.pot'):
+        raw_diff = repo.git.diff(t, f)
+        output = io.StringIO()
+        for line in raw_diff.splitlines():
+            if line.startswith ('+++'):
+                continue
+            if line.startswith ('---'):
+                continue
+            if line.startswith ('diff'):
+                continue
+            if line.startswith ('index'):
+                continue
+            if line.startswith ('@@'):
+                continue
+            if line.startswith (' '):
+                continue
+            if line.startswith ('+#:'):
+                continue
+            if line.startswith ('-#:'):
+                continue
+            if line.startswith ('-"'):
+                continue
+            if line.startswith ('+"'):
+                continue
+            if not line.strip():
+                continue
+            print(line, file=output)
+        if output.getvalue().strip():
+            print(f + " has changed!")
+            needs_commit = True
+        output.close()
+
+if needs_commit:
+    commit_to_repo(repo)
+else:
+    print('The translations are up-to-date!')