Add script to update translations

scripts/update_translations.py

@@ -0,0 +1,82 @@
+#!/usr/bin/env python3
+
+import re
+import subprocess
+from pathlib import Path
+
+
+TRANS_DIR = Path('po')
+TRANS_TEMPLATE = TRANS_DIR / 'gajim_plugins.pot'
+REPO_DIR = Path.cwd()
+TRANSLATABLE_FILES = [
+    '*.py',
+    '*.ui',
+]
+
+
+if not TRANS_DIR.exists():
+    exit('Execute this script from the root dir')
+
+
+def template_is_equal(old_template_path: Path, new_template: str) -> bool:
+    with open(old_template_path, 'r') as f:
+        old_template = f.read()
+
+    pattern = r'"POT-Creation-Date: .*\n"'
+
+    old_template = re.sub(pattern, '', old_template, count=1)
+    new_template = re.sub(pattern, '', new_template, count=1)
+
+    return old_template == new_template
+
+
+def update_translation_template() -> bool:
+    paths: list[Path] = []
+    for file_path in TRANSLATABLE_FILES:
+        paths += list(REPO_DIR.rglob(file_path))
+
+    cmd = [
+        'xgettext',
+        '-o', '-',
+        '-c#',
+        '--from-code=utf-8',
+        '--keyword=Q_',
+        '--no-location',
+        '--sort-output',
+        '--package-name=Gajim Plugins'
+    ]
+
+    for path in paths:
+        cmd.append(str(path))
+
+    result = subprocess.run(cmd,
+                            cwd=REPO_DIR,
+                            text=True,
+                            check=True,
+                            capture_output=True)
+
+    template = result.stdout
+
+    if (TRANS_TEMPLATE.exists() and
+            template_is_equal(TRANS_TEMPLATE, template)):
+        # No new strings were discovered
+        return False
+
+    with open(TRANS_TEMPLATE, 'w') as f:
+        f.write(template)
+    return True
+
+
+def update_translation_files() -> None:
+    for file in TRANS_DIR.glob('*.po'):
+        subprocess.run(['msgmerge',
+                        '-U',
+                        '--sort-output',
+                        str(file),
+                        TRANS_TEMPLATE],
+                       cwd=REPO_DIR,
+                       check=True)
+
+
+update_translation_template()
+update_translation_files()