Format JSON output files with indentation

picard/script/__init__.py

@@ -219,15 +219,20 @@ class PicardScript():
         new_object._set_new_id()
         return new_object
 
-    def to_json(self):
+    def to_json(self, indented=False):
         """Converts the properties of the script object to a JSON formatted string.  Note that only property
         names listed in `JSON_PROPERTIES` will be included in the output.
 
+        Args:
+            indented (bool): Indent the output.
+
         Returns:
             str: The properties of the script object formatted as a JSON string.
         """
         items = {key: getattr(self, key) for key in dir(self) if key in self.JSON_OUTPUT}
-        return json.dumps(items)
+        if indented:
+            return json.dumps(items, indent=4, sort_keys=True)
+        return json.dumps(items, sort_keys=True)
 
     @classmethod
     def create_from_json(cls, json_string):

picard/ui/scripteditor.py

@@ -667,7 +667,7 @@ class ScriptEditorPage(PicardDialog):
                     filename = name
                 log.debug('Exporting naming script file: %s' % filename)
                 if file_type == self.FILE_TYPE_PACKAGE:
-                    script_text = script_item.to_json()
+                    script_text = script_item.to_json(indented=True)
                 try:
                     with open(filename, 'w', encoding='utf8') as o_file:
                         o_file.write(script_text + '\n')

test/test_scriptclasses.py

@@ -154,3 +154,14 @@ class ScriptClassesTest(PicardTestCase):
                          '"version": ""'
                          '}'
                          )
+        self.assertEqual(test_script.to_json(indented=True),
+                         '{\n'
+                         '    "author": "Script author",\n'
+                         '    "description": "Script description",\n'
+                         '    "last_updated": "2021-04-26",\n'
+                         '    "license": "",\n'
+                         '    "script": "Script text",\n'
+                         '    "title": "Script 1",\n'
+                         '    "version": ""\n'
+                         '}'
+                         )