Fix bug with emojis in the filename (#263)

bdfr/file_name_formatter.py

@@ -44,7 +44,7 @@ class FileNameFormatter:
         for key in attributes.keys():
             if re.search(fr'(?i).*{{{key}}}.*', result):
                 key_value = str(attributes.get(key, 'unknown'))
-                key_value = bytes(key_value, 'utf-8').decode('unicode-escape')
+                key_value = FileNameFormatter._convert_unicode_escapes(key_value)
                 result = re.sub(fr'(?i){{{key}}}', key_value, result,)
                 logger.log(9, f'Found key string {key} in name')
 
@@ -55,6 +55,16 @@ class FileNameFormatter:
 
         return result
 
+    @staticmethod
+    def _convert_unicode_escapes(in_string: str) -> str:
+        pattern = re.compile(r'(\\u\d{4})')
+        matches = re.search(pattern, in_string)
+        if matches:
+            for match in matches.groups():
+                converted_match = bytes(match, 'utf-8').decode('unicode-escape')
+                in_string = in_string.replace(match, converted_match)
+        return in_string
+
     @staticmethod
     def _generate_name_dict_from_submission(submission: Submission) -> dict:
         submission_attributes = {

bdfr/tests/test_file_name_formatter.py

@@ -297,12 +297,23 @@ def test_multilevel_folder_scheme(
     assert len(result.parents) == (len(expected.split('/')) + 1)
 
 
-@pytest.mark.online
-@pytest.mark.reddit
-@pytest.mark.parametrize(('test_submission_id', 'test_file_scheme', 'expected'), (
-    ('mecwk7', '{TITLE}', 'My cat’s paws are so cute'),  # Unicode escape in title
+@pytest.mark.parametrize(('test_name_string', 'expected'), (
+    ('test', 'test'),
+    ('😍', '😍'),
+    ('test😍', 'test😍'),
+    ('test😍 ’', 'test😍 ’'),
+    ('test😍 \\u2019', 'test😍 ’'),
 ))
-def test_edge_case_names(test_submission_id: str, test_file_scheme: str, expected: str, reddit_instance: praw.Reddit):
-    test_submission = reddit_instance.submission(id=test_submission_id)
-    result = FileNameFormatter._format_name(test_submission, test_file_scheme)
+def test_preserve_emojis(test_name_string: str, expected: str, submission: MagicMock):
+    submission.title = test_name_string
+    result = FileNameFormatter._format_name(submission, '{TITLE}')
+    assert result == expected
+
+
+@pytest.mark.parametrize(('test_string', 'expected'), (
+    ('test \\u2019', 'test ’'),
+    ('My cat\\u2019s paws are so cute', 'My cat’s paws are so cute'),
+))
+def test_convert_unicode_escapes(test_string: str, expected: str):
+    result = FileNameFormatter._convert_unicode_escapes(test_string)
     assert result == expected