enhance supported format check (#5634) (#5640)

Signed-off-by: function2 <function2-llx@outlook.com>

Fixes #5634.


### Types of changes
<!--- Put an `x` in all the boxes that apply, and remove the not
applicable items -->
- [ ] Non-breaking change (fix or new feature that would not break
existing functionality).
- [x] Breaking change (fix or new feature that would cause existing
functionality to change).
- [x] New tests added to cover the changes.
- [ ] Integration tests passed locally by running `./runtests.sh -f -u
--net --coverage`.
- [ ] Quick tests passed locally by running `./runtests.sh --quick
--unittests --disttests`.
- [x] In-line docstrings updated.
- [x] Documentation updated, tested `make html` command in the `docs/`
folder.

Signed-off-by: function2 <function2-llx@outlook.com>

Author: function2-llx

monai/data/utils.py

@@ -1099,8 +1099,8 @@ def is_supported_format(filename: Union[Sequence[PathLike], PathLike], suffixes:
     """
     filenames: Sequence[PathLike] = ensure_tuple(filename)
     for name in filenames:
-        tokens: Sequence[str] = PurePath(name).suffixes
-        if len(tokens) == 0 or all("." + s.lower() not in "".join(tokens) for s in suffixes):
+        full_suffix = "".join(map(str.lower, PurePath(name).suffixes))
+        if all(f".{s.lower()}" not in full_suffix for s in suffixes):
             return False
 
     return True

tests/test_is_supported_format.py

@@ -27,9 +27,11 @@
 
 TEST_CASE_6 = [{"filename": "1.3.12.2.1107.5.4.4.145.nii.gz", "suffixes": ["nii.gz"]}, True]
 
+TEST_CASE_7 = [{"filename": "test.PNG", "suffixes": ["bmp", "png"]}, True]
+
 
 class TestIsSupportedFormat(unittest.TestCase):
-    @parameterized.expand([TEST_CASE_1, TEST_CASE_2, TEST_CASE_3, TEST_CASE_4, TEST_CASE_5, TEST_CASE_6])
+    @parameterized.expand([TEST_CASE_1, TEST_CASE_2, TEST_CASE_3, TEST_CASE_4, TEST_CASE_5, TEST_CASE_6, TEST_CASE_7])
     def test_value(self, input_param, result):
         self.assertEqual(is_supported_format(**input_param), result)