Fix codify rel path (#1867)

* cherry-picked from main branch of 3.0 dev

doc/release_notes/index.rst

@@ -2,6 +2,7 @@
 Release notes
 =============
 
+.. include:: v2.4.3.rst
 .. include:: v2.4.0.rst
 .. include:: v2.3.0.rst
 .. include:: v2.2.0.rst

doc/release_notes/v2.4.3.rst

@@ -0,0 +1,7 @@
+Version 2.4.3
+==============
+
+Fixes
+-----
+
+* Fixed pydicom codify error when relative path did not exist

pydicom/cli/main.py

@@ -137,7 +137,8 @@ def filespec_parser(filespec: str) -> List[Tuple[Dataset, Any]]:
     if not pydicom_filename:
         try:
             char_filenames = get_charset_files(filename)
-            pydicom_filename = char_filenames[0]
+            if char_filenames:
+                pydicom_filename = char_filenames[0]
         except NotImplementedError:  # will get this if absolute path passed
             pass
 

pydicom/tests/test_util.py

@@ -171,6 +171,13 @@ def test_code_file(self, capsys):
         out, err = capsys.readouterr()
         assert r"c:\temp\testout.dcm" in out
 
+    def test_code_relative_filename(self, capsys):
+        """Test utils.codify.code_file with a relative path that doesn't exist"""
+        # regression test for #1865
+        args = ["XXxUN_sequenceXX.dcm"]  # file that doesn't exist
+        with pytest.raises(SystemExit):
+            codify_main(100, args)
+
     def test_code_dataelem_at(self):
         """Test utils.codify.code_dataelem"""
         elem = DataElement(0x00000901, 'AT', (0x1234, 0x5678))

pyproject.toml

@@ -35,7 +35,7 @@ license = {text = "MIT"}
 name = "pydicom"
 readme = "README.md"
 requires-python = ">=3.7"
-version = "2.4.2"
+version = "2.4.3"
 
 
 [project.optional-dependencies]