feat: add XsUri.is_bom_link to validate bom_link

Signed-off-by: Saquib Saifee <[email protected]>

Author: Saquib Saifee

cyclonedx/model/__init__.py

@@ -791,6 +791,15 @@ def make_bom_link(
         bom_ref_part = f'#{url_quote(str(bom_ref))}' if bom_ref else ''
         return cls(f'urn:cdx:{serial_number}/{version}{bom_ref_part}')
 
+    def is_bom_link(self) -> bool:
+        """
+        Check if the URI is a BOM-Link.
+
+        Returns:
+            `bool`
+        """
+        return self._uri.startswith('urn:cdx:')
+
 
 @serializable.serializable_class
 class ExternalReference:

tests/test_model.py

@@ -556,6 +556,10 @@ def test_make_bom_link_with_bom_ref(self) -> None:
                                        2, BomRef('componentA#sub-componentB%2'))
         self.assertEqual(bom_link.uri, 'urn:cdx:e5a93409-fd7c-4ffa-bf7f-6dc1630b1b9d/2#componentA%23sub-componentB%252')
 
+    def test_is_bom_link(self) -> None:
+        self.assertTrue(XsUri('urn:cdx:e5a93409-fd7c-4ffa-bf7f-6dc1630b1b9d/2').is_bom_link())
+        self.assertFalse(XsUri('http://example.com/resource').is_bom_link())
+
 
 class TestModelProperty(TestCase):