refactor: decode_cpe22

Signed-off-by: Meet Soni <[email protected]>

Author: inosmeet

cve_bin_tool/sbom_manager/parse.py

@@ -364,25 +364,6 @@ def parse_ext_ref(self, ext_ref) -> (str | None, str | None, str | None):
             decoded.get("cpe22Type", decoded.get("purl", (None, None, None))),
         )
 
-    def decode_cpe22(self, cpe22) -> (str | None, str | None, str | None):
-        """
-        Decode a CPE 2.2 formatted string to extract vendor, product, and version information.
-
-        Args:
-        - cpe22 (str): CPE 2.2 formatted string.
-
-        Returns:
-        - Tuple[str | None, str | None, str | None]: A tuple containing the vendor, product, and version
-          information extracted from the CPE 2.2 string, or None if the information is incomplete.
-
-        """
-
-        # split on `:` only if it's not escaped
-        cpe = re.split(r"(?<!\\):", cpe22)
-        vendor, product, version = cpe[2], cpe[3], cpe[4]
-        # Return available data, convert empty fields to None
-        return [vendor or None, product or None, version or None]
-
     def decode_purl(self, purl) -> (str | None, str | None, str | None):
         """
         Decode a Package URL (purl) to extract version information.

cve_bin_tool/util.py

@@ -544,3 +544,23 @@ def decode_cpe23(cpe23) -> list:
     vendor, product, version = cpe[3], cpe[4], cpe[5]
     # Return available data, convert empty fields to None
     return [vendor or None, product or None, version or None]
+
+
+def decode_cpe22(self, cpe22) -> list:
+    """
+    Decode a CPE 2.2 formatted string to extract vendor, product, and version information.
+
+    Args:
+    - cpe22 (str): CPE 2.2 formatted string.
+
+    Returns:
+    - Tuple[str | None, str | None, str | None]: A tuple containing the vendor, product, and version
+      information extracted from the CPE 2.2 string, or None if the information is incomplete.
+
+    """
+
+    # split on `:` only if it's not escaped
+    cpe = re.split(r"(?<!\\):", cpe22)
+    vendor, product, version = cpe[2], cpe[3], cpe[4]
+    # Return available data, convert empty fields to None
+    return [vendor or None, product or None, version or None]