Add support for kernel_shorthand pattern

Add a test

Signed-off-by: ziad hany <ziadhany2016@gmail.com>

Author: ziadhany

src/packageurl/contrib/url2purl.py

@@ -756,8 +756,15 @@ def build_cgit_purl(url):
     https://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev.git/commit/?h=for-next&id=bd771cf5c4254511cc4abb88f3dab3bd58bdf8e8
     https://cgit.git.savannah.gnu.org/cgit/uddf.git/commit/?id=98c41e131dc952aee43d4ec392b80ca4c426be8d
     https://gitweb.gentoo.org/dev/darkside.git/commit/?id=8d4b0836f3b6ab7075212926d9aad0b50246d825
+    https://git.kernel.org/stable/c/9a9a8fe26751334b7739193a94eba741073b8a55
     """
 
+    kernel_shorthand = (
+        r"^https?://(?P<domain>git\.kernel\.org)/"
+        r"(?P<name>[^/]+)/c/"
+        r"(?P<version>[0-9a-fA-F]{7,64})/?$"
+    )
+
     cgit_project_pattern = (
         r"^https?://"
         r"(?P<domain>[^/]+)/"
@@ -772,24 +779,30 @@ def build_cgit_purl(url):
         r"(?:&.*)?$"
     )
 
-    commit_match = re.search(cgit_project_pattern, url)
-    if commit_match:
-        domain = commit_match.group("domain")
-        namespace = f"{domain}/{commit_match.group('namespace')}"
-        return PackageURL(
-            type="generic",
-            namespace=namespace,
-            name=commit_match.group("name"),
-            version=commit_match.group("version"),
-            qualifiers={},
-            subpath="",
-        )
+    if match := re.search(kernel_shorthand, url):
+        res = match.groupdict()
+        namespace = res["domain"]
+    elif match := re.search(cgit_project_pattern, url):
+        res = match.groupdict()
+        namespace = f"{res['domain']}/{res['namespace']}"
+    else:
+        return None
+
+    return PackageURL(
+        type="generic",
+        namespace=namespace,
+        name=res["name"],
+        version=res["version"],
+        qualifiers={},
+        subpath="",
+    )
 
 
 GITILES_DOMAINS = [
     r"android\.googlesource\.com",
     r"aomedia\.googlesource\.com",
     r"chromium\.googlesource\.com",
+    r"gerrit\.googlesource\.com",
 ]
 GITILES_ROUTE_REGEX = build_route_regex(GITILES_DOMAINS)
 

tests/contrib/data/url2purl.json

@@ -289,6 +289,7 @@
   "https://cgit.git.savannah.gnu.org/cgit/uddf.git/commit/?id=98c41e131dc952aee43d4ec392b80ca4c426be8d": "pkg:generic/cgit.git.savannah.gnu.org/cgit/uddf@98c41e131dc952aee43d4ec392b80ca4c426be8d",
   "https://git.kernel.org/pub/scm/virt/kvm/mst/qemu.git/commit/?id=7457fe9541b5162f285454947448d553a5d5a531": "pkg:generic/git.kernel.org/pub/scm/virt/kvm/mst/qemu@7457fe9541b5162f285454947448d553a5d5a531",
   "https://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev.git/commit/?h=for-next&id=bd771cf5c4254511cc4abb88f3dab3bd58bdf8e8": "pkg:generic/git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev@bd771cf5c4254511cc4abb88f3dab3bd58bdf8e8",
+  "https://git.kernel.org/stable/c/9a9a8fe26751334b7739193a94eba741073b8a55": "pkg:generic/git.kernel.org/stable@9a9a8fe26751334b7739193a94eba741073b8a55",
 
   "https://gitweb.gentoo.org/dev/darkside.git/commit/?id=8d4b0836f3b6ab7075212926d9aad0b50246d825": "pkg:generic/gitweb.gentoo.org/dev/darkside@8d4b0836f3b6ab7075212926d9aad0b50246d825",
   "https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=f73ae47c5e48010f504f3f55567152258f3013ae": "pkg:generic/gitweb.gentoo.org/repo/gentoo@f73ae47c5e48010f504f3f55567152258f3013ae",