Add support for purl to download URL Batch 2

Signed-off-by: Tushar Goel <tushar.goel.dav@gmail.com>

Author: TG1999

src/packageurl/contrib/purl2url.py

@@ -513,6 +513,20 @@ def build_swift_download_url(purl):
     return f"https://{namespace}/{name}/archive/{version}.zip"
 
 
+@download_router.route("pkg:luarocks/.*")
+def build_luarocks_download_url(purl):
+    """
+    Return a LuaRocks download URL from the `purl` string.
+    """
+    purl_data = PackageURL.from_string(purl)
+
+    name = purl_data.name
+    version = purl_data.version
+
+    if name and version:
+        return f"https://luarocks.org/{name}-{version}.src.rock"
+
+
 def get_repo_download_url(purl):
     """
     Return ``download_url`` if present in ``purl`` qualifiers or

tests/contrib/test_purl2url.py

@@ -105,6 +105,8 @@ def test_purl2url_get_download_url():
         "pkg:pub/http@0.13.3": "https://pub.dev/api/archives/http-0.13.3.tar.gz",
         "pkg:swift/github.com/Alamofire/Alamofire@5.4.3": "https://github.com/Alamofire/Alamofire/archive/5.4.3.zip",
         "pkg:swift/github.com/RxSwiftCommunity/RxFlow@2.12.4": "https://github.com/RxSwiftCommunity/RxFlow/archive/2.12.4.zip",
+        "pkg:luarocks/luasocket@3.1.0-1": "https://luarocks.org/luasocket-3.1.0-1.src.rock",
+        "pkg:luarocks/hisham/luafilesystem@1.8.0-1": "https://luarocks.org/luafilesystem-1.8.0-1.src.rock",
         # From `download_url` qualifier
         "pkg:github/yarnpkg/yarn@1.3.2?download_url=https://github.com/yarnpkg/yarn/releases/download/v1.3.2/yarn-v1.3.2.tar.gz&version_prefix=v": "https://github.com/yarnpkg/yarn/releases/download/v1.3.2/yarn-v1.3.2.tar.gz",
         "pkg:generic/lxc-master.tar.gz?download_url=https://salsa.debian.org/lxc-team/lxc/-/archive/master/lxc-master.tar.gz": "https://salsa.debian.org/lxc-team/lxc/-/archive/master/lxc-master.tar.gz",