Add CLI

Related to rpm-software-management#6

Co-authored-by: Jakub Kadlcik <frostyx@email.cz>
Signed-off-by: Matej Focko <mfocko@redhat.com>

fedora-distro-aliases.spec

@@ -52,6 +52,7 @@ Summary:        %{summary}
 %files -n python3-fedora-distro-aliases -f %{pyproject_files}
 %license LICENSES/GPL-2.0-or-later.txt
 %doc README.md
+%{_bindir}/resolve-fedora-aliases
 
 
 %changelog

fedora_distro_aliases/cli.py

@@ -0,0 +1,66 @@
+import argparse
+import sys
+
+from fedora_distro_aliases import get_distro_aliases
+
+GETTERS = {
+    "namever": lambda x: x.namever,
+    "branch": lambda x: x.branch,
+    "version": lambda x: x.version,
+}
+
+
+def run(output_type: str, aliases: list[str]):
+    getter = GETTERS[output_type]
+    distro_aliases = get_distro_aliases()
+
+    resolved_aliases: set[str] = set()
+    for alias in aliases:
+        resolved_aliases.update(getter(x) for x in distro_aliases[alias])
+
+    print(" ".join(resolved_aliases))
+
+
+def setup_parser() -> argparse.ArgumentParser:
+    parser = argparse.ArgumentParser(
+        description="""Resolve the requested aliases.
+
+        Resolve each of the ALIASES and print them out.
+
+        This script prints out only unique aliases i.e., it is not
+        possible to obtain the same alias twice in the output.
+        """
+    )
+
+    # Handle the output type
+    parser.add_argument(
+        "-o", "--output-type",
+        choices=["namever", "branch", "version"],
+        default="namever",
+        help="""Choose the output format of the script.
+
+        Available options are namever (e.g., ‹fedora-40›), branch (e.g., ‹f40›),
+        or version (e.g., ‹40›).
+        """
+    )
+
+    # Handle the aliases themselves
+    parser.add_argument(
+        "aliases",
+        nargs="+"
+    )
+
+    return parser
+
+
+def main(argv=sys.argv[1:]):
+    argv = sys.argv[1:]
+
+    parser = setup_parser()
+    args = parser.parse_args(argv)
+
+    run(args.output_type, args.aliases)
+
+
+if __name__ == '__main__':
+    main()

setup.py

@@ -43,4 +43,10 @@
     packages=find_packages(),
     include_package_data=True,
     zip_safe=False,
+    py_modules=["cli"],
+    entry_points={
+        "console_scripts": [
+            'resolve-fedora-aliases = fedora_distro_aliases.cli:main'
+        ],
+    },
 )