jw.pkg.cmds.distro.lib.rpm: Add module

Add a place to bundle utilities for RPM-backed distributions.

Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/cmds/distro/lib/rpm.py

@@ -0,0 +1,34 @@
+# -*- coding: utf-8 -*-
+
+from typing import Iterable
+
+from ....lib.util import run_cmd, run_sudo
+
+from .Package import Package
+
+async def run_rpm(*args, sudo=False):
+    cmd = ['/usr/bin/rpm']
+    cmd.extend(args)
+    # FIXME: usage of run_xxx() (unpacked vs regular list is highly inconsistent)
+    if sudo:
+        return await run_sudo(cmd)
+    return await run_cmd(*cmd)
+
+async def all_installed_packages() -> Iterable[Package]:
+    ret: list[Package] = []
+    opts: list[str] = []
+    query_tags: list[str] = []
+    query_tags.append('Name')
+    query_tags.append('Vendor')
+    query_tags.append('Packager')
+    query_tags.append('URL')
+    opts.append('--queryformat')
+    tag_str = '|'.join([f'%{{{tag}}}' for tag in query_tags]) + r'\n'
+    opts.append(tag_str)
+    package_list_str, stderr = await run_rpm('-qa', *opts, sudo=False)
+    for package_str in package_list_str.split('\n'):
+        if not package_str:
+            continue
+        tags = package_str.split('|')
+        ret.append(Package(name=tags[0], vendor=tags[1], packager=tags[2], url=tags[3]))
+    return ret