feat: add Package::Rpm module, tested on docker

Author: initdc

lib/rootfs/package/rpm.rb

@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+require "libexec"
+require_relative "../manifest"
+
+module RootFS
+  module Package
+    module Rpm
+      extend RootFS::Manifest
+      include RootFS::Manifest
+
+      # rubocop:disable Style/FormatStringToken
+
+      # https://docs.fedoraproject.org/en-US/fedora/latest/system-administrators-guide/RPM/
+      def installed
+        list = []
+        Libexec.each_line("rpm -qa --qf '%{name}\n'") do |line|
+          list.push(line.chomp)
+        end
+        list
+      end
+
+      def installed_by_user
+        list = []
+        Libexec.each_line("dnf repoquery --userinstalled") do |line|
+          pkg = line.chomp.split(":")[0].split("-")[0..-2].join("-")
+          list.push(pkg)
+        end
+        list
+      end
+
+      def generate_manifest(file = nil)
+        if file
+          Libexec.run("rpm -qa --qf '%{name}\t%{version}\n' | sort > #{file}")
+        else
+          Libexec.run("rpm -qa --qf '%{name}\t%{version}\n' | sort")
+        end
+      end
+
+      def can_install(any)
+        pkgs = any.instance_of?(Array) ? any : manifest_package(any)
+
+        ignores = []
+        Libexec.each_line("yum install #{pkgs.join(" ")}") do |line|
+          puts line
+          err_pre = "No match for argument: "
+          if line.include?(err_pre)
+            pkg = line.chomp.delete_prefix(err_pre)
+            ignores.push(pkg)
+          end
+        end
+        return pkgs if ignores.empty?
+
+        pkgs -= ignores
+        can_install(pkgs)
+      end
+    end
+  end
+end

lib/rootfs/package/rpm_test.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require_relative "rpm"
+
+class MyClass
+  extend RootFS::Package::Rpm
+  include RootFS::Package::Rpm
+end
+
+u = MyClass.new
+
+# pp u.installed
+# u.generate_manifest
+# u.generate_manifest(".rspec_status")
+# puts u.installed_by_user
+
+puts u.can_install(".rspec_status")