feat: use SHA256SUMS to get Ubuntu release

Add URL template, replace {val} will get URL
TODO:
  define URL func
  use HEAD to check link valid

Author: initdc

lib/rootfs/distro/ubuntu.rb

@@ -7,6 +7,32 @@
 module RootFS
   module Distro
     module Ubuntu
+      Methods = {
+        arch?: ARCH,
+        edition?: EDITION,
+        dev?: DEV,
+        interim?: INTERIM,
+        lts?: LTS,
+        esm?: ESM
+      }.freeze
+
+      Methods.each do |name, data|
+        if data.instance_of?(Array)
+          define_method(name) do |any = nil|
+            str = any.to_s
+            data.include?(str)
+          end
+        elsif data.instance_of?(Hash)
+          define_method(name) do |any = nil|
+            str = any.instance_of?(0.1.class) ? format("%.2f", any) : any.to_s
+            data.each do |code, ver|
+              return true if str == code.to_s
+              return true if str.start_with?(ver)
+            end
+            false
+          end
+        end
+      end
     end
   end
 end

lib/rootfs/distro/ubuntu/edition.rb

@@ -4,11 +4,28 @@ module RootFS
   module Distro
     module Ubuntu
       # https://ubuntu.com/download
-
       # https://wiki.ubuntu.com/Releases
+
       # http://releases.ubuntu.com/
+      # http://cdimage.ubuntu.com/
       # https://cloud-images.ubuntu.com/
 
+      EDITION = %w[
+        desktop
+        server
+        base
+        cloud
+        minimal
+      ].freeze
+
+      DEV = {
+        lunar: "23.04"
+      }.freeze
+
+      INTERIM = {
+        kinetic: "22.10"
+      }.freeze
+
       LTS = {
         jammy: "22.04",
         focal: "20.04",
@@ -20,21 +37,7 @@ module Ubuntu
         trusty: "14.04"
       }.freeze
 
-      DEV = {
-        lunar: "23.04",
-        kinetic: "22.10"
-      }.freeze
-
-      CODENAME_VERSION = {}.merge(DEV, LTS, ESM).freeze
-
-      def lts?(any)
-        str = any.to_s
-        LTS.each do |code, ver|
-          return true if str == code.to_s
-          return true if str.start_with?(ver)
-        end
-        false
-      end
+      CODENAME_VERSION = {}.merge(DEV, INTERIM, LTS, ESM).freeze
     end
   end
 end

lib/rootfs/distro/ubuntu/url.rb

@@ -3,26 +3,31 @@
 module RootFS
   module Distro
     module Ubuntu
-      # https://ubuntu.com/download
-
-      # https://wiki.ubuntu.com/Releases
       # http://releases.ubuntu.com/
+      # http://cdimage.ubuntu.com/
       # https://cloud-images.ubuntu.com/
 
-      EDITION_RELEASE_URL = {
-        Desktop: "http://cdimage.ubuntu.com/releases/",
-        Server: "http://cdimage.ubuntu.com/releases/",
-        Base: "http://cdimage.ubuntu.com/ubuntu-base/releases/",
-        Cloud: "https://cloud-images.ubuntu.com/releases/",
-        Minimal: "https://cloud-images.ubuntu.com/minimal/releases/"
-      }.freeze
-
-      EDITION_DAILY_URL = {
-        Desktop: "http://cdimage.ubuntu.com/",
-        Server: "http://cdimage.ubuntu.com/ubuntu-server/",
-        Base: "http://cdimage.ubuntu.com/ubuntu-base/",
-        Cloud: "https://cloud-images.ubuntu.com/",
-        Minimal: "https://cloud-images.ubuntu.com/minimal/daily/"
+      EDITION_URL = {
+        desktop: {
+          release: "http://cdimage.ubuntu.com/releases/{version}/release/SHA256SUMS",
+          daily: "http://cdimage.ubuntu.com/{codename}/daily-preinstalled/current/SHA256SUMS"
+        },
+        server: {
+          release: "http://cdimage.ubuntu.com/releases/{version}/release/SHA256SUMS",
+          daily: "http://cdimage.ubuntu.com/ubuntu-server/{codename}/daily-preinstalled/current/SHA256SUMS"
+        },
+        base: {
+          release: "http://cdimage.ubuntu.com/ubuntu-base/releases/{version}/release/SHA256SUMS",
+          daily: "http://cdimage.ubuntu.com/ubuntu-base/{codename}/daily/current/SHA256SUMS"
+        },
+        cloud: {
+          release: "https://cloud-images.ubuntu.com/releases/{version}/release/SHA256SUMS",
+          daily: "https://cloud-images.ubuntu.com/{codename}/current/SHA256SUMS"
+        },
+        minimal: {
+          release: "https://cloud-images.ubuntu.com/minimal/releases/{codename}/release/SHA256SUMS",
+          daily: "https://cloud-images.ubuntu.com/minimal/daily/{codename}/current/SHA256SUMS"
+        }
       }.freeze
     end
   end

lib/rootfs/distro/ubuntu_test.rb

@@ -9,9 +9,18 @@ class MyClass
 
 u = MyClass.new
 
+p u.arch?("armv8")
+p u.arch?("amd64")
+p u.edition?("cloud")
+p u.dev?(23.04)
+p u.dev?("lunar")
+p u.interim?(22.10)
+p u.interim?("22.10")
+p u.interim?("kinetic")
 p u.lts?("focal")
 p u.lts?("20.04.5")
 p u.lts?("20.04")
+p u.esm?(16.04)
 p u.lts?("20")
 p u.lts?("20.10")
 p MyClass::CODENAME_VERSION