lib/kitabu/dependency.rb in kitabu-2.1.0 vs lib/kitabu/dependency.rb in kitabu-3.0.0

@@ -1,15 +1,21 @@
+# frozen_string_literal: true
+
 module Kitabu
   class Dependency
-    def self.kindlegen?
-      @kindlegen ||= `which kindlegen` && $?.success?
+    def self.calibre?
+      @calibre ||= `which ebook-convert` && $CHILD_STATUS.success?
     end
 
     def self.prince?
-      @prince ||= `which prince` && $?.success?
+      @prince ||= `which prince` && $CHILD_STATUS.success?
     end
 
-    def self.html2text?
-      @html2text ||= `which html2text` && $?.success?
+    def self.linux?
+      RUBY_PLATFORM.include?("linux")
+    end
+
+    def self.macos?
+      RUBY_PLATFORM.include?("darwin")
     end
   end
 end