lib/html2rss/attribute_post_processors/substring.rb in html2rss-0.9.0 vs lib/html2rss/attribute_post_processors/substring.rb in html2rss-0.10.0

@@ -1,8 +1,11 @@
+# frozen_string_literal: true
+
 module Html2rss
   module AttributePostProcessors
-    ## Returns a defined part of a String.
+    ##
+    # Returns a defined part of a String.
     #
     # Both parameters must be an Integer and they can be negative.
     # The +end+ parameter can be omitted, in that case it will not cut the
     # String at the end.
     #
@@ -24,19 +27,26 @@
     #          end: 6
     #
     # Would return:
     #    'bar'
     class Substring
+      ##
+      # @param value [String] The original string to extract a substring from.
+      # @param env [Item::Context] Context object providing additional environment details.
       def initialize(value, env)
         @value = value
         @options = env[:options]
       end
 
       ##
-      # @return [String]
+      # Extracts the substring from the original string based on the provided start and end indices.
+      #
+      # @return [String] The extracted substring.
       def get
-        ending = @options.fetch(:end, @value.length).to_i
-        @value[@options[:start].to_i..ending]
+        start_index = @options[:start].to_i
+        end_index = @options[:end]&.to_i || @value.length
+
+        @value[start_index..end_index]
       end
     end
   end
 end