Add regexp_pattern checker to moderate

README.md

@@ -60,6 +60,12 @@ Moderate.configure do |config|
 
   # Exclude words from the default list (false positives)
   config.excluded_words = ["good"]
+
+  # Matchind text_field with blacklist regexp pattern
+  config.blacklist_regexp_pattern = /.*bad_pattern.*/
+
+  # Matchind text_field with whitelist regexp pattern
+  config.whitelist_regexp_pattern = /.*good_pattern.*/
 end
 ```
 

lib/moderate.rb

@@ -23,12 +23,18 @@ def configure
   end
 
   class Configuration
-    attr_accessor :error_message, :additional_words, :excluded_words
+    ACCESSORS = %i[
+      error_message additional_words excluded_words blacklist_regexp_pattern whitelist_regexp_pattern
+    ].freeze
+
+    attr_accessor(*ACCESSORS)
 
     def initialize
       @error_message = "contains moderatable content (bad words)"
       @additional_words = []
       @excluded_words = []
+      @blacklist_regexp_pattern = nil
+      @whitelist_regexp_pattern = nil
     end
   end
 end

lib/moderate/text.rb

@@ -6,6 +6,9 @@ class << self
       def bad_words?(text)
         return false if text.blank?
 
+        return true if match_blacklist_regexp_pattern?(text)
+        return true if not_match_whitelist_regexp_pattern?(text)
+
         @words_set ||= Set.new(compute_word_list)
         text.downcase.split(/\W+/).any? { |word| @words_set.include?(word) }
       end
@@ -19,8 +22,8 @@ def compute_word_list
           words
         end
 
-        result = (@default_words + Moderate.configuration.additional_words -
-                 Moderate.configuration.excluded_words).to_set
+        result = (@default_words + configuration.additional_words -
+                 configuration.excluded_words).to_set
         logger.debug("[moderate gem] Final word list size: #{result.size}")
         result
       end
@@ -33,6 +36,22 @@ def reset_word_list!
       def logger
         @logger ||= defined?(Rails) ? Rails.logger : Logger.new($stdout)
       end
+
+      def configuration
+        @configuration ||= Moderate.configuration
+      end
+
+      def match_blacklist_regexp_pattern?(text)
+        pattern = configuration.blacklist_regexp_pattern
+
+        pattern.is_a?(Regexp) && pattern.match?(text)
+      end
+
+      def not_match_whitelist_regexp_pattern?(text)
+        pattern = configuration.whitelist_regexp_pattern
+
+        pattern.is_a?(Regexp) && !pattern.match?(text)
+      end
     end
   end
 end

lib/moderate/text_validator.rb

@@ -22,6 +22,5 @@ def validate_each(record, attribute, value)
         end
       end
     end
-
   end
 end