Contents

module SugarHigh
  module FileMutate
    module InsertContent
      def insert *args, &block
        File.insert_into self.path, *args, &block
      end

      module ClassMethods
        # insert_into 'my_file.txt', :after => 'Blip', :content => 'Hello
        # insert_into 'my_file.txt', 'Hello', :after => 'Blip' 
        # insert_into 'my_file.txt', :after => 'Blip' do 
        #  'Hello'
        # end  
        def insert_into file_name, *args, &block
          options = last_option args
          content = insertion_content options, *args, &block

          # no content to insert?
          return nil if content.blank? 

          file = begin
            get_file(file_name)
          rescue
            return nil
          end

          # already inserted?
          return nil if !options[:repeat] && file.has_content?(content)

          # find where to insert
          place, marker = if options[:before] 
              [ :before, options[:before] ]
            elsif options[:before_last]
              [ :before_last, options[:before_last] ]
            else
              [ :after, options[:after] ]
          end 

          return nil if !file.has_content?(marker)

          # do mutation
          res = file.mutate marker, place do
             content
          end
          res
        end

        def insertion_content options = {}, *args, &block
          case args.first
          when String
            args.first
          when Hash
            options[:content] || (yield if block)      
          else
            return yield if block
            raise ArgumentError, "You must supply content to insert, either as a String before the options hash, a :content option or a block" 
          end     
        end
      end
    end
  end
end

Version data entries

23 entries across 23 versions & 1 rubygems

Version	Path
sugar-high-0.4.4.1	lib/sugar-high/file_mutate/insert_content.rb
sugar-high-0.4.4	lib/sugar-high/file_mutate/insert_content.rb
sugar-high-0.4.3	lib/sugar-high/file_mutate/insert_content.rb