Contents

# encoding: utf-8

module CassandraMapper #:nodoc:
  module Support
    module Multibyte #:nodoc:
      if Kernel.const_defined?(:Encoding)
        # Returns a regular expression that matches valid characters in the current encoding
        def self.valid_character
          VALID_CHARACTER[Encoding.default_external.to_s]
        end
      else
        def self.valid_character
          case $KCODE
          when 'UTF8'
            VALID_CHARACTER['UTF-8']
          when 'SJIS'
            VALID_CHARACTER['Shift_JIS']
          end
        end
      end

      if 'string'.respond_to?(:valid_encoding?)
        # Verifies the encoding of a string
        def self.verify(string)
          string.valid_encoding?
        end
      else
        def self.verify(string)
          if expression = valid_character
            # Splits the string on character boundaries, which are determined based on $KCODE.
            string.split(//).all? { |c| expression =~ c }
          else
            true
          end
        end
      end

      # Verifies the encoding of the string and raises an exception when it's not valid
      def self.verify!(string)
        raise EncodingError.new("Found characters with invalid encoding") unless verify(string)
      end

      if 'string'.respond_to?(:force_encoding)
        # Removes all invalid characters from the string.
        #
        # Note: this method is a no-op in Ruby 1.9
        def self.clean(string)
          string
        end
      else
        def self.clean(string)
          if expression = valid_character
            # Splits the string on character boundaries, which are determined based on $KCODE.
            string.split(//).grep(expression).join
          else
            string
          end
        end
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
cassandra_mapper-0.0.1	lib/cassandra_mapper/support/multibyte/utils.rb