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Viewing changes to vendor/rails/activesupport/lib/active_support/multibyte/utils.rb

  • Committer: Michael Forrest
  • Date: 2010-10-15 16:28:50 UTC
  • Revision ID: michael.forrest@canonical.com-20101015162850-tj2vchanv0kr0dun
refroze gems

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vendor/rails/activesupport/lib/active_support/multibyte/utils.rb
 
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# encoding: utf-8
 
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module ActiveSupport #:nodoc:
 
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  module Multibyte #:nodoc:
 
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    if Kernel.const_defined?(:Encoding)
 
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      # Returns a regular expression that matches valid characters in the current encoding
 
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      def self.valid_character
 
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        VALID_CHARACTER[Encoding.default_external.to_s]
 
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      end
 
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    else
 
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      def self.valid_character
 
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        case $KCODE
 
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        when 'UTF8'
 
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          VALID_CHARACTER['UTF-8']
 
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        when 'SJIS'
 
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          VALID_CHARACTER['Shift_JIS']
 
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        end
 
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      end
 
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    end
 
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    if 'string'.respond_to?(:valid_encoding?)
 
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      # Verifies the encoding of a string
 
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      def self.verify(string)
 
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        string.valid_encoding?
 
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      end
 
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    else
 
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      def self.verify(string)
 
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        if expression = valid_character
 
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          for c in string.split(//)
 
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            return false unless expression.match(c)
 
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          end
 
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        end
 
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        true
 
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      end
 
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    end
 
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    # Verifies the encoding of the string and raises an exception when it's not valid
 
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    def self.verify!(string)
 
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      raise EncodingError.new("Found characters with invalid encoding") unless verify(string)
 
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    end
 
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    if 'string'.respond_to?(:force_encoding)
 
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      # Removes all invalid characters from the string.
 
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      #
 
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      # Note: this method is a no-op in Ruby 1.9
 
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      def self.clean(string)
 
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        string
 
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      end
 
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    else
 
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      def self.clean(string)
 
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        if expression = valid_character
 
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          stripped = []; for c in string.split(//)
 
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            stripped << c if expression.match(c)
 
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          end; stripped.join
 
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        else
 
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          string
 
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        end
 
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      end
 
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    end
 
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  end
 
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end