method

translate_offset

Ruby on Rails latest stable (v6.1.7.7) - 0 notes - Class: ActiveSupport::Multibyte::Handlers::UTF8Handler

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What's this?

Method deprecated or moved

This method is deprecated or moved on the latest stable version. The last existing version (v2.1.0) is shown here.

translate_offset(str, byte_offset) public

Used to translate an offset from bytes to characters, for instance one received from a regular expression match

Show source

# File activesupport/lib/active_support/multibyte/handlers/utf8_handler.rb, line 321
      def translate_offset(str, byte_offset)
        return nil if byte_offset.nil?
        return 0 if str == ''
        chunk = str[0..byte_offset]
        begin
          begin
            chunk.unpack('U*').length - 1
          rescue ArgumentError => e
            chunk = str[0..(byte_offset+=1)]
            # Stop retrying at the end of the string
            raise e unless byte_offset < chunk.length 
            # We damaged a character, retry
            retry
          end
        # Catch the ArgumentError so we can throw our own
        rescue ArgumentError 
          raise EncodingError.new('malformed UTF-8 character')
        end
      end

translate_offset

Related methods

Method deprecated or moved

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