# $WordDic: worddic/DicReader.rb,v 1.3 2002/12/05 07:37:35 tshiozak Exp $

# Copyright (c) 2002 Takuya SHIOZAKI,
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.


=begin
dictionary reader

TBD
=end

require 'DicRecords'
require 'Converter'

module WordDic
  module DictionaryFactory
    class FromFile
      # input converter
      attr_accessor :converter
      # read from file
      def read(file)
        dic = Dictionary.new
        record = nil
        if file.is_a? IO then
          fh = file
        else
          fh = File.new(file, "r")
        end
        fh.each { |got|
          input = @converter.convert(got)
          if /^\#/ =~ input then
            # comment
          elsif /^\s*$/ =~ input then
            # null line
          elsif /^\s/ =~ input then
            # continued
            if record.nil? then
              raise "illegal file."
            end
            record.contents << input
          else
            # key
            input.chomp!
            unless dic.byname(input).nil? then
              raise input + " is duplicated."
            end
            if /\s+$/ =~ input then
              input = $`
            end
            record = dic.insert(input)
          end
        }
        dic
      end
      def initialize
        @converter = NullConverter.new
      end
    end
  end
end