chise/chisedb.rb

   1 # Copyright (C) 2002-2004 Kouichirou Eto, All rights reserved.
   2
   3 require "singleton"
   4 require "chise/libchise"
   5
   6 module CHISE
   7   class ChiseDB
   8     include Singleton
   9
  10     def initialize
  11       db_dir = CHISE::DataSource::DB_DIR
  12       @ds = DataSource.new(CHISE::DataSource::Berkeley_DB, db_dir, 0, 0755)
  13       @byids_db = {}
  14     end
  15
  16     def location() @ds.location; end
  17
  18     def get_feature(f) @ds.get_feature(f) end
  19
  20     def get_ccs(c) @ds.get_ccs(c) end
  21
  22     def decode_char(n, cid) @ds.decode_char(n, cid) end
  23
  24     def load_feature(n, cid) @ds.load_feature(n, cid) end
  25
  26     def each_feature_name() @ds.each_feature_name {|f| yield f } end
  27
  28     #def each_ccs() @ds.each_ccs {|c| yield c } end
  29
  30     def get_by_ids_db(n)
  31       @byids_db[n] = ByIDS_DB.new(@ds, n) if @byids_db[n].nil?
  32       @byids_db[n]
  33     end
  34   end
  35
  36   class FeatureDB
  37     def initialize(ds, name)
  38       @ds, @name = ds, name
  39     end
  40
  41   end
  42
  43   class CCS_DB
  44   end
  45
  46
  47   class ByIDS_DB
  48     include ChiseValue
  49     include TableAccessModule
  50
  51     def initialize(ds, name)
  52       @ds, @name = ds, name
  53       @category, @keyvalue = "character", "by_ids"
  54       reset
  55     end
  56
  57     def decode(ids)
  58       setup_db
  59       return nil if @db.nil?
  60       parse_c_string(@db.get(ids))
  61     end
  62
  63     def set_decoded_char(ids, cid)
  64       setup_db(true)
  65       raise "@db is nil." if @db.nil?
  66       @db.put(ids, format_char_id(cid))
  67     end
  68
  69     def each
  70       setup_db
  71       raise "@db is nil." if @db.nil?
  72       @db.each {|k, v|
  73         yield(parse_value(k), parse_c_string(v))
  74       }
  75     end
  76   end
  77 end