4 # :title: DICT (RFC 2229) Protocol Client Plugin for rbot
6 # Author:: Yaohan Chen <yaohan.chen@gmail.com>
7 # Copyright:: (C) 2007 Yaohan Chen
10 # Looks up words on a DICT server. DEFINE and MATCH commands, as well as listing of
11 # databases and strategies are supported.
14 # Improve output format
17 # requires Ruby/DICT <http://www.caliban.org/ruby/ruby-dict.shtml>
21 # Returns a new string truncated to length 'to'
22 # If ellipsis is not given, that will just be the first n characters,
23 # Else it will return a string in the form <head><ellipsis><tail>
24 # The total length of that string will not exceed 'to'.
25 # If tail is an Integer, the tail will be exactly 'tail' characters,
26 # if it is a Float/Rational tails length will be (to*tail).ceil.
28 # Contributed by apeiros
29 def truncate(to=32, ellipsis='…', tail=0.3)
31 return str.first(to).join('') if !ellipsis or str.length <= to
32 to -= ellipsis.split(//).length
33 tail = (tail*to).ceil unless Integer === tail
35 "#{str.first(to)}#{ellipsis}#{str.last(tail)}"
45 definition[1..-1].join.gsub(/\s+/, ' ').strip
49 class DictClientPlugin < Plugin
50 BotConfig.register BotConfigStringValue.new('dictclient.server',
51 :default => 'dict.org',
52 :desc => 'Hostname or hostname:port of the DICT server used to lookup words')
53 BotConfig.register BotConfigIntegerValue.new('dictclient.max_defs_before_collapse',
55 :desc => 'When multiple databases reply a number of definitions that above this limit, only the database names will be listed. Otherwise, the full definitions from each database are replied')
56 BotConfig.register BotConfigIntegerValue.new('dictclient.max_length_per_def',
58 :desc => 'Each definition is truncated to this length')
59 BotConfig.register BotConfigStringValue.new('dictclient.headword_format',
60 :default => "#{Bold}<headword>#{Bold}",
61 :desc => 'Format of headwords; <word> will be replaced with the actual word')
62 BotConfig.register BotConfigStringValue.new('dictclient.database_format',
63 :default => "#{Underline}<database>#{Underline}",
64 :desc => 'Format of database names; <database> will be replaced with the database name')
65 BotConfig.register BotConfigStringValue.new('dictclient.definition_format',
66 :default => '<headword>: <definition> -<database>',
67 :desc => 'Format of definitions. <word> will be replaced with the formatted headword, <def> will be replaced with the truncated definition, and <database> with the formatted database name')
68 BotConfig.register BotConfigStringValue.new('dictclient.match_format',
69 :default => '<matches>––<database>',
70 :desc => 'Format of match results. <matches> will be replaced with the formatted headwords, <database> with the formatted database name')
76 # create a DICT object, which is passed to the block. after the block finishes,
77 # the DICT object is automatically disconnected. the return value of the block
78 # is returned from this method.
79 # if an IRC message argument is passed, the error message will be replied
80 def with_dict(m=nil &block)
81 server, port = @bot.config['dictclient.server'].split ':' if @bot.config['dictclient.server']
83 port ||= DICT::DEFAULT_PORT
86 dict = DICT.new(server, port)
90 m.reply 'An error occured connecting to the DICT server. Check the dictclient.server configuration or retry later' if m
92 m.reply 'A protocol error occured' if m
94 m.reply 'An error occured' if m
99 def format_headword(w)
100 @bot.config['dictclient.headword_format'].gsub '<headword>', w
103 def format_database(d)
104 @bot.config['dictclient.database_format'].gsub '<database>', d
107 def cmd_define(m, params)
108 phrase = params[:phrase].to_s
109 results = with_dict(m) {|d| d.define(params[:database], params[:phrase])}
112 # only list database headers if definitions come from different databases and
113 # the number of definitions is above dictclient.max_defs_before_collapse
114 if results.any? {|r| r.database != results[0].database} &&
115 results.length > @bot.config['dictclient.max_defs_before_collapse']
116 "Definitions for #{format_headword phrase} were found in #{
117 results.collect {|r| r.database}.uniq.collect {|d|
118 format_database d}.join ', '
119 }. Specify database to view full result."
120 # otherwise display the definitions
123 @bot.config['dictclient.definition_format'].gsub(
124 '<headword>', format_headword(r.headword)
126 '<database>', format_database(r.database)
128 '<definition>', r.body.truncate(@bot.config['dictclient.max_length_per_def'])
133 "No definition for #{format_headword phrase} found from #{
134 format_database params[:database]}."
139 def cmd_match(m, params)
140 phrase = params[:phrase].to_s
141 results = with_dict(m) {|d| d.match(params[:database],
142 params[:strategy], phrase)}
145 results.collect {|database, matches|
146 @bot.config['dictclient.match_format'].gsub(
147 '<matches>', matches.collect {|m| format_headword m}.join(', ')
149 '<database>', format_database(database)
153 "Nothing matched for #{format_headword phrase
154 } from #{format_database params[:database]} using #{params[:strategy]}"
159 def cmd_databases(m, params)
161 m.reply "Databases: #{
162 d.show_db.collect {|db, d|"#{format_database db}: #{d}"}.join '; '
167 def cmd_strategies(m, params)
169 m.reply "Strategies: #{
170 d.show_strat.collect {|s, d| "#{s}: #{d}"}.join '; '
175 def help(plugin, topic='')
176 "define <phrase> [from <database>] => Show definition of a phrase; match <phrase> [using <strategy>] [from <database>] => Show matching phrases; dictclient databases => List databases; dictclient strategies => List strategies"
180 plugin = DictClientPlugin.new
182 plugin.map 'define *phrase [from :database]',
183 :action => 'cmd_define',
184 :defaults => {:database => DICT::ALL_DATABASES}
186 plugin.map 'match *phrase [using :strategy] [from :database]',
187 :action => 'cmd_match',
188 :defaults => {:database => DICT::ALL_DATABASES,
189 :strategy => DICT::DEFAULT_MATCH_STRATEGY }
191 plugin.map 'dictclient databases', :action => 'cmd_databases'
192 plugin.map 'dictclient strategies', :action => 'cmd_strategies'