4 # :title: GetText interface for rbot
6 # Load gettext module and provide fallback in case of failure
8 class GetTextVersionError < Exception
11 # try to load gettext, or provide fake getttext functions
13 # workaround for gettext not checking empty LANGUAGE
14 if ENV["LANGUAGE"] and ENV["LANGUAGE"].empty?
18 require 'gettext/version'
20 gettext_version = GetText::VERSION.split('.').map {|n| n.to_i}
22 include Comparable # for Array#>=
24 unless gettext_version >= [1, 8, 0]
25 raise GetTextVersionError, "Unsupported ruby-gettext version installed: #{gettext_version.join '.'}; supported versions are 1.8.0 and above"
32 rbot_locale_path = File.join(Irc::Bot::Config.datadir, "../locale/%{locale}/LC_MESSAGES/%{name}.mo")
33 if gettext_version < [2, 0, 0]
34 add_default_locale_path(rbot_locale_path)
36 LocalePath.add_default_rule(rbot_locale_path)
39 if GetText.respond_to? :cached=
40 GetText.cached = false
41 elsif TextDomain.respond_to? :cached=
42 TextDomain.cached = false
44 warning 'This version of ruby-gettext does not support non-cached mode; mo files are not reloaded when setting language'
49 # patch for ruby-gettext 1.x to cope with anonymous modules used by rbot.
50 # bound_targets and related methods are not used nor present in 2.x, and
51 # this patch is not needed
52 if respond_to? :bound_targets, true
53 alias :orig_bound_targets :bound_targets
55 def bound_targets(*a) # :nodoc:
56 bt = orig_bound_targets(*a) rescue []
57 bt.empty? ? orig_bound_targets(Object) : bt
63 # GetText 2.1.0 does not provide current_textdomain_info,
64 # so we adapt the one from 1.9.10
65 # TODO we would _really_ like to have a future-proof version of this,
66 # but judging by the ruby gettext source code, this isn't going to
67 # happen anytime soon.
68 if not respond_to? :current_textdomain_info
69 # Show the current textdomain information. This function is for debugging.
70 # * options: options as a Hash.
71 # * :with_messages - show informations with messages of the current mo file. Default is false.
72 # * :out - An output target. Default is STDOUT.
73 # * :with_paths - show the load paths for mo-files.
74 def current_textdomain_info(options = {})
75 opts = {:with_messages => false, :with_paths => false, :out => STDOUT}.merge(options)
78 TextDomainManager.each_textdomains(self) {|textdomain, lang|
79 opts[:out].puts "TextDomain name: #{textdomain.name.inspect}"
80 opts[:out].puts "TextDomain current locale: #{lang.to_s.inspect}"
81 opts[:out].puts "TextDomain current mo path: #{textdomain.instance_variable_get(:@locale_path).current_path(lang).inspect}"
83 opts[:out].puts "TextDomain locale file paths:"
84 textdomain.locale_paths.each do |v|
85 opts[:out].puts " #{v}"
88 if opts[:with_messages]
89 opts[:out].puts "The messages in the mo file:"
90 textdomain.current_mo.each{|k, v|
91 opts[:out].puts " \"#{k}\": \"#{v}\""
98 # This method is used to output debug information on the GetText
99 # textdomain, and it's called by the language setting routines
101 def rbot_gettext_debug
103 gettext_info = StringIO.new
104 current_textdomain_info(:out => gettext_info) # fails sometimes
106 warning "failed to retrieve textdomain info. maybe an mo file doesn't exist for your locale."
109 gettext_info.string.each_line { |l| debug l}
116 rescue LoadError, GetTextVersionError
117 warning "failed to load ruby-gettext package: #{$!}; translations are disabled"
119 # undefine GetText, in case it got defined because the error was caused by a
122 Object.module_eval { remove_const("GetText") }
125 # dummy functions that return msg_id without translation
134 def n_(s_single, s_plural, n)
135 n > 1 ? s_plural : s_single
138 def Nn_(s_single, s_plural)
139 n_(s_single, s_plural)
146 def bindtextdomain_to(*args)
149 # the following extension to String#% is from ruby-gettext's string.rb file.
150 # it needs to be included in the fallback since the source already use this form
153 string.rb - Extension for String.
155 Copyright (C) 2005,2006 Masao Mutoh
157 You may redistribute it and/or modify it under the same
158 license terms as Ruby.
161 # Extension for String class.
163 # String#% method which accept "named argument". The translator can know
164 # the meaning of the msgids using "named argument" instead of %s/%d style.
166 alias :_old_format_m :% # :nodoc:
172 # Format - Uses str as a format specification, and returns the result of applying it to arg.
173 # If the format specification contains more than one substitution, then arg must be
174 # an Array containing the values to be substituted. See Kernel::sprintf for details of the
175 # format string. This is the default behavior of the String class.
176 # * arg: an Array or other class except Hash.
177 # * Returns: formatted String
179 # (e.g.) "%s, %s" % ["Masao", "Mutoh"]
181 # Also you can use a Hash as the "named argument". This is recommanded way for Ruby-GetText
182 # because the translators can understand the meanings of the msgids easily.
183 # * hash: {:key1 => value1, :key2 => value2, ... }
184 # * Returns: formatted String
186 # (e.g.) "%{firstname}, %{familyname}" % {:firstname => "Masao", :familyname => "Mutoh"}
188 if args.kind_of?(Hash)
190 args.each {|key, value|
191 ret.gsub!(/\%\{#{key}\}/, value.to_s)
195 ret = gsub(/%\{/, '%%{')
197 ret._old_format_m(args)
199 $stderr.puts " The string:#{ret}"
200 $stderr.puts " args:#{args.inspect}"