summaryrefslogtreecommitdiff
path: root/lib/rbot/load-gettext.rb
blob: f2574af0cbe357a78a4e485d749ff7f20c6cb4e8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
#-- vim:sw=2:et
#++
#
# :title: GetText interface for rbot
#
# Load gettext module and provide fallback in case of failure

class GetTextVersionError < Exception
end

# try to load gettext, or provide fake getttext functions
begin
  require 'gettext/version'

  gettext_version = GetText::VERSION.split('.').map {|n| n.to_i}
  include Comparable # for Array#>=
  unless gettext_version >= [1, 8, 0]
    raise GetTextVersionError, "Unsupported ruby-gettext version installed: #{gettext_version.join '.'}; supported versions are 1.8.0 and above"
  end

  require 'gettext'

  include GetText

  add_default_locale_path(File.join(Irc::Bot::Config.datadir, "../locale/%{locale}/LC_MESSAGES/%{name}.mo"))

  GetText.cached = false
  bindtextdomain 'rbot'

  module GetText
    # patch for ruby-gettext 1.8.0 up to 1.10.0 (and more?) to cope with anonymous
    # modules used by rbot
    # FIXME remove the patch when ruby-gettext is fixed, or rbot switches to named modules
    if !instance_methods.include?('orig_bound_targets')
      alias :orig_bound_targets :bound_targets
    end
    def bound_targets(*a)  # :nodoc:
      bt = orig_bound_targets(*a) rescue []
      bt.empty? ? orig_bound_targets(Object) : bt
    end

    require 'stringio'

    # This method is used to output debug information on the GetText
    # textdomain, and it's called by the language setting routines
    # in rbot
    def rbot_gettext_debug
      begin
        gettext_info = StringIO.new
        current_textdomain_info(:out => gettext_info) # fails sometimes
      rescue Exception
        warning "gettext failed to set call textdomain info. maybe an mo file doesn't exist for your locale."
      ensure
        gettext_info.string.each_line { |l| debug l}
      end
    end
  end

  log "gettext loaded"

rescue LoadError, GetTextVersionError
  warning "failed to load ruby-gettext package: #{$!}; translations are disabled"

  # undefine GetText, in case it got defined because the error was caused by a
  # wrong version
  if defined?(GetText)
    Object.module_eval { remove_const("GetText") }
  end

  # dummy functions that return msg_id without translation
  def _(s)
    s
  end

  def N_(s)
    s
  end

  def n_(s_single, s_plural, n)
    n > 1 ? s_plural : s_single
  end

  def Nn_(s_single, s_plural)
    n_(s_single, s_plural)
  end

  def s_(*args)
    args[0]
  end

  def bindtextdomain_to(*args)
  end

  # the following extension to String#% is from ruby-gettext's string.rb file.
  # it needs to be included in the fallback since the source already use this form

=begin
  string.rb - Extension for String.

  Copyright (C) 2005,2006 Masao Mutoh

  You may redistribute it and/or modify it under the same
  license terms as Ruby.
=end

  # Extension for String class.
  #
  # String#% method which accept "named argument". The translator can know
  # the meaning of the msgids using "named argument" instead of %s/%d style.
  class String
    alias :_old_format_m :% # :nodoc:

    # call-seq:
    #  %(arg)
    #  %(hash)
    #
    # Format - Uses str as a format specification, and returns the result of applying it to arg.
    # If the format specification contains more than one substitution, then arg must be
    # an Array containing the values to be substituted. See Kernel::sprintf for details of the
    # format string. This is the default behavior of the String class.
    # * arg: an Array or other class except Hash.
    # * Returns: formatted String
    #
    #  (e.g.) "%s, %s" % ["Masao", "Mutoh"]
    #
    # Also you can use a Hash as the "named argument". This is recommanded way for Ruby-GetText
    # because the translators can understand the meanings of the msgids easily.
    # * hash: {:key1 => value1, :key2 => value2, ... }
    # * Returns: formatted String
    #
    #  (e.g.) "%{firstname}, %{familyname}" % {:firstname => "Masao", :familyname => "Mutoh"}
    def %(args)
      if args.kind_of?(Hash)
        ret = dup
        args.each {|key, value|
          ret.gsub!(/\%\{#{key}\}/, value.to_s)
        }
        ret
      else
        ret = gsub(/%\{/, '%%{')
        begin
    ret._old_format_m(args)
        rescue ArgumentError
    $stderr.puts "  The string:#{ret}"
    $stderr.puts "  args:#{args.inspect}"
        end
      end
    end
  end
end