string.rb - Extension for String. Copyright (C) 2005-2009 Masao Mutoh You may redistribute it and/or modify it under the same license terms as Ruby or LGPL.
# Extension for String class. This feature is included in Ruby 1.9 or later but not occur TypeError. # # #% method which accept "named argument". The translator can know # the meaning of the msgids using "named argument" instead of %s/%d style.
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.) For strings. "%{firstname}, %{familyname}" % {:firstname => "Masao", :familyname => "Mutoh"} With field type to specify format such as d(decimal), f(float),... "%<age>d, %<weight>.1f" % {:age => 10, :weight => 43.4}
# File lib/gettext/core_ext/string.rb, line 54 def %(args) if args.kind_of?(Hash) ret = dup ret.gsub!(PERCENT_MATCH_RE) {|match| if match == '%%' '%' elsif $1 key = $1.to_sym args.has_key?(key) ? args[key] : match elsif $2 key = $2.to_sym args.has_key?(key) ? sprintf("%#{$3}", args[key]) : match end } ret else ret = gsub(%r%([{<])/, '%%\1') begin ret._old_format_m(args) rescue ArgumentError => e if $DEBUG $stderr.puts " The string:#{ret}" $stderr.puts " args:#{args.inspect}" puts e.backtrace else raise ArgumentError, e.message end end end end