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if RUBY_VERSION < '1.9'
=begin
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.
=end
# This feature is included in Ruby 1.9 or later but not occur TypeError.
#
# String#% method which accepts named arguments. Particularly useful if the
# string is to be used by a translator because named arguments mean more
# than %s/%d style.
class String
unless instance_methods.find {|m| m.to_s == 'bytesize'}
# For older ruby (such as ruby-1.8.5)
alias :bytesize :size
end
alias :_old_format_m :% # :nodoc:
PERCENT_MATCH_RE = Regexp.union(
/%%/,
/%\{(\w+)\}/,
/%<(\w+)>(.*?\d*\.?\d*[bBdiouxXeEfgGcps])/
)
# 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
# Example:
# "%s, %s" % ["Masao", "Mutoh"]
#
# Also you can use a Hash as the "named argument". This is recommended way so translators
# can understand the meanings of the msgids easily.
# * hash: {:key1 => value1, :key2 => value2, ... }
# * Returns: formatted String
# Example:
# 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}
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(/%([{<])/, '%%\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
end
end
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