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#! /usr/bin/ruby
=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. This feature is included in Ruby 1.9 or later.
begin
raise ArgumentError if ("a %{x}" % {:x=>'b'}) != 'a b'
rescue ArgumentError
# either we are on vanilla 1.8(call with hash raises ArgumentError)
# or someone else already patched % but did it wrong
class String
alias :_fast_gettext_old_format_m :% # :nodoc:
PERCENT_MATCH_RE = Regexp.union(
/%%/,
/%\{([-\.\w]+)\}/,
/%<([-\.\w]+)>(.*?\d*\.?\d*[bBdiouxXeEfgGcps])/
)
# call-seq:
# %(hash)
#
# Default: "%s, %s" % ["Masao", "Mutoh"]
# Extended:
# "%{firstname}, %{lastname}" % {:firstname=>"Masao",:lastname=>"Mutoh"} == "Masao Mutoh"
# with field type such as d(decimal), f(float), ...
# "%<age>d, %<weight>.1f" % {:age => 10, :weight => 43.4} == "10 43.4"
# This is the recommanded way for Ruby-GetText
# because the translators can understand the meanings of the keys easily.
def %(args)
if args.kind_of? Hash
#stringify keys
replace = {}
args.each{|k,v|replace[k.to_s]=v}
#replace occurances
ret = dup
ret.gsub!(PERCENT_MATCH_RE) do |match|
if match == '%%'
'%'
elsif $1
replace.has_key?($1) ? replace[$1] : match
elsif $2
replace.has_key?($2) ? sprintf("%#{$3}", replace[$2]) : match
end
end
ret
else
ret = gsub(/%([{<])/, '%%\1')
ret._fast_gettext_old_format_m(args)
end
end
end
end
# 1.9.1 if you misspell a %{key} your whole page would blow up, no thanks...
begin
("%{b}" % {:a=>'b'})
rescue KeyError
class String
alias :_fast_gettext_old_format_m :%
def %(*args)
begin
_fast_gettext_old_format_m(*args)
rescue KeyError
self
end
end
end
end
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