#!/usr/bin/env ruby
# vim:ts=2 sw=2 et
# uscchar : 將所輸入 Unicode 碼轉換成相對應的字（UTF-8）
# Edward G.J. Lee (06/13/06)
# 加入 UTF-8 locale 條件（08/30/07）

$KCODE='u'

locale = `echo $LC_ALL`.chomp
if locale == ""
  locale = `echo $LC_CTYPE`.chomp
  if locale == ""
    locale = `echo $LANG`.chomp
  end
end
enc = locale.split('.')

def uni(str)
  if str[0,3] == 'uni'
    str.sub(/uni(\w+)/){[$1.hex].pack('U*')}
  elsif str[0,1] == 'u' && str[0,3] != 'uni'
    str.sub(/u(\w+)/){[$1.hex].pack('U*')}
  elsif str[0,2] == 'U+'
    str.sub(/U\+(\w+)/){[$1.hex].pack('U*')}
  else
    puts "Format not support!"
    exit
  end
end

if locale =~ /UTF/i
  pname = File.basename($0)
  if ARGV.length == 0 or ARGV[0] =~ /-*[Hh].*/
    puts
    puts "Usage: #{pname} uxxxx(or unixxxx, U+xxxx)"
    puts "xxxx is UCS-2/4 hex."
    puts
    exit
  end
  puts uni(ARGV[0])
else
  puts "I need UTF-8 locale."
  exit
end