kbchg.rb

# coding: cp932

require 'win32/registry'

VAL_NAMES = %w|
LayerDriver\ JPN
OverrideKeyboardIdentifier
OverrideKeyboardSubtype
OverrideKeyboardType
|
VAL_TYPES = [ 
  Win32::Registry::REG_SZ, Win32::Registry::REG_SZ,
  Win32::Registry::REG_DWORD, Win32::Registry::REG_DWORD 
]  
VAL_102 = %w|kbd101.dll PCAT_101KEY 0 7|
VAL_106 = %w|kbd106.dll PCAT_106KEY 2 7|
  
if ARGV.length != 1 || !%w|us jp|.include?(ARGV[0])
  $stderr.puts 'usage: ruby kbchg.rb [us|jp]'
else
  values = (ARGV[0] == 'jp') ? VAL_106 : VAL_102
  Win32::Registry::HKEY_LOCAL_MACHINE.open('SYSTEM\CurrentControlSet\Services\i8042prt\Parameters', Win32::Registry::KEY_ALL_ACCESS) do |reg|
    VAL_NAMES.zip(VAL_TYPES, values).each do |key, type, val|
      reg.write key, type, val
    end
  end
end

GPLv3