require 'windows/file'

module Windows
  module Registry
    API.auto_namespace = 'Windows::Registry'
    API.auto_constant  = true
    API.auto_method    = true
    API.auto_unicode   = true

    private
          
    include Windows::File
    
    HKEY_CLASSES_ROOT        = 0x80000000
    HKEY_CURRENT_USER        = 0x80000001
    HKEY_LOCAL_MACHINE       = 0x80000002
    HKEY_USERS               = 0x80000003
    HKEY_PERFORMANCE_DATA    = 0x80000004
    HKEY_PERFORMANCE_TEXT    = 0x80000050
    HKEY_PERFORMANCE_NLSTEXT = 0x80000060
    HKEY_CURRENT_CONFIG      = 0x80000005
    HKEY_DYN_DATA            = 0x80000006

    KEY_QUERY_VALUE         = 0x0001
    KEY_SET_VALUE           = 0x0002
    KEY_CREATE_SUB_KEY      = 0x0004
    KEY_ENUMERATE_SUB_KEYS  = 0x0008
    KEY_NOTIFY              = 0x0010
    KEY_CREATE_LINK         = 0x0020
    KEY_WOW64_32KEY         = 0x0200
    KEY_WOW64_64KEY         = 0x0100
    KEY_WOW64_RES           = 0x0300

    KEY_READ = (STANDARD_RIGHTS_READ|KEY_QUERY_VALUE|KEY_ENUMERATE_SUB_KEYS|
                KEY_NOTIFY) & (~SYNCHRONIZE)

    KEY_WRITE = (STANDARD_RIGHTS_WRITE|KEY_SET_VALUE|
                KEY_CREATE_SUB_KEY) & (~SYNCHRONIZE)

    KEY_EXECUTE = KEY_READ & (~SYNCHRONIZE)

    KEY_ALL_ACCESS = (STANDARD_RIGHTS_ALL|KEY_QUERY_VALUE|KEY_SET_VALUE|
                KEY_CREATE_SUB_KEY|KEY_ENUMERATE_SUB_KEYS|KEY_NOTIFY|
                KEY_CREATE_LINK) & (~SYNCHRONIZE)
                
    REG_OPTION_RESERVED       = 0
    REG_OPTION_NON_VOLATILE   = 0
    REG_OPTION_VOLATILE       = 1
    REG_OPTION_CREATE_LINK    = 2
    REG_OPTION_BACKUP_RESTORE = 4
    REG_OPTION_OPEN_LINK      = 8

    REG_LEGAL_OPTION = REG_OPTION_RESERVED|REG_OPTION_NON_VOLATILE|
       REG_OPTION_VOLATILE|REG_OPTION_CREATE_LINK|REG_OPTION_BACKUP_RESTORE|
       REG_OPTION_OPEN_LINK

    REG_CREATED_NEW_KEY     = 1
    REG_OPENED_EXISTING_KEY = 2

    REG_STANDARD_FORMAT = 1
    REG_LATEST_FORMAT   = 2
    REG_NO_COMPRESSION  = 4

    REG_WHOLE_HIVE_VOLATILE = 1
    REG_REFRESH_HIVE        = 2
    REG_NO_LAZY_FLUSH       = 4
    REG_FORCE_RESTORE       = 8

    REG_FORCE_UNLOAD = 1

    REG_NOTIFY_CHANGE_NAME        = 1
    REG_NOTIFY_CHANGE_ATTRIBUTES  = 2
    REG_NOTIFY_CHANGE_LAST_SET    = 4
    REG_NOTIFY_CHANGE_SECURITY    = 8

    REG_LEGAL_CHANGE_FILTER = REG_NOTIFY_CHANGE_NAME|
       REG_NOTIFY_CHANGE_ATTRIBUTES|REG_NOTIFY_CHANGE_LAST_SET|
       REG_NOTIFY_CHANGE_SECURITY

    REG_NONE                       = 0
    REG_SZ                         = 1
    REG_EXPAND_SZ                  = 2    
    REG_BINARY                     = 3
    REG_DWORD                      = 4
    REG_DWORD_LITTLE_ENDIAN        = 4
    REG_DWORD_BIG_ENDIAN           = 5
    REG_LINK                       = 6
    REG_MULTI_SZ                   = 7
    REG_RESOURCE_LIST              = 8 
    REG_FULL_RESOURCE_DESCRIPTOR   = 9
    REG_RESOURCE_REQUIREMENTS_LIST = 10 
    REG_QWORD                      = 11 
    REG_QWORD_LITTLE_ENDIAN        = 11

    # Registry Routine Flags

    RRF_RT_REG_NONE      = 0x00000001  # restrict type to REG_NONE
    RRF_RT_REG_SZ        = 0x00000002  # restrict type to REG_SZ
    RRF_RT_REG_EXPAND_SZ = 0x00000004  # restrict type to REG_EXPAND_SZ
    RRF_RT_REG_BINARY    = 0x00000008  # restrict type to REG_BINARY
    RRF_RT_REG_DWORD     = 0x00000010  # restrict type to REG_DWORD
    RRF_RT_REG_MULTI_SZ  = 0x00000020  # restrict type to REG_MULTI_SZ
    RRF_RT_REG_QWORD     = 0x00000040  # restrict type to REG_QWORD
    RRF_RT_ANY           = 0x0000ffff
    RRF_NOEXPAND         = 0x10000000
    RRF_ZEROONFAILURE    = 0x20000000
    RRF_RT_DWORD         = (RRF_RT_REG_BINARY | RRF_RT_REG_DWORD)
    RRF_RT_QWORD         = (RRF_RT_REG_BINARY | RRF_RT_REG_QWORD)

    API.new('RegCloseKey', 'L', 'L', 'advapi32')
    API.new('RegConnectRegistry', 'PLP', 'L', 'advapi32')
    API.new('RegCreateKey', 'LPP', 'L', 'advapi32')
    API.new('RegCreateKeyEx', 'LPLPLLPPP', 'L', 'advapi32')
    API.new('RegDeleteKey', 'LP', 'L', 'advapi32')
    API.new('RegDeleteValue', 'LP', 'L', 'advapi32')
    API.new('RegDisablePredefinedCache', 'V', 'L', 'advapi32')
    API.new('RegEnumKey', 'LLPL', 'L', 'advapi32')
    API.new('RegEnumKeyEx', 'LLPPPPPP', 'L', 'advapi32')
    API.new('RegEnumValue', 'LLPPPPPP', 'L', 'advapi32')
    API.new('RegFlushKey', 'L', 'L', 'advapi32')
    API.new('RegGetKeySecurity','LLPP','L','advapi32')  
    API.new('RegLoadKey', 'LPP', 'L', 'advapi32')
    API.new('RegNotifyChangeKeyValue', 'LILLI', 'L', 'advapi32')
    API.new('RegOpenCurrentUser', 'LP', 'L', 'advapi32')
    API.new('RegOpenKey', 'LPP', 'L', 'advapi32')
    API.new('RegOpenKeyEx', 'LPLLP', 'L', 'advapi32')
    API.new('RegOpenUserClassesRoot', 'LLLP', 'L', 'advapi32')
    API.new('RegOverridePredefKey', 'LL', 'L', 'advapi32')
    API.new('RegQueryInfoKey', 'LPPPPPPPPPPP', 'L', 'advapi32')
    API.new('RegQueryMultipleValues', 'LPLPP', 'L', 'advapi32')
    API.new('RegQueryValueEx', 'LPPPPP', 'L', 'advapi32')
    API.new('RegReplaceKey', 'LPPP', 'L', 'advapi32')
    API.new('RegRestoreKey', 'LPL', 'L', 'advapi32')
    API.new('RegSaveKey', 'LPP', 'L', 'advapi32')
    API.new('RegSetKeySecurity','LLP','L','advapi32')
    API.new('RegSetValueEx', 'LPLLPL', 'L', 'advapi32')
    API.new('RegUnLoadKey', 'LP', 'L', 'advapi32')

    begin
      API.new('RegGetValue', 'LPPLPPP', 'L', 'advapi32')
    rescue Win32::API::LoadLibraryError
      # Windows XP 64 or later
    end
    
    begin
      API.new('RegSaveKeyEx', 'LPPL', 'L', 'advapi32')
    rescue Win32::API::LoadLibraryError
      # Windows XP or later
    end

    begin
      API.new('GetSystemRegistryQuota','LPLL','L')
      API.new('RegDeleteKeyEx','LPLL','L','advapi32')  
      API.new('RegDisableReflectionKey', 'L', 'L', 'advapi32')  
      API.new('RegEnableReflectionKey', 'L', 'L', 'advapi32')  
      API.new('RegQueryReflectionKey','LB','L','advapi32')
      API.new('RegCopyTree','LPL','L','advapi32')  
      API.new('RegCreateKeyTransacted','LPLPLLPPPLP','L','advapi32')  
      API.new('RegDeleteKeyValue','LP','L','advapi32')  
      API.new('RegDeleteTree','LP','L','advapi32')  
      API.new('RegDeleteKeyTransacted','LPLLLP','L','advapi32')  
      API.new('RegDisablePredefinedCacheEx', 'V', 'L', 'advapi32')  
      API.new('RegLoadAppKey','PPLLL','L','advapi32')  
      API.new('RegLoadMUIString', 'LPPLPLP', 'L', 'advapi32')  
      API.new('RegOpenKeyTransacted','LPLLPLP','L','advapi32')  
      API.new('RegSetKeyValue','LPPLPL','L','advapi32') 
    rescue Win32::API::LoadLibraryError
      # Windows Vista or later
    end
  end
end