Class: Win32::Registry

Inherits:
Object
  • Object
show all
Includes:
Enumerable, Constants
Defined in:
lib/win32/registry.rb

Direct Known Subclasses

PredefinedKey

Defined Under Namespace

Modules: API, Constants Classes: Error, PredefinedKey

Constant Summary collapse

@@type2name = 
{ }
@@final =

finalizer

proc { |hkey| proc { API.CloseKey(hkey[0]) if hkey[0] } }

Constants included from Constants

Constants::HKEY_CLASSES_ROOT, Constants::HKEY_CURRENT_CONFIG, Constants::HKEY_CURRENT_USER, Constants::HKEY_DYN_DATA, Constants::HKEY_LOCAL_MACHINE, Constants::HKEY_PERFORMANCE_DATA, Constants::HKEY_PERFORMANCE_NLSTEXT, Constants::HKEY_PERFORMANCE_TEXT, Constants::HKEY_USERS, Constants::KEY_ALL_ACCESS, Constants::KEY_CREATE_LINK, Constants::KEY_CREATE_SUB_KEY, Constants::KEY_ENUMERATE_SUB_KEYS, Constants::KEY_EXECUTE, Constants::KEY_NOTIFY, Constants::KEY_QUERY_VALUE, Constants::KEY_READ, Constants::KEY_SET_VALUE, Constants::KEY_WRITE, Constants::MAX_KEY_LENGTH, Constants::MAX_VALUE_LENGTH, Constants::REG_BINARY, Constants::REG_CREATED_NEW_KEY, Constants::REG_DWORD, Constants::REG_DWORD_BIG_ENDIAN, Constants::REG_DWORD_LITTLE_ENDIAN, Constants::REG_EXPAND_SZ, Constants::REG_FORCE_RESTORE, Constants::REG_FULL_RESOURCE_DESCRIPTOR, Constants::REG_LEGAL_OPTION, Constants::REG_LINK, Constants::REG_MULTI_SZ, Constants::REG_NONE, Constants::REG_NO_LAZY_FLUSH, Constants::REG_OPENED_EXISTING_KEY, Constants::REG_OPTION_BACKUP_RESTORE, Constants::REG_OPTION_CREATE_LINK, Constants::REG_OPTION_NON_VOLATILE, Constants::REG_OPTION_OPEN_LINK, Constants::REG_OPTION_RESERVED, Constants::REG_OPTION_VOLATILE, Constants::REG_QWORD, Constants::REG_QWORD_LITTLE_ENDIAN, Constants::REG_REFRESH_HIVE, Constants::REG_RESOURCE_LIST, Constants::REG_RESOURCE_REQUIREMENTS_LIST, Constants::REG_SZ, Constants::REG_WHOLE_HIVE_VOLATILE, Constants::STANDARD_RIGHTS_READ, Constants::STANDARD_RIGHTS_WRITE

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(hkey, parent, keyname, disposition) ⇒ Registry

initialize



466
467
468
469
470
471
472
473
 
# File 'lib/win32/registry.rb', line 466

def initialize(hkey, parent, keyname, disposition)
  @hkey = hkey
  @parent = parent
  @keyname = keyname
  @disposition = disposition
  @hkeyfinal = [ hkey ]
  ObjectSpace.define_finalizer self, @@final.call(@hkeyfinal)
end

Instance Attribute Details

#disposition ⇒ Object (readonly)

Disposition value (REG_CREATED_NEW_KEY or REG_OPENED_EXISTING_KEY).



483
484
485
 
# File 'lib/win32/registry.rb', line 483

def disposition
  @disposition
end

#hkey ⇒ Object (readonly)

Returns key handle value.



476
477
478
 
# File 'lib/win32/registry.rb', line 476

def hkey
  @hkey
end

#keyname ⇒ Object (readonly)

Same as subkey value of Registry.open or Registry.create method.



481
482
483
 
# File 'lib/win32/registry.rb', line 481

def keyname
  @keyname
end

#parent ⇒ Object (readonly)

Win32::Registry object of parent key, or nil if predefeined key.



478
479
480
 
# File 'lib/win32/registry.rb', line 478

def parent
  @parent
end

Class Method Details

.create(hkey, subkey, desired = KEY_ALL_ACCESS, opt = REG_OPTION_RESERVED) ⇒ Object

— Registry.create(key, subkey, desired = KEY_ALL_ACCESS, opt = REG_OPTION_RESERVED)

— Registry.create(key, subkey, desired = KEY_ALL_ACCESS, opt = REG_OPTION_RESERVED) { |reg| … }

Create or open the registry key subkey under key. You can use predefined key HKEY_* (see Constants)

If subkey is already exists, key is opened and Registry#created? method will return false.

If block is given, the key is closed automatically.



444
445
446
447
448
449
450
451
452
453
454
455
456
 
# File 'lib/win32/registry.rb', line 444

def self.create(hkey, subkey, desired = KEY_ALL_ACCESS, opt = REG_OPTION_RESERVED)
  newkey, disp = API.CreateKey(hkey.hkey, subkey, opt, desired)
  obj = new(newkey, hkey, subkey, disp)
  if block_given?
    begin
      yield obj
    ensure
      obj.close
    end
  else
    obj
  end
end

.expand_environ(str) ⇒ Object

Replace %w+% into the environment value of what is contained between the %‘s This method is used for REG_EXPAND_SZ.

For detail, see expandEnvironmentStrings Win32 API.



361
362
363
364
365
366
367
 
# File 'lib/win32/registry.rb', line 361

def self.expand_environ(str)
  str.gsub(Regexp.compile("%([^%]+)%".encode(str.encoding))) {
    v = $1.encode(LOCALE)
    (e = ENV[v] || ENV[v.upcase]; e.encode(str.encoding) if e) ||
    $&
  }
end

.open(hkey, subkey, desired = KEY_READ, opt = REG_OPTION_RESERVED) ⇒ Object

— Registry.open(key, subkey, desired = KEY_READ, opt = REG_OPTION_RESERVED)

— Registry.open(key, subkey, desired = KEY_READ, opt = REG_OPTION_RESERVED) { |reg| … }

Open the registry key subkey under key. key is Win32::Registry object of parent key. You can use predefined key HKEY_* (see Constants) desired and opt is access mask and key option. For detail, see the MSDN. If block is given, the key is closed automatically.



416
417
418
419
420
421
422
423
424
425
426
427
428
429
 
# File 'lib/win32/registry.rb', line 416

def self.open(hkey, subkey, desired = KEY_READ, opt = REG_OPTION_RESERVED)
  subkey = subkey.chomp('\\')
  newkey = API.OpenKey(hkey.hkey, subkey, opt, desired)
  obj = new(newkey, hkey, subkey, REG_OPENED_EXISTING_KEY)
  if block_given?
    begin
      yield obj
    ensure
      obj.close
    end
  else
    obj
  end
end

.time2wtime(time) ⇒ Object

Convert Time object or Integer object into 64-bit FILETIME.



396
397
398
 
# File 'lib/win32/registry.rb', line 396

def self.time2wtime(time)
  time.to_i * 10000000 + 116444736000000000
end

.type2name(type) ⇒ Object

Convert registry type value to readable string.



382
383
384
 
# File 'lib/win32/registry.rb', line 382

def self.type2name(type)
  @@type2name[type] || type.to_s
end

.wtime2time(wtime) ⇒ Object

Convert 64-bit FILETIME integer into Time object.



389
390
391
 
# File 'lib/win32/registry.rb', line 389

def self.wtime2time(wtime)
  Time.at((wtime - 116444736000000000) / 10000000)
end

Instance Method Details

#[](name, *rtype) ⇒ Object

Read a registry value named name and return its value data. The class of value is same as #read method returns.

If the value type is REG_EXPAND_SZ, returns value data whose environment variables are replaced. If the value type is neither REG_SZ, REG_MULTI_SZ, REG_DWORD, REG_DWORD_BIG_ENDIAN, nor REG_QWORD, TypeError is raised.

The meaning of rtype is same as #read method.



664
665
666
667
668
669
670
671
672
673
674
 
# File 'lib/win32/registry.rb', line 664

def [](name, *rtype)
  type, data = read(name, *rtype)
  case type
  when REG_SZ, REG_DWORD, REG_QWORD, REG_MULTI_SZ
    data
  when REG_EXPAND_SZ
    Registry.expand_environ(data)
  else
    raise TypeError, "Type #{type} is not supported."
  end
end

#[]=(name, rtype, value = nil) ⇒ Object

Write value to a registry value named name.

If wtype is specified, the value type is it. Otherwise, the value type is depend on class of value: :Integer

REG_DWORD

:String

REG_SZ

:Array

REG_MULTI_SZ



762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
 
# File 'lib/win32/registry.rb', line 762

def []=(name, rtype, value = nil)
  if value
    write name, rtype, value
  else
    case value = rtype
    when Integer
      write name, REG_DWORD, value
    when String
      write name, REG_SZ, value
    when Array
      write name, REG_MULTI_SZ, value
    else
      raise TypeError, "Unexpected type #{value.class}"
    end
  end
  value
end

#_dump(depth) ⇒ Object

marshalling is not allowed

Raises:

  • (TypeError) 


521
522
523
 
# File 'lib/win32/registry.rb', line 521

def _dump(depth)
  raise TypeError, "can't dump Win32::Registry"
end

#close ⇒ Object

Close key.

After close, most method raise an error.



544
545
546
547
548
 
# File 'lib/win32/registry.rb', line 544

def close
  API.CloseKey(@hkey)
  @hkey = @parent = @keyname = nil
  @hkeyfinal[0] = nil
end

#create(subkey, desired = KEY_ALL_ACCESS, opt = REG_OPTION_RESERVED, &blk) ⇒ Object

Same as Win32::Registry.create (self, subkey, desired, opt)



535
536
537
 
# File 'lib/win32/registry.rb', line 535

def create(subkey, desired = KEY_ALL_ACCESS, opt = REG_OPTION_RESERVED, &blk)
  self.class.create(self, subkey, desired, opt, &blk)
end

#created? ⇒ Boolean

Returns if key is created ((newly)). (see Registry.create) – basically you call create then when you call created? on the instance returned it will tell if it was successful or not

Returns:

  • (Boolean) 


491
492
493
 
# File 'lib/win32/registry.rb', line 491

def created?
  @disposition == REG_CREATED_NEW_KEY
end

#delete_key(name, recursive = false) ⇒ Object

Delete a subkey named name and all its values.

If recursive is false, the subkey must not have subkeys. Otherwise, this method deletes all subkeys and values recursively.



825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
 
# File 'lib/win32/registry.rb', line 825

def delete_key(name, recursive = false)
  if recursive
    open(name, KEY_ALL_ACCESS) do |reg|
      reg.keys.each do |key|
        begin
          reg.delete_key(key, true)
        rescue Error
          #
        end
      end
    end
    API.DeleteKey(@hkey, name)
  else
    begin
      API.EnumKey @hkey, 0
    rescue Error
      return API.DeleteKey(@hkey, name)
    end
    raise Error.new(5) ## ERROR_ACCESS_DENIED
  end
end

#delete_value(name) ⇒ Object Also known as: delete

Delete a registry value named name. We can not delete the ‘default’ value.



814
815
816
 
# File 'lib/win32/registry.rb', line 814

def delete_value(name)
  API.DeleteValue(@hkey, name)
end

#each_key ⇒ Object

Enumerate subkeys.

subkey is String which contains name of subkey. wtime is last write time as FILETIME (64-bit integer). (see Registry.wtime2time)



590
591
592
593
594
595
596
597
598
599
600
601
602
603
 
# File 'lib/win32/registry.rb', line 590

def each_key
  index = 0
  while true
    begin
      subkey, wtime = API.EnumKey(@hkey, index)
    rescue Error
      break
    end
    subkey = export_string(subkey)
    yield subkey, wtime
    index += 1
  end
  index
end

#each_value ⇒ Object Also known as: each

Enumerate values.



553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
 
# File 'lib/win32/registry.rb', line 553

def each_value
  index = 0
  while true
    begin
      subkey = API.EnumValue(@hkey, index)
    rescue Error
      break
    end
    subkey = export_string(subkey)
    begin
      type, data = read(subkey)
    rescue Error
      next
    end
    yield subkey, type, data
    index += 1
  end
  index
end

#flush ⇒ Object

Write all the attributes into the registry file.



850
851
852
 
# File 'lib/win32/registry.rb', line 850

def flush
  API.FlushKey @hkey
end

#info ⇒ Object

Returns key information as Array of: :num_keys

The number of subkeys.

:max_key_length

Maximum length of name of subkeys.

:num_values

The number of values.

:max_value_name_length

Maximum length of name of values.

:max_value_length

Maximum length of value of values.

:descriptor_length

Length of security descriptor.

:wtime

Last write time as FILETIME(64-bit integer)

For detail, see RegQueryInfoKey Win32 API.



873
874
875
 
# File 'lib/win32/registry.rb', line 873

def info
  API.QueryInfoKey(@hkey)
end

#inspect ⇒ Object 



514
515
516
 
# File 'lib/win32/registry.rb', line 514

def inspect
  "\#<Win32::Registry key=#{name.inspect}>"
end

#keys ⇒ Object

return keys as an array



608
609
610
611
612
 
# File 'lib/win32/registry.rb', line 608

def keys
  keys_ary = []
  each_key { |key,| keys_ary << key }
  keys_ary
end

#name ⇒ Object

Full path of key such as ‘HKEY_CURRENT_USERSOFTWAREfoobar’.



505
506
507
508
509
510
511
512
 
# File 'lib/win32/registry.rb', line 505

def name
  parent = self
  name = @keyname
  while parent = parent.parent
    name = parent.keyname + '\\' + name
  end
  name
end

#open(subkey, desired = KEY_READ, opt = REG_OPTION_RESERVED, &blk) ⇒ Object

Same as Win32::Registry.open (self, subkey, desired, opt)



528
529
530
 
# File 'lib/win32/registry.rb', line 528

def open(subkey, desired = KEY_READ, opt = REG_OPTION_RESERVED, &blk)
  self.class.open(self, subkey, desired, opt, &blk)
end

#open? ⇒ Boolean

Returns if key is not closed.

Returns:

  • (Boolean) 


498
499
500
 
# File 'lib/win32/registry.rb', line 498

def open?
  !@hkey.nil?
end

#read(name, *rtype) ⇒ Object

Read a registry value named name and return array of [ type, data ]. When name is nil, the ‘default’ value is read. type is value type. (see Win32::Registry::Constants module) data is value data, its class is: :REG_SZ, REG_EXPAND_SZ

String

:REG_MULTI_SZ

Array of String

:REG_DWORD, REG_DWORD_BIG_ENDIAN, REG_QWORD

Integer

:REG_BINARY

String (contains binary data)

When rtype is specified, the value type must be included by rtype array, or TypeError is raised.



630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
 
# File 'lib/win32/registry.rb', line 630

def read(name, *rtype)
  type, data = API.QueryValue(@hkey, name)
  unless rtype.empty? or rtype.include?(type)
    raise TypeError, "Type mismatch (expect #{rtype.inspect} but #{type} present)"
  end
  case type
  when REG_SZ, REG_EXPAND_SZ
    [ type, data.encode(name.encoding, WCHAR).chop ]
  when REG_MULTI_SZ
    [ type, data.encode(name.encoding, WCHAR).split(/\0/) ]
  when REG_BINARY
    [ type, data ]
  when REG_DWORD
    [ type, API.unpackdw(data) ]
  when REG_DWORD_BIG_ENDIAN
    [ type, data.unpack('N')[0] ]
  when REG_QWORD
    [ type, API.unpackqw(data) ]
  else
    raise TypeError, "Type #{type} is not supported."
  end
end

#read_bin(name) ⇒ Object

Read a REG_SZ(read_s), REG_DWORD(read_i), or REG_BINARY(read_bin) registry value named name.

If the values type does not match, TypeError is raised.



715
716
717
 
# File 'lib/win32/registry.rb', line 715

def read_bin(name)
  read(name, REG_BINARY)[1]
end

#read_i(name) ⇒ Object

Read a REG_SZ(read_s), REG_DWORD(read_i), or REG_BINARY(read_bin) registry value named name.

If the values type does not match, TypeError is raised.



705
706
707
 
# File 'lib/win32/registry.rb', line 705

def read_i(name)
  read(name, REG_DWORD, REG_DWORD_BIG_ENDIAN, REG_QWORD)[1]
end

#read_s(name) ⇒ Object

Read a REG_SZ(read_s), REG_DWORD(read_i), or REG_BINARY(read_bin) registry value named name.

If the values type does not match, TypeError is raised.



680
681
682
 
# File 'lib/win32/registry.rb', line 680

def read_s(name)
  read(name, REG_SZ)[1]
end

#read_s_expand(name) ⇒ Object

Read a REG_SZ or REG_EXPAND_SZ registry value named name.

If the value type is REG_EXPAND_SZ, environment variables are replaced. Unless the value type is REG_SZ or REG_EXPAND_SZ, TypeError is raised.



690
691
692
693
694
695
696
697
 
# File 'lib/win32/registry.rb', line 690

def read_s_expand(name)
  type, data = read(name, REG_SZ, REG_EXPAND_SZ)
  if type == REG_EXPAND_SZ
    Registry.expand_environ(data)
  else
    data
  end
end

#values ⇒ Object

return values as an array



577
578
579
580
581
 
# File 'lib/win32/registry.rb', line 577

def values
  vals_ary = []
  each_value { |*, val| vals_ary << val }
  vals_ary
end

#write(name, type, data) ⇒ Object

Write data to a registry value named name. When name is nil, write to the ‘default’ value.

type is type value. (see Registry::Constants module) Class of data must be same as which #read method returns.



727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
 
# File 'lib/win32/registry.rb', line 727

def write(name, type, data)
  termsize = 0
  case type
  when REG_SZ, REG_EXPAND_SZ
    data = data.encode(WCHAR)
    termsize = WCHAR_SIZE
  when REG_MULTI_SZ
    data = data.to_a.map {|s| s.encode(WCHAR)}.join(WCHAR_NUL) << WCHAR_NUL
    termsize = WCHAR_SIZE
  when REG_BINARY
    data = data.to_s
  when REG_DWORD
    data = API.packdw(data.to_i)
  when REG_DWORD_BIG_ENDIAN
    data = [data.to_i].pack('N')
  when REG_QWORD
    data = API.packqw(data.to_i)
  else
    raise TypeError, "Unsupported type #{type}"
  end
  API.SetValue(@hkey, name, type, data, data.bytesize + termsize)
end

#write_bin(name, value) ⇒ Object

Write value to a registry value named name.

The value type is REG_SZ(write_s), REG_DWORD(write_i), or REG_BINARY(write_bin).



806
807
808
 
# File 'lib/win32/registry.rb', line 806

def write_bin(name, value)
  write name, REG_BINARY, value.to_s
end

#write_i(name, value) ⇒ Object

Write value to a registry value named name.

The value type is REG_SZ(write_s), REG_DWORD(write_i), or REG_BINARY(write_bin).



796
797
798
 
# File 'lib/win32/registry.rb', line 796

def write_i(name, value)
  write name, REG_DWORD, value.to_i
end

#write_s(name, value) ⇒ Object

Write value to a registry value named name.

The value type is REG_SZ(write_s), REG_DWORD(write_i), or REG_BINARY(write_bin).



786
787
788
 
# File 'lib/win32/registry.rb', line 786

def write_s(name, value)
  write name, REG_SZ, value.to_s
end