?? regunit.pas

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  Result := ReadInteger(Name) <> 0;
end;

procedure TRegistry.WriteFloat(const Name: string; Value: Double);
begin
  PutData(Name, @Value, SizeOf(Double), rdBinary);
end;

function TRegistry.ReadFloat(const Name: string): Double;
var
  Len: Integer;
  RegData: TRegDataType;
begin
  Len := GetData(Name, @Result, SizeOf(Double), RegData);
  //if (RegData <> rdBinary) or (Len <> SizeOf(Double)) then
  //  ReadError(Name);
end;

procedure TRegistry.WriteCurrency(const Name: string; Value: Currency);
begin
  PutData(Name, @Value, SizeOf(Currency), rdBinary);
end;

function TRegistry.ReadCurrency(const Name: string): Currency;
var
  Len: Integer;
  RegData: TRegDataType;
begin
  Len := GetData(Name, @Result, SizeOf(Currency), RegData);
  //if (RegData <> rdBinary) or (Len <> SizeOf(Currency)) then
  //  ReadError(Name);
end;

procedure TRegistry.WriteDateTime(const Name: string; Value: TDateTime);
begin
  PutData(Name, @Value, SizeOf(TDateTime), rdBinary);
end;

function TRegistry.ReadDateTime(const Name: string): TDateTime;
var
  Len: Integer;
  RegData: TRegDataType;
begin
  Len := GetData(Name, @Result, SizeOf(TDateTime), RegData);
  //if (RegData <> rdBinary) or (Len <> SizeOf(TDateTime)) then
  //  ReadError(Name);
end;

procedure TRegistry.WriteDate(const Name: string; Value: TDateTime);
begin
  WriteDateTime(Name, Value);
end;

function TRegistry.ReadDate(const Name: string): TDateTime;
begin
  Result := ReadDateTime(Name);
end;

procedure TRegistry.WriteTime(const Name: string; Value: TDateTime);
begin
  WriteDateTime(Name, Value);
end;

function TRegistry.ReadTime(const Name: string): TDateTime;
begin
  Result := ReadDateTime(Name);
end;

procedure TRegistry.WriteBinaryData(const Name: string; var Buffer; BufSize: Integer);
begin
  PutData(Name, @Buffer, BufSize, rdBinary);
end;

function TRegistry.ReadBinaryData(const Name: string; var Buffer; BufSize: Integer): Integer;
var
  RegData: TRegDataType;
  Info: TRegDataInfo;
begin
  if GetDataInfo(Name, Info) then
  begin
    Result := Info.DataSize;
    RegData := Info.RegData;
    if ((RegData = rdBinary) or (RegData = rdUnknown)) and (Result <= BufSize) then
      GetData(Name, @Buffer, Result, RegData)
   // else ReadError(Name);
  end else
    Result := 0;
end;

procedure TRegistry.PutData(const Name: string; Buffer: Pointer;
  BufSize: Integer; RegData: TRegDataType);
var
  DataType: Integer;
begin
  DataType := RegDataToDataType(RegData);
  RegSetValueEx(CurrentKey, PChar(Name), 0, DataType, Buffer,
    BufSize) ;
end;

function TRegistry.GetData(const Name: string; Buffer: Pointer;
  BufSize: Integer; var RegData: TRegDataType): Integer;
var
  DataType: Integer;
begin
  DataType := REG_NONE;
  RegQueryValueEx(CurrentKey, PChar(Name), nil, @DataType, PByte(Buffer),
    @BufSize) ;
  Result := BufSize;
  RegData := DataTypeToRegData(DataType);
end;

function TRegistry.HasSubKeys: Boolean;
var
  Info: TRegKeyInfo;
begin
  Result := GetKeyInfo(Info) and (Info.NumSubKeys > 0);
end;

function TRegistry.ValueExists(const Name: string): Boolean;
var
  Info: TRegDataInfo;
begin
  Result := GetDataInfo(Name, Info);
end;

function TRegistry.GetKey(const Key: string): HKEY;
var
  S: string;
  Relative: Boolean;
begin
  S := Key;
  Relative := IsRelative(S);
  if not Relative then Delete(S, 1, 1);
  Result := 0;
  RegOpenKeyEx(GetBaseKey(Relative), PChar(S), 0, FAccess, Result);
end;

function TRegistry.RegistryConnect(const UNCName: string): Boolean;
var
  TempKey: HKEY;
begin
  Result := RegConnectRegistry(PChar(UNCname), RootKey, TempKey) = ERROR_SUCCESS;
  if Result then
  begin
    RootKey := TempKey;
    FCloseRootKey := True;
  end;
end;

function TRegistry.LoadKey(const Key, FileName: string): Boolean;
var
  S: string;
begin
  S := Key;
  if not IsRelative(S) then Delete(S, 1, 1);
  Result := RegLoadKey(RootKey, PChar(S), PChar(FileName)) = ERROR_SUCCESS;
end;

function TRegistry.UnLoadKey(const Key: string): Boolean;
var
  S: string;
begin
  S := Key;
  if not IsRelative(S) then Delete(S, 1, 1);
  Result := RegUnLoadKey(RootKey, PChar(S)) = ERROR_SUCCESS;
end;

function TRegistry.RestoreKey(const Key, FileName: string): Boolean;
var
  RestoreKey: HKEY;
begin
  Result := False;
  RestoreKey := GetKey(Key);
  if RestoreKey <> 0 then
  try
    Result := RegRestoreKey(RestoreKey, PChar(FileName), 0) = ERROR_SUCCESS;
  finally
    RegCloseKey(RestoreKey);
  end;
end;

function TRegistry.ReplaceKey(const Key, FileName, BackUpFileName: string): Boolean;
var
  S: string;
  Relative: Boolean;
begin
  S := Key;
  Relative := IsRelative(S);
  if not Relative then Delete(S, 1, 1);
  Result := RegReplaceKey(GetBaseKey(Relative), PChar(S),
    PChar(FileName), PChar(BackUpFileName)) = ERROR_SUCCESS;
end;

function TRegistry.SaveKey(const Key, FileName: string): Boolean;
var
  SaveKey: HKEY;
begin
  Result := False;
  SaveKey := GetKey(Key);
  if SaveKey <> 0 then
  try
    Result := RegSaveKey(SaveKey, PChar(FileName), nil) = ERROR_SUCCESS;
  finally
    RegCloseKey(SaveKey);
  end;
end;

function TRegistry.KeyExists(const Key: string): Boolean;
var
  TempKey: HKEY;
  OldAccess: Longword;
begin
  OldAccess := FAccess;
  try
    FAccess := STANDARD_RIGHTS_READ or KEY_QUERY_VALUE or KEY_ENUMERATE_SUB_KEYS;
    TempKey := GetKey(Key);
    if TempKey <> 0 then RegCloseKey(TempKey);
    Result := TempKey <> 0;
  finally
    FAccess := OldAccess;
  end;
end;

procedure TRegistry.RenameValue(const OldName, NewName: string);
var
  Len: Integer;
  RegData: TRegDataType;
  Buffer: PChar;
begin
  if ValueExists(OldName) and not ValueExists(NewName) then
  begin
    Len := GetDataSize(OldName);
    if Len > 0 then
    begin
      Buffer := AllocMem(Len);
      try
        Len := GetData(OldName, Buffer, Len, RegData);
        DeleteValue(OldName);
        PutData(NewName, Buffer, Len, RegData);
      finally
        FreeMem(Buffer);
      end;
    end;
  end;
end;

procedure TRegistry.MoveKey(const OldName, NewName: string; Delete: Boolean);
var
  SrcKey, DestKey: HKEY;

  procedure MoveValue(SrcKey, DestKey: HKEY; const Name: string);
  var
    Len: Integer;
    OldKey, PrevKey: HKEY;
    Buffer: PChar;
    RegData: TRegDataType;
  begin
    OldKey := CurrentKey;
    SetCurrentKey(SrcKey);
    try
      Len := GetDataSize(Name);
      if Len > 0 then
      begin
        Buffer := AllocMem(Len);
        try
          Len := GetData(Name, Buffer, Len, RegData);
          PrevKey := CurrentKey;
          SetCurrentKey(DestKey);
          try
            PutData(Name, Buffer, Len, RegData);
          finally
            SetCurrentKey(PrevKey);
          end;
        finally
          FreeMem(Buffer);
        end;
      end;
    finally
      SetCurrentKey(OldKey);
    end;
  end;

  procedure CopyValues(SrcKey, DestKey: HKEY);
  var
    Len: DWORD;
    I: Integer;
    KeyInfo: TRegKeyInfo;
    S: string;
    OldKey: HKEY;
  begin
    OldKey := CurrentKey;
    SetCurrentKey(SrcKey);
    try
      if GetKeyInfo(KeyInfo) then
      begin
        MoveValue(SrcKey, DestKey, '');
        SetString(S, nil, KeyInfo.MaxValueLen + 1);
        for I := 0 to KeyInfo.NumValues - 1 do
        begin
          Len := KeyInfo.MaxValueLen + 1;
          if RegEnumValue(SrcKey, I, PChar(S), Len, nil, nil, nil, nil) = ERROR_SUCCESS then
            MoveValue(SrcKey, DestKey, PChar(S));
        end;
      end;
    finally
      SetCurrentKey(OldKey);
    end;
  end;

  procedure CopyKeys(SrcKey, DestKey: HKEY);
  var
    Len: DWORD;
    I: Integer;
    Info: TRegKeyInfo;
    S: string;
    OldKey, PrevKey, NewSrc, NewDest: HKEY;
  begin
    OldKey := CurrentKey;
    SetCurrentKey(SrcKey);
    try
      if GetKeyInfo(Info) then
      begin
        SetString(S, nil, Info.MaxSubKeyLen + 1);
        for I := 0 to Info.NumSubKeys - 1 do
        begin
          Len := Info.MaxSubKeyLen + 1;
          if RegEnumKeyEx(SrcKey, I, PChar(S), Len, nil, nil, nil, nil) = ERROR_SUCCESS then
          begin
            NewSrc := GetKey(PChar(S));
            if NewSrc <> 0 then
            try
              PrevKey := CurrentKey;
              SetCurrentKey(DestKey);
              try
                CreateKey(PChar(S));
                NewDest := GetKey(PChar(S));
                try
                  CopyValues(NewSrc, NewDest);
                  CopyKeys(NewSrc, NewDest);
                finally
                  RegCloseKey(NewDest);
                end;
              finally
                SetCurrentKey(PrevKey);
              end;
            finally
              RegCloseKey(NewSrc);
            end;
          end;
        end;
      end;
    finally
      SetCurrentKey(OldKey);
    end;
  end;

begin
  if KeyExists(OldName) and not KeyExists(NewName) then
  begin
    SrcKey := GetKey(OldName);
    if SrcKey <> 0 then
    try
      CreateKey(NewName);
      DestKey := GetKey(NewName);
      if DestKey <> 0 then
      try
        CopyValues(SrcKey, DestKey);
        CopyKeys(SrcKey, DestKey);
        if Delete then DeleteKey(OldName);
      finally
        RegCloseKey(DestKey);
      end;
    finally
      RegCloseKey(SrcKey);
    end;
  end;
end;

constructor TRegIniFile.Create(const FileName: string);
begin
  Create(FileName, KEY_ALL_ACCESS);
end;

constructor TRegIniFile.Create(const FileName: string; AAccess: LongWord);
begin
  inherited Create(AAccess);
  FFilename := FileName;
  OpenKey(FileName, True);
end;

function TRegIniFile.ReadString(const Section, Ident, Default: string): string;
var
  Key, OldKey: HKEY;
begin
  Key := GetKey(Section);
  if Key <> 0 then
  try
    OldKey := CurrentKey;
    SetCurrentKey(Key);
    try
      if ValueExists(Ident) then
        Result := inherited ReadString(Ident) else
        Result := Default;
    finally
      SetCurrentKey(OldKey);
    end;
  finally
    RegCloseKey(Key);
  end
  else Result := Default;
end;

procedure TRegIniFile.WriteString(const Section, Ident, Value: String);
var
  Key, OldKey: HKEY;
begin
  CreateKey(Section);
  Key := GetKey(Section);
  if Key <> 0 then
  try
    OldKey := CurrentKey;
    SetCurrentKey(Key);
    try
      inherited WriteString(Ident, Value);
    finally
      SetCurrentKey(OldKey);
    end;
  finally
    RegCloseKey(Key);
  end;
end;

function TRegIniFile.ReadInteger(const Section, Ident: string; Default: LongInt): LongInt;
var
  Key, OldKey: HKEY;
  S: string;
begin
  Key := GetKey(Section);
  if Key <> 0 then
  try
    OldKey := CurrentKey;
    SetCurrentKey(Key);
    try
      if ValueExists(Ident) then
      begin
        S := inherited ReadString(Ident);
        Result := StrToInt(S, Default);
      end else
        Result := Default;
    finally
      SetCurrentKey(OldKey);
    end;
  finally
    RegCloseKey(Key);
  end
  else Result := Default;
end;

procedure TRegIniFile.WriteInteger(const Section, Ident: string; Value: LongInt);
var
  Key, OldKey: HKEY;
begin
  CreateKey(Section);
  Key := GetKey(Section);
  if Key <> 0 then
  try
    OldKey := CurrentKey;
    SetCurrentKey(Key);
    try
      inherited WriteString(Ident, IntToStr(Value));
    finally
      SetCurrentKey(OldKey);
    end;
  finally
    RegCloseKey(Key);
  end;
end;

function TRegIniFile.ReadBool(const Section, Ident: string; Default: Boolean): Boolean;
begin
  Result := ReadInteger(Section, Ident, Ord(Default)) <> 0;
end;

procedure TRegIniFile.WriteBool(const Section, Ident: string; Value: Boolean);
const
  Values: array[Boolean] of string = ('0', '1');
var
  Key, OldKey: HKEY;
begin
  CreateKey(Section);
  Key := GetKey(Section);
  if Key <> 0 then
  try
    OldKey := CurrentKey;
    SetCurrentKey(Key);
    try
      inherited WriteString(Ident, Values[Value]);
    finally
      SetCurrentKey(OldKey);
    end;
  finally
    RegCloseKey(Key);
  end;
end;

procedure TRegIniFile.ReadSection(const Section: string; Strings: TStrings);
var
  Key, OldKey: HKEY;
begin
  Key := GetKey(Section);
  if Key <> 0 then
  try
    OldKey := CurrentKey;
    SetCurrentKey(Key);
    try
      inherited GetValueNames(Strings);
    finally
      SetCurrentKey(OldKey);
    end;
  finally
    RegCloseKey(Key);
  end;
end;

procedure TRegIniFile.ReadSections(Strings: TStrings);
begin
  GetKeyNames(Strings);
end;

procedure TRegIniFile.ReadSectionValues(const Section: string; Strings: TStrings);
var
  KeyList: TStrings;
  I: Integer;
begin
  clear(KeyList);
  try
    ReadSection(Section, KeyList);
    try
      for I := 0 to KeyList.Count - 1 do
        Strings.Stringss[I] := ReadString(Section, KeyList.stringss[I], '');
    finally

    end;
  finally

  end;
end;

procedure TRegIniFile.EraseSection(const Section: string);
begin
  inherited DeleteKey(Section);
end;

procedure TRegIniFile.DeleteKey(const Section, Ident: String);
var
  Key, OldKey: HKEY;
begin
  Key := GetKey(Section);
  if Key <> 0 then
  try
    OldKey := CurrentKey;
    SetCurrentKey(Key);
    try
      inherited DeleteValue(Ident);
    finally
      SetCurrentKey(OldKey);
    end;
  finally
    RegCloseKey(Key);
  end;
end;

end.
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