[28] | 1 | unit URegistry;
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| 2 |
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| 3 | {$MODE Delphi}
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| 4 |
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| 5 | interface
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| 6 |
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| 7 | uses
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| 8 | Classes, Registry;
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| 9 |
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| 10 | type
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[38] | 11 | TRegistryRoot = (rrKeyClassesRoot, rrKeyCurrentUser, rrKeyLocalMachine,
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| 12 | rrKeyUsers, rrKeyPerformanceData, rrKeyCurrentConfig, rrKeyDynData);
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[28] | 13 |
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| 14 | { TRegistryContext }
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| 15 |
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| 16 | TRegistryContext = record
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| 17 | RootKey: HKEY;
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| 18 | Key: string;
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| 19 | class operator Equal(A, B: TRegistryContext): Boolean;
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[38] | 20 | function Create(RootKey: TRegistryRoot; Key: string): TRegistryContext; overload;
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| 21 | function Create(RootKey: HKEY; Key: string): TRegistryContext; overload;
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[28] | 22 | end;
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| 23 |
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| 24 | { TRegistryEx }
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| 25 |
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| 26 | TRegistryEx = class(TRegistry)
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| 27 | private
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| 28 | function GetCurrentContext: TRegistryContext;
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| 29 | procedure SetCurrentContext(AValue: TRegistryContext);
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| 30 | public
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| 31 | function ReadBoolWithDefault(const Name: string;
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| 32 | DefaultValue: Boolean): Boolean;
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| 33 | function ReadIntegerWithDefault(const Name: string; DefaultValue: Integer): Integer;
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| 34 | function ReadStringWithDefault(const Name: string; DefaultValue: string): string;
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| 35 | function ReadFloatWithDefault(const Name: string;
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| 36 | DefaultValue: Double): Double;
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| 37 | function DeleteKeyRecursive(const Key: string): Boolean;
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| 38 | function OpenKey(const Key: string; CanCreate: Boolean): Boolean;
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| 39 | property CurrentContext: TRegistryContext read GetCurrentContext write SetCurrentContext;
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| 40 | end;
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| 41 |
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[38] | 42 | const
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| 43 | RegistryRootHKEY: array[TRegistryRoot] of HKEY = (HKEY_CLASSES_ROOT,
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| 44 | HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE, HKEY_USERS, HKEY_PERFORMANCE_DATA,
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| 45 | HKEY_CURRENT_CONFIG, HKEY_DYN_DATA);
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[28] | 46 |
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| 47 | implementation
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| 48 |
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| 49 |
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| 50 | { TRegistryContext }
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| 51 |
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| 52 | class operator TRegistryContext.Equal(A, B: TRegistryContext): Boolean;
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| 53 | begin
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| 54 | Result := (A.Key = B.Key) and (A.RootKey = B.RootKey);
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| 55 | end;
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| 56 |
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[38] | 57 | function TRegistryContext.Create(RootKey: TRegistryRoot; Key: string): TRegistryContext;
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| 58 | begin
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| 59 | Result.RootKey := RegistryRootHKEY[RootKey];
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| 60 | Result.Key := Key;
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| 61 | end;
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| 62 |
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| 63 | function TRegistryContext.Create(RootKey: HKEY; Key: string): TRegistryContext;
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| 64 | begin
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| 65 | Result.RootKey := RootKey;
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| 66 | Result.Key := Key;
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| 67 | end;
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| 68 |
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[28] | 69 | { TRegistryEx }
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| 70 |
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| 71 | function TRegistryEx.ReadIntegerWithDefault(const Name: string;
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| 72 | DefaultValue: Integer): Integer;
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| 73 | begin
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| 74 | if ValueExists(Name) then Result := ReadInteger(Name)
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| 75 | else begin
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| 76 | WriteInteger(Name, DefaultValue);
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| 77 | Result := DefaultValue;
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| 78 | end;
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| 79 | end;
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| 80 |
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| 81 | function TRegistryEx.ReadStringWithDefault(const Name: string;
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| 82 | DefaultValue: string): string;
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| 83 | begin
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| 84 | if ValueExists(Name) then Result := ReadString(Name)
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| 85 | else begin
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| 86 | WriteString(Name, DefaultValue);
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| 87 | Result := DefaultValue;
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| 88 | end;
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| 89 | end;
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| 90 |
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| 91 | function TRegistryEx.ReadFloatWithDefault(const Name: string;
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| 92 | DefaultValue: Double): Double;
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| 93 | begin
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| 94 | if ValueExists(Name) then Result := ReadFloat(Name)
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| 95 | else begin
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| 96 | WriteFloat(Name, DefaultValue);
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| 97 | Result := DefaultValue;
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| 98 | end;
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| 99 | end;
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| 100 |
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| 101 | function TRegistryEx.DeleteKeyRecursive(const Key: string): Boolean;
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| 102 | var
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| 103 | SubKeys: TStringList;
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| 104 | I: Integer;
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| 105 | begin
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| 106 | try
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| 107 | SubKeys := TStringList.Create;
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| 108 | if OpenKey(Key, False) and HasSubKeys then begin
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| 109 | GetKeyNames(SubKeys);
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| 110 | for I := 0 to SubKeys.Count - 1 do
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| 111 | DeleteKeyRecursive(Key + '\' + SubKeys[I]);
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| 112 | end;
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| 113 | Result := DeleteKey(Key);
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| 114 | finally
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| 115 | SubKeys.Free;
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| 116 | end;
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| 117 | end;
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| 118 |
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| 119 | function TRegistryEx.OpenKey(const Key: string; CanCreate: Boolean): Boolean;
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| 120 | begin
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| 121 | {$IFDEF Linux}
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| 122 | CloseKey;
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| 123 | {$ENDIF}
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| 124 | Result := inherited OpenKey(Key, CanCreate);
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| 125 | end;
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| 126 |
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| 127 | function TRegistryEx.GetCurrentContext: TRegistryContext;
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| 128 | begin
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| 129 | Result.Key := CurrentPath;
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| 130 | Result.RootKey := RootKey;
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| 131 | end;
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| 132 |
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| 133 | procedure TRegistryEx.SetCurrentContext(AValue: TRegistryContext);
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| 134 | begin
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| 135 | RootKey := AValue.RootKey;
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| 136 | OpenKey(AValue.Key, True);
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| 137 | end;
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| 138 |
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| 139 | function TRegistryEx.ReadBoolWithDefault(const Name: string;
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| 140 | DefaultValue: Boolean): Boolean;
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| 141 | begin
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| 142 | if ValueExists(Name) then Result := ReadBool(Name)
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| 143 | else begin
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| 144 | WriteBool(Name, DefaultValue);
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| 145 | Result := DefaultValue;
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| 146 | end;
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| 147 | end;
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| 148 |
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| 149 | end.
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