Delphi应用程序配置的最佳方法是什么？

我会自己回答这个问题,但如果你比我快,或者不喜欢我的解决方案,请随时提供你的答案.我只是想出了这个想法,并希望对此有一些看法.

目标：一种可读的配置类(如INI文件),但不必写入(并且在添加了新的配置项之后进行调整)加载和保存方法.

我想创建一个类

TMyConfiguration = class (TConfiguration)
  ...
  property ShowFlags : Boolean read FShowFlags write FShowFlags;
  property NumFlags : Integer read FNumFlags write FNumFlags;
end;

调用TMyConfiguration.Save(继承自TConfiguration)应该创建一个文件

[Options]
ShowFlags=1
NumFlags=42

问题：最好的方法是什么？

解决方法

这是我提出的解决方案.

我有一个基础课

TConfiguration = class
protected
  type
    TCustomSaveMethod = function  (Self : TObject; P : Pointer) : String;
    TCustomLoadMethod = procedure (Self : TObject; const Str : String);
public
  procedure Save (const FileName : String);
  procedure Load (const FileName : String);
end;

Load方法看起来像这样(相应地保存方法)：

procedure TConfiguration.Load (const FileName : String);
const
  PropNotFound = '_PROP_NOT_FOUND_';
var
  IniFile : TIniFile;
  Count : Integer;
  List : PPropList;
  TypeName,PropName,InputString,MethodName : String;
  LoadMethod : TCustomLoadMethod;
begin
  IniFile := TIniFile.Create (FileName);
  try
    Count := GetPropList (Self.ClassInfo,tkProperties,nil) ;
    GetMem (List,Count * SizeOf (PPropInfo)) ;
    try
      GetPropList (Self.ClassInfo,List);
      for I := 0 to Count-1 do
        begin
        TypeName  := String (List [I]^.PropType^.Name);
        PropName  := String (List [I]^.Name);
        InputString := IniFile.ReadString ('Options',PropNotFound);
        if (InputString = PropNotFound) then
          Continue;
        MethodName := 'Load' + TypeName;
        LoadMethod := Self.MethodAddress (MethodName);
        if not Assigned (LoadMethod) then
          raise EConfigLoadError.Create ('No load method for custom type ' + TypeName);
        LoadMethod (Self,InputString);
        end;
    finally
      FreeMem (List,Count * SizeOf (PPropInfo));
    end;
  finally
    FreeAndNil (IniFile);
  end;

基类可以为delphi默认类型提供加载和保存方法.然后,我可以为我的应用程序创建一个配置,如下所示：

TMyConfiguration = class (TConfiguration)
...
published
  function  SaveTObject (P : Pointer) : String;
  procedure LoadTObject (const Str : String);
published
  property BoolOption : Boolean read FBoolOption write FBoolOption;
  property ObjOption : TObject read FObjOption write FObjOption;
end;

自定义保存方法的示例：

function TMyConfiguration.SaveTObject (P : Pointer) : String;
var
  Obj : TObject;
begin
  Obj := TObject (P);
  Result := Obj.ClassName;  // does not make sense; only example;
end;