INDY10 BASE64编码

Posted 2020-11-22 hnxxcxg

INDY10 BASE64编码

DELPHI自带的BASE64单元，在项目中使用发现非常没有效率，INDY10的好用。

uses IdCoderMIME

BASE64编码类：TIdEncoderMIME

BASE64编码接口

type
  TIdEncoder = class(TIdBaseComponent)
  public
    function Encode(const AIn: string; AByteEncoding: IIdTextEncoding = nil
      {$IFDEF STRING_IS_ANSI}; ASrcEncoding: IIdTextEncoding = nil{$ENDIF}
      ): string; overload;
    procedure Encode(const AIn: string; ADestStrings: TStrings; AByteEncoding: IIdTextEncoding = nil
      {$IFDEF STRING_IS_ANSI}; ASrcEncoding: IIdTextEncoding = nil{$ENDIF}
      ); overload;
    procedure Encode(const AIn: string; ADestStream: TStream; AByteEncoding: IIdTextEncoding = nil
      {$IFDEF STRING_IS_ANSI}; ASrcEncoding: IIdTextEncoding = nil{$ENDIF}
      ); overload;

    function Encode(ASrcStream: TStream; const ABytes: Integer = -1): string; overload;
    procedure Encode(ASrcStream: TStream; ADestStrings: TStrings; const ABytes: Integer = -1); overload;
    procedure Encode(ASrcStream: TStream; ADestStream: TStream; const ABytes: Integer = -1); overload; virtual; abstract;

    class function EncodeString(const AIn: string; AByteEncoding: IIdTextEncoding = nil
      {$IFDEF STRING_IS_ANSI}; ASrcEncoding: IIdTextEncoding = nil{$ENDIF}
      ): string; overload;
    class procedure EncodeString(const AIn: string; ADestStrings: TStrings;
      AByteEncoding: IIdTextEncoding = nil
      {$IFDEF STRING_IS_ANSI}; ASrcEncoding: IIdTextEncoding = nil{$ENDIF}
      ); overload;
    class procedure EncodeString(const AIn: string; ADestStream: TStream;
      AByteEncoding: IIdTextEncoding = nil
      {$IFDEF STRING_IS_ANSI}; ASrcEncoding: IIdTextEncoding = nil{$ENDIF}
      ); overload;

    class function EncodeBytes(const ABytes: TIdBytes): string; overload;
    class procedure EncodeBytes(const ABytes: TIdBytes; ADestStrings: TStrings); overload;
    class procedure EncodeBytes(const ABytes: TIdBytes; ADestStream: TStream); overload;

    class function EncodeStream(ASrcStream: TStream; const ABytes: Integer = -1): string; overload;
    class procedure EncodeStream(ASrcStream: TStream; ADestStrings: TStrings; const ABytes: Integer = -1); overload;
    class procedure EncodeStream(ASrcStream: TStream; ADestStream: TStream; const ABytes: Integer = -1); overload;
  end;

　BASE64解码类：TIdDecoderMIME

解码接口

  TIdDecoder = class(TIdBaseComponent)
  protected
    FStream: TStream;
  public
    procedure DecodeBegin(ADestStream: TStream); virtual;
    procedure DecodeEnd; virtual;

    procedure Decode(const AIn: string); overload;
    procedure Decode(ASrcStream: TStream; const ABytes: Integer = -1); overload; virtual; abstract;

    class function DecodeString(const AIn: string; AByteEncoding: IIdTextEncoding = nil
      {$IFDEF STRING_IS_ANSI}; ADestEncoding: IIdTextEncoding = nil{$ENDIF}
      ): string;
    class function DecodeBytes(const AIn: string): TIdBytes;
    class procedure DecodeStream(const AIn: string; ADestStream: TStream);
  end;