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Project   Dcu2Pas Version 1.3
Purpose   Decompile a D2-D7, K1-K3's dcu(dpu) file to Delphi source as origin as
          possible, without or with minimal modifications, then recompile to new
          one under other Delphi versions
Author    Nengwen Zhuo(卓能文)
Homes     http://soarowl.uhome.net, http://www.websamba.com/soarowl,
          http://soarowl.0catch.com
Emails    soarowl@yeah.net, soarowl@sina.com.cn
Released  2003-02-10
Lastest   home/dl/Dcu2Pas.rar(zip)

          FOR RESTORE YOUR LOST SOURCES AND OPTIMIZE YOUR CODES ONLY!!!

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This project is in very early stage, no document yet. To see some features, 
reference my test cases file -- test.pas and the output file test.int, please.
The output maybe more clear organised than source files!!!

For further development, any suggestions and ideas are welcome. I have no time
to update my homepages for a long time ;-)

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Usage

Run Dcu2pas, set properly options, select a desired dcu file double click to
decompile it

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Features
  - Supports the following type declarations and their typed consts:
    * Type redeclarations, for example:
        type
          MyTypeString = type String;
    * All integer types(Byte, Cardinal, Int64, Integer, Longint, Longword,
      Shortint, Smallint, Word)
    * All char types(AnsiChar, Char, WideChar)
    * All boolean types(Boolean, ByteBool, LongBool, WordBool)
    * Enumerated type, subrange of enumerated type and set of enumerated type
      For examples:
        type
          Size = (Small = 5, Medium = 10, Large = Small + Medium);
          TMySize = Medium..Large;
        type
          TEnumSet = set of (Club, Diamond, Heart, Spade);
        const
          vcSet4: TEnumSet = [Club,Spade];
    * All real types(Comp, Currency, Double, Extended, Real, Real48, Single)
    * All string types(AnsiString, ShortString, String, String[XX], WideString)
    * Array type(with/without packed keyword), dynamic array and
      multidimensional dynamic array
    * Set type
    * Record type, with any variant parts in records. But if a record has any
      variant parts in it, the typed const may can't correctly decompile
    * Function/procedure type declaration
  - Support threadvar
  - Support resourcestring
  - Support class type, interface inheritation
  - Support object type
  - Support interface
  - Code decompiler to BASM, then a decpompiled file can recompile under other
    Delphi versions...
  - Code decompiler to Object-Pascal. I have some ideas, but I have no time,
    maybe in near future, I will code for it!

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Update history

Legend:
- Bug fixed
* Algorithm enhanced
+ New featuer added

Ver2.0

Ver1.3
2003-02-10
  * Code decompiler redesigned
  * Partly support D7
Ver1.2
2002-07-28
  + Delete procedure, contructor, destructor frame
2002-07-18
  + Procedure variable const
  + Now can distinguish:
      vc1: PChar ='test';
      vc2: PChar = @vc1;
2002-05-28(Ver1.1)
  + Now correctly process interface properties and argument default values
  + Support resources, for example: {%R *.dfm}, {$R *.res}
2002-05-26
  + Support default arguments
  + Support interface
2002-05-25
  + Support object type
  + Support resourcestring
  + Support threadvar
  + Support function/procedure type
2002-05-24
  + Support file type
  + Support set of enumerated type const decompiler
  + Support enumerated type const decompiler
  + Support subrange of enumerated type
  + Support dynamic array type
  - Array [enumerted type] of ...
  - Bugs in [packed] array fixed
  - Bugs in [packed] record fixed
  - Bugs in enumerated type fixed
  - Bugs in classify interface and implement declarations fixed