How to define application version in one place for multiple applications?

Question

We have a system which consists of numerous applications. All applications have their version changed at the same time. Currently, when we release a new version, we have to manually open the project options of each application and change the version one by one. Is there any way to compile all applications on the same version, for example, save it in a global file and upon compilation, read this file and assign that version to the project? I'm just trying to eliminate too many steps, because we plan on changing the version numbers more frequently. I'd like to change it in one place only. Can this be done? and how?

Answer 1

You can create a VERSIONINFO resource, in a plain text file (eg., Versioninfo.rc)

1 VERSIONINFO
FILEVERSION 2,0,0,0
PRODUCTVERSION 2,0,0,0
FILEOS 0x4
FILETYPE 0x1
{
BLOCK "StringFileInfo"
{
    BLOCK "040904E4"
    {
        VALUE "CompanyName", "Your Company Name Here\0"
        VALUE "FileDescription", "Your File Description Here\0"
        VALUE "FileVersion", "2.0.0.0\0"
        VALUE "InternalName", "Your Internal Name\0"
        VALUE "LegalCopyright", "© Your Copyright Notice\0"
        VALUE "LegalTrademarks", "Your Trademark Notice\0"
        VALUE "OriginalFilename", "YourExeName\0"
        VALUE "ProductName", "Your Product Name\0"
        VALUE "ProductVersion", "2.0.0.0\0"
        VALUE "Comments", "No Comments\0"
    }
}

BLOCK "VarFileInfo"
{
    VALUE "Translation", 0x0409 0x04E4
}
}

Note: The C-style null terminators (\0) are needed at the end of each item as shown in order for the resource compiler to properly terminate the strings. Otherwise, when you use Explorer to display the version information for the executable you may get garbled or partially concatenated values.

Add a line to your project source file:

{$R VersionInfo.res VersionInfo.rc}

I suggest putting the common version info resource into an externals reference in your version control system, and then you can just check it out into each project's folder and update it easily.

Do a Project->Build, and your version info is embedded in the .exe. You can verify by using Windows Explorer and viewing the properties of your app.

There's a couple of posts (one by me and one in a response by Jim Fleming) in the Embarcadero Delphi forums at CodeNewsFast archives. Mine is [here], where, I describe step-by-step how to use a pre-build event in your project to update the version number in the resource script I posted above.

Jim posts a few replies, but about a dozen posts or so down there's source for an executable that can be called from the pre-build event that works for him. (There are some things I'd do differently, like letting the IDE pass the project name and location on the command line; how to do so is described in the step-by-step article. I'd also handle the version parsing and incrementing differently, but the basic app is a good starting location.)

Embarcadero's groups are currently down, but I was able to retrieve Jim's code from CodeNewsFast as well, and can reproduce it here:

Ken,

Thanks to you, I got it to work.

Just in case anyone else wants to implement this solution, Below you will find the necessary steps and auxiliary program.

Jim Fleming

A) Create your Version Info resource file in your project directory or wherever, with the following

contents, and file extension .rc:

// Note the \000 !!!! Here and elsewhere below !!!! 
// C string terminator !!!
#define CONST_VERSION "4.1.1.1003\000" 

1 VERSIONINFO
FILEVERSION 1,0,0,1
PRODUCTVERSION 1,0,0,1
FILEOS 0x4
FILETYPE 0x1
{
BLOCK "StringFileInfo"
{

BLOCK "040904E4" // Will need changing if your language is not English and char-set not 1252 (multilingual).
{
VALUE "CompanyName", "Whatever\000"
VALUE "FileDescription", "Whatever\000"
VALUE "FileVersion", CONST_VERSION
VALUE "InternalName", "My Internal Name\000"
VALUE "LegalCopyright", "Copyright © whoever\000"
VALUE "LegalTrademarks", "\000"
VALUE "OriginalFileName", "If you wish\000"
VALUE "ProductName", "What pleases you\000"
VALUE "ProductVersion", CONST_VERSION
VALUE "Comments", "Anything you wish to add\000"
}
}
BLOCK "VarFileInfo"
{
VALUE "Translation", 0x0409 0x04E4
}
}

B) Create a new project in some folder, code of only module should be similar to:

unit FormIncrementBuildNumber;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants,
  System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs,
  Vcl.StdCtrls, System.IOUtils, System.StrUtils;


type
  TIncrementBuildNumber = class(TForm)
    IncrementingBuildNumberLabel: TLabel;
    procedure FormShow (Sender: TObject);
    procedure FormActivate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  IncrementBuildNumber: TIncrementBuildNumber;

implementation

{$R *.dfm}

procedure TIncrementBuildNumber.FormShow (Sender: TObject);
var
  Resource_File_Contents:       TStringList;
  Full_File_Name_And_Path:      string;
  First_Line_Of_File:           string;
  Position_First_Dot:           Integer;
  Position_Second_Dot:          Integer;
  Position_Third_Dot:           Integer;
  Position_Trailing_Backslash:  Integer;
  Start_of_Build_Number:        Integer;
  Length_of_Build_Number:       Integer;
  Build_Number_In_ASCII:        string;
  Build_Number_Numeric:         Integer;
  Old_Resource_File_Name:       string;
  Success:      Boolean;
begin
  if (System.ParamCount <> 1) then
  begin
    ShowMessage ('Resource File name not in first command-line parameter.');
    Exit;
  end;

  Full_File_Name_And_Path := System.ParamStr(1);
  if (not TFile.Exists(Full_File_Name_And_Path, False)) then
  begin
    ShowMessage ('Resource file ' + Full_File_Name_And_Path + 
                 ' not found.');
    Exit;
  end;

  Resource_File_Contents := TStringList.Create;
  try
    Resource_File_Contents.LoadFromFile(Full_File_Name_And_Path);
    First_Line_Of_File := Resource_File_Contents.Strings[0];

    if (Copy(First_Line_Of_File, 1, 21) <> '#define CONST_VERSION') then
    begin
      ShowMessage ('First line of Version Info must start with "#define CONST_VERSION".' + 
                   #13 + 'Version not incremented.');
      Exit;
    end;

    Position_First_Dot := Pos('.', First_Line_Of_File);
    if (Position_First_Dot = 0) then
    begin
      ShowMessage ('Version must have format "a.b.c.d".' + #13 + 
                   'Build Number not incremented.');
      Exit;
    end;

    Position_Second_Dot := PosEx('.', First_Line_Of_File, 
                                 Position_First_Dot+1);
    if (Position_Second_Dot = 0) then
    begin
      ShowMessage ('Version must have format "a.b.c.d".' + #13 + 
                   'Build Number not incremented.');
      Exit;
    end;

    Position_Third_Dot := PosEx('.', First_Line_Of_File, 
                                Position_Second_Dot+1);

    if (Position_Third_Dot = 0) then
    begin
      ShowMessage ('Version must have format "a.b.c.d".' + #13 + 
                   'Build Number not incremented.');

      Exit;
    end;

    Position_Trailing_Backslash := PosEx('\', First_Line_Of_File, 
                                         Position_Third_Dot+1);

    if (Position_Trailing_Backslash = 0) then
    begin
      ShowMessage ('Version must have format "a.b.c.d\000".' + #13 + 
                   'Build Number not incremented.');
      Exit;
    end;

    Start_of_Build_Number  := Position_Third_Dot + 1;
    Length_of_Build_Number := Position_Trailing_Backslash - 
                              Start_of_Build_Number;

    if (Length_of_Build_Number < 1) then
    begin
      ShowMessage ('Build Number must be present.' + #13 + 
                   'Build Number not incremented.');
      Exit;
    end;

    Build_Number_In_ASCII := Copy (First_Line_Of_File, 
                                   Start_of_Build_Number, 
                                   Length_of_Build_Number);
    Success := TryStrToInt (Build_Number_In_ASCII, Build_Number_Numeric);
    if (not Success) then
    begin
      ShowMessage ('Build Number must be numeric integer.' + #13 + 
                   'Build Number not incremented.');
      Exit;
    end;

    Build_Number_Numeric := Build_Number_Numeric + 1;
    Build_Number_In_ASCII := IntToStr(Build_Number_Numeric);
    Resource_File_Contents.Strings[0] := Copy(First_Line_Of_File, 1, 
                                              Position_Third_Dot) +
                                              Build_Number_In_ASCII + 
                                              '\000"';
    Old_Resource_File_Name := Full_File_Name_And_Path;
    Old_Resource_File_Name := TPath.ChangeExtension(Old_Resource_File_Name, '~rc');

    if TFile.Exists(Old_Resource_File_Name, False) then
      TFile.Delete(Old_Resource_File_Name);

    Success := RenameFile(Full_File_Name_And_Path, Old_Resource_File_Name);
    if (not Success) then
    begin
      ShowMessage ('Error renaming old resource file to have extension "~rc".' + #13 + 
                  'Build Number not incremented.');
      Exit;
    end;

    Resource_File_Contents.SaveToFile(Full_File_Name_And_Path);
  finally
    Resource_File_Contents.Free;
  end;
end;

procedure TIncrementBuildNumber.FormActivate (Sender: TObject);
begin
  Close;
end;

end.

C) In Project Options of the project whose build number should be incremented:

• Remove the tick "include version info".

• Add a pre-build event with the following text, as written, including the two pairs of double-quotes, substituting the parts within < >:

"<full file name and path of the auto-increment program exe>" "<full file name and path of the .rc resource file>"

D) Add to the project source, right below the "program" keyword:

{$R '<whatever you called it>.res' '<whatever you called it>.rc'} // I think both names must

be the same here: IIRC, got errors when they were different.

E) Compile, run and enjoy the return of Auto-Increment build numbers, despite Embarcadero's having removed the facility.

End of Jim's content

You could use the pre-build event to, for instance, update the ProductName or FileDescription values, or any others that have to be different from the base script.