ini file not writtable

[damos 0]

I am trying to write on ini file with Delphi Alexandria 11.3 on MacBook Pro ,everything is working except I can't write to ini, the read option is working fine

my ini file

[Server]
Server=192.168.1.103
Database=postgres
Schema=lis
Port=5432
IdleTime=90
Username=nikos
Baseurl=
DicomID=1
Upload=PgTools
Connection=

server:= Settings.ReadString('Server','Server','localhost');
Schema:= Settings.ReadString('Server','Schema','lis');
port:= Settings.ReadString('Server','port','5432');
database:=Settings.ReadString('Server','database','postgres');

all variables are reading Server section
but when i try
Settings.WriteString('Server','Username',Common.CurrentUser);
Settings.WriteString('Server','Connection',DateTimetostr(NOW));
Nothing is happen

i have give permissions read/write to the Pgtools,ini file

For example, this code is working TFile.WriteAllText(TPath.GetHomePath() + TPath.DirectorySeparatorChar + 'Sample.txt', 'Hi over there for current user ');

Any Idea

[David Heffernan 2303]

We don't know what Settings is. How about a minimal but complete example. 

[dummzeuch 1397]

How is Settings declared and how instantiated?

Some code would give us a lot more information to help you.

[damos 0]

Hi David

This is simple FMX Splash form (login form) before user start working with connected database (Postgres using Devart PgDac Components for Connection)

All the init connections strings are stored in Pgtools.ini file on directory programs is running , but when deploy on MacOS i change the path as you see my project

here is my code attached files , running on windows write settings is working.

On MacBook Pro the software is running OK , logging is successfully after reading Pgtools.ini file settings (Cannot write)

 

Splash.fmx

Splash.pas

[Hans J. Ellingsgaard 19]

Have you checked if the user has write rights on the folder where the inifile is placed?

[damos 0]

17 minutes ago, Hans J. Ellingsgaard said:

Have you checked if the user has write rights on the folder where the inifile is placed?

How to check is on Delphi Delphi deployment or on MacBook Pro

Why this is workig TFile.WriteAllText(TPath.GetHomePath() + TPath.DirectorySeparatorChar + 'Sample.txt', 'Hi over there for current user ');

on the same directory i see new file 'Sample.txt'

Edited May 13, 2023 by damos

[David Heffernan 2303]

Use a debugger, and look at what is in apath. 

 

Knowing how to use a debugger is a bit skill. 

[damos 0]

3 minutes ago, David Heffernan said:

Use a debugger, and look at what is in apath. 

 

Knowing how to use a debugger is a bit skill. 

Thank you David the problem was not the path i free the  Settings: TIniFile before a write to the sections

 

  if Settings<> nil then Settings.Free;

   Settings:= TIniFile.Create(apath);
   try
   Settings.WriteString('Server','Username',Common.CurrentUser);
   Settings.WriteString('Server','Connection',DateToISO8601(NOW));
    finally
  Settings.Free;
   end;
 

Now is working as you see

[dummzeuch 1397]

It is not be necessary to free Settings before creating it. That change cannot have solved your problem, it's something else that you also changed.

[damos 0]

5 minutes ago, dummzeuch said:

It is not be necessary to free Settings before creating it. That change cannot have solved your problem, it's something else that you also changed.

 here is the code without free

 

   server:= Settings.ReadString('Server','Server','localhost');
   Schema:= Settings.ReadString('Server','Schema','lis');
   port:= Settings.ReadString('Server','port','5432');
   database:=Settings.ReadString('Server','database','postgres');
   conectstr:=format(common.Connectstr,[server,database,Schema]) ;
  with dataform do
  Begin
  LisConnection.Port:=port.ToInteger;
  LisConnection.ConnectString:=conectstr;
  try
    LisConnection.Open;
    Mainform.ServerLb.Text:=format(rCommon.sUserConnection,[usernameedit.Text]);
    Mainform.ServerLb.FontColor:=  TAlphaColorRec.Green;
    Common.CurrentUser:=usernameedit.Text;
  //  if Settings<> nil then Settings.Free;
  //  Settings:= TIniFile.Create(apath);
//   try
   Settings.WriteString('Server','Username',Common.CurrentUser);
   Settings.WriteString('Server','Connection',DateToISO8601(NOW));
  //  finally
 // Settings.Free;
 //  end;
     Except
   On E:EXception do
   Mainform.ServerLb.Text:=E.Message;
  end;
  close;
  End;

and the results from ini file without freeing and with freeing Connection= CurrentDatetime

[David Heffernan 2303]

None of this is making much sense but whatever. 

 

More generally I strongly recommend you get out of the habit of using global variables. 

[dummzeuch 1397]

1 hour ago, damos said:

here is the code without free:

server:= Settings.ReadString('Server','Server','localhost');

   Schema:= Settings.ReadString('Server','Schema','lis');

OK, so where do you create and assign Settings in that code? That must be done before using it.

 

1 hour ago, damos said:

 

 

[programmerdelphi2k 235]

@damos

as you know, "Setting" will be used in all app, then a "Singleton" would can be used here...

unit uMySingletonSettings;

interface

uses
  System.SysUtils,
  System.Classes;

type
  // I_Your_Interface_If_Want_Use_Without_Free_Object_At_End = interface
  // ['{....}']
  // ... yor methods / getters/setters etc..
  // end;

  TMySettingsSingleton = class { (TInterfacedObject, I_Your_Interface_If_Want_Use_Without_Free_Object_At_End }
  private
    class { }
      var FInstance: TMySettingsSingleton;
    //
    // another vars/const/methods...
  strict private
    FSettings: TStringList;
    //
    constructor Create;
  public
    destructor Destroy; override;
    //
    class function GetInstance: TMySettingsSingleton;
    //
    property MySettings: TStringList read FSettings;
  end;

implementation

{ TMySettingsSingleton }

constructor TMySettingsSingleton.Create;
begin
  if (FSettings = nil) then
    FSettings := TStringList.Create;
end;

destructor TMySettingsSingleton.Destroy;
begin
  FreeAndNil(FSettings);
  //
  inherited;
end;

class function TMySettingsSingleton.GetInstance: TMySettingsSingleton;
begin
  if (FInstance = nil) then
    FInstance := TMySettingsSingleton.Create;
  //
  result := FInstance;
end;

end.

 

in your main unit or DPR just add this

...

initialization

ReportMemoryLeaksOnShutdown := true;
//
TMySettingsSingleton.GetInstance; // creating your StringList...
TMySettingsSingleton.GetInstance; // creating your StringList...  2ª call, dont will create a new StringList FSettings!

finalization

TMySettingsSingleton.GetInstance.Free;

end.

now, just use it as a StringList default usage: (dont need free all time, now! just before app END)

• TMySettingsSingleton.GetInstance.MySettings.SaveToFile('hello.ini');
• TMySettingsSingleton.GetInstance.MySettings.LoadFromFile('hello.ini');
  • TMySettingsSingleton.GetInstance.MySettings.Add('key1=value1'); 
  • TMySettingsSingleton.GetInstance.MySettings[0] := 'hello=world';
  • for var L in TMySettingsSingleton.GetInstance.MySettings do ... Memo1.Lines.Add( L );

Edited May 13, 2023 by programmerdelphi2k

[damos 0]

1 hour ago, dummzeuch said:

OK, so where do you create and assign Settings in that code? That must be done before using it.

 

 

here is my in Splah Unit

 

unit Splash;

interface

uses
  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs,Common,rCommon,
  FMX.Objects, FMX.Edit, FMX.Controls.Presentation, FMX.StdCtrls,Inifiles,System.IOUtils;

type
  TSplashform = class(TForm)
    SplashImage: TImage;
    Label1: TLabel;
    Label2: TLabel;
    lprogram2: TLabel;
    lprogram: TLabel;
    passwordedit: TEdit;
    usernameedit: TEdit;
    Backrect: TRectangle;
    procedure usernameeditKeyDown(Sender: TObject; var Key: Word;
      var KeyChar: Char; Shift: TShiftState);
    procedure passwordeditKeyDown(Sender: TObject; var Key: Word;
      var KeyChar: Char; Shift: TShiftState);
    procedure FormDestroy(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure FormShow(Sender: TObject);
  private
    server,Schema,port,database, conectstr,apath:string;
    Settings: TIniFile;

  public
    { Public declarations }
  end;

var
   Splashform: TSplashform;

implementation

{$R *.fmx}  uses mdata,fMain,System.DateUtils;

procedure TSplashform.FormCreate(Sender: TObject);

begin
//PgTools:=Tstringlist.Create;
 apath:= TPath.Combine(TPath.GetDirectoryName(ParamStr(0)), 'Pgtools.ini');
  {$IF Defined(MACOS) }
  apath:= StringReplace( apath,'MacOS','Resources/Startup',[rfReplaceAll, rfIgnoreCase]);
    {$ENDIF}

  Settings:= TIniFile.Create(apath);

end;

procedure TSplashform.FormDestroy(Sender: TObject);
begin
if Settings<> nil then Settings.Free;

end;

procedure TSplashform.FormShow(Sender: TObject);
begin
 lprogram.text:=rCommon.sLogoprogram+' current version '+common.OraCurrentVersion;
 usernameedit.Text:=Settings.ReadString('Server','Username','');

end;

procedure TSplashform.passwordeditKeyDown(Sender: TObject; var Key: Word;
  var KeyChar: Char; Shift: TShiftState);
//  var
//  s1,s2:string;
begin
if key=vkReturn then
 Begin
   server:= Settings.ReadString('Server','Server','localhost');
   Schema:= Settings.ReadString('Server','Schema','lis');
   port:= Settings.ReadString('Server','port','5432');
   database:=Settings.ReadString('Server','database','postgres');
   conectstr:=format(common.Connectstr,[server,database,Schema]) ;
  with dataform do
  Begin
  LisConnection.Port:=port.ToInteger;
  LisConnection.ConnectString:=conectstr;
  try
    LisConnection.Open;
    Mainform.ServerLb.Text:=format(rCommon.sUserConnection,[usernameedit.Text]);
    Mainform.ServerLb.FontColor:=  TAlphaColorRec.Green;
    Common.CurrentUser:=usernameedit.Text;
    if Settings<> nil then Settings.Free;
   Settings:= TIniFile.Create(apath);
  try
   Settings.WriteString('Server','Username',Common.CurrentUser);
   Settings.WriteString('Server','Connection',DateToISO8601(NOW));
    finally
  Settings.Free;
  end;
     Except
   On E:EXception do
   Mainform.ServerLb.Text:=E.Message;
  end;
  close;
  End;
 End;
end;

procedure TSplashform.usernameeditKeyDown(Sender: TObject; var Key: Word;
  var KeyChar: Char; Shift: TShiftState);
begin
 if Key = vkReturn then
  begin
  passwordedit.SetFocus
  end;
end;

end.

[programmerdelphi2k 235]

@damos

 

you need protect your "Settings" var, because it can be destroy in another place in your app for example, then trying "use/free it" can raise a exception! see my sample above and change it for your usage (with more methods etc... to ensure better use and protection of data)

[David Heffernan 2303]

24 minutes ago, damos said:

if Settings<> nil then Settings.Free

Replace thus with Settings.Free which internally performs that nil check 

[David Heffernan 2303]

22 minutes ago, programmerdelphi2k said:

@damos

 

you need protect your "Settings" var, because it can be destroy in another place in your app for example, then trying "use/free it" can raise a exception! see my sample above and change it for your usage (with more methods etc... to ensure better use and protection of data)

Not with the code most recently by the asker. 

 

That singleton code is enormously complex, obfuscates, and is certainly not helpful here. 

[damos 0]

Just now, David Heffernan said:

Not with the code most recently by the asker. 

 

That singleton code is enormously complex, obfuscates, and is certainly not helpful here. 

Ok Thank you

[programmerdelphi2k 235]

complexity is a scope of computation, then I think that yes, you can use it, for sure!

[softtouch 5]

@damos: Just create the .ini in the homepath, not inside the mac app bundle. I believe there is no write access, only read access.

[damos 0]

3 minutes ago, softtouch said:

@damos: Just create the .ini in the homepath, not inside the mac app bundle. I believe there is no write access, only read access.

Hi thank for answer the only way  working is read and write options are two different approaches , each time you have to free your TInifle var when you switch between read and write when using MacOS platform