[fpc-pascal] Re: Fpc Access Violation if AppConfigDir doesn't exist.

[Michael Van Canneyt]

On Sat, 9 Feb 2013, Bart wrote:

> On 2/9/13, Michael Van Canneyt <michael at freepascal.org> wrote:
>
>> Like I said, we can imagine a parameter 'AllowCreate' or 'ForceCreate'.
>
> GetAppConfigDir(Global : Boolean: ForceCreate: Booelan = false) : String;
>
> While this can easily be implemented without breaking existing code,
> this still does not solve the original problem.
> If creating the directory fails, the function does not return an
> errorcode, unless we decide to let it raise an exception in this
> case..

Which is why I said 'we can imagine': 
I didn't investigate all angles yet...

>
> Common programming sense would be to query the desired location, and
> if it does not exists, try and create it,(for this the ForeceCreate
> parameter is usefull) __and check__ if this went OK.
>
> So, no matter how we change the GetAppConfigDir() function, it will
> always require code for checking if all went OK.

There is only one way:
if the ForceCreate is implemented and if creation fails, an exception 
will be raised.

In which case the
TIniFile.Create(...)
and so forth will not be executed, and probably many other things will 
go wrong as well....

Michael.