[Lazarus] FPReport file names

[Michael Van Canneyt]

On Wed, 13 Sep 2017, Mattias Gaertner via Lazarus wrote:

> On Wed, 13 Sep 2017 10:44:23 +0200 (CEST)
> Michael Van Canneyt via Lazarus <lazarus at lists.lazarus-ide.org> wrote:
>
>> [...]
>> As long as there are no command-line switch and directive for setting 
>> namespaces, they are completely useless. And even with them, the benefit is
>> doubtful.
>> 
>> The benefit of writing fpreport.exporthtml versus fpreportexporthtml is zero.
>
> It's a little bit better than zero. For example shorter uses clause.

Without using a switch to set namespaces ? Please Explain ?


>> os.utils.pas(14)
>> testns.dpr(6) Error: E2003 Undeclared identifier: 'webfunction'
>> testns.dpr(7)
>> 
>> webfunction is in the web.utils.pas unit.
>
> Did you add "uses utils"?

Yes, obviously. Here is the test program:

program testns;

uses utils;

begin
   writeln(webfunction);
end.

unit web.utils;

interface

function webfunction : string;

implementation

function webfunction : string;

begin
   Result:='web';
end;

end.

unit os.utils;

interface

function osfunction : string;

implementation

function osfunction : string;

begin
   Result:='os';
end;

end.

> There is no switch to use "web.*" like in Java.

In Delphi there is: /NSweb.

But as soon as you use 2 namespaces (/NSos /NSWeb), you are stuck. 
As you see from the output I posted, it compiles first os.utils 
and uses that to satisfy the "uses utils;".

To be complete: it depends on the order of the NS switches, if you reverse 
the order, it will work - but that doesn't help if you have a big project 
which has many units using utils from one or the other namespace. 
The first one wins.

>> So, to disambiguate, that forces me to write
>> 
>> uses web.utils;
>
> "uses utils" should be enough.

As I demonstrated: it clearly is not.

I carefully tested everything before posting my remark.

Michael.