Hi All,

  Request you help on the below code, the below code always state the file does not exist even if the file do exist.

Code:

import core.stdc.stdlib: exit;
import std.stdio;
import std.file;
import std.path;

auto osSwitch () {
string ConfigFile;
version (Windows) { ConfigFile = absolutePath(`.\nasconfig.txt`); } else version (Linux) { ConfigFile = absolutePath(`nasconfig.txt`); }
return ConfigFile;
}
void main () {
auto ConfigFile = osSwitch;
if (!ConfigFile.exists) { writeln("The Configuration File ", buildNormalizedPath(ConfigFile), " do to exist, Terminating the execution.."); exit(-1);}
else { writeln(ConfigFile); }
}

From,
Vino.B

On Fri, 2018-05-04 at 03:30 +0000, Vino via Digitalmars-d-learn wrote:
> Hi All,
> 
>    Request you help on the below code, the below code always state
> the file does not exist even if the file do exist.
> 
> Code:
> 
> import core.stdc.stdlib: exit;
> import std.stdio;
> import std.file;
> import std.path;
> 
> auto osSwitch () {
> string ConfigFile;
> version (Windows) { ConfigFile = absolutePath(`.\nasconfig.txt`);

`./nasconfig.txt`

perhaps: Linux uses / (as does Windows in fact) for directory separator.

> } else version (Linux) { ConfigFile =
> absolutePath(`nasconfig.txt`); }
> return ConfigFile;
> }
> void main () {
> auto ConfigFile = osSwitch;
> if (!ConfigFile.exists) { writeln("The Configuration File ",
> buildNormalizedPath(ConfigFile), " do to exist, Terminating the
> execution.."); exit(-1);}
> else { writeln(ConfigFile); }
> }
> 
> From,
> Vino.B
> 
-- 
Russel.
==========================================
Dr Russel Winder      t: +44 20 7585 2200
41 Buckmaster Road    m: +44 7770 465 077
London SW11 1EN, UK   w: www.russel.org.uk

On Friday, 4 May 2018 at 07:43:39 UTC, Russel Winder wrote:
> On Fri, 2018-05-04 at 03:30 +0000, Vino via Digitalmars-d-learn wrote:
>> [...]
>
> `./nasconfig.txt`
>
> perhaps: Linux uses / (as does Windows in fact) for directory separator.
>
>> [...]

Hi Russel,

 Was able to resolve the issue, the issue was the letter "L" in version (Linux) where is should be version (linux).


From,
Vino.B

On Fri, 2018-05-04 at 08:47 +0000, Vino via Digitalmars-d-learn wrote:
> 
[…]
>   Was able to resolve the issue, the issue was the letter "L" in
> version (Linux) where is should be version (linux).

It would have helped if I had read the code first rather than jumped to a conclusion.

:-)



-- 
Russel.
==========================================
Dr Russel Winder      t: +44 20 7585 2200
41 Buckmaster Road    m: +44 7770 465 077
London SW11 1EN, UK   w: www.russel.org.uk

On Friday, 4 May 2018 at 09:25:28 UTC, Russel Winder wrote:
> On Fri, 2018-05-04 at 08:47 +0000, Vino via Digitalmars-d-learn wrote:
>> 
> […]
>>   Was able to resolve the issue, the issue was the letter "L" in
>> version (Linux) where is should be version (linux).
>
> It would have helped if I had read the code first rather than jumped to a conclusion.
>
> :-)

Hi Russel,
 No issue, and thank you for your help.

From,
Vino.B

On Friday, May 04, 2018 10:25:28 Russel Winder via Digitalmars-d-learn wrote:
> On Fri, 2018-05-04 at 08:47 +0000, Vino via Digitalmars-d-learn wrote:
>
> […]
>
> >   Was able to resolve the issue, the issue was the letter "L" in
> >
> > version (Linux) where is should be version (linux).
>
> It would have helped if I had read the code first rather than jumped to a conclusion.
>
> :-)

It happens to us all from time to time, and the casing of the version identifiers can be easy to screw up and easy to miss the mistakes - especially since many of them are based on the names that get used with #ifdef in C/C++ rather than having consistent casing across the various version identifiers.

- Jonathan M Davis