full path to source file __FILE__

Jonathan Marler via Digitalmars-d-learn digitalmars-d-learn at puremagic.com
Fri Jul 22 00:47:14 PDT 2016


On Friday, 22 July 2016 at 05:41:00 UTC, fdgdsgf wrote:
> On Thursday, 21 July 2016 at 19:54:34 UTC, Jonathan Marler 
> wrote:
>> Is there a way to get the full path of the current source 
>> file? Something like:
>>
>> __FILE_FULL_PATH__
>>
>> I'm asking because I'm rewriting a batch script in D, meant to 
>> be ran with rdmd.  However, the script needs to know it's own 
>> path.  The original batch script uses the %~dp0 variable for 
>> this, but I'm at a loss on how to do this in D.  Since rdmd 
>> compiles the executable to the %TEMP% directory, thisExePath 
>> won't work.
>>
>> BATCH
>> -----
>> echo "Directory of this script is " %~dp0
>>
>>
>> DLANG
>> -----
>> import std.stdio;
>> int main(string[] args) {
>>     writeln("Directory of this script is ", ???);
>> }
>
> What's wrong with __FILE__.dirName ?

It's kinda weird, sometimes I've noticed that the __FILE__ 
keyword is an absolute path, and sometimes it isn't.  If it was 
always an absolute path, that would work.  I decided to take a 
stab at implementing this in the dmd compiler:

https://github.com/dlang/dmd/pull/5959

It adds a __FILE_FULL_PATH__ trait which would solve the issue.


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