• Freddy (27/27) Oct 08 2014 I recently thought of the idea of using string imports for
• Marco Leise (8/38) Oct 10 2014 I did something similar a while back. It parsed a .ini that
• Uranuz (3/7) Oct 11 2014 Yes. I use import('filename') to configure my application too. I

"Freddy" <Hexagonalstar64 gmail.com> writes:

I recently thought of the idea of using string imports for
compile time configuration.
Something like this
---
import std.stdio;
import std.conv;
import std.range;
import std.algorithm;

string getVar(string fname,string var)(){
	foreach(property;import(fname).splitter('\n')){
		auto varname=property[0..property.countUntil("=")];
		if(var==varname){
			return property[property.countUntil("=")+1..$];
		}
	}
	assert(0, "unable to find property");
}

enum dimisions=getVar!("shapes","dimisions").to!uint;

void main()
{
	writeln("There are ",dimisions," dimisions");
}
---
Where you add your config dir(that contains "shapes") file to
dub's  stringImportPaths".
How do you guys feel about this? Should we use something like
json for config files?

Marco Leise <Marco.Leise gmx.de> writes:

Am Wed, 08 Oct 2014 22:34:36 +0000
schrieb "Freddy" <Hexagonalstar64 gmail.com>:

 I recently thought of the idea of using string imports for
 compile time configuration.
 Something like this
 ---
 import std.stdio;
 import std.conv;
 import std.range;
 import std.algorithm;
 
 string getVar(string fname,string var)(){
 	foreach(property;import(fname).splitter('\n')){
 		auto varname=property[0..property.countUntil("=")];
 		if(var==varname){
 			return property[property.countUntil("=")+1..$];
 		}
 	}
 	assert(0, "unable to find property");
 }
 
 enum dimisions=getVar!("shapes","dimisions").to!uint;
 
 void main()
 {
 	writeln("There are ",dimisions," dimisions");
 }
 ---
 Where you add your config dir(that contains "shapes") file to
 dub's  stringImportPaths".
 How do you guys feel about this? Should we use something like
 json for config files?

I did something similar a while back. It parsed a .ini that
contained default values and created a statically typed runtime
parser for the actual .ini file from it. It was fun, to see
that you can do that with D.

-- 
Marco

"Uranuz" <neuranuz gmail.com> writes:

 I did something similar a while back. It parsed a .ini that
 contained default values and created a statically typed runtime
 parser for the actual .ini file from it. It was fun, to see
 that you can do that with D.

Yes. I use import('filename') to configure my application too. I 
have config.json, where I store standard application's file 
paths, options and so on. It's very handy compiler's feature