Re: macro to print filename

On Wed, 01 Jun 2011 20:45:06 +0200, Zhongye Jia <[email protected]>  
wrote:
> I do not think this can be done in *compiling* time, neither macro in
> c nor template in c++, so would you be so kind to offer the solution
> by using template or just give  some tips? Since I'm not that good at
> c++ :)

I was thinking along the lines of:

template<unsigned offset>
struct _filename {
	static const char *const val = __FILE__[offset] == '/'
		? __FILE__ + offset + 1
		: _filename<offset-1>::val;
};

template<>
struct _filename<0> {
	static const char *const val = __FILE__;
};

static const char *const filename = _filename<sizeof(__FILE__) - 1>;

I'm a bit rusty so I dunno if that'll work in this format.

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