Re: macro to print filename

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thanks very much! it works very well only except that the
initialization should be placed out of the struct. the compiling time
computation in c++ is really amazing.

2011/6/2 Michal Nazarewicz <mina86@xxxxxxxxxx>:
> On Wed, 01 Jun 2011 20:45:06 +0200, Zhongye Jia <jia.zhongye@xxxxxxxxx>
> 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 Âsome tips? Since I'm not that good at
>> c++ :)
>
> I was thinking along the lines of:
>
> template<unsigned offset>
> struct _filename {
> Â Â Â Âstatic const char *const val = __FILE__[offset] == '/'
> Â Â Â Â Â Â Â Â? __FILE__ + offset + 1
> Â Â Â Â Â Â Â Â: _filename<offset-1>::val;
> };
>
> template<>
> struct _filename<0> {
> Â Â Â Âstatic 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.
>
> --
> Best regards, Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â _ Â Â _
> .o. | Liege of Serenely Enlightened Majesty of   Âo' \,=./ `o
> ..o | Computer Science, ÂMichal "mina86" Nazarewicz  Â(o o)
> ooo +-----<email/xmpp: mnazarewicz@xxxxxxxxxx>-----ooO--(_)--Ooo--
>
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