va_list version of logging functions

[laphone32]

Hi,

It would be great if there is va_list version of logging functions/macros be released for customized package, something like:

ZF_VLOGI(valist)

would be help when we have our own logging function:

void info(/*blah blah*/ const char *fmt, ...) { va_list vl; va_start(vl, fmt); /* blah blah */ ZF_VLOGI(fmt, vl); va_close(); }

Of course ZF_LOGI_STR() with an extra snprint() could do the same, but one more snprintf costs. Thanks!

[wonder-mice]

Hi,

But doing that doesn't make much sense, since it will render many zf_log features useless. For example, in debug, each line will contain source location info@your_logging.c:56, since ZF_LOG*() always will be called from this function. And no zero-cost no-op logging in release either, because this info() function will not be no-op. Also per-module log level and tag control macros will be broken, because from this perspective there will be only one module - your_logging.c. I would recommend doing something like that instead:

#define info(...) ZF_VLOGI(__VA_ARGS__)

So, wrapping ZF_LOG*() invocations into a function is not very useful. If I missing something, please describe what you are trying to accomplish in more details.

[laphone32]

Hi,

I could understand that wil lost the power of macro, and so the profit from preprocessor. Thus the only way to wrap the log functions would be macro wrapping.

Thanks!