printf - Make fprintf to write to std::stringstream -


function fprintf writes file*. have debugprint function writes stringstream. don't want change function used @ many places , break code.

how can pass stringstream fprintf?

update : can wrap stringstream file , unwrap back?

you can't "pass" ostream fprintf. file structure platform dependent.

this not best way, can create evil macro:

#undef fprintf #define fprintf my_fprintf

and can create 2 my_fprintfs, 1 takes file*, , takes std::stringstream& argument.

you can avoid macro calling my_fprintf directly, have modify call site.

you can't "wrap stringstream in file*" portably, there system specific ways. if that's after, linux example has fopencookie() take function pointers read/write functions. create functions wrap std::stringstream.


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