i8 * csdbg::util::va_format ( const i8 *  fmt, va_list  args  )

static

Format a buffer with a printf-style string expanded with the values of a variable argument list.

Parameters

[in]	fmt	a printf-style format string
[in]	args	a variable argument list (as a va_list variable)

Returns

the formatted string (heap allocated)

Exceptions

std::bad_alloc
csdbg::exception

Definition at line 519 of file util.cpp.

References unlikely, and va_size().

Referenced by dbg(), csdbg::exception::exception(), csdbg::string::format(), and va_format().

{
  if ( unlikely(fmt == NULL) ) {
    va_end(args);
    throw exception("invalid argument: fmt (=%p)", fmt);
  }

  va_list cpargs;
  va_copy(cpargs, args);
  i8 *retval = NULL;

  try {
    i32 sz = va_size(fmt, cpargs);
    retval = new i8[sz + 1];

    i32 check = vsprintf(retval, fmt, args);
    if ( unlikely(check != sz) )
      throw exception("vsprintf failed with retval %d", check);

    va_end(args);
    return retval;
  }

  catch (...) {
    delete[] retval;
    va_end(args);
    throw;
  }
}

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