i8 * csdbg::util::va_format ( i8 *  dst, 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

[out]	dst	the buffer to be formatted. Use util::va_size to compute the suitable buffer size to avoid memory overflows. If NULL a proper buffer is allocated
[in]	fmt	a printf-style format string
[in]	args	a variable argument list (as a va_list variable)

Returns

the formatted string

Exceptions

std::bad_alloc
csdbg::exception

Definition at line 568 of file util.cpp.

References unlikely, and va_format().

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

  if ( unlikely(dst == NULL) )
    return va_format(fmt, args);

  i32 sz = vsprintf(dst, fmt, args);
  va_end(args);
  if ( unlikely(sz < 0) )
    throw exception("vsprintf failed with retval %d", sz);

  return dst;
}

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