/*~f char* w_cstr_formatv (const char *format, va_list arguments)
*
* Create a C (``\0``-terminated) string with a given `format`, consuming
* additional `arguments` as needed by the `format`.
*
* The returned strings must be freed by the caller.
*
* See :ref:`formatted-output` for the available formatting options.
*/
char*
w_cstr_formatv (const char *format, va_list args)
{
w_assert (format);
w_io_buf_t buffer_stream;
w_io_buf_init (&buffer_stream, NULL, false);
W_IO_NORESULT (w_io_formatv (&buffer_stream.parent, format, args));
return w_io_buf_str (&buffer_stream);
}
/*~f w_io_result_t w_io_format (w_io_t *stream, const char *format, ...)
*
* Writes data with a given `format` to an output `stream`.
* The amount of consumed arguments depends on the `format` string.
*
* See :ref:`formatted-output` for more information.
*/
w_io_result_t
w_io_format (w_io_t *io, const char *fmt, ...)
{
w_assert (io);
w_assert (fmt);
va_list args;
va_start (args, fmt);
w_io_result_t r = w_io_formatv (io, fmt, args);
va_end (args);
return r;
}
static inline void
_write_status (const char *fmt, ...)
{
w_assert (status_io);
va_list arg;
va_start (arg, fmt);
w_io_result_t r = w_io_formatv (status_io, fmt, arg);
va_end (arg);
if (w_io_failed (r))
W_WARN ("I/O error writing to status file: $E\n");
}
