/*!
Flush remaining data.
Additional footer data for filters is added at the end.
Returns 0 on success.
*/
int FiltersChain::flush (size_t *nbw)
{
u_long written = 0;
char buffer[512];
list<Filter*>::iterator i;
*nbw = 0;
if (firstFilter != NULL)
{
if (firstFilter->flush (nbw))
return 1;
}
else if (stream)
{
if (stream->flush (nbw))
return 1;
}
written = *nbw;
;
/* Position on the last element. */
i = filters.end ();
while (i != filters.begin ())
{
Filter* f;
size_t tmpNbw = 0;
--i;
f = *i;
if (f->getFooter (buffer, 512, &tmpNbw))
return -1;
f->getParent ()->write (buffer, tmpNbw, nbw);
written += (*nbw);
}
/* Set the final value. */
*nbw = written;
return 0;
}
