git: purgatorio

ref: 8a788aea84aad3bfbd5b39d78c1925654f3b9e14
dir: /libbio/bbuffered.c/

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#include	"lib9.h"
#include	<bio.h>

int
Bbuffered(Biobuf *bp)
{
	switch(bp->state) {
	case Bracteof:
	case Bractive:
		return -bp->icount;

	case Bwactive:
		return bp->bsize + bp->ocount;

	case Binactive:
		return 0;
	}
	fprint(2, "Bbuffered: unknown state %d\n", bp->state);
	return 0;
}