package pfile

import "bytes"

func IterateAllocated(
	pf *File,
	idx *Index,
	each func(collectionID, itemID uint64, data []byte) error,
) error {
	buf := &bytes.Buffer{}
	return idx.aList.Iterate(func(collectionID, itemID uint64, pages []uint64) error {
		buf.Reset()
		if err := pf.readData(pages[0], buf); err != nil {
			return err
		}
		return each(collectionID, itemID, buf.Bytes())
	})
}