#pragma once

/**
 * helper class to determine all clusters whice are used.
 * starts at cluster number 2 and then iterates over all subsequent clusters
 */
class UsedSpaceChecker {

public:

	/** get the number of used clusters */
	static uint32_t getNumUsedClusters(const FS& fs) {

		uint32_t numUsed = 0;

		for (ClusterNr nr = 2; nr < fs.tmp.entriesPerFAT; ++nr) {
			ClusterNr next = fs.getNextCluster(nr);
			if (!next.isFree()) {++numUsed;}
		}

		return numUsed;

	}

};