//     and the running quota doesn't change.  If it did fit, check to see if any quota was changed.  If there was no quota change
//     mark the waiter as succeeded.  If some quota did change, update the running quotas
//  2. If no running quota was changed, return now since no updates are needed.

	// never have been one, and we have no way to know otherwise
	klog.V(3).Infof("clearQuotaOnDir fails %v", err)
	return nil
}

// SupportsQuotas -- Does the path support quotas
// Cache the applier for paths that support quotas.  For paths that don't,
// don't cache the result because nothing will clean it up.
// However, do cache the device->applier map; the number of devices
// is bounded.

				// We are only interested in observing updates to quota.spec to drive updates to quota.status.
				// We ignore all updates to quota.Status because they are all driven by this controller.
				// IMPORTANT:
				// We do not use this function to queue up a full quota recalculation.  To do so, would require
				// us to enqueue all quota.Status updates, and since quota.Status updates involve additional queries

}

const (
	projectsHeader = `# This is a /etc/projects header
1048578:/quota/d
`
	projects1 = `1048577:/quota1/a
`
	projects2 = `1048577:/quota1/a
1048580:/quota1/b
`
	projects3 = `1048577:/quota1/a
1048580:/quota1/b
1048581:/quota2/b
`
	projects4 = `1048577:/quota1/a
1048581:/quota2/b
`
	projects5 = `1048581:/quota2/b
`

	projidHeader = `# This is a /etc/projid header
xxxxxx:1048579

		if err != nil {
			klog.V(3).Infof("Unable to check for quota support on %s: %s", dir, err.Error())
		} else if hasQuotas {
			klog.V(4).Infof("emptydir trying to assign quota %v on %s", mounterSize, dir)
			if err := fsquota.AssignQuota(ed.mounter, dir, ed.pod.UID, mounterSize); err != nil {
				klog.V(3).Infof("Set quota on %s failed %s", dir, err.Error())
				return err
			}
			return nil
		}
	}

	"k8s.io/apimachinery/pkg/runtime/schema"
	utilerrors "k8s.io/apimachinery/pkg/util/errors"
	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
	"k8s.io/apimachinery/pkg/util/wait"
	quota "k8s.io/apiserver/pkg/quota/v1"
	"k8s.io/apiserver/pkg/quota/v1/generic"
	"k8s.io/client-go/tools/cache"
	"k8s.io/client-go/util/workqueue"
	"k8s.io/controller-manager/pkg/informerfactory"
	"k8s.io/kubernetes/pkg/controller"
)

type eventType int

	"k8s.io/apimachinery/pkg/labels"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/apimachinery/pkg/util/sets"
	"k8s.io/apiserver/pkg/admission"
	quota "k8s.io/apiserver/pkg/quota/v1"
	"k8s.io/apiserver/pkg/quota/v1/generic"
	"k8s.io/apiserver/pkg/util/feature"
	"k8s.io/utils/clock"

	resourcehelper "k8s.io/kubernetes/pkg/api/v1/resource"
	api "k8s.io/kubernetes/pkg/apis/core"

	}
	quote := in[0]
	end := index(in[1:], quote)
	if end < 0 {
		return "", in, ErrSyntax
	}
	end += 2 // position after terminating quote; may be wrong if escape sequences are present

	switch quote {
	case '`':
		switch {
		case !unescape:
			out = in[:end] // include quotes
		case !contains(in[:end], '\r'):
			out = in[len("`") : end-len("`")] // exclude quotes
		default:

}

// findAvailableQuota finds the next available quota from the FirstQuota
// it returns error if QuotaIDIsInUse returns error when getting quota id in use;
// it searches at most maxUnusedQuotasToSearch(128) time
func findAvailableQuota(path string, idMap map[common.QuotaID]bool) (common.QuotaID, error) {
	unusedQuotasSearched := 0
	for id := common.FirstQuota; true; id++ {

	escaped := false
	quoted := false
	quote := '\x00'
	i := 0
	for _, rune := range s {
		switch {
		case escaped:
			escaped = false
		case rune == '\\':
			escaped = true
			continue
		case quote != '\x00':
			if rune == quote {
				quote = '\x00'
				continue
			}
		case rune == '"' || rune == '\'':
			quoted = true
			quote = rune
			continue