"github.com/minio/minio/internal/bucket/lifecycle"
	"github.com/minio/minio/internal/event"
	"github.com/minio/minio/internal/hash"
	xhttp "github.com/minio/minio/internal/http"
)

var etagRegex = regexp.MustCompile("\"*?([^\"]*?)\"*?$")

// Validates the preconditions for CopyObjectPart, returns true if CopyObjectPart
// operation should not proceed. Preconditions supported are:
//
//	x-amz-copy-source-if-modified-since