// See the License for the specific language governing permissions and
// limitations under the License.

package config

import (
	"fmt"
	"io"
	"sort"
	"text/tabwriter"

	"github.com/spf13/cobra"
	"github.com/spf13/viper"

	"istio.io/istio/istioctl/pkg/root"
	"istio.io/istio/pkg/config/constants"
	"istio.io/istio/pkg/env"
)

	dynOnly = true
	for scanner.Scan() {
		// Skip any empty lines, or comment like characters
		text := scanner.Text()
		if text == "" || strings.HasPrefix(text, KvComment) {
			continue
		}
		dynamic, err := c.SetKVS(text, DefaultKVS)
		if err != nil {
			return false, err
		}
		dynOnly = dynOnly && dynamic
		n += len(text)
	}
	if err := scanner.Err(); err != nil {
		return false, err
	}
	return dynOnly, nil