// limitations under the License.

package analyze

import (
	"context"
	"fmt"
	"os"
	"path/filepath"
	"runtime"
	"sort"
	"strings"
	"time"

	"github.com/mattn/go-isatty"
	"github.com/spf13/cobra"
	"k8s.io/apimachinery/pkg/api/errors"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/client-go/tools/clientcmd"

	"istio.io/istio/istioctl/pkg/cli"

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

package formatting

import (
	"encoding/json"
	"fmt"
	"io"
	"os"
	"strings"

	"github.com/mattn/go-isatty"
	"sigs.k8s.io/yaml"

	"istio.io/istio/pkg/config/analysis/diag"
	"istio.io/istio/pkg/env"
)

// Formatting options for Messages
const (
	LogFormat  = "log"
	JSONFormat = "json"

// We avoid dependency on the unicode package, but check validity of the implementation
// in the tests.
func isSpace(r rune) bool {
	if r <= '\u00FF' {
		// Obvious ASCII ones: \t through \r plus space. Plus two Latin-1 oddballs.
		switch r {
		case ' ', '\t', '\n', '\v', '\f', '\r':
			return true
		case '\u0085', '\u00A0':
			return true
		}
		return false
	}
	// High-valued ones.

	expect = "a to zed"
	if string(m) != expect {
		t.Errorf("rot13: expected %q got %q", expect, m)
	}

	// 5. Drop
	dropNotLatin := func(r rune) rune {
		if unicode.Is(unicode.Latin, r) {
			return r
		}
		return -1
	}
	m = Map(dropNotLatin, []byte("Hello, 세계"))
	expect = "Hello"
	if string(m) != expect {
		t.Errorf("drop: expected %q got %q", expect, m)
	}