kubectx/internal/printer/color.go
Ahmet Alp Balkan 1e49c336fc
Add license headers for 2021
Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>
2020-12-29 13:38:42 -08:00

55 lines
1.4 KiB
Go

// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package printer
import (
"os"
"github.com/fatih/color"
"github.com/ahmetb/kubectx/internal/env"
)
var (
ActiveItemColor = color.New(color.FgGreen, color.Bold)
)
func init() {
EnableOrDisableColor(ActiveItemColor)
}
// useColors returns true if colors are force-enabled,
// false if colors are disabled, or nil for default behavior
// which is determined based on factors like if stdout is tty.
func useColors() *bool {
tr, fa := true, false
if os.Getenv(env.EnvForceColor) != "" {
return &tr
} else if os.Getenv(env.EnvNoColor) != "" {
return &fa
}
return nil
}
// EnableOrDisableColor determines if color should be force-enabled or force-disabled
// or left untouched based on environment configuration.
func EnableOrDisableColor(c *color.Color) {
if v := useColors(); v != nil && *v {
c.EnableColor()
} else if v != nil && !*v {
c.DisableColor()
}
}