mirror of https://github.com/knative/client.git
47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
/*
|
|
Copyright 2024 The Knative Authors
|
|
|
|
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 term
|
|
|
|
import (
|
|
"io"
|
|
"os"
|
|
|
|
"golang.org/x/term"
|
|
"knative.dev/client/pkg/output/environment"
|
|
)
|
|
|
|
// IsReaderTerminal returns true if the given reader is a real terminal.
|
|
func IsReaderTerminal(r io.Reader) bool {
|
|
f, ok := r.(*os.File)
|
|
return ok && term.IsTerminal(int(f.Fd()))
|
|
}
|
|
|
|
// IsWriterTerminal returns true if the given writer is a real terminal.
|
|
func IsWriterTerminal(w io.Writer) bool {
|
|
f, ok := w.(*os.File)
|
|
return ok && term.IsTerminal(int(f.Fd()))
|
|
}
|
|
|
|
// IsFancy returns true if the given writer is a real terminal, or the color
|
|
// is forced by the environment variables.
|
|
func IsFancy(w io.Writer) bool {
|
|
if environment.ColorIsForced() {
|
|
return true
|
|
}
|
|
return !environment.NonColorRequested() && IsWriterTerminal(w)
|
|
}
|