kubernetes term 源码
kubernetes term 代码
文件路径：/staging/src/k8s.io/component-base/term/term.go
/*
Copyright 2019 The Kubernetes 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 (
"fmt"
"io"
"github.com/moby/term"
)
// TerminalSize returns the current width and height of the user's terminal. If it isn't a terminal,
// nil is returned. On error, zero values are returned for width and height.
// Usually w must be the stdout of the process. Stderr won't work.
func TerminalSize(w io.Writer) (int, int, error) {
outFd, isTerminal := term.GetFdInfo(w)
if !isTerminal {
return 0, 0, fmt.Errorf("given writer is no terminal")
}
winsize, err := term.GetWinsize(outFd)
if err != nil {
return 0, 0, err
}
return int(winsize.Width), int(winsize.Height), nil
}
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