82 lines
1.9 KiB
Go
82 lines
1.9 KiB
Go
/*
|
|
Copyright The containerd 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 console
|
|
|
|
import (
|
|
"errors"
|
|
"io"
|
|
"os"
|
|
)
|
|
|
|
var ErrNotAConsole = errors.New("provided file is not a console")
|
|
|
|
type File interface {
|
|
io.ReadWriteCloser
|
|
|
|
// Fd returns its file descriptor
|
|
Fd() uintptr
|
|
// Name returns its file name
|
|
Name() string
|
|
}
|
|
|
|
type Console interface {
|
|
File
|
|
|
|
// Resize resizes the console to the provided window size
|
|
Resize(WinSize) error
|
|
// ResizeFrom resizes the calling console to the size of the
|
|
// provided console
|
|
ResizeFrom(Console) error
|
|
// SetRaw sets the console in raw mode
|
|
SetRaw() error
|
|
// DisableEcho disables echo on the console
|
|
DisableEcho() error
|
|
// Reset restores the console to its orignal state
|
|
Reset() error
|
|
// Size returns the window size of the console
|
|
Size() (WinSize, error)
|
|
}
|
|
|
|
// WinSize specifies the window size of the console
|
|
type WinSize struct {
|
|
// Height of the console
|
|
Height uint16
|
|
// Width of the console
|
|
Width uint16
|
|
x uint16
|
|
y uint16
|
|
}
|
|
|
|
// Current returns the current processes console
|
|
func Current() Console {
|
|
c, err := ConsoleFromFile(os.Stdin)
|
|
if err != nil {
|
|
// stdin should always be a console for the design
|
|
// of this function
|
|
panic(err)
|
|
}
|
|
return c
|
|
}
|
|
|
|
// ConsoleFromFile returns a console using the provided file
|
|
func ConsoleFromFile(f File) (Console, error) {
|
|
if err := checkConsole(f); err != nil {
|
|
return nil, err
|
|
}
|
|
return newMaster(f)
|
|
}
|