DockerCLI/cli/command/out.go

51 lines
1.1 KiB
Go

package command
import (
"io"
"os"
"github.com/docker/docker/pkg/term"
"github.com/sirupsen/logrus"
)
// OutStream is an output stream used by the DockerCli to write normal program
// output.
type OutStream struct {
CommonStream
out io.Writer
}
func (o *OutStream) Write(p []byte) (int, error) {
return o.out.Write(p)
}
// SetRawTerminal sets raw mode on the input terminal
func (o *OutStream) SetRawTerminal() (err error) {
if os.Getenv("NORAW") != "" || !o.CommonStream.isTerminal {
return nil
}
o.CommonStream.state, err = term.SetRawTerminalOutput(o.CommonStream.fd)
return err
}
// GetTtySize returns the height and width in characters of the tty
func (o *OutStream) GetTtySize() (uint, uint) {
if !o.isTerminal {
return 0, 0
}
ws, err := term.GetWinsize(o.fd)
if err != nil {
logrus.Debugf("Error getting size: %s", err)
if ws == nil {
return 0, 0
}
}
return uint(ws.Height), uint(ws.Width)
}
// NewOutStream returns a new OutStream object from a Writer
func NewOutStream(out io.Writer) *OutStream {
fd, isTerminal := term.GetFdInfo(out)
return &OutStream{CommonStream: CommonStream{fd: fd, isTerminal: isTerminal}, out: out}
}