DockerCLI/cli/streams/out.go

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package streams
import (
"io"
"os"
"github.com/docker/docker/pkg/term"
"github.com/sirupsen/logrus"
)
// Out is an output stream used by the DockerCli to write normal program
// output.
type Out struct {
commonStream
out io.Writer
}
func (o *Out) Write(p []byte) (int, error) {
return o.out.Write(p)
}
// SetRawTerminal sets raw mode on the input terminal
func (o *Out) 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 *Out) 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)
}
// NewOut returns a new Out object from a Writer
func NewOut(out io.Writer) *Out {
fd, isTerminal := term.GetFdInfo(out)
return &Out{commonStream: commonStream{fd: fd, isTerminal: isTerminal}, out: out}
}