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moby--moby/pkg/term/windows/console.go
Christopher Jones f30b072b81
[pkg/term] switch syscall to x/sys
Switches calls to syscall to x/sys, which is more up to date.
This is fixes a number of possible bugs on other architectures
where ioctl tcget and tcset aren't implemented correctly.

There are a few remaining syscall references, because x/sys doesn't
have an Errno implementation yet.

Also removes a ppc64le and cgo build tag that fixes building on
ppc64le without cgo

Signed-off-by: Christopher Jones <tophj@linux.vnet.ibm.com>
2017-05-15 18:34:41 -04:00

35 lines
787 B
Go

// +build windows
package windowsconsole
import (
"os"
"github.com/Azure/go-ansiterm/winterm"
)
// GetHandleInfo returns file descriptor and bool indicating whether the file is a console.
func GetHandleInfo(in interface{}) (uintptr, bool) {
switch t := in.(type) {
case *ansiReader:
return t.Fd(), true
case *ansiWriter:
return t.Fd(), true
}
var inFd uintptr
var isTerminal bool
if file, ok := in.(*os.File); ok {
inFd = file.Fd()
isTerminal = IsConsole(inFd)
}
return inFd, isTerminal
}
// IsConsole returns true if the given file descriptor is a Windows Console.
// The code assumes that GetConsoleMode will return an error for file descriptors that are not a console.
func IsConsole(fd uintptr) bool {
_, e := winterm.GetConsoleMode(fd)
return e == nil
}