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moby--moby/pkg/term/term_windows.go
John Gossman 975b6e598d Refactor pkg/term package for Windows tty support
Signed-off-by: John Gossman <johngos@microsoft.com>
2014-11-14 18:20:53 -08:00

89 lines
2.2 KiB
Go

// +build windows
package term
type State struct {
mode uint32
}
type Winsize struct {
Height uint16
Width uint16
x uint16
y uint16
}
func GetWinsize(fd uintptr) (*Winsize, error) {
ws := &Winsize{}
var info *CONSOLE_SCREEN_BUFFER_INFO
info, err := GetConsoleScreenBufferInfo(fd)
if err != nil {
return nil, err
}
ws.Height = uint16(info.srWindow.Right - info.srWindow.Left + 1)
ws.Width = uint16(info.srWindow.Bottom - info.srWindow.Top + 1)
ws.x = 0 // todo azlinux -- this is the pixel size of the Window, and not currently used by any caller
ws.y = 0
return ws, nil
}
func SetWinsize(fd uintptr, ws *Winsize) error {
return nil
}
// IsTerminal returns true if the given file descriptor is a terminal.
func IsTerminal(fd uintptr) bool {
_, e := GetConsoleMode(fd)
return e == nil
}
// Restore restores the terminal connected to the given file descriptor to a
// previous state.
func RestoreTerminal(fd uintptr, state *State) error {
return SetConsoleMode(fd, state.mode)
}
func SaveState(fd uintptr) (*State, error) {
mode, e := GetConsoleMode(fd)
if e != nil {
return nil, e
}
return &State{mode}, nil
}
// see http://msdn.microsoft.com/en-us/library/windows/desktop/ms683462(v=vs.85).aspx for these flag settings
func DisableEcho(fd uintptr, state *State) error {
state.mode &^= (ENABLE_ECHO_INPUT)
state.mode |= (ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT)
return SetConsoleMode(fd, state.mode)
}
func SetRawTerminal(fd uintptr) (*State, error) {
oldState, err := MakeRaw(fd)
if err != nil {
return nil, err
}
// TODO (azlinux): implement handling interrupt and restore state of terminal
return oldState, err
}
// MakeRaw puts the terminal connected to the given file descriptor into raw
// mode and returns the previous state of the terminal so that it can be
// restored.
func MakeRaw(fd uintptr) (*State, error) {
var state *State
state, err := SaveState(fd)
if err != nil {
return nil, err
}
// see http://msdn.microsoft.com/en-us/library/windows/desktop/ms683462(v=vs.85).aspx for these flag settings
state.mode &^= (ENABLE_ECHO_INPUT | ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT)
err = SetConsoleMode(fd, state.mode)
if err != nil {
return nil, err
}
return state, nil
}