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escapes_windows.go
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/
escapes_windows.go
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// +build windows
package escapes
import (
"syscall"
"golang.org/x/sys/windows"
)
// EnableVirtualTerminal enables virtual terminal escapes sequences for a
// console handle. It is only effective when built for Windows. On other OSes,
// it will simply return nil.
func EnableVirtualTerminal(fd uintptr) error {
var mode uint32
if err := syscall.GetConsoleMode(syscall.Handle(fd), &mode); err != nil {
return err
}
mode |= windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING
if err := windows.SetConsoleMode(windows.Handle(fd), mode); err != nil {
return err
}
return nil
}
// DisableVirtualTerminal disables virtual terminal escapes sequences for a
// console handle. It is only effective when built for Windows. On other OSes,
// it will simply return nil.
func DisableVirtualTerminal(fd uintptr) error {
var mode uint32
if err := syscall.GetConsoleMode(syscall.Handle(fd), &mode); err != nil {
return err
}
mode ^= windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING
if err := windows.SetConsoleMode(windows.Handle(fd), mode); err != nil {
return err
}
return nil
}
// GetConsoleSize gets the dimensions of the console.
func GetConsoleSize(fd uintptr) (*ConsoleDim, error) {
var info windows.ConsoleScreenBufferInfo
if err := windows.GetConsoleScreenBufferInfo(windows.Handle(fd), &info); err != nil {
return nil, err
}
// Return only the console dimensions
return &ConsoleDim{
Rows: int(info.Window.Bottom - info.Window.Top),
Cols: int(info.Window.Right - info.Window.Left),
}, nil
}