go-pwgen/cmd/pwgen/terminal.go

26 lines
385 B
Go

package main
import (
"syscall"
"unsafe"
)
type winsize struct {
Row uint16
Col uint16
Xpixel uint16
Ypixel uint16
}
func getWidth() uint {
ws := &winsize{}
retCode, _, errno := syscall.Syscall(syscall.SYS_IOCTL,
uintptr(syscall.Stdin),
uintptr(syscall.TIOCGWINSZ),
uintptr(unsafe.Pointer(ws)))
if int(retCode) == -1 {
panic(errno)
}
return uint(ws.Col)
}