32 lines
731 B
Go
32 lines
731 B
Go
package terminal
|
|
|
|
import (
|
|
"syscall"
|
|
"unsafe"
|
|
)
|
|
|
|
func EraseLine(out FileWriter, mode EraseLineMode) error {
|
|
handle := syscall.Handle(out.Fd())
|
|
|
|
var csbi consoleScreenBufferInfo
|
|
if _, _, err := procGetConsoleScreenBufferInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&csbi))); normalizeError(err) != nil {
|
|
return err
|
|
}
|
|
|
|
var w uint32
|
|
var x Short
|
|
cursor := csbi.cursorPosition
|
|
switch mode {
|
|
case ERASE_LINE_END:
|
|
x = csbi.size.X
|
|
case ERASE_LINE_START:
|
|
x = 0
|
|
case ERASE_LINE_ALL:
|
|
cursor.X = 0
|
|
x = csbi.size.X
|
|
}
|
|
|
|
_, _, err := procFillConsoleOutputCharacter.Call(uintptr(handle), uintptr(' '), uintptr(x), uintptr(*(*int32)(unsafe.Pointer(&cursor))), uintptr(unsafe.Pointer(&w)))
|
|
return normalizeError(err)
|
|
}
|