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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)
}
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