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/*++
Copyright (c) 1998 Intel Corporation
Module Name:
console.c
Abstract:
Revision History
--*/
#include "lib.h"
VOID
Output (
IN CHAR16 *Str
)
// Write a string to the console at the current cursor location
{
uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, Str);
}
VOID
Input (
IN CHAR16 *Prompt OPTIONAL,
OUT CHAR16 *InStr,
IN UINTN StrLen
)
// Input a string at the current cursor location, for StrLen
{
IInput (
ST->ConOut,
ST->ConIn,
Prompt,
InStr,
StrLen
);
}
VOID
IInput (
IN SIMPLE_TEXT_OUTPUT_INTERFACE *ConOut,
IN SIMPLE_INPUT_INTERFACE *ConIn,
IN CHAR16 *Prompt OPTIONAL,
OUT CHAR16 *InStr,
IN UINTN StrLen
)
// Input a string at the current cursor location, for StrLen
{
EFI_INPUT_KEY Key;
EFI_STATUS Status;
UINTN Len;
if (Prompt) {
ConOut->OutputString (ConOut, Prompt);
}
Len = 0;
for (; ;) {
WaitForSingleEvent (ConIn->WaitForKey, 0);
Status = uefi_call_wrapper(ConIn->ReadKeyStroke, 2, ConIn, &Key);
if (EFI_ERROR(Status)) {
DEBUG((D_ERROR, "Input: error return from ReadKey %x\n", Status));
break;
}
if (Key.UnicodeChar == '\n' ||
Key.UnicodeChar == '\r') {
break;
}
if (Key.UnicodeChar == '\b') {
if (Len) {
uefi_call_wrapper(ConOut->OutputString, 2, ConOut, L"\b \b");
Len -= 1;
}
continue;
}
if (Key.UnicodeChar >= ' ') {
if (Len < StrLen-1) {
InStr[Len] = Key.UnicodeChar;
InStr[Len+1] = 0;
uefi_call_wrapper(ConOut->OutputString, 2, ConOut, &InStr[Len]);
Len += 1;
}
continue;
}
}
InStr[Len] = 0;
}
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