329 lines
7.2 KiB
C
329 lines
7.2 KiB
C
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/*++
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Copyright (c) 1997 Microsoft Corporation
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Module Name:
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input.c
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Author:
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Ken Reneris Oct-2-1997
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Abstract:
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--*/
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#if defined (_IA64_)
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#include "bootia64.h"
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#endif
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#if defined (_X86_)
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#include "bldrx86.h"
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#endif
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#include "displayp.h"
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#include "stdio.h"
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#include "efi.h"
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#include "efip.h"
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#include "flop.h"
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#include "bootefi.h"
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//
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// Externals
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//
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extern BOOT_CONTEXT BootContext;
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extern EFI_HANDLE EfiImageHandle;
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extern EFI_SYSTEM_TABLE *EfiST;
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extern EFI_BOOT_SERVICES *EfiBS;
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extern EFI_RUNTIME_SERVICES *EfiRS;
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extern EFI_GUID EfiDevicePathProtocol;
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extern EFI_GUID EfiBlockIoProtocol;
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//
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// Takes any pending input and converts it into a KEY value. Non-blocking, returning 0 if no input available.
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//
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ULONG
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BlGetKey()
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{
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ULONG Key = 0;
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UCHAR Ch;
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ULONG Count;
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if (ArcGetReadStatus(BlConsoleInDeviceId) == ESUCCESS) {
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ArcRead(BlConsoleInDeviceId, &Ch, sizeof(Ch), &Count);
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if (Ch == ASCI_CSI_IN) {
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if (ArcGetReadStatus(BlConsoleInDeviceId) == ESUCCESS) {
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ArcRead(BlConsoleInDeviceId, &Ch, sizeof(Ch), &Count);
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//
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// All the function keys start with ESC-O
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//
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switch (Ch) {
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case 'O':
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ArcRead(BlConsoleInDeviceId, &Ch, sizeof(Ch), &Count); // will not or block, as the buffer is already filled
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switch (Ch) {
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case 'P':
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Key = F1_KEY;
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break;
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case 'Q':
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Key = F2_KEY;
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break;
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case 'w':
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Key = F3_KEY;
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break;
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case 't':
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Key = F5_KEY;
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break;
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case 'u':
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Key = F6_KEY;
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break;
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case 'r':
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Key = F8_KEY;
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break;
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case 'M':
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Key = F10_KEY;
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break;
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}
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break;
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case 'A':
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Key = UP_ARROW;
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break;
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case 'B':
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Key = DOWN_ARROW;
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break;
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case 'C':
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Key = RIGHT_KEY;
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break;
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case 'D':
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Key = LEFT_KEY;
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break;
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case 'H':
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Key = HOME_KEY;
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break;
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case 'K':
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Key = END_KEY;
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break;
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case '@':
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Key = INS_KEY;
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break;
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case 'P':
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Key = DEL_KEY;
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break;
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case TAB_KEY:
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Key = BACKTAB_KEY;
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break;
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}
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} else { // Single escape key, as no input is waiting.
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Key = ESCAPE_KEY;
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}
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} else if (Ch == 0x8) {
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Key = BKSP_KEY;
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} else {
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Key = (ULONG)Ch;
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}
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}
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return Key;
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}
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VOID
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BlInputString(
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IN ULONG Prompt,
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IN ULONG CursorX,
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IN ULONG PosY,
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IN PUCHAR String,
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IN ULONG MaxLength
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)
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{
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PTCHAR PromptString;
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ULONG TextX, TextY;
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ULONG Length, Index;
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_TUCHAR CursorChar[2];
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ULONG Key;
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_PTUCHAR p;
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ULONG i;
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ULONG Count;
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_PTUCHAR pString;
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#ifdef UNICODE
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WCHAR StringW[200];
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UNICODE_STRING uString;
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ANSI_STRING aString;
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pString = StringW;
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uString.Buffer = StringW;
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uString.MaximumLength = sizeof(StringW);
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RtlInitAnsiString(&aString, String );
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RtlAnsiStringToUnicodeString( &uString, &aString, FALSE );
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#else
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pString = String;
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#endif
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PromptString = BlFindMessage(Prompt);
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Length = strlen(String);
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CursorChar[1] = TEXT('\0');
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//
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// Print prompt
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//
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BlEfiPositionCursor( PosY, CursorX );
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BlEfiEnableCursor( TRUE );
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ArcWrite(BlConsoleOutDeviceId, PromptString, _tcslen(PromptString)*sizeof(TCHAR), &Count);
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//
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// Indent cursor to right of prompt
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//
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CursorX += _tcslen(PromptString);
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TextX = CursorX;
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Key = 0;
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for (; ;) {
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TextY = TextX + Length;
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if (CursorX > TextY) {
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CursorX = TextY;
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}
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if (CursorX < TextX) {
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CursorX = TextX;
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}
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Index = CursorX - TextX;
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pString[Length] = 0;
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//
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// Display current string
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//
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BlEfiPositionCursor( TextY, TextX );
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ArcWrite(
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BlConsoleOutDeviceId,
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pString,
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_tcslen(pString)*sizeof(TCHAR),
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&Count);
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ArcWrite(BlConsoleOutDeviceId, TEXT(" "), sizeof(TEXT(" ")), &Count);
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if (Key == 0x0d) { // enter key?
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break ;
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}
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//
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// Display cursor
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//
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BlEfiPositionCursor( PosY, CursorX );
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BlEfiSetInverseMode( TRUE );
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CursorChar[0] = pString[Index] ? pString[Index] : TEXT(' ');
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ArcWrite(BlConsoleOutDeviceId, CursorChar, sizeof(_TUCHAR), &Count);
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BlEfiSetInverseMode( FALSE );
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BlEfiPositionCursor( PosY, CursorX );
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BlEfiEnableCursor(TRUE);
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//
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// Get key and process it
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//
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while (!(Key = BlGetKey())) ;
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switch (Key) {
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case HOME_KEY:
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CursorX = TextX;
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break;
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case END_KEY:
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CursorX = TextY;
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break;
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case LEFT_KEY:
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CursorX -= 1;
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break;
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case RIGHT_KEY:
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CursorX += 1;
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break;
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case BKSP_KEY:
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if (!Index) {
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break;
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}
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CursorX -= 1;
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pString[Index-1] = CursorChar[0];
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// fallthough to DEL_KEY
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case DEL_KEY:
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if (Length) {
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p = pString+Index;
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i = Length-Index+1;
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while (i) {
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p[0] = p[1];
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p += 1;
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i -= 1;
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}
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Length -= 1;
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}
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break;
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case INS_KEY:
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if (Length < MaxLength) {
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p = pString+Length;
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i = Length-Index+1;
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while (i) {
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p[1] = p[0];
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p -= 1;
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i -= 1;
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}
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pString[Index] = TEXT(' ');
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Length += 1;
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}
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break;
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default:
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Key = Key & 0xff;
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if (Key >= ' ' && Key <= 'z') {
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if (CursorX == TextY && Length < MaxLength) {
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Length += 1;
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}
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pString[Index] = (_TUCHAR)Key;
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pString[MaxLength] = 0;
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CursorX += 1;
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}
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break;
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}
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}
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}
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