+++ /dev/null
-/*
- * CHOICE.C - internal command.
- *
- *
- * History:
- *
- * 12 Aug 1999 (Eric Kohl)
- * started.
- *
- * 01 Sep 1999 (Eric Kohl)
- * Fixed help text.
- *
- * 26 Sep 1999 (Paolo Pantaleo)
- * Fixed timeout.
- *
- * 02 Apr 2005 (Magnus Olsen)
- * Remove hardcoded strings so that they can be translated.
- *
- */
-
-#include "precomp.h"
-
-#ifdef INCLUDE_CMD_CHOICE
-
-
-#define GC_TIMEOUT -1
-#define GC_NOKEY 0 //an event occurred but it wasn't a key pressed
-#define GC_KEYREAD 1 //a key has been read
-
-
-static INT
-GetCharacterTimeout (LPTCH ch, DWORD dwMilliseconds)
-{
-//--------------------------------------------
-// Get a character from standard input but with a timeout.
-// The function will wait a limited amount
-// of time, then the function returns GC_TIMEOUT.
-//
-// dwMilliseconds is the timeout value, that can
-// be set to INFINITE, so the function works like
-// stdio.h's getchar()
-
- HANDLE hInput;
- DWORD dwRead;
-
- INPUT_RECORD lpBuffer;
-
- hInput = GetStdHandle (STD_INPUT_HANDLE);
-
- //if the timeout expired return GC_TIMEOUT
- if (WaitForSingleObject (hInput, dwMilliseconds) == WAIT_TIMEOUT)
- return GC_TIMEOUT;
-
- //otherwise get the event
- ReadConsoleInput (hInput, &lpBuffer, 1, &dwRead);
-
- //if the event is a key pressed
- if ((lpBuffer.EventType == KEY_EVENT) &&
- (lpBuffer.Event.KeyEvent.bKeyDown != FALSE))
- {
- //read the key
-#ifdef _UNICODE
- *ch = lpBuffer.Event.KeyEvent.uChar.UnicodeChar;
-#else
- *ch = lpBuffer.Event.KeyEvent.uChar.AsciiChar;
-#endif
- return GC_KEYREAD;
- }
-
- //else return no key
- return GC_NOKEY;
-}
-
-static INT
-IsKeyInString (LPTSTR lpString, TCHAR cKey, BOOL bCaseSensitive)
-{
- LPTCH p = lpString;
- INT val = 0;
-
- while (*p)
- {
- if (bCaseSensitive)
- {
- if (*p == cKey)
- return val;
- }
- else
- {
- if (_totlower (*p) == _totlower (cKey))
- return val;
- }
-
- val++;
- p++;
- }
-
- return -1;
-}
-
-
-INT
-CommandChoice (LPTSTR param)
-{
- LPTSTR lpOptions;
- TCHAR Options[6];
- LPTSTR lpText = NULL;
- BOOL bNoPrompt = FALSE;
- BOOL bCaseSensitive = FALSE;
- BOOL bTimeout = FALSE;
- INT nTimeout = 0;
- TCHAR cDefault = _T('\0');
- INPUT_RECORD ir;
- LPTSTR p, np;
- LPTSTR *arg;
- INT argc;
- INT i;
- INT val;
-
- INT GCret;
- TCHAR Ch;
- DWORD amount,clk;
-
- LoadString(CMD_ModuleHandle, STRING_CHOICE_OPTION, Options, 4);
- lpOptions = Options;
-
- if (_tcsncmp (param, _T("/?"), 2) == 0)
- {
- ConOutResPaging(TRUE,STRING_CHOICE_HELP);
- return 0;
- }
-
- /* retrieve text */
- p = param;
-
- while (TRUE)
- {
- if (*p == _T('\0'))
- break;
-
- if (*p != _T('/'))
- {
- lpText = p;
- break;
- }
- np = _tcschr (p, _T(' '));
- if (!np)
- break;
- p = np + 1;
- }
-
- /* build parameter array */
- arg = split (param, &argc, FALSE, FALSE);
-
- /* evaluate arguments */
- if (argc > 0)
- {
- for (i = 0; i < argc; i++)
- {
- if (_tcsnicmp (arg[i], _T("/c"), 2) == 0)
- {
- if (arg[i][2] == _T(':'))
- lpOptions = &arg[i][3];
- else
- lpOptions = &arg[i][2];
-
- if (_tcslen (lpOptions) == 0)
- {
- ConErrResPuts(STRING_CHOICE_ERROR);
- freep (arg);
- return 1;
- }
- }
- else if (_tcsnicmp (arg[i], _T("/n"), 2) == 0)
- {
- bNoPrompt = TRUE;
- }
- else if (_tcsnicmp (arg[i], _T("/s"), 2) == 0)
- {
- bCaseSensitive = TRUE;
- }
- else if (_tcsnicmp (arg[i], _T("/t"), 2) == 0)
- {
- LPTSTR s;
-
- if (arg[i][2] == _T(':'))
- {
- cDefault = arg[i][3];
- s = &arg[i][4];
- }
- else
- {
- cDefault = arg[i][2];
- s = &arg[i][3];
- }
-
- if (*s != _T(','))
- {
- ConErrResPuts(STRING_CHOICE_ERROR_TXT);
- freep (arg);
- return 1;
- }
-
- s++;
- nTimeout = _ttoi(s);
- bTimeout = TRUE;
- }
- else if (arg[i][0] == _T('/'))
- {
- ConErrResPrintf(STRING_CHOICE_ERROR_OPTION, arg[i]);
- freep (arg);
- return 1;
- }
- }
- }
-
- /* print text */
- if (lpText)
- ConOutPrintf (_T("%s"), lpText);
-
- /* print options */
- if (bNoPrompt == FALSE)
- {
- ConOutPrintf (_T("[%c"), lpOptions[0]);
-
- for (i = 1; (unsigned)i < _tcslen (lpOptions); i++)
- ConOutPrintf (_T(",%c"), lpOptions[i]);
-
- ConOutPrintf (_T("]?"));
- }
-
- ConInFlush ();
-
- if (!bTimeout)
- {
- while (TRUE)
- {
- ConInKey (&ir);
-
- val = IsKeyInString (lpOptions,
-#ifdef _UNICODE
- ir.Event.KeyEvent.uChar.UnicodeChar,
-#else
- ir.Event.KeyEvent.uChar.AsciiChar,
-#endif
- bCaseSensitive);
-
- if (val >= 0)
- {
- ConOutPrintf (_T("%c\n"), lpOptions[val]);
-
- nErrorLevel = val + 1;
-
- break;
- }
-
- Beep (440, 50);
- }
-
- freep (arg);
- TRACE ("ErrorLevel: %d\n", nErrorLevel);
- return 0;
- }
-
- clk = GetTickCount ();
- amount = nTimeout*1000;
-
-loop:
- GCret = GetCharacterTimeout (&Ch, amount - (GetTickCount () - clk));
-
- switch (GCret)
- {
- case GC_TIMEOUT:
- TRACE ("GC_TIMEOUT\n");
- TRACE ("elapsed %d msecs\n", GetTickCount () - clk);
- break;
-
- case GC_NOKEY:
- TRACE ("GC_NOKEY\n");
- TRACE ("elapsed %d msecs\n", GetTickCount () - clk);
- goto loop;
-
- case GC_KEYREAD:
- TRACE ("GC_KEYREAD\n");
- TRACE ("elapsed %d msecs\n", GetTickCount () - clk);
- TRACE ("read %c", Ch);
- if ((val=IsKeyInString(lpOptions,Ch,bCaseSensitive))==-1)
- {
- Beep (440, 50);
- goto loop;
- }
- cDefault=Ch;
- break;
- }
-
- TRACE ("exiting wait loop after %d msecs\n",
- GetTickCount () - clk);
-
- val = IsKeyInString (lpOptions, cDefault, bCaseSensitive);
- ConOutPrintf(_T("%c\n"), lpOptions[val]);
-
- nErrorLevel = val + 1;
-
- freep (arg);
-
- TRACE ("ErrorLevel: %d\n", nErrorLevel);
-
- return 0;
-}
-#endif /* INCLUDE_CMD_CHOICE */
-
-/* EOF */
projects / reactos.git / blobdiff