Path: utzoo!attcan!uunet!know!zaphod.mps.ohio-state.edu!usc!srhqla!demott!kdq
From: kdq@demott.COM (Kevin D. Quitt)
Newsgroups: comp.os.msdos.programmer
Subject: Re: Autoexec.bat prob: take two
Message-ID: <744@demott.COM>
Date: 10 Oct 90 16:36:18 GMT
References: <3936.27135c52@cc.curtin.edu.au>
Reply-To: kdq@demott.COM (Kevin D. Quitt)
Organization: DeMott Electronics Co., Van Nuys CA
Lines: 107

In article <3936.27135c52@cc.curtin.edu.au> Thomson_PW@cc.curtin.edu.au writes:
>I saw once a programme which was called from the autoexec.bat file 
>which loaded for a few seconds then finished and let the batch file
>continue on. This was to give the user time enough to do a <ctrl> c
>to stop the batch file.

    I have a program called getyesno which will accept a prompt and a
timeout on its command line, then wait the specified amount of time for
a y/n response.  The result is in the errorlevel variable.  Aw, heck with it,
it's under 2K.

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/*  GETYESNO.C  30-Nov-87   Kevin D. Quitt

    Gets a Yes or No answer from the operator, with a command-line
    specified time-out. A timeout of zero waits forever. If yes is entered,
    errorlevel is 1, no yields 0, a timeout yields 2.

13-Jul-88 10:48:10, [VTEK]c:\utils\source\getyesno.c, Edit 880713104810 by KDQ
    Added one-time output of string parameters past the timeout value.
*/

#include    "disk.h"
#include    <stdio.h>
#include    <conio.h>
#include    <time.h>

#define TRUE    (1==1)
#define FALSE   (1!=1)

int main( int argc, char *argv[] )
   {
    int      c, secs = 0, gotanswer = FALSE, response;
    long     elapsed = -1L, stime;

    if ( argv[1][0] == '?' )
       {
        printf( "Format is:\ngetyesno [optional maximum wait]\n" );
        return -1;
       }

    if  ( --argc  >  0 )
        sscanf( argv[1], "%d", &secs );

    c   = 2;
    while ( argv[ c ] )                 /* Print the extra text             */
        printf( "%s ", argv[ c++ ] );

    while (!gotanswer)
       {
        gotanswer   = TRUE;
        response    = 'y';              /* and the answer is yes    */

        if ( secs == 0 )
            response    = getche();
        else
           {
            stime   = time( NULL );
            elapsed = 0;
            while ( elapsed < secs )
               {
                if (kbhit())
                   {
                    response    = getche();
                    break;
                   }
                else
                   {
                    if ( stime != time(NULL) )
                       {
                        elapsed++;
                        stime       = time(NULL);
                       }
                   }
               }
           }

        response |= ( 'a' ^ 'A' );      /* Fold down    */

        if ( (response != 'y') && (response != 'n' ) )
           {
            gotanswer   = FALSE;
            printf( "\nPlease answer Yes or No: " );
           }
       }

    printf ("\n" );

    if ( elapsed >= secs )  return  2;
    if ( response == 'y' )  return  1;
    else                    return  0;

   }
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    It's not great, but I wrote it in a previous life, and it's free.
-- 
 _
Kevin D. Quitt         demott!kdq   kdq@demott.com
DeMott Electronics Co. 14707 Keswick St.   Van Nuys, CA 91405-1266
VOICE (818) 988-4975   FAX (818) 997-1190  MODEM (818) 997-4496 PEP last

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