battlestar/getcom.c

   1 /*
   2  * Copyright (c) 1983 Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifndef lint
  35 /*static char sccsid[] = "from: @(#)getcom.c    5.3 (Berkeley) 6/1/90";*/
  36 static char rcsid[] = "$Id: getcom.c,v 1.2 1993/08/01 18:56:00 mycroft Exp $";
  37 #endif /* not lint */
  38
  39 #include <stdio.h>
  40 #include <ctype.h>
  41
  42 char *
  43 getcom(buf, size, prompt, error)
  44         char *buf;
  45         int size;
  46         char *prompt, *error;
  47 {
  48         for (;;) {
  49                 fputs(prompt, stdout);
  50                 if (fgets(buf, size, stdin) == 0) {
  51                         clearerr(stdin);
  52                         continue;
  53                 }
  54                 while (isspace(*buf))
  55                         buf++;
  56                 if (*buf)
  57                         break;
  58                 if (error)
  59                         puts(error);
  60         }
  61         return (buf);
  62 }
  63
  64
  65 /*
  66  * shifts to UPPERCASE if flag > 0, lowercase if flag < 0,
  67  * and leaves it unchanged if flag = 0
  68  */
  69 char *
  70 getword(buf1, buf2, flag)
  71         register char *buf1, *buf2;
  72         register flag;
  73 {
  74         while (isspace(*buf1))
  75                 buf1++;
  76         if (*buf1 != ',') {
  77                 if (!*buf1) {
  78                         *buf2 = 0;
  79                         return (0);
  80                 }
  81                 while (*buf1 && !isspace(*buf1) && *buf1 != ',')
  82                         if (flag < 0)
  83                                 if (isupper(*buf1))
  84                                         *buf2++ = tolower(*buf1++);
  85                                 else
  86                                         *buf2++ = *buf1++;
  87                         else if (flag > 0)
  88                                 if (islower(*buf1))
  89                                         *buf2++ = toupper(*buf1++);
  90                                 else
  91                                         *buf2++ = *buf1++;
  92                         else
  93                                 *buf2++ = *buf1++;
  94         } else
  95                 *buf2++ = *buf1++;
  96         *buf2 = 0;
  97         while (isspace(*buf1))
  98                 buf1++;
  99         return (*buf1 ? buf1 : 0);
 100 }