battlestar/getcom.c

   1 /*      $NetBSD: getcom.c,v 1.8 2000/09/21 09:49:03 jsm Exp $   */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 #ifndef lint
  38 #if 0
  39 static char sccsid[] = "@(#)getcom.c    8.1 (Berkeley) 5/31/93";
  40 #else
  41 __RCSID("$NetBSD: getcom.c,v 1.8 2000/09/21 09:49:03 jsm Exp $");
  42 #endif
  43 #endif                          /* not lint */
  44
  45 #include "extern.h"
  46
  47 char   *
  48 getcom(buf, size, prompt, error)
  49         char   *buf;
  50         int     size;
  51         const char   *prompt, *error;
  52 {
  53         for (;;) {
  54                 fputs(prompt, stdout);
  55                 if (fgets(buf, size, stdin) == 0) {
  56                         if (feof(stdin))
  57                                 die();
  58                         clearerr(stdin);
  59                         continue;
  60                 }
  61                 while (isspace(*buf))
  62                         buf++;
  63                 if (*buf)
  64                         break;
  65                 if (error)
  66                         puts(error);
  67         }
  68         return (buf);
  69 }
  70
  71
  72 /*
  73  * shifts to UPPERCASE if flag > 0, lowercase if flag < 0,
  74  * and leaves it unchanged if flag = 0
  75  */
  76 char   *
  77 getword(buf1, buf2, flag)
  78         char   *buf1, *buf2;
  79         int     flag;
  80 {
  81         while (isspace(*buf1))
  82                 buf1++;
  83         if (*buf1 != ',') {
  84                 if (!*buf1) {
  85                         *buf2 = 0;
  86                         return (0);
  87                 }
  88                 while (*buf1 && !isspace(*buf1) && *buf1 != ',')
  89                         if (flag < 0) {
  90                                 if (isupper(*buf1))
  91                                         *buf2++ = tolower(*buf1++);
  92                                 else
  93                                         *buf2++ = *buf1++;
  94                         } else if (flag > 0) {
  95                                 if (islower(*buf1))
  96                                         *buf2++ = toupper(*buf1++);
  97                                 else
  98                                         *buf2++ = *buf1++;
  99                         } else
 100                                 *buf2++ = *buf1++;
 101         } else
 102                 *buf2++ = *buf1++;
 103         *buf2 = 0;
 104         while (isspace(*buf1))
 105                 buf1++;
 106         return (*buf1 ? buf1 : 0);
 107 }