games/battlestar/getcom.c

   1 /*      @(#)getcom.c    8.1 (Berkeley) 5/31/93                          */
   2 /*      $NetBSD: getcom.c,v 1.14 2012/01/16 17:38:16 christos Exp $     */
   3
   4 /*
   5  * Copyright (c) 1983, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #include "extern.h"
  34
  35 char *
  36 getcom(char *buf, int size, const char *prompt, const char *error)
  37 {
  38         for (;;) {
  39                 fputs(prompt, stdout);
  40                 if (fgets(buf, size, stdin) == NULL) {
  41                         if (feof(stdin))
  42                                 die();
  43                         clearerr(stdin);
  44                         continue;
  45                 }
  46                 while (isspace((unsigned char)*buf))
  47                         buf++;
  48                 if (*buf)
  49                         break;
  50                 if (error)
  51                         puts(error);
  52         }
  53         /* If we didn't get to the end of line, don't read it in next time. */
  54         if (buf[strlen(buf) - 1] != '\n') {
  55                 int i;
  56                 while ((i = getchar()) != '\n' && i != EOF)
  57                         continue;
  58         }
  59         return (buf);
  60 }
  61
  62
  63 /*
  64  * shifts to UPPERCASE if flag > 0, lowercase if flag < 0,
  65  * and leaves it unchanged if flag = 0
  66  */
  67 char   *
  68 getword(char *buf1, char *buf2, int flag)
  69 {
  70         int cnt;
  71
  72         cnt = 1;
  73         while (isspace((unsigned char)*buf1))
  74                 buf1++;
  75         if (*buf1 != ',') {
  76                 if (!*buf1) {
  77                         *buf2 = 0;
  78                         return (0);
  79                 }
  80                 while (cnt < WORDLEN && *buf1 &&
  81                     !isspace((unsigned char)*buf1) && *buf1 != ',')
  82                         if (flag < 0) {
  83                                 if (isupper((unsigned char)*buf1)) {
  84                                         *buf2++ =
  85                                             tolower((unsigned char)*buf1++);
  86                                         cnt++;
  87                                 } else {
  88                                         *buf2++ = *buf1++;
  89                                         cnt++;
  90                                 }
  91                         } else if (flag > 0) {
  92                                 if (islower((unsigned char)*buf1)) {
  93                                         *buf2++ =
  94                                             toupper((unsigned char)*buf1++);
  95                                         cnt++;
  96                                 } else {
  97                                         *buf2++ = *buf1++;
  98                                         cnt++;
  99                                 }
 100                         } else {
 101                                 *buf2++ = *buf1++;
 102                                 cnt++;
 103                         }
 104                 if (cnt == WORDLEN)
 105                         while (*buf1 && !isspace((unsigned char)*buf1))
 106                                 buf1++;
 107         } else
 108                 *buf2++ = *buf1++;
 109         *buf2 = '\0';
 110         while (isspace((unsigned char)*buf1))
 111                 buf1++;
 112         return (*buf1 ? buf1 : NULL);
 113 }