kernel - Add vm_page_alloczwq()/vm_page_freezwq(), refactor comments
[dragonfly.git] / 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 }