Merge branch 'vendor/BINUTILS220'
[dragonfly.git] / games / pig / pig.c
... / ...
CommitLineData
1/*-
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#) Copyright (c) 1992, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)pig.c 8.2 (Berkeley) 5/4/95
31 * $FreeBSD: src/games/pig/pig.c,v 1.7 1999/11/30 03:49:08 billf Exp $
32 * $DragonFly: src/games/pig/pig.c,v 1.4 2005/04/25 16:10:24 liamfoy Exp $
33 */
34
35#include <sys/types.h>
36
37#include <ctype.h>
38#include <stdio.h>
39#include <stdlib.h>
40#include <string.h>
41#include <unistd.h>
42
43void pigout (char *, int);
44void usage (void);
45
46int
47main(int argc, char **argv)
48{
49 int len;
50 int ch;
51 char buf[1024];
52
53 while ((ch = getopt(argc, argv, "")) != -1)
54 switch(ch) {
55 case '?':
56 default:
57 usage();
58 }
59 argc -= optind;
60 argv += optind;
61
62 for (len = 0; (ch = getchar()) != EOF;) {
63 if (isalpha(ch)) {
64 if (len >= (int)sizeof(buf)) {
65 (void)fprintf(stderr, "pig: ate too much!\n");
66 exit(1);
67 }
68 buf[len++] = ch;
69 continue;
70 }
71 if (len != 0) {
72 pigout(buf, len);
73 len = 0;
74 }
75 (void)putchar(ch);
76 }
77 exit(0);
78}
79
80void
81pigout(char *buf, int len)
82{
83 int ch, start;
84 int olen;
85
86 /*
87 * If the word starts with a vowel, append "way". Don't treat 'y'
88 * as a vowel if it appears first.
89 */
90 if (index("aeiouAEIOU", buf[0]) != NULL) {
91 (void)printf("%.*sway", len, buf);
92 return;
93 }
94
95 /*
96 * Copy leading consonants to the end of the word. The unit "qu"
97 * isn't treated as a vowel.
98 */
99 for (start = 0, olen = len;
100 !index("aeiouyAEIOUY", buf[start]) && start < olen;) {
101 ch = buf[len++] = buf[start++];
102 if ((ch == 'q' || ch == 'Q') && start < olen &&
103 (buf[start] == 'u' || buf[start] == 'U'))
104 buf[len++] = buf[start++];
105 }
106 (void)printf("%.*say", olen, buf + start);
107}
108
109void
110usage(void)
111{
112 (void)fprintf(stderr, "usage: pig\n");
113 exit(1);
114}