1 /* $OpenBSD: pig.c,v 1.17 2016/03/07 12:07:56 mestre Exp $ */
2 /* $NetBSD: pig.c,v 1.2 1995/03/23 08:41:40 cgd Exp $ */
3
4 /*-
5 * Copyright (c) 1992, 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 <ctype.h>
34 #include <err.h>
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include <unistd.h>
39
40 void pigout(char *, int);
41 __dead void usage(void);
42
43 int
main(int argc,char * argv[])44 main(int argc, char *argv[])
45 {
46 int len;
47 int ch;
48 char buf[1024];
49
50 if (pledge("stdio", NULL) == -1)
51 err(1, "pledge");
52
53 while ((ch = getopt(argc, argv, "h")) != -1)
54 switch(ch) {
55 case 'h':
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 >= sizeof(buf))
65 errx(1, "ate too much!");
66 buf[len++] = ch;
67 continue;
68 }
69 if (len != 0) {
70 pigout(buf, len);
71 len = 0;
72 }
73 (void)putchar(ch);
74 }
75 return 0;
76 }
77
78 void
pigout(char * buf,int len)79 pigout(char *buf, int len)
80 {
81 int ch, start, i;
82 int olen, allupper, firstupper;
83
84 /* See if the word is all upper case */
85 allupper = firstupper = isupper((unsigned char)buf[0]);
86 for (i = 1; i < len && allupper; i++)
87 allupper = allupper && isupper((unsigned char)buf[i]);
88
89 /*
90 * If the word starts with a vowel, append "way". Don't treat 'y'
91 * as a vowel if it appears first.
92 */
93 if (strchr("aeiouAEIOU", buf[0]) != NULL) {
94 (void)printf("%.*s%s", len, buf,
95 allupper ? "WAY" : "way");
96 return;
97 }
98
99 /*
100 * Copy leading consonants to the end of the word. The unit "qu"
101 * isn't treated as a vowel.
102 */
103 if (!allupper)
104 buf[0] = tolower((unsigned char)buf[0]);
105 for (start = 0, olen = len;
106 !strchr("aeiouyAEIOUY", buf[start]) && start < olen;) {
107 ch = buf[len++] = buf[start++];
108 if ((ch == 'q' || ch == 'Q') && start < olen &&
109 (buf[start] == 'u' || buf[start] == 'U'))
110 buf[len++] = buf[start++];
111 }
112 if (firstupper)
113 buf[start] = toupper((unsigned char)buf[start]);
114 (void)printf("%.*s%s", olen, buf + start, allupper ? "AY" : "ay");
115 }
116
117 void
usage(void)118 usage(void)
119 {
120 (void)fprintf(stderr, "usage: %s\n", getprogname());
121 exit(1);
122 }
123