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984263bc MD |
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. | |
6693db17 | 13 | * 3. Neither the name of the University nor the names of its contributors |
984263bc MD |
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. | |
1de703da MD |
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 $ | |
984263bc MD |
32 | */ |
33 | ||
984263bc MD |
34 | #include <sys/types.h> |
35 | ||
36 | #include <ctype.h> | |
37 | #include <stdio.h> | |
38 | #include <stdlib.h> | |
39 | #include <string.h> | |
40 | #include <unistd.h> | |
41 | ||
719497f4 | 42 | static void pigout(char *, int); |
09ac707a | 43 | static void usage(void) __dead2; |
984263bc MD |
44 | |
45 | int | |
e1acdbad | 46 | main(int argc, char **argv) |
984263bc MD |
47 | { |
48 | int len; | |
49 | int ch; | |
50 | char buf[1024]; | |
51 | ||
52 | while ((ch = getopt(argc, argv, "")) != -1) | |
53 | switch(ch) { | |
54 | case '?': | |
55 | default: | |
56 | usage(); | |
57 | } | |
58 | argc -= optind; | |
59 | argv += optind; | |
60 | ||
61 | for (len = 0; (ch = getchar()) != EOF;) { | |
62 | if (isalpha(ch)) { | |
e1acdbad | 63 | if (len >= (int)sizeof(buf)) { |
d9f85b33 | 64 | fprintf(stderr, "pig: ate too much!\n"); |
984263bc MD |
65 | exit(1); |
66 | } | |
67 | buf[len++] = ch; | |
68 | continue; | |
69 | } | |
70 | if (len != 0) { | |
71 | pigout(buf, len); | |
72 | len = 0; | |
73 | } | |
d9f85b33 | 74 | putchar(ch); |
984263bc MD |
75 | } |
76 | exit(0); | |
77 | } | |
78 | ||
719497f4 | 79 | static void |
e1acdbad | 80 | pigout(char *buf, int len) |
984263bc MD |
81 | { |
82 | int ch, start; | |
83 | int olen; | |
84 | ||
85 | /* | |
86 | * If the word starts with a vowel, append "way". Don't treat 'y' | |
87 | * as a vowel if it appears first. | |
88 | */ | |
89 | if (index("aeiouAEIOU", buf[0]) != NULL) { | |
d9f85b33 | 90 | printf("%.*sway", len, buf); |
984263bc MD |
91 | return; |
92 | } | |
93 | ||
94 | /* | |
95 | * Copy leading consonants to the end of the word. The unit "qu" | |
96 | * isn't treated as a vowel. | |
97 | */ | |
98 | for (start = 0, olen = len; | |
e0b1d537 | 99 | start < olen && !index("aeiouyAEIOUY", buf[start]);) { |
984263bc MD |
100 | ch = buf[len++] = buf[start++]; |
101 | if ((ch == 'q' || ch == 'Q') && start < olen && | |
102 | (buf[start] == 'u' || buf[start] == 'U')) | |
103 | buf[len++] = buf[start++]; | |
104 | } | |
d9f85b33 | 105 | printf("%.*say", olen, buf + start); |
984263bc MD |
106 | } |
107 | ||
719497f4 | 108 | static void |
e1acdbad | 109 | usage(void) |
984263bc | 110 | { |
d9f85b33 | 111 | fprintf(stderr, "usage: pig\n"); |
984263bc MD |
112 | exit(1); |
113 | } |