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 */ 33 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 42 static void pigout(char *, int); 43 static void usage(void) __dead2; 44 45 int 46 main(int argc, char **argv) 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)) { 63 if (len >= (int)sizeof(buf)) { 64 fprintf(stderr, "pig: ate too much!\n"); 65 exit(1); 66 } 67 buf[len++] = ch; 68 continue; 69 } 70 if (len != 0) { 71 pigout(buf, len); 72 len = 0; 73 } 74 putchar(ch); 75 } 76 exit(0); 77 } 78 79 static void 80 pigout(char *buf, int len) 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) { 90 printf("%.*sway", len, buf); 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; 99 start < olen && !index("aeiouyAEIOUY", buf[start]);) { 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 } 105 printf("%.*say", olen, buf + start); 106 } 107 108 static void 109 usage(void) 110 { 111 fprintf(stderr, "usage: pig\n"); 112 exit(1); 113 } 114