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 43 void pigout (char *, int); 44 void usage (void); 45 46 int 47 main(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 80 void 81 pigout(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 } 108 109 void 110 usage(void) 111 { 112 (void)fprintf(stderr, "usage: pig\n"); 113 exit(1); 114 } 115