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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1992, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)pig.c 8.2 (Berkeley) 5/4/95 35 * $FreeBSD: src/games/pig/pig.c,v 1.7 1999/11/30 03:49:08 billf Exp $ 36 * $DragonFly: src/games/pig/pig.c,v 1.4 2005/04/25 16:10:24 liamfoy Exp $ 37 */ 38 39 #include <sys/types.h> 40 41 #include <ctype.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <unistd.h> 46 47 void pigout (char *, int); 48 void usage (void); 49 50 int 51 main(int argc, char **argv) 52 { 53 int len; 54 int ch; 55 char buf[1024]; 56 57 while ((ch = getopt(argc, argv, "")) != -1) 58 switch(ch) { 59 case '?': 60 default: 61 usage(); 62 } 63 argc -= optind; 64 argv += optind; 65 66 for (len = 0; (ch = getchar()) != EOF;) { 67 if (isalpha(ch)) { 68 if (len >= (int)sizeof(buf)) { 69 (void)fprintf(stderr, "pig: ate too much!\n"); 70 exit(1); 71 } 72 buf[len++] = ch; 73 continue; 74 } 75 if (len != 0) { 76 pigout(buf, len); 77 len = 0; 78 } 79 (void)putchar(ch); 80 } 81 exit(0); 82 } 83 84 void 85 pigout(char *buf, int len) 86 { 87 int ch, start; 88 int olen; 89 90 /* 91 * If the word starts with a vowel, append "way". Don't treat 'y' 92 * as a vowel if it appears first. 93 */ 94 if (index("aeiouAEIOU", buf[0]) != NULL) { 95 (void)printf("%.*sway", len, buf); 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 for (start = 0, olen = len; 104 !index("aeiouyAEIOUY", buf[start]) && start < olen;) { 105 ch = buf[len++] = buf[start++]; 106 if ((ch == 'q' || ch == 'Q') && start < olen && 107 (buf[start] == 'u' || buf[start] == 'U')) 108 buf[len++] = buf[start++]; 109 } 110 (void)printf("%.*say", olen, buf + start); 111 } 112 113 void 114 usage(void) 115 { 116 (void)fprintf(stderr, "usage: pig\n"); 117 exit(1); 118 } 119