1/* $NetBSD: pig.c,v 1.14 2009/08/12 08:22:24 dholland Exp $ */ 2 3/*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33#ifndef lint 34__COPYRIGHT("@(#) Copyright (c) 1992, 1993\ 35 The Regents of the University of California. All rights reserved."); 36#endif /* not lint */ 37 38#ifndef lint 39#if 0 40static char sccsid[] = "@(#)pig.c 8.2 (Berkeley) 5/4/95"; 41#else 42__RCSID("$NetBSD: pig.c,v 1.14 2009/08/12 08:22:24 dholland Exp $"); 43#endif 44#endif /* not lint */ 45 46#include <sys/types.h> 47 48#include <ctype.h> 49#include <err.h> 50#include <stdio.h> 51#include <stdlib.h> 52#include <string.h> 53#include <unistd.h> 54 55int main(int, char *[]); 56static void pigout(char *, int); 57static void usage(void) __dead; 58 59int 60main(int argc, char *argv[]) 61{ 62 int len; 63 int ch; 64 char buf[1024]; 65 66 while ((ch = getopt(argc, argv, "")) != -1) 67 switch(ch) { 68 case '?': 69 default: 70 usage(); 71 } 72 argc -= optind; 73 argv += optind; 74 75 for (len = 0; (ch = getchar()) != EOF;) { 76 if (isalpha(ch)) { 77 if ((size_t)len >= sizeof(buf)) 78 errx(1, "ate too much!"); 79 buf[len++] = ch; 80 continue; 81 } 82 if (len != 0) { 83 pigout(buf, len); 84 len = 0; 85 } 86 (void)putchar(ch); 87 } 88 exit(0); 89} 90 91static void 92pigout(char *buf, int len) 93{ 94 int ch, start, i; 95 int olen, allupper, firstupper; 96 97 /* See if the word is all upper case */ 98 allupper = firstupper = isupper((unsigned char)buf[0]); 99 for (i = 1; i < len && allupper; i++) 100 allupper = allupper && isupper((unsigned char)buf[i]); 101 102 /* 103 * If the word starts with a vowel, append "way". Don't treat 'y' 104 * as a vowel if it appears first. 105 */ 106 if (strchr("aeiouAEIOU", buf[0]) != NULL) { 107 (void)printf("%.*s%s", len, buf, 108 allupper ? "WAY" : "way"); 109 return; 110 } 111 112 /* 113 * Copy leading consonants to the end of the word. The unit "qu" 114 * isn't treated as a vowel. 115 */ 116 if (!allupper) 117 buf[0] = tolower((unsigned char)buf[0]); 118 for (start = 0, olen = len; 119 !strchr("aeiouyAEIOUY", buf[start]) && start < olen;) { 120 ch = buf[len++] = buf[start++]; 121 if ((ch == 'q' || ch == 'Q') && start < olen && 122 (buf[start] == 'u' || buf[start] == 'U')) 123 buf[len++] = buf[start++]; 124 } 125 if (firstupper) 126 buf[start] = toupper((unsigned char)buf[start]); 127 (void)printf("%.*s%s", olen, buf + start, allupper ? "AY" : "ay"); 128} 129 130static void 131usage(void) 132{ 133 (void)fprintf(stderr, "usage: pig\n"); 134 exit(1); 135} 136