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 40 static 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 55 int main(int, char *[]); 56 static void pigout(char *, int); 57 static void usage(void) __dead; 58 59 int 60 main(argc, argv) 61 int argc; 62 char *argv[]; 63 { 64 int len; 65 int ch; 66 char buf[1024]; 67 68 while ((ch = getopt(argc, argv, "")) != -1) 69 switch(ch) { 70 case '?': 71 default: 72 usage(); 73 } 74 argc -= optind; 75 argv += optind; 76 77 for (len = 0; (ch = getchar()) != EOF;) { 78 if (isalpha(ch)) { 79 if ((size_t)len >= sizeof(buf)) 80 errx(1, "ate too much!"); 81 buf[len++] = ch; 82 continue; 83 } 84 if (len != 0) { 85 pigout(buf, len); 86 len = 0; 87 } 88 (void)putchar(ch); 89 } 90 exit(0); 91 } 92 93 static void 94 pigout(buf, len) 95 char *buf; 96 int len; 97 { 98 int ch, start, i; 99 int olen, allupper, firstupper; 100 101 /* See if the word is all upper case */ 102 allupper = firstupper = isupper((unsigned char)buf[0]); 103 for (i = 1; i < len && allupper; i++) 104 allupper = allupper && isupper((unsigned char)buf[i]); 105 106 /* 107 * If the word starts with a vowel, append "way". Don't treat 'y' 108 * as a vowel if it appears first. 109 */ 110 if (strchr("aeiouAEIOU", buf[0]) != NULL) { 111 (void)printf("%.*s%s", len, buf, 112 allupper ? "WAY" : "way"); 113 return; 114 } 115 116 /* 117 * Copy leading consonants to the end of the word. The unit "qu" 118 * isn't treated as a vowel. 119 */ 120 if (!allupper) 121 buf[0] = tolower((unsigned char)buf[0]); 122 for (start = 0, olen = len; 123 !strchr("aeiouyAEIOUY", buf[start]) && start < olen;) { 124 ch = buf[len++] = buf[start++]; 125 if ((ch == 'q' || ch == 'Q') && start < olen && 126 (buf[start] == 'u' || buf[start] == 'U')) 127 buf[len++] = buf[start++]; 128 } 129 if (firstupper) 130 buf[start] = toupper((unsigned char)buf[start]); 131 (void)printf("%.*s%s", olen, buf + start, allupper ? "AY" : "ay"); 132 } 133 134 static void 135 usage() 136 { 137 (void)fprintf(stderr, "usage: pig\n"); 138 exit(1); 139 } 140