1 /* $NetBSD: pig.c,v 1.8 1999/09/18 19:38:53 jsm 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1992, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)pig.c 8.2 (Berkeley) 5/4/95"; 45 #else 46 __RCSID("$NetBSD: pig.c,v 1.8 1999/09/18 19:38:53 jsm Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/types.h> 51 52 #include <ctype.h> 53 #include <err.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <unistd.h> 58 59 int main __P((int, char *[])); 60 void pigout __P((char *, int)); 61 void usage __P((void)) __attribute__((__noreturn__)); 62 63 int 64 main(argc, argv) 65 int argc; 66 char *argv[]; 67 { 68 int len; 69 int ch; 70 char buf[1024]; 71 72 while ((ch = getopt(argc, argv, "")) != -1) 73 switch(ch) { 74 case '?': 75 default: 76 usage(); 77 } 78 argc -= optind; 79 argv += optind; 80 81 for (len = 0; (ch = getchar()) != EOF;) { 82 if (isalpha(ch)) { 83 if ((size_t)len >= sizeof(buf)) 84 errx(1, "ate too much!"); 85 buf[len++] = ch; 86 continue; 87 } 88 if (len != 0) { 89 pigout(buf, len); 90 len = 0; 91 } 92 (void)putchar(ch); 93 } 94 exit(0); 95 } 96 97 void 98 pigout(buf, len) 99 char *buf; 100 int len; 101 { 102 int ch, start, i; 103 int olen, allupper, firstupper; 104 105 /* See if the word is all upper case */ 106 allupper = firstupper = isupper(buf[0]); 107 for (i = 1; i < len && allupper; i++) 108 allupper = allupper && isupper(buf[i]); 109 110 /* 111 * If the word starts with a vowel, append "way". Don't treat 'y' 112 * as a vowel if it appears first. 113 */ 114 if (strchr("aeiouAEIOU", buf[0]) != NULL) { 115 (void)printf("%.*s%s", len, buf, 116 allupper ? "WAY" : "way"); 117 return; 118 } 119 120 /* 121 * Copy leading consonants to the end of the word. The unit "qu" 122 * isn't treated as a vowel. 123 */ 124 if (!allupper) 125 buf[0] = tolower(buf[0]); 126 for (start = 0, olen = len; 127 !strchr("aeiouyAEIOUY", buf[start]) && start < olen;) { 128 ch = buf[len++] = buf[start++]; 129 if ((ch == 'q' || ch == 'Q') && start < olen && 130 (buf[start] == 'u' || buf[start] == 'U')) 131 buf[len++] = buf[start++]; 132 } 133 if (firstupper) 134 buf[start] = toupper(buf[start]); 135 (void)printf("%.*s%s", olen, buf + start, allupper ? "AY" : "ay"); 136 } 137 138 void 139 usage() 140 { 141 (void)fprintf(stderr, "usage: pig\n"); 142 exit(1); 143 } 144