Home | History | Annotate | Line # | Download | only in pig
pig.c revision 1.1.1.1 
      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 
     34 #ifndef lint
     35 static char copyright[] =
     36 "@(#) Copyright (c) 1992, 1993\n\
     37 	The Regents of the University of California.  All rights reserved.\n";
     38 #endif /* not lint */
     39 
     40 #ifndef lint
     41 static char sccsid[] = "@(#)pig.c	8.2 (Berkeley) 5/4/95";
     42 #endif /* not lint */
     43 
     44 #include <sys/types.h>
     45 
     46 #include <ctype.h>
     47 #include <stdio.h>
     48 #include <stdlib.h>
     49 #include <string.h>
     50 #include <unistd.h>
     51 
     52 void pigout __P((char *, int));
     53 void usage __P((void));
     54 
     55 int
     56 main(argc, argv)
     57 	int argc;
     58 	char *argv[];
     59 {
     60 	register int len;
     61 	int ch;
     62 	char buf[1024];
     63 
     64 	while ((ch = getopt(argc, argv, "")) != EOF)
     65 		switch(ch) {
     66 		case '?':
     67 		default:
     68 			usage();
     69 		}
     70 	argc -= optind;
     71 	argv += optind;
     72 
     73 	for (len = 0; (ch = getchar()) != EOF;) {
     74 		if (isalpha(ch)) {
     75 			if (len >= sizeof(buf)) {
     76 				(void)fprintf(stderr, "pig: ate too much!\n");
     77 				exit(1);
     78 			}
     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 
     91 void
     92 pigout(buf, len)
     93 	char *buf;
     94 	int len;
     95 {
     96 	register int ch, start;
     97 	int olen;
     98 
     99 	/*
    100 	 * If the word starts with a vowel, append "way".  Don't treat 'y'
    101 	 * as a vowel if it appears first.
    102 	 */
    103 	if (index("aeiouAEIOU", buf[0]) != NULL) {
    104 		(void)printf("%.*sway", len, buf);
    105 		return;
    106 	}
    107 
    108 	/*
    109 	 * Copy leading consonants to the end of the word.  The unit "qu"
    110 	 * isn't treated as a vowel.
    111 	 */
    112 	for (start = 0, olen = len;
    113 	    !index("aeiouyAEIOUY", buf[start]) && start < olen;) {
    114 		ch = buf[len++] = buf[start++];
    115 		if ((ch == 'q' || ch == 'Q') && start < olen &&
    116 		    (buf[start] == 'u' || buf[start] == 'U'))
    117 			buf[len++] = buf[start++];
    118 	}
    119 	(void)printf("%.*say", olen, buf + start);
    120 }
    121 
    122 void
    123 usage()
    124 {
    125 	(void)fprintf(stderr, "usage: pig\n");
    126 	exit(1);
    127 }
    128