1 /* ---- ORIGINAL COPYRIGHT BEGIN ----- */
  2 /*    $NetBSD: pig.c,v 1.11 2004/11/05 21:30:32 dsl Exp $   */
  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 #ifndef lint
 33 __COPYRIGHT("@(#) Copyright (c) 1992, 1993\n\
 34       The Regents of the University of California.  All rights reserved.\n");
 35 #endif /* not lint */
 36 
 37 #ifndef lint
 38 #if 0
 39 static char sccsid[] = "@(#)pig.c   8.2 (Berkeley) 5/4/95";
 40 #else
 41 __RCSID("$NetBSD: pig.c,v 1.11 2004/11/05 21:30:32 dsl Exp $");
 42 #endif
 43 #endif /* not lint */
 44 /* ---- ORIGINAL COPYRIGHT END ----- */
 45 
 46 /*以降 C89/90 化と BSD 依存部分除去だけした、「ほぼ元のまま」*/
 47 
 48 #include <stdio.h>
 49 #include <stdlib.h>
 50 #include <string.h>
 51 #include <sys/types.h>
 52 #include <ctype.h>
 53 
 54 void pigout(char* buf, int len)
 55 {
 56   int ch, start, i;
 57   int olen, allupper, firstupper;
 58 
 59   /* See if the word is all upper case */
 60   allupper = firstupper = isupper((unsigned char)buf[0]);
 61   for (i = 1; i < len && allupper; i++)
 62     allupper = allupper && isupper((unsigned char)buf[i]);
 63 
 64   /*
 65    * If the word starts with a vowel, append "way".  Don't treat 'y'
 66    * as a vowel if it appears first.
 67    */
 68   if (strchr("aeiouAEIOU", buf[0]) != NULL) {
 69     (void)printf("%.*s%s", len, buf,
 70          allupper ? "WAY" : "way");
 71     return;
 72   }
 73 
 74   /*
 75    * Copy leading consonants to the end of the word.  The unit "qu"
 76    * isn't treated as a vowel.
 77    */
 78   if (!allupper)
 79     buf[0] = tolower((unsigned char)buf[0]);
 80   for (start = 0, olen = len;
 81        !strchr("aeiouyAEIOUY", buf[start]) && start < olen;) {
 82     ch = buf[len++] = buf[start++];
 83     if ((ch == 'q' || ch == 'Q') && start < olen &&
 84     (buf[start] == 'u' || buf[start] == 'U'))
 85       buf[len++] = buf[start++];
 86   }
 87   if (firstupper)
 88     buf[start] = toupper((unsigned char)buf[start]);
 89   (void)printf("%.*s%s", olen, buf + start, allupper ? "AY" : "ay");
 90 }
 91 
 92 int main(int argc, char** argv)
 93 {
 94   int len;
 95   int ch;
 96   char buf[1024];
 97 
 98   for (len = 0; (ch = getchar()) != EOF;) {
 99     if (isalpha(ch)) {
100       if ((size_t)len >= sizeof(buf))
101         return 1;
102       buf[len++] = ch;
103       continue;
104     }
105     if (len != 0) {
106       pigout(buf, len);
107       len = 0;
108     }
109     (void)putchar(ch);
110   }
111   return 0;
112 }