--- /dev/null
+.\" $NetBSD: pig.6,v 1.5 2003/08/07 09:37:31 agc Exp $
+.\"
+.\" Copyright (c) 1992 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)pig.6 8.1 (Berkeley) 6/10/93
+.\"
+.Dd June 10, 1993
+.Dt PIG 6
+.Os
+.Sh NAME
+.Nm pig
+.Nd eformatray inputway asway Igpay Atinlay
+.Sh SYNOPSIS
+.Nm
+.Sh DESCRIPTION
+Ethay
+.Nm
+utilityway eadsray ethay andardstay inputway andway iteswray itway
+outway otay andardstay outputway inway Igpay Atinlay.
+.Pp
+Usefulway orfay eneratinggay onthlymay eportsray.
--- /dev/null
+/* $NetBSD: pig.c,v 1.15 2012/06/19 05:46:09 dholland Exp $ */
+
+/*-
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__COPYRIGHT("@(#) Copyright (c) 1992, 1993\
+ The Regents of the University of California. All rights reserved.");
+#endif /* not lint */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)pig.c 8.2 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: pig.c,v 1.15 2012/06/19 05:46:09 dholland Exp $");
+#endif
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+int main(int, char *[]);
+static void pigout(char *, int);
+static void usage(void) __dead;
+
+int
+main(int argc, char *argv[])
+{
+ int len;
+ int ch;
+ char buf[1024];
+
+ while ((ch = getopt(argc, argv, "")) != -1)
+ switch(ch) {
+ case '?':
+ default:
+ usage();
+ }
+ argc -= optind;
+ argv += optind;
+
+ for (len = 0; (ch = getchar()) != EOF;) {
+ if (isalpha(ch)) {
+ if ((size_t)len >= sizeof(buf))
+ errx(1, "ate too much!");
+ buf[len++] = ch;
+ continue;
+ }
+ if (len != 0) {
+ pigout(buf, len);
+ len = 0;
+ }
+ (void)putchar(ch);
+ }
+ exit(0);
+}
+
+static void
+pigout(char *buf, int len)
+{
+ int ch, start, i;
+ int olen, allupper, firstupper;
+
+ /* See if the word is all upper case */
+ allupper = firstupper = isupper((unsigned char)buf[0]);
+ for (i = 1; i < len && allupper; i++)
+ allupper = allupper && isupper((unsigned char)buf[i]);
+
+ /*
+ * If the word starts with a vowel, append "way". Don't treat 'y'
+ * as a vowel if it appears first.
+ */
+ if (strchr("aeiouAEIOU", buf[0]) != NULL) {
+ (void)printf("%.*s%s", len, buf,
+ allupper ? "WAY" : "way");
+ return;
+ }
+
+ /*
+ * Copy leading consonants to the end of the word. The unit "qu"
+ * isn't treated as a vowel.
+ */
+ if (!allupper)
+ buf[0] = tolower((unsigned char)buf[0]);
+ for (start = 0, olen = len;
+ !strchr("aeiouyAEIOUY", buf[start]) && start < olen;) {
+ ch = buf[len++] = buf[start++];
+ if ((ch == 'q' || ch == 'Q') && start < olen &&
+ (buf[start] == 'u' || buf[start] == 'U'))
+ buf[len++] = buf[start++];
+ }
+ if (firstupper)
+ buf[start] = toupper((unsigned char)buf[start]);
+ (void)printf("%.*s%s", olen, buf + start, allupper ? "AY" : "ay");
+}
+
+static void
+usage(void)
+{
+ (void)fprintf(stderr, "usage: pig\n");
+ exit(1);
+}