/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 *      Copyright 2007 Sun Microsystems, Inc.
 *      All rights reserved.
 *      Use is subject to license terms.
 *
 * Very crude pig latin converter.
 * Piglatin is an encoded form of English that is often used by  children
 * as a game. A piglatin word is formed from an English word by:
 *
 *  .   If the word begins with a consonant, move the consonant to the end of
 *      the word and append the letters "ay". Example: "door" becomes "oorday".
 *
 *  .   If the word begins with a vowel, merely append "way" to the word.
 *      Example: "ate" becomes "ateway
 */

#include <stdio.h>
#include <strings.h>
#include <ctype.h>

int
main()
{
        char    buffer[32767], * cb, * sb;
        int     ic, ignore = 0, word = 0;

        sb = cb = &buffer[0];
        *sb = '\0';

        while ((ic = getc(stdin)) != EOF) {
                char c = (char)ic;

                /*
                 * Ignore all possible formatting statements.
                 */
                if (c == '%')
                        ignore = 1;

                /*
                 * Isolate the word that will be converted.
                 */
                if (isspace(ic) || (ispunct(ic) && ((ignore == 0) ||
                    ((c != '%') && (c != '.') && (c != '#') && (c != '-'))))) {
                        char s = buffer[0];

                        /*
                         * If we haven't collected any words yet simply
                         * printf the last character.
                         */
                        if (word == 0) {
                                (void) putc(ic, stdout);
                                continue;
                        }

                        /*
                         * Leave format strings alone - contain "%".
                         * Leave single characters alone, typically
                         * these result from "\n", "\t" etc.
                         */
                        if ((ignore == 0) && ((cb - buffer) > 1)) {
                                if ((s == 'a') || (s == 'A') ||
                                    (s == 'e') || (s == 'E') ||
                                    (s == 'i') || (s == 'I') ||
                                    (s == 'o') || (s == 'O') ||
                                    (s == 'u') || (s == 'U')) {
                                        /*
                                         * Append "way" to the word.
                                         */
                                        (void) strcpy(cb, "way");
                                } else {
                                        /*
                                         * Move first letter to the end
                                         * of the word and add "ay".
                                         */
                                        sb++;
                                        *cb = s;
                                        (void) strcpy(++cb, "ay");
                                }
                        } else
                                *cb = '\0';

                        /*
                         * Output the collected buffer, the last character
                         * read and reinitialize pointers for next round.
                         */
                        (void) printf("%s", sb);
                        (void) putc(ic, stdout);

                        sb = cb = &buffer[0];
                        word = ignore = 0;

                        continue;
                }

                /*
                 * Store this character into the word buffer.
                 */
                *cb++ = c;
                *cb = '\0';
                word = 1;
        }

        return (0);
}