/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: uri-encode.c,v $
 *
 *  $Revision: 1.2 $
 *
 *  last change: $Author: ihi $ $Date: 2006-08-01 11:27:06 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2006 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/

#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main() {
    for (;;) {
        int c;
        errno = 0;
        c = getchar();
        if (c == EOF) {
            exit(errno == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
        } else if (isalnum(c) || strchr("!$'()*+,-.:=@_~/\n", c) != NULL) {
            /* valid RFC 2396 pchar characters + '/' + newline */
            if (putchar(c) == EOF) {
                exit(EXIT_FAILURE);
            }
        } else if (printf("%%%02X", (unsigned char) (char) c) < 0) {
            exit(EXIT_FAILURE);
        }
    }
}