/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
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 * only, as published by the Free Software Foundation.
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 * OpenOffice.org is distributed in the hope that it will be useful,
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
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 *
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 * version 3 along with OpenOffice.org.  If not, see
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#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);
        }
    }
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
