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       1                 :            : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 :            : /*
       3                 :            :  * This file is part of the LibreOffice project.
       4                 :            :  *
       5                 :            :  * This Source Code Form is subject to the terms of the Mozilla Public
       6                 :            :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7                 :            :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8                 :            :  *
       9                 :            :  * This file incorporates work covered by the following license notice:
      10                 :            :  *
      11                 :            :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12                 :            :  *   contributor license agreements. See the NOTICE file distributed
      13                 :            :  *   with this work for additional information regarding copyright
      14                 :            :  *   ownership. The ASF licenses this file to you under the Apache
      15                 :            :  *   License, Version 2.0 (the "License"); you may not use this file
      16                 :            :  *   except in compliance with the License. You may obtain a copy of
      17                 :            :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18                 :            :  */
      19                 :            : 
      20                 :            : #include <ctype.h>
      21                 :            : #include <errno.h>
      22                 :            : #include <stdio.h>
      23                 :            : #include <stdlib.h>
      24                 :            : #include <string.h>
      25                 :            : 
      26                 :          0 : int main() {
      27                 :            :     for (;;) {
      28                 :            :         int c;
      29                 :          0 :         errno = 0;
      30                 :          0 :         c = getchar();
      31                 :          0 :         if (c == EOF) {
      32                 :          0 :             exit(errno == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
      33                 :          0 :         } else if (isalnum(c) || strchr("!$'()*+,-.:=@_~/\n", c) != NULL) {
      34                 :            :             /* valid RFC 2396 pchar characters + '/' + newline */
      35                 :          0 :             if (putchar(c) == EOF) {
      36                 :          0 :                 exit(EXIT_FAILURE);
      37                 :            :             }
      38                 :          0 :         } else if (printf("%%%02X", (unsigned char) (char) c) < 0) {
      39                 :          0 :             exit(EXIT_FAILURE);
      40                 :            :         }
      41                 :          0 :     }
      42                 :            : }
      43                 :            : 
      44                 :            : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */