tin  2.4.4
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  Fossies Dox: tin-2.4.4.tar.xz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

joinpath.c
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1 /*
2  * Project : tin - a Usenet reader
3  * Module : joinpath.c
4  * Author : Thomas Dickey <dickey@invisible-island.net>
5  * Created : 1997-01-10
6  * Updated : 2008-12-04
7  * Notes :
8  *
9  * Copyright (c) 1997-2020 Thomas Dickey <dickey@invisible-island.net>
10  * All rights reserved.
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  *
16  * 1. Redistributions of source code must retain the above copyright notice,
17  * this list of conditions and the following disclaimer.
18  *
19  * 2. Redistributions in binary form must reproduce the above copyright
20  * notice, this list of conditions and the following disclaimer in the
21  * documentation and/or other materials provided with the distribution.
22  *
23  * 3. Neither the name of the copyright holder nor the names of its
24  * contributors may be used to endorse or promote products derived from
25  * this software without specific prior written permission.
26  *
27  * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
31  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37  * POSSIBILITY OF SUCH DAMAGE.
38  */
39 
40 
41 #ifndef TIN_H
42 # include "tin.h"
43 #endif /* !TIN_H */
44 
45 /*
46  * Concatenate dir+file, ensuring that we don't introduce extra '/', since some
47  * systems (e.g., Apollo) use "//" for special purposes.
48  */
49 void
51  char *result,
52  size_t result_size,
53  const char *dir,
54  const char *file)
55 {
56  size_t result_len;
57 
58  (void) strncpy(result, dir, result_size - 1);
59  result[result_size - 1] = '\0';
60  result_len = strlen(result);
61  if ((result_len < (result_size - 1)) && (result[0] == '\0' || result[strlen(result) - 1] != '/')) {
62  (void) strcat(result, "/");
63  result_len++;
64  }
65  if (result_len < (result_size - 1)) {
66  (void) strncat(result, BlankIfNull(file), result_size - result_len - 1);
67  result[result_size - 1] = '\0';
68  }
69 }
tin.h
BlankIfNull
#define BlankIfNull(p)
Definition: tin.h:2206
joinpath
void joinpath(char *result, size_t result_size, const char *dir, const char *file)
Definition: joinpath.c:50