1#ifndef HEADER_CURL_MULTIBYTE_H
2#define HEADER_CURL_MULTIBYTE_H
3/***************************************************************************
4 * _ _ ____ _
5 * Project ___| | | | _ \| |
6 * / __| | | | |_) | |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
9 *
10 * Copyright (C) 1998 - 2022, Daniel Stenberg, <[email protected]>, et al.
11 *
12 * This software is licensed as described in the file COPYING, which
13 * you should have received as part of this distribution. The terms
14 * are also available at https://curl.se/docs/copyright.html.
15 *
16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17 * copies of the Software, and permit persons to whom the Software is
18 * furnished to do so, under the terms of the COPYING file.
19 *
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
22 *
23 * SPDX-License-Identifier: curl
24 *
25 ***************************************************************************/
26#include "curl_setup.h"
27
28#if defined(WIN32)
29
30 /*
31 * MultiByte conversions using Windows kernel32 library.
32 */
33
34wchar_t *curlx_convert_UTF8_to_wchar(const char *str_utf8);
35char *curlx_convert_wchar_to_UTF8(const wchar_t *str_w);
36#endif /* WIN32 */
37
38/*
39 * Macros curlx_convert_UTF8_to_tchar(), curlx_convert_tchar_to_UTF8()
40 * and curlx_unicodefree() main purpose is to minimize the number of
41 * preprocessor conditional directives needed by code using these
42 * to differentiate UNICODE from non-UNICODE builds.
43 *
44 * In the case of a non-UNICODE build the tchar strings are char strings that
45 * are duplicated via strdup and remain in whatever the passed in encoding is,
46 * which is assumed to be UTF-8 but may be other encoding. Therefore the
47 * significance of the conversion functions is primarily for UNICODE builds.
48 *
49 * Allocated memory should be free'd with curlx_unicodefree().
50 *
51 * Note: Because these are curlx functions their memory usage is not tracked
52 * by the curl memory tracker memdebug. You'll notice that curlx function-like
53 * macros call free and strdup in parentheses, eg (strdup)(ptr), and that's to
54 * ensure that the curl memdebug override macros do not replace them.
55 */
56
57#if defined(UNICODE) && defined(WIN32)
58
59#define curlx_convert_UTF8_to_tchar(ptr) curlx_convert_UTF8_to_wchar((ptr))
60#define curlx_convert_tchar_to_UTF8(ptr) curlx_convert_wchar_to_UTF8((ptr))
61
62typedef union {
63 unsigned short *tchar_ptr;
64 const unsigned short *const_tchar_ptr;
65 unsigned short *tbyte_ptr;
66 const unsigned short *const_tbyte_ptr;
67} xcharp_u;
68
69#else
70
71#define curlx_convert_UTF8_to_tchar(ptr) (strdup)(ptr)
72#define curlx_convert_tchar_to_UTF8(ptr) (strdup)(ptr)
73
74typedef union {
75 char *tchar_ptr;
76 const char *const_tchar_ptr;
77 unsigned char *tbyte_ptr;
78 const unsigned char *const_tbyte_ptr;
79} xcharp_u;
80
81#endif /* UNICODE && WIN32 */
82
83#define curlx_unicodefree(ptr) \
84 do { \
85 if(ptr) { \
86 (free)(ptr); \
87 (ptr) = NULL; \
88 } \
89 } while(0)
90
91#endif /* HEADER_CURL_MULTIBYTE_H */
92