1#ifndef HEADER_CURL_MULTIBYTE_H
2#define HEADER_CURL_MULTIBYTE_H
3/***************************************************************************
4 * _ _ ____ _
5 * Project ___| | | | _ \| |
6 * / __| | | | |_) | |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
9 *
10 * Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, 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 ***************************************************************************/
24#include "curl_setup.h"
25
26#if defined(WIN32)
27
28 /*
29 * MultiByte conversions using Windows kernel32 library.
30 */
31
32wchar_t *curlx_convert_UTF8_to_wchar(const char *str_utf8);
33char *curlx_convert_wchar_to_UTF8(const wchar_t *str_w);
34#endif /* WIN32 */
35
36/*
37 * Macros curlx_convert_UTF8_to_tchar(), curlx_convert_tchar_to_UTF8()
38 * and curlx_unicodefree() main purpose is to minimize the number of
39 * preprocessor conditional directives needed by code using these
40 * to differentiate UNICODE from non-UNICODE builds.
41 *
42 * In the case of a non-UNICODE build the tchar strings are char strings that
43 * are duplicated via strdup and remain in whatever the passed in encoding is,
44 * which is assumed to be UTF-8 but may be other encoding. Therefore the
45 * significance of the conversion functions is primarily for UNICODE builds.
46 *
47 * Allocated memory should be free'd with curlx_unicodefree().
48 *
49 * Note: Because these are curlx functions their memory usage is not tracked
50 * by the curl memory tracker memdebug. You'll notice that curlx function-like
51 * macros call free and strdup in parentheses, eg (strdup)(ptr), and that's to
52 * ensure that the curl memdebug override macros do not replace them.
53 */
54
55#if defined(UNICODE) && defined(WIN32)
56
57#define curlx_convert_UTF8_to_tchar(ptr) curlx_convert_UTF8_to_wchar((ptr))
58#define curlx_convert_tchar_to_UTF8(ptr) curlx_convert_wchar_to_UTF8((ptr))
59
60typedef union {
61 unsigned short *tchar_ptr;
62 const unsigned short *const_tchar_ptr;
63 unsigned short *tbyte_ptr;
64 const unsigned short *const_tbyte_ptr;
65} xcharp_u;
66
67#else
68
69#define curlx_convert_UTF8_to_tchar(ptr) (strdup)(ptr)
70#define curlx_convert_tchar_to_UTF8(ptr) (strdup)(ptr)
71
72typedef union {
73 char *tchar_ptr;
74 const char *const_tchar_ptr;
75 unsigned char *tbyte_ptr;
76 const unsigned char *const_tbyte_ptr;
77} xcharp_u;
78
79#endif /* UNICODE && WIN32 */
80
81#define curlx_unicodefree(ptr) \
82 do { \
83 if(ptr) { \
84 (free)(ptr); \
85 (ptr) = NULL; \
86 } \
87 } while(0)
88
89#endif /* HEADER_CURL_MULTIBYTE_H */
90