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      1 #ifndef HEADER_CURL_MULTIBYTE_H
      2 #define HEADER_CURL_MULTIBYTE_H
      3 /***************************************************************************
      4  *                                  _   _ ____  _
      5  *  Project                     ___| | | |  _ \| |
      6  *                             / __| | | | |_) | |
      7  *                            | (__| |_| |  _ <| |___
      8  *                             \___|\___/|_| \_\_____|
      9  *
     10  * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel (at) 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.haxx.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(USE_WIN32_IDN) || ((defined(USE_WINDOWS_SSPI) || \
     27                                 defined(USE_WIN32_LDAP)) && defined(UNICODE))
     28 
     29  /*
     30   * MultiByte conversions using Windows kernel32 library.
     31   */
     32 
     33 wchar_t *Curl_convert_UTF8_to_wchar(const char *str_utf8);
     34 char *Curl_convert_wchar_to_UTF8(const wchar_t *str_w);
     35 
     36 #endif /* USE_WIN32_IDN || ((USE_WINDOWS_SSPI || USE_WIN32_LDAP) && UNICODE) */
     37 
     38 
     39 #if defined(USE_WIN32_IDN) || defined(USE_WINDOWS_SSPI) || \
     40     defined(USE_WIN32_LDAP)
     41 
     42 /*
     43  * Macros Curl_convert_UTF8_to_tchar(), Curl_convert_tchar_to_UTF8()
     44  * and Curl_unicodefree() main purpose is to minimize the number of
     45  * preprocessor conditional directives needed by code using these
     46  * to differentiate UNICODE from non-UNICODE builds.
     47  *
     48  * When building with UNICODE defined, this two macros
     49  * Curl_convert_UTF8_to_tchar() and Curl_convert_tchar_to_UTF8()
     50  * return a pointer to a newly allocated memory area holding result.
     51  * When the result is no longer needed, allocated memory is intended
     52  * to be free'ed with Curl_unicodefree().
     53  *
     54  * When building without UNICODE defined, this macros
     55  * Curl_convert_UTF8_to_tchar() and Curl_convert_tchar_to_UTF8()
     56  * return the pointer received as argument. Curl_unicodefree() does
     57  * no actual free'ing of this pointer it is simply set to NULL.
     58  */
     59 
     60 #ifdef UNICODE
     61 
     62 #define Curl_convert_UTF8_to_tchar(ptr) Curl_convert_UTF8_to_wchar((ptr))
     63 #define Curl_convert_tchar_to_UTF8(ptr) Curl_convert_wchar_to_UTF8((ptr))
     64 #define Curl_unicodefree(ptr) \
     65   do {if((ptr)) {free((ptr)); (ptr) = NULL;}} WHILE_FALSE
     66 
     67 typedef union {
     68   unsigned short       *tchar_ptr;
     69   const unsigned short *const_tchar_ptr;
     70   unsigned short       *tbyte_ptr;
     71   const unsigned short *const_tbyte_ptr;
     72 } xcharp_u;
     73 
     74 #else
     75 
     76 #define Curl_convert_UTF8_to_tchar(ptr) (ptr)
     77 #define Curl_convert_tchar_to_UTF8(ptr) (ptr)
     78 #define Curl_unicodefree(ptr) \
     79   do {(ptr) = NULL;} WHILE_FALSE
     80 
     81 typedef union {
     82   char                *tchar_ptr;
     83   const char          *const_tchar_ptr;
     84   unsigned char       *tbyte_ptr;
     85   const unsigned char *const_tbyte_ptr;
     86 } xcharp_u;
     87 
     88 #endif /* UNICODE */
     89 
     90 #endif /* USE_WIN32_IDN || USE_WINDOWS_SSPI || USE_WIN32_LDAP */
     91 
     92 #endif /* HEADER_CURL_MULTIBYTE_H */
     93