deps/flac-1.3.2/src/libFLAC/windows_unicode_filenames.c

   1 /* libFLAC - Free Lossless Audio Codec library
   2  * Copyright (C) 2013-2016  Xiph.Org Foundation
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * - Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *
  11  * - Redistributions in binary form must reproduce the above copyright
  12  * notice, this list of conditions and the following disclaimer in the
  13  * documentation and/or other materials provided with the distribution.
  14  *
  15  * - Neither the name of the Xiph.org Foundation nor the names of its
  16  * contributors may be used to endorse or promote products derived from
  17  * this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
  23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  26  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  27  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  28  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifdef HAVE_CONFIG_H
  33 #  include <config.h>
  34 #endif
  35
  36 #include <io.h>
  37 #include "share/windows_unicode_filenames.h"
  38
  39 /* convert UTF-8 back to WCHAR. Caller is responsible for freeing memory */
  40 static wchar_t *wchar_from_utf8(const char *str)
  41 {
  42         wchar_t *widestr;
  43         int len;
  44
  45         if (!str)
  46                 return NULL;
  47         if ((len = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0)) == 0)
  48                 return NULL;
  49         if ((widestr = (wchar_t *)malloc(len*sizeof(wchar_t))) == NULL)
  50                 return NULL;
  51         if (MultiByteToWideChar(CP_UTF8, 0, str, -1, widestr, len) == 0) {
  52                 free(widestr);
  53                 widestr = NULL;
  54         }
  55
  56         return widestr;
  57 }
  58
  59
  60 static FLAC__bool utf8_filenames = false;
  61
  62
  63 void flac_internal_set_utf8_filenames(FLAC__bool flag)
  64 {
  65         utf8_filenames = flag ? true : false;
  66 }
  67
  68 FLAC__bool flac_internal_get_utf8_filenames(void)
  69 {
  70         return utf8_filenames;
  71 }
  72
  73 /* file functions */
  74
  75 FILE* flac_internal_fopen_utf8(const char *filename, const char *mode)
  76 {
  77         if (!utf8_filenames) {
  78                 return fopen(filename, mode);
  79         } else {
  80                 wchar_t *wname = NULL;
  81                 wchar_t *wmode = NULL;
  82                 FILE *f = NULL;
  83
  84                 do {
  85                         if (!(wname = wchar_from_utf8(filename))) break;
  86                         if (!(wmode = wchar_from_utf8(mode))) break;
  87                         f = _wfopen(wname, wmode);
  88                 } while(0);
  89
  90                 free(wname);
  91                 free(wmode);
  92
  93                 return f;
  94         }
  95 }
  96
  97 int flac_internal_stat64_utf8(const char *path, struct __stat64 *buffer)
  98 {
  99         if (!utf8_filenames) {
 100                 return _stat64(path, buffer);
 101         } else {
 102                 wchar_t *wpath;
 103                 int ret;
 104
 105                 if (!(wpath = wchar_from_utf8(path))) return -1;
 106                 ret = _wstat64(wpath, buffer);
 107                 free(wpath);
 108
 109                 return ret;
 110         }
 111 }
 112
 113 int flac_internal_chmod_utf8(const char *filename, int pmode)
 114 {
 115         if (!utf8_filenames) {
 116                 return _chmod(filename, pmode);
 117         } else {
 118                 wchar_t *wname;
 119                 int ret;
 120
 121                 if (!(wname = wchar_from_utf8(filename))) return -1;
 122                 ret = _wchmod(wname, pmode);
 123                 free(wname);
 124
 125                 return ret;
 126         }
 127 }
 128
 129 int flac_internal_utime_utf8(const char *filename, struct utimbuf *times)
 130 {
 131         if (!utf8_filenames) {
 132                 return utime(filename, times);
 133         } else {
 134                 wchar_t *wname;
 135                 struct __utimbuf64 ut;
 136                 int ret;
 137
 138                 if (!(wname = wchar_from_utf8(filename))) return -1;
 139                 ut.actime = times->actime;
 140                 ut.modtime = times->modtime;
 141                 ret = _wutime64(wname, &ut);
 142                 free(wname);
 143
 144                 return ret;
 145         }
 146 }
 147
 148 int flac_internal_unlink_utf8(const char *filename)
 149 {
 150         if (!utf8_filenames) {
 151                 return _unlink(filename);
 152         } else {
 153                 wchar_t *wname;
 154                 int ret;
 155
 156                 if (!(wname = wchar_from_utf8(filename))) return -1;
 157                 ret = _wunlink(wname);
 158                 free(wname);
 159
 160                 return ret;
 161         }
 162 }
 163
 164 int flac_internal_rename_utf8(const char *oldname, const char *newname)
 165 {
 166         if (!utf8_filenames) {
 167                 return rename(oldname, newname);
 168         } else {
 169                 wchar_t *wold = NULL;
 170                 wchar_t *wnew = NULL;
 171                 int ret = -1;
 172
 173                 do {
 174                         if (!(wold = wchar_from_utf8(oldname))) break;
 175                         if (!(wnew = wchar_from_utf8(newname))) break;
 176                         ret = _wrename(wold, wnew);
 177                 } while(0);
 178
 179                 free(wold);
 180                 free(wnew);
 181
 182                 return ret;
 183         }
 184 }
 185
 186 HANDLE WINAPI flac_internal_CreateFile_utf8(const char *lpFileName, DWORD dwDesiredAccess, DWORD dwShareMode, LPSECURITY_ATTRIBUTES lpSecurityAttributes, DWORD dwCreationDisposition, DWORD dwFlagsAndAttributes, HANDLE hTemplateFile)
 187 {
 188 #if _MSC_VER > 1900 && WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP)
 189         wchar_t *wname;
 190         HANDLE handle = INVALID_HANDLE_VALUE;
 191
 192         if ((wname = wchar_from_utf8(lpFileName)) != NULL) {
 193
 194                 handle = CreateFile2(wname, dwDesiredAccess, dwShareMode, CREATE_ALWAYS, NULL);
 195                 free(wname);
 196         }
 197
 198         return handle;
 199 #else
 200         if (!utf8_filenames) {
 201                 return CreateFileA(lpFileName, dwDesiredAccess, dwShareMode, lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
 202         } else {
 203                 wchar_t *wname;
 204                 HANDLE handle = INVALID_HANDLE_VALUE;
 205
 206                 if ((wname = wchar_from_utf8(lpFileName)) != NULL) {
 207                         handle = CreateFileW(wname, dwDesiredAccess, dwShareMode, lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
 208                         free(wname);
 209                 }
 210
 211                 return handle;
 212         }
 213 #endif
 214 }