1 /*
2 * Dirent interface for Microsoft Visual Studio
3 * Version 1.21
4 *
5 * Copyright (C) 2006-2012 Toni Ronkko
6 * This file is part of dirent. Dirent may be freely distributed
7 * under the MIT license. For all details and documentation, see
8 * https://github.com/tronkko/dirent
9 */
10 #ifndef DIRENT_H
11 #define DIRENT_H
12
13 /*
14 * Define architecture flags so we don't need to include windows.h.
15 * Avoiding windows.h makes it simpler to use windows sockets in conjunction
16 * with dirent.h.
17 */
18 #if !defined(_68K_) && !defined(_MPPC_) && !defined(_X86_) && !defined(_IA64_) && !defined(_AMD64_) && defined(_M_IX86)
19 # define _X86_
20 #endif
21 #if !defined(_68K_) && !defined(_MPPC_) && !defined(_X86_) && !defined(_IA64_) && !defined(_AMD64_) && defined(_M_AMD64)
22 #define _AMD64_
23 #endif
24
25 #include <stdio.h>
26 #include <stdarg.h>
27 #include <windef.h>
28 #include <winbase.h>
29 #include <wchar.h>
30 #include <string.h>
31 #include <stdlib.h>
32 #include <malloc.h>
33 #include <sys/types.h>
34 #include <sys/stat.h>
35 #include <errno.h>
36
37 /* Indicates that d_type field is available in dirent structure */
38 #define _DIRENT_HAVE_D_TYPE
39
40 /* Indicates that d_namlen field is available in dirent structure */
41 #define _DIRENT_HAVE_D_NAMLEN
42
43 /* Entries missing from MSVC 6.0 */
44 #if !defined(FILE_ATTRIBUTE_DEVICE)
45 # define FILE_ATTRIBUTE_DEVICE 0x40
46 #endif
47
48 /* File type and permission flags for stat(), general mask */
49 #if !defined(S_IFMT)
50 # define S_IFMT _S_IFMT
51 #endif
52
53 /* Directory bit */
54 #if !defined(S_IFDIR)
55 # define S_IFDIR _S_IFDIR
56 #endif
57
58 /* Character device bit */
59 #if !defined(S_IFCHR)
60 # define S_IFCHR _S_IFCHR
61 #endif
62
63 /* Pipe bit */
64 #if !defined(S_IFFIFO)
65 # define S_IFFIFO _S_IFFIFO
66 #endif
67
68 /* Regular file bit */
69 #if !defined(S_IFREG)
70 # define S_IFREG _S_IFREG
71 #endif
72
73 /* Read permission */
74 #if !defined(S_IREAD)
75 # define S_IREAD _S_IREAD
76 #endif
77
78 /* Write permission */
79 #if !defined(S_IWRITE)
80 # define S_IWRITE _S_IWRITE
81 #endif
82
83 /* Execute permission */
84 #if !defined(S_IEXEC)
85 # define S_IEXEC _S_IEXEC
86 #endif
87
88 /* Pipe */
89 #if !defined(S_IFIFO)
90 # define S_IFIFO _S_IFIFO
91 #endif
92
93 /* Block device */
94 #if !defined(S_IFBLK)
95 # define S_IFBLK 0
96 #endif
97
98 /* Link */
99 #if !defined(S_IFLNK)
100 # define S_IFLNK 0
101 #endif
102
103 /* Socket */
104 #if !defined(S_IFSOCK)
105 # define S_IFSOCK 0
106 #endif
107
108 /* Read user permission */
109 #if !defined(S_IRUSR)
110 # define S_IRUSR S_IREAD
111 #endif
112
113 /* Write user permission */
114 #if !defined(S_IWUSR)
115 # define S_IWUSR S_IWRITE
116 #endif
117
118 /* Execute user permission */
119 #if !defined(S_IXUSR)
120 # define S_IXUSR 0
121 #endif
122
123 /* Read group permission */
124 #if !defined(S_IRGRP)
125 # define S_IRGRP 0
126 #endif
127
128 /* Write group permission */
129 #if !defined(S_IWGRP)
130 # define S_IWGRP 0
131 #endif
132
133 /* Execute group permission */
134 #if !defined(S_IXGRP)
135 # define S_IXGRP 0
136 #endif
137
138 /* Read others permission */
139 #if !defined(S_IROTH)
140 # define S_IROTH 0
141 #endif
142
143 /* Write others permission */
144 #if !defined(S_IWOTH)
145 # define S_IWOTH 0
146 #endif
147
148 /* Execute others permission */
149 #if !defined(S_IXOTH)
150 # define S_IXOTH 0
151 #endif
152
153 /* Maximum length of file name */
154 #if !defined(PATH_MAX)
155 # define PATH_MAX MAX_PATH
156 #endif
157 #if !defined(FILENAME_MAX)
158 # define FILENAME_MAX MAX_PATH
159 #endif
160 #if !defined(NAME_MAX)
161 # define NAME_MAX FILENAME_MAX
162 #endif
163
164 /* File type flags for d_type */
165 #define DT_UNKNOWN 0
166 #define DT_REG S_IFREG
167 #define DT_DIR S_IFDIR
168 #define DT_FIFO S_IFIFO
169 #define DT_SOCK S_IFSOCK
170 #define DT_CHR S_IFCHR
171 #define DT_BLK S_IFBLK
172 #define DT_LNK S_IFLNK
173
174 /* Macros for converting between st_mode and d_type */
175 #define IFTODT(mode) ((mode) & S_IFMT)
176 #define DTTOIF(type) (type)
177
178 /*
179 * File type macros. Note that block devices, sockets and links cannot be
180 * distinguished on Windows and the macros S_ISBLK, S_ISSOCK and S_ISLNK are
181 * only defined for compatibility. These macros should always return false
182 * on Windows.
183 */
184 #if !defined(S_ISFIFO)
185 # define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)
186 #endif
187 #if !defined(S_ISDIR)
188 # define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
189 #endif
190 #if !defined(S_ISREG)
191 # define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
192 #endif
193 #if !defined(S_ISLNK)
194 # define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
195 #endif
196 #if !defined(S_ISSOCK)
197 # define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
198 #endif
199 #if !defined(S_ISCHR)
200 # define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)
201 #endif
202 #if !defined(S_ISBLK)
203 # define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)
204 #endif
205
206 /* Return the exact length of d_namlen without zero terminator */
207 #define _D_EXACT_NAMLEN(p) ((p)->d_namlen)
208
209 /* Return number of bytes needed to store d_namlen */
210 #define _D_ALLOC_NAMLEN(p) (PATH_MAX)
211
212
213 #ifdef __cplusplus
214 extern "C" {
215 #endif
216
217
218 /* Wide-character version */
219 struct _wdirent {
220 /* Always zero */
221 long d_ino;
222
223 /* Structure size */
224 unsigned short d_reclen;
225
226 /* Length of name without \0 */
227 size_t d_namlen;
228
229 /* File type */
230 int d_type;
231
232 /* File name */
233 wchar_t d_name[PATH_MAX];
234 };
235 typedef struct _wdirent _wdirent;
236
237 struct _WDIR {
238 /* Current directory entry */
239 struct _wdirent ent;
240
241 /* Private file data */
242 WIN32_FIND_DATAW data;
243
244 /* True if data is valid */
245 int cached;
246
247 /* Win32 search handle */
248 HANDLE handle;
249
250 /* Initial directory name */
251 wchar_t *patt;
252 };
253 typedef struct _WDIR _WDIR;
254
255 static _WDIR *_wopendir (const wchar_t *dirname);
256 static struct _wdirent *_wreaddir (_WDIR *dirp);
257 static int _wclosedir (_WDIR *dirp);
258 static void _wrewinddir (_WDIR* dirp);
259
260
261 /* For compatibility with Symbian */
262 #define wdirent _wdirent
263 #define WDIR _WDIR
264 #define wopendir _wopendir
265 #define wreaddir _wreaddir
266 #define wclosedir _wclosedir
267 #define wrewinddir _wrewinddir
268
269
270 /* Multi-byte character versions */
271 struct dirent {
272 /* Always zero */
273 long d_ino;
274
275 /* Structure size */
276 unsigned short d_reclen;
277
278 /* Length of name without \0 */
279 size_t d_namlen;
280
281 /* File type */
282 int d_type;
283
284 /* File name */
285 char d_name[PATH_MAX];
286 };
287 typedef struct dirent dirent;
288
289 struct DIR {
290 struct dirent ent;
291 struct _WDIR *wdirp;
292 };
293 typedef struct DIR DIR;
294
295 static DIR *opendir (const char *dirname);
296 static struct dirent *readdir (DIR *dirp);
297 static int closedir (DIR *dirp);
298 static void rewinddir (DIR* dirp);
299
300
301 /* Internal utility functions */
302 static WIN32_FIND_DATAW *dirent_first (_WDIR *dirp);
303 static WIN32_FIND_DATAW *dirent_next (_WDIR *dirp);
304
305 static int dirent_mbstowcs_s(
306 size_t *pReturnValue,
307 wchar_t *wcstr,
308 size_t sizeInWords,
309 const char *mbstr,
310 size_t count);
311
312 static int dirent_wcstombs_s(
313 size_t *pReturnValue,
314 char *mbstr,
315 size_t sizeInBytes,
316 const wchar_t *wcstr,
317 size_t count);
318
319 static void dirent_set_errno (int error);
320
321 /*
322 * Open directory stream DIRNAME for read and return a pointer to the
323 * internal working area that is used to retrieve individual directory
324 * entries.
325 */
326 static _WDIR*
_wopendir(const wchar_t * dirname)327 _wopendir(
328 const wchar_t *dirname)
329 {
330 _WDIR *dirp = NULL;
331 int error;
332
333 /* Must have directory name */
334 if (dirname == NULL || dirname[0] == '\0') {
335 dirent_set_errno (ENOENT);
336 return NULL;
337 }
338
339 /* Allocate new _WDIR structure */
340 dirp = (_WDIR*) malloc (sizeof (struct _WDIR));
341 if (dirp != NULL) {
342 DWORD n;
343
344 /* Reset _WDIR structure */
345 dirp->handle = INVALID_HANDLE_VALUE;
346 dirp->patt = NULL;
347 dirp->cached = 0;
348
349 /* Compute the length of full path plus zero terminator */
350 n = GetFullPathNameW (dirname, 0, NULL, NULL);
351
352 /* Allocate room for absolute directory name and search pattern */
353 dirp->patt = (wchar_t*) malloc (sizeof (wchar_t) * n + 16);
354 if (dirp->patt) {
355
356 /*
357 * Convert relative directory name to an absolute one. This
358 * allows rewinddir() to function correctly even when current
359 * working directory is changed between opendir() and rewinddir().
360 */
361 n = GetFullPathNameW (dirname, n, dirp->patt, NULL);
362 if (n > 0) {
363 wchar_t *p;
364
365 /* Append search pattern \* to the directory name */
366 p = dirp->patt + n;
367 if (dirp->patt < p) {
368 switch (p[-1]) {
369 case '\\':
370 case '/':
371 case ':':
372 /* Directory ends in path separator, e.g. c:\temp\ */
373 /*NOP*/;
374 break;
375
376 default:
377 /* Directory name doesn't end in path separator */
378 *p++ = '\\';
379 }
380 }
381 *p++ = '*';
382 *p = '\0';
383
384 /* Open directory stream and retrieve the first entry */
385 if (dirent_first (dirp)) {
386 /* Directory stream opened successfully */
387 error = 0;
388 } else {
389 /* Cannot retrieve first entry */
390 error = 1;
391 dirent_set_errno (ENOENT);
392 }
393
394 } else {
395 /* Cannot retrieve full path name */
396 dirent_set_errno (ENOENT);
397 error = 1;
398 }
399
400 } else {
401 /* Cannot allocate memory for search pattern */
402 error = 1;
403 }
404
405 } else {
406 /* Cannot allocate _WDIR structure */
407 error = 1;
408 }
409
410 /* Clean up in case of error */
411 if (error && dirp) {
412 _wclosedir (dirp);
413 dirp = NULL;
414 }
415
416 return dirp;
417 }
418
419 /*
420 * Read next directory entry. The directory entry is returned in dirent
421 * structure in the d_name field. Individual directory entries returned by
422 * this function include regular files, sub-directories, pseudo-directories
423 * "." and ".." as well as volume labels, hidden files and system files.
424 */
425 static struct _wdirent*
_wreaddir(_WDIR * dirp)426 _wreaddir(
427 _WDIR *dirp)
428 {
429 WIN32_FIND_DATAW *datap;
430 struct _wdirent *entp;
431
432 /* Read next directory entry */
433 datap = dirent_next (dirp);
434 if (datap) {
435 size_t n;
436 DWORD attr;
437
438 /* Pointer to directory entry to return */
439 entp = &dirp->ent;
440
441 /*
442 * Copy file name as wide-character string. If the file name is too
443 * long to fit in to the destination buffer, then truncate file name
444 * to PATH_MAX characters and zero-terminate the buffer.
445 */
446 n = 0;
447 while (n + 1 < PATH_MAX && datap->cFileName[n] != 0) {
448 entp->d_name[n] = datap->cFileName[n];
449 n++;
450 }
451 dirp->ent.d_name[n] = 0;
452
453 /* Length of file name excluding zero terminator */
454 entp->d_namlen = n;
455
456 /* File type */
457 attr = datap->dwFileAttributes;
458 if ((attr & FILE_ATTRIBUTE_DEVICE) != 0) {
459 entp->d_type = DT_CHR;
460 } else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) {
461 entp->d_type = DT_DIR;
462 } else {
463 entp->d_type = DT_REG;
464 }
465
466 /* Reset dummy fields */
467 entp->d_ino = 0;
468 entp->d_reclen = sizeof (struct _wdirent);
469
470 } else {
471
472 /* Last directory entry read */
473 entp = NULL;
474
475 }
476
477 return entp;
478 }
479
480 /*
481 * Close directory stream opened by opendir() function. This invalidates the
482 * DIR structure as well as any directory entry read previously by
483 * _wreaddir().
484 */
485 static int
_wclosedir(_WDIR * dirp)486 _wclosedir(
487 _WDIR *dirp)
488 {
489 int ok;
490 if (dirp) {
491
492 /* Release search handle */
493 if (dirp->handle != INVALID_HANDLE_VALUE) {
494 FindClose (dirp->handle);
495 dirp->handle = INVALID_HANDLE_VALUE;
496 }
497
498 /* Release search pattern */
499 if (dirp->patt) {
500 free (dirp->patt);
501 dirp->patt = NULL;
502 }
503
504 /* Release directory structure */
505 free (dirp);
506 ok = /*success*/0;
507
508 } else {
509 /* Invalid directory stream */
510 dirent_set_errno (EBADF);
511 ok = /*failure*/-1;
512 }
513 return ok;
514 }
515
516 /*
517 * Rewind directory stream such that _wreaddir() returns the very first
518 * file name again.
519 */
520 static void
_wrewinddir(_WDIR * dirp)521 _wrewinddir(
522 _WDIR* dirp)
523 {
524 if (dirp) {
525 /* Release existing search handle */
526 if (dirp->handle != INVALID_HANDLE_VALUE) {
527 FindClose (dirp->handle);
528 }
529
530 /* Open new search handle */
531 dirent_first (dirp);
532 }
533 }
534
535 /* Get first directory entry (internal) */
536 static WIN32_FIND_DATAW*
dirent_first(_WDIR * dirp)537 dirent_first(
538 _WDIR *dirp)
539 {
540 WIN32_FIND_DATAW *datap;
541
542 /* Open directory and retrieve the first entry */
543 dirp->handle = FindFirstFileW (dirp->patt, &dirp->data);
544 if (dirp->handle != INVALID_HANDLE_VALUE) {
545
546 /* a directory entry is now waiting in memory */
547 datap = &dirp->data;
548 dirp->cached = 1;
549
550 } else {
551
552 /* Failed to re-open directory: no directory entry in memory */
553 dirp->cached = 0;
554 datap = NULL;
555
556 }
557 return datap;
558 }
559
560 /* Get next directory entry (internal) */
561 static WIN32_FIND_DATAW*
dirent_next(_WDIR * dirp)562 dirent_next(
563 _WDIR *dirp)
564 {
565 WIN32_FIND_DATAW *p;
566
567 /* Get next directory entry */
568 if (dirp->cached != 0) {
569
570 /* A valid directory entry already in memory */
571 p = &dirp->data;
572 dirp->cached = 0;
573
574 } else if (dirp->handle != INVALID_HANDLE_VALUE) {
575
576 /* Get the next directory entry from stream */
577 if (FindNextFileW (dirp->handle, &dirp->data) != FALSE) {
578 /* Got a file */
579 p = &dirp->data;
580 } else {
581 /* The very last entry has been processed or an error occured */
582 FindClose (dirp->handle);
583 dirp->handle = INVALID_HANDLE_VALUE;
584 p = NULL;
585 }
586
587 } else {
588
589 /* End of directory stream reached */
590 p = NULL;
591
592 }
593
594 return p;
595 }
596
597 /*
598 * Open directory stream using plain old C-string.
599 */
600 static DIR*
opendir(const char * dirname)601 opendir(
602 const char *dirname)
603 {
604 struct DIR *dirp;
605 int error;
606
607 /* Must have directory name */
608 if (dirname == NULL || dirname[0] == '\0') {
609 dirent_set_errno (ENOENT);
610 return NULL;
611 }
612
613 /* Allocate memory for DIR structure */
614 dirp = (DIR*) malloc (sizeof (struct DIR));
615 if (dirp) {
616 wchar_t wname[PATH_MAX];
617 size_t n;
618
619 /* Convert directory name to wide-character string */
620 error = dirent_mbstowcs_s (&n, wname, PATH_MAX, dirname, PATH_MAX);
621 if (!error) {
622
623 /* Open directory stream using wide-character name */
624 dirp->wdirp = _wopendir (wname);
625 if (dirp->wdirp) {
626 /* Directory stream opened */
627 error = 0;
628 } else {
629 /* Failed to open directory stream */
630 error = 1;
631 }
632
633 } else {
634 /*
635 * Cannot convert file name to wide-character string. This
636 * occurs if the string contains invalid multi-byte sequences or
637 * the output buffer is too small to contain the resulting
638 * string.
639 */
640 error = 1;
641 }
642
643 } else {
644 /* Cannot allocate DIR structure */
645 error = 1;
646 }
647
648 /* Clean up in case of error */
649 if (error && dirp) {
650 free (dirp);
651 dirp = NULL;
652 }
653
654 return dirp;
655 }
656
657 /*
658 * Read next directory entry.
659 *
660 * When working with text consoles, please note that file names returned by
661 * readdir() are represented in the default ANSI code page while any output to
662 * console is typically formatted on another code page. Thus, non-ASCII
663 * characters in file names will not usually display correctly on console. The
664 * problem can be fixed in two ways: (1) change the character set of console
665 * to 1252 using chcp utility and use Lucida Console font, or (2) use
666 * _cprintf function when writing to console. The _cprinf() will re-encode
667 * ANSI strings to the console code page so many non-ASCII characters will
668 * display correcly.
669 */
670 static struct dirent*
readdir(DIR * dirp)671 readdir(
672 DIR *dirp)
673 {
674 WIN32_FIND_DATAW *datap;
675 struct dirent *entp;
676
677 /* Read next directory entry */
678 datap = dirent_next (dirp->wdirp);
679 if (datap) {
680 size_t n;
681 int error;
682
683 /* Attempt to convert file name to multi-byte string */
684 error = dirent_wcstombs_s(
685 &n, dirp->ent.d_name, PATH_MAX, datap->cFileName, PATH_MAX);
686
687 /*
688 * If the file name cannot be represented by a multi-byte string,
689 * then attempt to use old 8+3 file name. This allows traditional
690 * Unix-code to access some file names despite of unicode
691 * characters, although file names may seem unfamiliar to the user.
692 *
693 * Be ware that the code below cannot come up with a short file
694 * name unless the file system provides one. At least
695 * VirtualBox shared folders fail to do this.
696 */
697 if (error && datap->cAlternateFileName[0] != '\0') {
698 error = dirent_wcstombs_s(
699 &n, dirp->ent.d_name, PATH_MAX,
700 datap->cAlternateFileName, PATH_MAX);
701 }
702
703 if (!error) {
704 DWORD attr;
705
706 /* Initialize directory entry for return */
707 entp = &dirp->ent;
708
709 /* Length of file name excluding zero terminator */
710 entp->d_namlen = n - 1;
711
712 /* File attributes */
713 attr = datap->dwFileAttributes;
714 if ((attr & FILE_ATTRIBUTE_DEVICE) != 0) {
715 entp->d_type = DT_CHR;
716 } else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) {
717 entp->d_type = DT_DIR;
718 } else {
719 entp->d_type = DT_REG;
720 }
721
722 /* Reset dummy fields */
723 entp->d_ino = 0;
724 entp->d_reclen = sizeof (struct dirent);
725
726 } else {
727 /*
728 * Cannot convert file name to multi-byte string so construct
729 * an errornous directory entry and return that. Note that
730 * we cannot return NULL as that would stop the processing
731 * of directory entries completely.
732 */
733 entp = &dirp->ent;
734 entp->d_name[0] = '?';
735 entp->d_name[1] = '\0';
736 entp->d_namlen = 1;
737 entp->d_type = DT_UNKNOWN;
738 entp->d_ino = 0;
739 entp->d_reclen = 0;
740 }
741
742 } else {
743 /* No more directory entries */
744 entp = NULL;
745 }
746
747 return entp;
748 }
749
750 /*
751 * Close directory stream.
752 */
753 static int
closedir(DIR * dirp)754 closedir(
755 DIR *dirp)
756 {
757 int ok;
758 if (dirp) {
759
760 /* Close wide-character directory stream */
761 ok = _wclosedir (dirp->wdirp);
762 dirp->wdirp = NULL;
763
764 /* Release multi-byte character version */
765 free (dirp);
766
767 } else {
768
769 /* Invalid directory stream */
770 dirent_set_errno (EBADF);
771 ok = /*failure*/-1;
772
773 }
774 return ok;
775 }
776
777 /*
778 * Rewind directory stream to beginning.
779 */
780 static void
rewinddir(DIR * dirp)781 rewinddir(
782 DIR* dirp)
783 {
784 /* Rewind wide-character string directory stream */
785 _wrewinddir (dirp->wdirp);
786 }
787
788 /* Convert multi-byte string to wide character string */
789 static int
dirent_mbstowcs_s(size_t * pReturnValue,wchar_t * wcstr,size_t sizeInWords,const char * mbstr,size_t count)790 dirent_mbstowcs_s(
791 size_t *pReturnValue,
792 wchar_t *wcstr,
793 size_t sizeInWords,
794 const char *mbstr,
795 size_t count)
796 {
797 int error;
798
799 #if defined(_MSC_VER) && _MSC_VER >= 1400
800
801 /* Microsoft Visual Studio 2005 or later */
802 error = mbstowcs_s (pReturnValue, wcstr, sizeInWords, mbstr, count);
803
804 #else
805
806 /* Older Visual Studio or non-Microsoft compiler */
807 size_t n;
808
809 /* Convert to wide-character string (or count characters) */
810 n = mbstowcs (wcstr, mbstr, sizeInWords);
811 if (!wcstr || n < count) {
812
813 /* Zero-terminate output buffer */
814 if (wcstr && sizeInWords) {
815 if (n >= sizeInWords) {
816 n = sizeInWords - 1;
817 }
818 wcstr[n] = 0;
819 }
820
821 /* Length of resuting multi-byte string WITH zero terminator */
822 if (pReturnValue) {
823 *pReturnValue = n + 1;
824 }
825
826 /* Success */
827 error = 0;
828
829 } else {
830
831 /* Could not convert string */
832 error = 1;
833
834 }
835
836 #endif
837
838 return error;
839 }
840
841 /* Convert wide-character string to multi-byte string */
842 static int
dirent_wcstombs_s(size_t * pReturnValue,char * mbstr,size_t sizeInBytes,const wchar_t * wcstr,size_t count)843 dirent_wcstombs_s(
844 size_t *pReturnValue,
845 char *mbstr,
846 size_t sizeInBytes, /* max size of mbstr */
847 const wchar_t *wcstr,
848 size_t count)
849 {
850 int error;
851
852 #if defined(_MSC_VER) && _MSC_VER >= 1400
853
854 /* Microsoft Visual Studio 2005 or later */
855 error = wcstombs_s (pReturnValue, mbstr, sizeInBytes, wcstr, count);
856
857 #else
858
859 /* Older Visual Studio or non-Microsoft compiler */
860 size_t n;
861
862 /* Convert to multi-byte string (or count the number of bytes needed) */
863 n = wcstombs (mbstr, wcstr, sizeInBytes);
864 if (!mbstr || n < count) {
865
866 /* Zero-terminate output buffer */
867 if (mbstr && sizeInBytes) {
868 if (n >= sizeInBytes) {
869 n = sizeInBytes - 1;
870 }
871 mbstr[n] = '\0';
872 }
873
874 /* Lenght of resulting multi-bytes string WITH zero-terminator */
875 if (pReturnValue) {
876 *pReturnValue = n + 1;
877 }
878
879 /* Success */
880 error = 0;
881
882 } else {
883
884 /* Cannot convert string */
885 error = 1;
886
887 }
888
889 #endif
890
891 return error;
892 }
893
894 /* Set errno variable */
895 static void
dirent_set_errno(int error)896 dirent_set_errno(
897 int error)
898 {
899 #if defined(_MSC_VER) && _MSC_VER >= 1400
900
901 /* Microsoft Visual Studio 2005 and later */
902 _set_errno (error);
903
904 #else
905
906 /* Non-Microsoft compiler or older Microsoft compiler */
907 errno = error;
908
909 #endif
910 }
911
912
913 #ifdef __cplusplus
914 }
915 #endif
916 #endif /*DIRENT_H*/
917
918