1 #include "general.h"
2
3 #if defined (HAVE_DIRENT_H)
4
5 #include <dirent.h>
6
7 #elif defined (_MSC_VER)
8 /*
9 * Taken from
10 * https://github.com/tronkko/dirent/blob/master/include/dirent.h
11 *
12 * - s/malloc/eMalloc/
13 * - s/free/eFree/
14 */
15
16 /*
17 * Dirent interface for Microsoft Visual Studio
18 * Version 1.21
19 *
20 * Copyright (C) 2006-2012 Toni Ronkko
21 * This file is part of dirent. Dirent may be freely distributed
22 * under the MIT license. For all details and documentation, see
23 * https://github.com/tronkko/dirent
24 */
25 #ifndef DIRENT_H
26 #define DIRENT_H
27
28 /*
29 * Include windows.h without Windows Sockets 1.1 to prevent conflicts with
30 * Windows Sockets 2.0.
31 */
32 #ifndef WIN32_LEAN_AND_MEAN
33 # define WIN32_LEAN_AND_MEAN
34 #endif
35 #include <windows.h>
36
37 #include <stdio.h>
38 #include <stdarg.h>
39 #include <wchar.h>
40 #include <string.h>
41 #include <stdlib.h>
42 #include <malloc.h>
43 #include <sys/types.h>
44 #include <sys/stat.h>
45 #include <errno.h>
46
47 /* Indicates that d_type field is available in dirent structure */
48 #define _DIRENT_HAVE_D_TYPE
49
50 /* Indicates that d_namlen field is available in dirent structure */
51 #define _DIRENT_HAVE_D_NAMLEN
52
53 /* Entries missing from MSVC 6.0 */
54 #if !defined(FILE_ATTRIBUTE_DEVICE)
55 # define FILE_ATTRIBUTE_DEVICE 0x40
56 #endif
57
58 /* File type and permission flags for stat(), general mask */
59 #if !defined(S_IFMT)
60 # define S_IFMT _S_IFMT
61 #endif
62
63 /* Directory bit */
64 #if !defined(S_IFDIR)
65 # define S_IFDIR _S_IFDIR
66 #endif
67
68 /* Character device bit */
69 #if !defined(S_IFCHR)
70 # define S_IFCHR _S_IFCHR
71 #endif
72
73 /* Pipe bit */
74 #if !defined(S_IFFIFO)
75 # define S_IFFIFO _S_IFFIFO
76 #endif
77
78 /* Regular file bit */
79 #if !defined(S_IFREG)
80 # define S_IFREG _S_IFREG
81 #endif
82
83 /* Read permission */
84 #if !defined(S_IREAD)
85 # define S_IREAD _S_IREAD
86 #endif
87
88 /* Write permission */
89 #if !defined(S_IWRITE)
90 # define S_IWRITE _S_IWRITE
91 #endif
92
93 /* Execute permission */
94 #if !defined(S_IEXEC)
95 # define S_IEXEC _S_IEXEC
96 #endif
97
98 /* Pipe */
99 #if !defined(S_IFIFO)
100 # define S_IFIFO _S_IFIFO
101 #endif
102
103 /* Block device */
104 #if !defined(S_IFBLK)
105 # define S_IFBLK 0
106 #endif
107
108 /* Link */
109 #if !defined(S_IFLNK)
110 # define S_IFLNK 0
111 #endif
112
113 /* Socket */
114 #if !defined(S_IFSOCK)
115 # define S_IFSOCK 0
116 #endif
117
118 /* Read user permission */
119 #if !defined(S_IRUSR)
120 # define S_IRUSR S_IREAD
121 #endif
122
123 /* Write user permission */
124 #if !defined(S_IWUSR)
125 # define S_IWUSR S_IWRITE
126 #endif
127
128 /* Execute user permission */
129 #if !defined(S_IXUSR)
130 # define S_IXUSR 0
131 #endif
132
133 /* Read group permission */
134 #if !defined(S_IRGRP)
135 # define S_IRGRP 0
136 #endif
137
138 /* Write group permission */
139 #if !defined(S_IWGRP)
140 # define S_IWGRP 0
141 #endif
142
143 /* Execute group permission */
144 #if !defined(S_IXGRP)
145 # define S_IXGRP 0
146 #endif
147
148 /* Read others permission */
149 #if !defined(S_IROTH)
150 # define S_IROTH 0
151 #endif
152
153 /* Write others permission */
154 #if !defined(S_IWOTH)
155 # define S_IWOTH 0
156 #endif
157
158 /* Execute others permission */
159 #if !defined(S_IXOTH)
160 # define S_IXOTH 0
161 #endif
162
163 /* Maximum length of file name */
164 #if !defined(PATH_MAX)
165 # define PATH_MAX MAX_PATH
166 #endif
167 #if !defined(FILENAME_MAX)
168 # define FILENAME_MAX MAX_PATH
169 #endif
170 #if !defined(NAME_MAX)
171 # define NAME_MAX FILENAME_MAX
172 #endif
173
174 /* File type flags for d_type */
175 #define DT_UNKNOWN 0
176 #define DT_REG S_IFREG
177 #define DT_DIR S_IFDIR
178 #define DT_FIFO S_IFIFO
179 #define DT_SOCK S_IFSOCK
180 #define DT_CHR S_IFCHR
181 #define DT_BLK S_IFBLK
182 #define DT_LNK S_IFLNK
183
184 /* Macros for converting between st_mode and d_type */
185 #define IFTODT(mode) ((mode) & S_IFMT)
186 #define DTTOIF(type) (type)
187
188 /*
189 * File type macros. Note that block devices, sockets and links cannot be
190 * distinguished on Windows and the macros S_ISBLK, S_ISSOCK and S_ISLNK are
191 * only defined for compatibility. These macros should always return false
192 * on Windows.
193 */
194 #if !defined(S_ISFIFO)
195 # define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)
196 #endif
197 #if !defined(S_ISDIR)
198 # define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
199 #endif
200 #if !defined(S_ISREG)
201 # define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
202 #endif
203 #if !defined(S_ISLNK)
204 # define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
205 #endif
206 #if !defined(S_ISSOCK)
207 # define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
208 #endif
209 #if !defined(S_ISCHR)
210 # define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)
211 #endif
212 #if !defined(S_ISBLK)
213 # define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)
214 #endif
215
216 /* Return the exact length of d_namlen without zero terminator */
217 #define _D_EXACT_NAMLEN(p) ((p)->d_namlen)
218
219 /* Return number of bytes needed to store d_namlen */
220 #define _D_ALLOC_NAMLEN(p) (PATH_MAX)
221
222
223 #ifdef __cplusplus
224 extern "C" {
225 #endif
226
227
228 /* Wide-character version */
229 struct _wdirent {
230 /* Always zero */
231 long d_ino;
232
233 /* Structure size */
234 unsigned short d_reclen;
235
236 /* Length of name without \0 */
237 size_t d_namlen;
238
239 /* File type */
240 int d_type;
241
242 /* File name */
243 wchar_t d_name[PATH_MAX];
244 };
245 typedef struct _wdirent _wdirent;
246
247 struct _WDIR {
248 /* Current directory entry */
249 struct _wdirent ent;
250
251 /* Private file data */
252 WIN32_FIND_DATAW data;
253
254 /* True if data is valid */
255 int cached;
256
257 /* Win32 search handle */
258 HANDLE handle;
259
260 /* Initial directory name */
261 wchar_t *patt;
262 };
263 typedef struct _WDIR _WDIR;
264
265 static _WDIR *_wopendir (const wchar_t *dirname);
266 static struct _wdirent *_wreaddir (_WDIR *dirp);
267 static int _wclosedir (_WDIR *dirp);
268 static void _wrewinddir (_WDIR* dirp);
269
270
271 /* For compatibility with Symbian */
272 #define wdirent _wdirent
273 #define WDIR _WDIR
274 #define wopendir _wopendir
275 #define wreaddir _wreaddir
276 #define wclosedir _wclosedir
277 #define wrewinddir _wrewinddir
278
279
280 /* Multi-byte character versions */
281 struct dirent {
282 /* Always zero */
283 long d_ino;
284
285 /* Structure size */
286 unsigned short d_reclen;
287
288 /* Length of name without \0 */
289 size_t d_namlen;
290
291 /* File type */
292 int d_type;
293
294 /* File name */
295 char d_name[PATH_MAX];
296 };
297 typedef struct dirent dirent;
298
299 struct DIR {
300 struct dirent ent;
301 struct _WDIR *wdirp;
302 };
303 typedef struct DIR DIR;
304
305 static DIR *opendir (const char *dirname);
306 static struct dirent *readdir (DIR *dirp);
307 static int closedir (DIR *dirp);
308 static void rewinddir (DIR* dirp);
309
310
311 /* Internal utility functions */
312 static WIN32_FIND_DATAW *dirent_first (_WDIR *dirp);
313 static WIN32_FIND_DATAW *dirent_next (_WDIR *dirp);
314
315 static int dirent_mbstowcs_s(
316 size_t *pReturnValue,
317 wchar_t *wcstr,
318 size_t sizeInWords,
319 const char *mbstr,
320 size_t count);
321
322 static int dirent_wcstombs_s(
323 size_t *pReturnValue,
324 char *mbstr,
325 size_t sizeInBytes,
326 const wchar_t *wcstr,
327 size_t count);
328
329 static void dirent_set_errno (int error);
330
331 /*
332 * Open directory stream DIRNAME for read and return a pointer to the
333 * internal working area that is used to retrieve individual directory
334 * entries.
335 */
336 static _WDIR*
_wopendir(const wchar_t * dirname)337 _wopendir(
338 const wchar_t *dirname)
339 {
340 _WDIR *dirp = NULL;
341 int error;
342
343 /* Must have directory name */
344 if (dirname == NULL || dirname[0] == '\0') {
345 dirent_set_errno (ENOENT);
346 return NULL;
347 }
348
349 /* Allocate new _WDIR structure */
350 dirp = (_WDIR*) eMalloc (sizeof (struct _WDIR));
351 if (dirp != NULL) {
352 DWORD n;
353
354 /* Reset _WDIR structure */
355 dirp->handle = INVALID_HANDLE_VALUE;
356 dirp->patt = NULL;
357 dirp->cached = 0;
358
359 /* Compute the length of full path plus zero terminator
360 *
361 * Note that on WinRT there's no way to convert relative paths
362 * into absolute paths, so just assume its an absolute path.
363 */
364 # if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)
365 n = wcslen(dirname);
366 # else
367 n = GetFullPathNameW (dirname, 0, NULL, NULL);
368 # endif
369
370 /* Allocate room for absolute directory name and search pattern */
371 dirp->patt = (wchar_t*) eMalloc (sizeof (wchar_t) * n + 16);
372 if (dirp->patt) {
373
374 /*
375 * Convert relative directory name to an absolute one. This
376 * allows rewinddir() to function correctly even when current
377 * working directory is changed between opendir() and rewinddir().
378 *
379 * Note that on WinRT there's no way to convert relative paths
380 * into absolute paths, so just assume its an absolute path.
381 */
382 # if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)
383 wcsncpy_s(dirp->patt, n+1, dirname, n);
384 # else
385 n = GetFullPathNameW (dirname, n, dirp->patt, NULL);
386 # endif
387 if (n > 0) {
388 wchar_t *p;
389
390 /* Append search pattern \* to the directory name */
391 p = dirp->patt + n;
392 if (dirp->patt < p) {
393 switch (p[-1]) {
394 case '\\':
395 case '/':
396 case ':':
397 /* Directory ends in path separator, e.g. c:\temp\ */
398 /*NOP*/;
399 break;
400
401 default:
402 /* Directory name doesn't end in path separator */
403 *p++ = '\\';
404 }
405 }
406 *p++ = '*';
407 *p = '\0';
408
409 /* Open directory stream and retrieve the first entry */
410 if (dirent_first (dirp)) {
411 /* Directory stream opened successfully */
412 error = 0;
413 } else {
414 /* Cannot retrieve first entry */
415 error = 1;
416 dirent_set_errno (ENOENT);
417 }
418
419 } else {
420 /* Cannot retrieve full path name */
421 dirent_set_errno (ENOENT);
422 error = 1;
423 }
424
425 } else {
426 /* Cannot allocate memory for search pattern */
427 error = 1;
428 }
429
430 } else {
431 /* Cannot allocate _WDIR structure */
432 error = 1;
433 }
434
435 /* Clean up in case of error */
436 if (error && dirp) {
437 _wclosedir (dirp);
438 dirp = NULL;
439 }
440
441 return dirp;
442 }
443
444 /*
445 * Read next directory entry. The directory entry is returned in dirent
446 * structure in the d_name field. Individual directory entries returned by
447 * this function include regular files, sub-directories, pseudo-directories
448 * "." and ".." as well as volume labels, hidden files and system files.
449 */
450 static struct _wdirent*
_wreaddir(_WDIR * dirp)451 _wreaddir(
452 _WDIR *dirp)
453 {
454 WIN32_FIND_DATAW *datap;
455 struct _wdirent *entp;
456
457 /* Read next directory entry */
458 datap = dirent_next (dirp);
459 if (datap) {
460 size_t n;
461 DWORD attr;
462
463 /* Pointer to directory entry to return */
464 entp = &dirp->ent;
465
466 /*
467 * Copy file name as wide-character string. If the file name is too
468 * long to fit in to the destination buffer, then truncate file name
469 * to PATH_MAX characters and zero-terminate the buffer.
470 */
471 n = 0;
472 while (n + 1 < PATH_MAX && datap->cFileName[n] != 0) {
473 entp->d_name[n] = datap->cFileName[n];
474 n++;
475 }
476 dirp->ent.d_name[n] = 0;
477
478 /* Length of file name excluding zero terminator */
479 entp->d_namlen = n;
480
481 /* File type */
482 attr = datap->dwFileAttributes;
483 if ((attr & FILE_ATTRIBUTE_DEVICE) != 0) {
484 entp->d_type = DT_CHR;
485 } else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) {
486 entp->d_type = DT_DIR;
487 } else {
488 entp->d_type = DT_REG;
489 }
490
491 /* Reset dummy fields */
492 entp->d_ino = 0;
493 entp->d_reclen = sizeof (struct _wdirent);
494
495 } else {
496
497 /* Last directory entry read */
498 entp = NULL;
499
500 }
501
502 return entp;
503 }
504
505 /*
506 * Close directory stream opened by opendir() function. This invalidates the
507 * DIR structure as well as any directory entry read previously by
508 * _wreaddir().
509 */
510 static int
_wclosedir(_WDIR * dirp)511 _wclosedir(
512 _WDIR *dirp)
513 {
514 int ok;
515 if (dirp) {
516
517 /* Release search handle */
518 if (dirp->handle != INVALID_HANDLE_VALUE) {
519 FindClose (dirp->handle);
520 dirp->handle = INVALID_HANDLE_VALUE;
521 }
522
523 /* Release search pattern */
524 if (dirp->patt) {
525 eFree (dirp->patt);
526 dirp->patt = NULL;
527 }
528
529 /* Release directory structure */
530 eFree (dirp);
531 ok = /*success*/0;
532
533 } else {
534 /* Invalid directory stream */
535 dirent_set_errno (EBADF);
536 ok = /*failure*/-1;
537 }
538 return ok;
539 }
540
541 /*
542 * Rewind directory stream such that _wreaddir() returns the very first
543 * file name again.
544 */
545 static void
_wrewinddir(_WDIR * dirp)546 _wrewinddir(
547 _WDIR* dirp)
548 {
549 if (dirp) {
550 /* Release existing search handle */
551 if (dirp->handle != INVALID_HANDLE_VALUE) {
552 FindClose (dirp->handle);
553 }
554
555 /* Open new search handle */
556 dirent_first (dirp);
557 }
558 }
559
560 /* Get first directory entry (internal) */
561 static WIN32_FIND_DATAW*
dirent_first(_WDIR * dirp)562 dirent_first(
563 _WDIR *dirp)
564 {
565 WIN32_FIND_DATAW *datap;
566
567 /* Open directory and retrieve the first entry */
568 dirp->handle = FindFirstFileExW(
569 dirp->patt, FindExInfoStandard, &dirp->data,
570 FindExSearchNameMatch, NULL, 0);
571 if (dirp->handle != INVALID_HANDLE_VALUE) {
572
573 /* a directory entry is now waiting in memory */
574 datap = &dirp->data;
575 dirp->cached = 1;
576
577 } else {
578
579 /* Failed to re-open directory: no directory entry in memory */
580 dirp->cached = 0;
581 datap = NULL;
582
583 }
584 return datap;
585 }
586
587 /* Get next directory entry (internal) */
588 static WIN32_FIND_DATAW*
dirent_next(_WDIR * dirp)589 dirent_next(
590 _WDIR *dirp)
591 {
592 WIN32_FIND_DATAW *p;
593
594 /* Get next directory entry */
595 if (dirp->cached != 0) {
596
597 /* A valid directory entry already in memory */
598 p = &dirp->data;
599 dirp->cached = 0;
600
601 } else if (dirp->handle != INVALID_HANDLE_VALUE) {
602
603 /* Get the next directory entry from stream */
604 if (FindNextFileW (dirp->handle, &dirp->data) != FALSE) {
605 /* Got a file */
606 p = &dirp->data;
607 } else {
608 /* The very last entry has been processed or an error occured */
609 FindClose (dirp->handle);
610 dirp->handle = INVALID_HANDLE_VALUE;
611 p = NULL;
612 }
613
614 } else {
615
616 /* End of directory stream reached */
617 p = NULL;
618
619 }
620
621 return p;
622 }
623
624 /*
625 * Open directory stream using plain old C-string.
626 */
627 static DIR*
opendir(const char * dirname)628 opendir(
629 const char *dirname)
630 {
631 struct DIR *dirp;
632 int error;
633
634 /* Must have directory name */
635 if (dirname == NULL || dirname[0] == '\0') {
636 dirent_set_errno (ENOENT);
637 return NULL;
638 }
639
640 /* Allocate memory for DIR structure */
641 dirp = (DIR*) eMalloc (sizeof (struct DIR));
642 if (dirp) {
643 wchar_t wname[PATH_MAX];
644 size_t n;
645
646 /* Convert directory name to wide-character string */
647 error = dirent_mbstowcs_s (&n, wname, PATH_MAX, dirname, PATH_MAX);
648 if (!error) {
649
650 /* Open directory stream using wide-character name */
651 dirp->wdirp = _wopendir (wname);
652 if (dirp->wdirp) {
653 /* Directory stream opened */
654 error = 0;
655 } else {
656 /* Failed to open directory stream */
657 error = 1;
658 }
659
660 } else {
661 /*
662 * Cannot convert file name to wide-character string. This
663 * occurs if the string contains invalid multi-byte sequences or
664 * the output buffer is too small to contain the resulting
665 * string.
666 */
667 error = 1;
668 }
669
670 } else {
671 /* Cannot allocate DIR structure */
672 error = 1;
673 }
674
675 /* Clean up in case of error */
676 if (error && dirp) {
677 eFree (dirp);
678 dirp = NULL;
679 }
680
681 return dirp;
682 }
683
684 /*
685 * Read next directory entry.
686 *
687 * When working with text consoles, please note that file names returned by
688 * readdir() are represented in the default ANSI code page while any output to
689 * console is typically formatted on another code page. Thus, non-ASCII
690 * characters in file names will not usually display correctly on console. The
691 * problem can be fixed in two ways: (1) change the character set of console
692 * to 1252 using chcp utility and use Lucida Console font, or (2) use
693 * _cprintf function when writing to console. The _cprinf() will re-encode
694 * ANSI strings to the console code page so many non-ASCII characters will
695 * display correcly.
696 */
697 static struct dirent*
readdir(DIR * dirp)698 readdir(
699 DIR *dirp)
700 {
701 WIN32_FIND_DATAW *datap;
702 struct dirent *entp;
703
704 /* Read next directory entry */
705 datap = dirent_next (dirp->wdirp);
706 if (datap) {
707 size_t n;
708 int error;
709
710 /* Attempt to convert file name to multi-byte string */
711 error = dirent_wcstombs_s(
712 &n, dirp->ent.d_name, PATH_MAX, datap->cFileName, PATH_MAX);
713
714 /*
715 * If the file name cannot be represented by a multi-byte string,
716 * then attempt to use old 8+3 file name. This allows traditional
717 * Unix-code to access some file names despite of unicode
718 * characters, although file names may seem unfamiliar to the user.
719 *
720 * Be ware that the code below cannot come up with a short file
721 * name unless the file system provides one. At least
722 * VirtualBox shared folders fail to do this.
723 */
724 if (error && datap->cAlternateFileName[0] != '\0') {
725 error = dirent_wcstombs_s(
726 &n, dirp->ent.d_name, PATH_MAX,
727 datap->cAlternateFileName, PATH_MAX);
728 }
729
730 if (!error) {
731 DWORD attr;
732
733 /* Initialize directory entry for return */
734 entp = &dirp->ent;
735
736 /* Length of file name excluding zero terminator */
737 entp->d_namlen = n - 1;
738
739 /* File attributes */
740 attr = datap->dwFileAttributes;
741 if ((attr & FILE_ATTRIBUTE_DEVICE) != 0) {
742 entp->d_type = DT_CHR;
743 } else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) {
744 entp->d_type = DT_DIR;
745 } else {
746 entp->d_type = DT_REG;
747 }
748
749 /* Reset dummy fields */
750 entp->d_ino = 0;
751 entp->d_reclen = sizeof (struct dirent);
752
753 } else {
754 /*
755 * Cannot convert file name to multi-byte string so construct
756 * an erroneous directory entry and return that. Note that
757 * we cannot return NULL as that would stop the processing
758 * of directory entries completely.
759 */
760 entp = &dirp->ent;
761 entp->d_name[0] = '?';
762 entp->d_name[1] = '\0';
763 entp->d_namlen = 1;
764 entp->d_type = DT_UNKNOWN;
765 entp->d_ino = 0;
766 entp->d_reclen = 0;
767 }
768
769 } else {
770 /* No more directory entries */
771 entp = NULL;
772 }
773
774 return entp;
775 }
776
777 /*
778 * Close directory stream.
779 */
780 static int
closedir(DIR * dirp)781 closedir(
782 DIR *dirp)
783 {
784 int ok;
785 if (dirp) {
786
787 /* Close wide-character directory stream */
788 ok = _wclosedir (dirp->wdirp);
789 dirp->wdirp = NULL;
790
791 /* Release multi-byte character version */
792 eFree (dirp);
793
794 } else {
795
796 /* Invalid directory stream */
797 dirent_set_errno (EBADF);
798 ok = /*failure*/-1;
799
800 }
801 return ok;
802 }
803
804 /*
805 * Rewind directory stream to beginning.
806 */
807 static void
rewinddir(DIR * dirp)808 rewinddir(
809 DIR* dirp)
810 {
811 /* Rewind wide-character string directory stream */
812 _wrewinddir (dirp->wdirp);
813 }
814
815 /* Convert multi-byte string to wide character string */
816 static int
dirent_mbstowcs_s(size_t * pReturnValue,wchar_t * wcstr,size_t sizeInWords,const char * mbstr,size_t count)817 dirent_mbstowcs_s(
818 size_t *pReturnValue,
819 wchar_t *wcstr,
820 size_t sizeInWords,
821 const char *mbstr,
822 size_t count)
823 {
824 int error;
825
826 #if defined(_MSC_VER) && _MSC_VER >= 1400
827
828 /* Microsoft Visual Studio 2005 or later */
829 error = mbstowcs_s (pReturnValue, wcstr, sizeInWords, mbstr, count);
830
831 #else
832
833 /* Older Visual Studio or non-Microsoft compiler */
834 size_t n;
835
836 /* Convert to wide-character string (or count characters) */
837 n = mbstowcs (wcstr, mbstr, sizeInWords);
838 if (!wcstr || n < count) {
839
840 /* Zero-terminate output buffer */
841 if (wcstr && sizeInWords) {
842 if (n >= sizeInWords) {
843 n = sizeInWords - 1;
844 }
845 wcstr[n] = 0;
846 }
847
848 /* Length of resulting multi-byte string WITH zero terminator */
849 if (pReturnValue) {
850 *pReturnValue = n + 1;
851 }
852
853 /* Success */
854 error = 0;
855
856 } else {
857
858 /* Could not convert string */
859 error = 1;
860
861 }
862
863 #endif
864
865 return error;
866 }
867
868 /* Convert wide-character string to multi-byte string */
869 static int
dirent_wcstombs_s(size_t * pReturnValue,char * mbstr,size_t sizeInBytes,const wchar_t * wcstr,size_t count)870 dirent_wcstombs_s(
871 size_t *pReturnValue,
872 char *mbstr,
873 size_t sizeInBytes, /* max size of mbstr */
874 const wchar_t *wcstr,
875 size_t count)
876 {
877 int error;
878
879 #if defined(_MSC_VER) && _MSC_VER >= 1400
880
881 /* Microsoft Visual Studio 2005 or later */
882 error = wcstombs_s (pReturnValue, mbstr, sizeInBytes, wcstr, count);
883
884 #else
885
886 /* Older Visual Studio or non-Microsoft compiler */
887 size_t n;
888
889 /* Convert to multi-byte string (or count the number of bytes needed) */
890 n = wcstombs (mbstr, wcstr, sizeInBytes);
891 if (!mbstr || n < count) {
892
893 /* Zero-terminate output buffer */
894 if (mbstr && sizeInBytes) {
895 if (n >= sizeInBytes) {
896 n = sizeInBytes - 1;
897 }
898 mbstr[n] = '\0';
899 }
900
901 /* Length of resulting multi-bytes string WITH zero-terminator */
902 if (pReturnValue) {
903 *pReturnValue = n + 1;
904 }
905
906 /* Success */
907 error = 0;
908
909 } else {
910
911 /* Cannot convert string */
912 error = 1;
913
914 }
915
916 #endif
917
918 return error;
919 }
920
921 /* Set errno variable */
922 static void
dirent_set_errno(int error)923 dirent_set_errno(
924 int error)
925 {
926 #if defined(_MSC_VER) && _MSC_VER >= 1400
927
928 /* Microsoft Visual Studio 2005 and later */
929 _set_errno (error);
930
931 #else
932
933 /* Non-Microsoft compiler or older Microsoft compiler */
934 errno = error;
935
936 #endif
937 }
938
939
940 #ifdef __cplusplus
941 }
942 #endif
943 #endif /*DIRENT_H*/
944 #endif /* HAVE_DIRENT_H */
945