forked from simdjson/simdjson
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathdirent_portable.h
More file actions
1043 lines (877 loc) · 29.3 KB
/
Copy pathdirent_portable.h
File metadata and controls
1043 lines (877 loc) · 29.3 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// only use under Visual Studio and only for jsoncheck.cpp
/*
* This file was originally: "dirent for Visual C++" from: http://softagalleria.net/dirent.php (version 1.20.1)
* However I've modified it to <dirent_portable.h> by adding:
*
* a fallback to <dirent.h> if _WIN32 is not defined
* two missing methods: scandir(...) and alphasort(...)
* and some other minor modifications (see below)
*
*
* Original license from http://softagalleria.net/dirent.php
*
*========================================================================
*
* dirent.h - dirent API for Microsoft Visual Studio
*
* Copyright (C) 2006-2012 Toni Ronkko
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* ``Software''), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL TONI RONKKO BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* $Id: dirent.h,v 1.20 2014/03/19 17:52:23 tronkko Exp $
*
* =========================================================================
* Added:
* -> some undefs to prevent possible compiler warnings
* -> the scandir(...) and alphasort(...) methods
* -> the optional DIRENT_USE_ASCII_SHORT_PATHS_ON_WINDOWS definition (needed for browsing with short ASCII paths instead of long UTF8 paths).
* WARNING: in my tests the usage of the long UTF8 paths is not fully functional (patches are welcome)
* All these additions have been made to made <dirent_portable.h> usage for Windows consistent
* with what I get using <direct.h> under my Ubuntu Linux OS.
* =========================================================================
*
* The code of the scandir(...) method come from the musl library (http://www.musl-libc.org/)
* (MIT licensed, Copyright © 2005-2014 Rich Felker, et al.).
*
* The code of the alphasort(...) method and of all the other minor modifications is in the public domain.
*
*/
#if (!defined(_WIN32) && !defined(_WIN64))
# include <dirent.h>
#else // #if (!defined(_WIN32) && !defined(_WIN64))
#ifndef DIRENT_H
#define DIRENT_H
/*
* Define architecture flags so we don't need to include windows.h.
* Avoiding windows.h makes it simpler to use windows sockets in conjunction
* with dirent.h.
*/
#if !defined(_68K_) && !defined(_MPPC_) && !defined(_X86_) && !defined(_IA64_) && !defined(_AMD64_) && defined(_M_IX86)
# define _X86_
#endif
#if !defined(_68K_) && !defined(_MPPC_) && !defined(_X86_) && !defined(_IA64_) && !defined(_AMD64_) && defined(_M_AMD64)
#define _AMD64_
#endif
#include <stringapiset.h>
#include <stdio.h>
#include <stdarg.h>
#include <windef.h> // MAX_PATH is defined here,
#include <winbase.h>
#include <wchar.h>
#include <string.h>
#include <stdlib.h>
#include <malloc.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#if (!defined(SIZE_MAX) && !defined(INT_MAX))
#include <limits.h> // INT_MAX
#endif //(!defined(SIZE_MAX) && !defined(INT_MAX))
//#define DIRENT_USE_ASCII_SHORT_PATHS_ON_WINDOWS // set it globally, not just here]
/* Indicates that d_type field is available in dirent structure */
#define _DIRENT_HAVE_D_TYPE
/* Indicates that d_namlen field is available in dirent structure */
#define _DIRENT_HAVE_D_NAMLEN
/* Entries missing from MSVC 6.0 */
#if !defined(FILE_ATTRIBUTE_DEVICE)
# define FILE_ATTRIBUTE_DEVICE 0x40
#endif
/* File type and permission flags for stat() */
#if !defined(S_IFMT)
# define S_IFMT _S_IFMT /* File type mask */
#endif
#if !defined(S_IFDIR)
# define S_IFDIR _S_IFDIR /* Directory */
#endif
#if !defined(S_IFCHR)
# define S_IFCHR _S_IFCHR /* Character device */
#endif
#if !defined(S_IFFIFO)
# define S_IFFIFO _S_IFFIFO /* Pipe */
#endif
#if !defined(S_IFREG)
# define S_IFREG _S_IFREG /* Regular file */
#endif
#if !defined(S_IREAD)
# define S_IREAD _S_IREAD /* Read permission */
#endif
#if !defined(S_IWRITE)
# define S_IWRITE _S_IWRITE /* Write permission */
#endif
#if !defined(S_IEXEC)
# define S_IEXEC _S_IEXEC /* Execute permission */
#endif
#if !defined(S_IFIFO)
# define S_IFIFO _S_IFIFO /* Pipe */
#endif
#if !defined(S_IFBLK)
# define S_IFBLK 0 /* Block device */
#endif
#if !defined(S_IFLNK)
# define S_IFLNK 0 /* Link */
#endif
#if !defined(S_IFSOCK)
# define S_IFSOCK 0 /* Socket */
#endif
#if defined(_MSC_VER)
# define S_IRUSR S_IREAD /* Read user */
# define S_IWUSR S_IWRITE /* Write user */
# define S_IXUSR 0 /* Execute user */
# define S_IRGRP 0 /* Read group */
# define S_IWGRP 0 /* Write group */
# define S_IXGRP 0 /* Execute group */
# define S_IROTH 0 /* Read others */
# define S_IWOTH 0 /* Write others */
# define S_IXOTH 0 /* Execute others */
#endif
/* Maximum length of file name */
#ifndef DIRENT_MAX_PATH
# ifndef MAX_PATH
# define MAX_PATH PATH_MAX // it should be in <limits.h> AFAIK
# endif //MAX_PATH
# ifndef DIRENT_USE_ASCII_SHORT_PATHS_ON_WINDOWS // utf8 strings can have up to 4 bytes per char
# define DIRENT_MAX_PATH (MAX_PATH*4)
# else //DIRENT_USE_ASCII_SHORT_PATHS_ON_WINDOWS
# define DIRENT_MAX_PATH (MAX_PATH)
# endif //DIRENT_USE_ASCII_SHORT_PATHS_ON_WINDOWS
#endif //DIRENT_MAX_PATH
/* File type flags for d_type */
#define DT_UNKNOWN 0
#define DT_REG S_IFREG
#define DT_DIR S_IFDIR
#define DT_FIFO S_IFIFO
#define DT_SOCK S_IFSOCK
#define DT_CHR S_IFCHR
#define DT_BLK S_IFBLK
#define DT_LNK S_IFLNK
/* Macros for converting between st_mode and d_type */
#define IFTODT(mode) ((mode) & S_IFMT)
#define DTTOIF(type) (type)
/*
* File type macros. Note that block devices, sockets and links cannot be
* distinguished on Windows and the macros S_ISBLK, S_ISSOCK and S_ISLNK are
* only defined for compatibility. These macros should always return false
* on Windows.
*/
// Added some undefs to prevent possible compiler warnings
#undef S_ISFIFO
#undef S_ISDIR
#undef S_ISREG
#undef S_ISLNK
#undef S_ISSOCK
#undef S_ISSOCK
#undef S_ISCHR
#undef S_ISBLK
#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)
#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)
#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)
/* Return the exact length of d_namlen without zero terminator */
#define _D_EXACT_NAMLEN(p) ((p)->d_namlen)
/* Return number of bytes needed to store d_namlen */
#define _D_ALLOC_NAMLEN(p) (DIRENT_MAX_PATH)
#ifdef __cplusplus
extern "C" {
#endif
/* Wide-character version */
struct _wdirent {
long d_ino; /* Always zero */
unsigned short d_reclen; /* Structure size */
size_t d_namlen; /* Length of name without \0 */
int d_type; /* File type */
wchar_t d_name[DIRENT_MAX_PATH]; /* File name */
};
typedef struct _wdirent _wdirent;
struct _WDIR {
struct _wdirent ent; /* Current directory entry */
WIN32_FIND_DATAW data; /* Private file data */
int cached; /* True if data is valid */
HANDLE handle; /* Win32 search handle */
wchar_t *patt; /* Initial directory name */
};
typedef struct _WDIR _WDIR;
static _WDIR *_wopendir (const wchar_t *dirname);
static struct _wdirent *_wreaddir (_WDIR *dirp);
static int _wclosedir (_WDIR *dirp);
static void _wrewinddir (_WDIR* dirp);
/* For compatibility with Symbian */
#define wdirent _wdirent
#define WDIR _WDIR
#define wopendir _wopendir
#define wreaddir _wreaddir
#define wclosedir _wclosedir
#define wrewinddir _wrewinddir
/* Multi-byte character versions */
struct dirent {
long d_ino; /* Always zero */
unsigned short d_reclen; /* Structure size */
size_t d_namlen; /* Length of name without \0 */
int d_type; /* File type */
char d_name[DIRENT_MAX_PATH]; /* File name */
};
typedef struct dirent dirent;
struct DIR {
struct dirent ent;
struct _WDIR *wdirp;
};
typedef struct DIR DIR;
static DIR *opendir (const char *dirname);
static struct dirent *readdir (DIR *dirp);
static int closedir (DIR *dirp);
static void rewinddir (DIR* dirp);
/* Internal utility functions */
static WIN32_FIND_DATAW *dirent_first (_WDIR *dirp);
static WIN32_FIND_DATAW *dirent_next (_WDIR *dirp);
static int dirent_mbstowcs_s(
size_t *pReturnValue,
wchar_t *wcstr,
size_t sizeInWords,
const char *mbstr,
size_t count);
static int dirent_wcstombs_s(
size_t *pReturnValue,
char *mbstr,
size_t sizeInBytes,
const wchar_t *wcstr,
size_t count);
static void dirent_set_errno (int error);
/*
* Open directory stream DIRNAME for read and return a pointer to the
* internal working area that is used to retrieve individual directory
* entries.
*/
static _WDIR*
_wopendir(
const wchar_t *dirname)
{
_WDIR *dirp = NULL;
int error;
/* Must have directory name */
if (dirname == NULL || dirname[0] == '\0') {
dirent_set_errno (ENOENT);
return NULL;
}
/* Allocate new _WDIR structure */
dirp = (_WDIR*) malloc (sizeof (struct _WDIR));
if (dirp != NULL) {
DWORD n;
/* Reset _WDIR structure */
dirp->handle = INVALID_HANDLE_VALUE;
dirp->patt = NULL;
dirp->cached = 0;
/* Compute the length of full path plus zero terminator */
n = GetFullPathNameW (dirname, 0, NULL, NULL);
/* Allocate room for absolute directory name and search pattern */
dirp->patt = (wchar_t*) malloc (sizeof (wchar_t) * n + 16);
if (dirp->patt) {
/*
* Convert relative directory name to an absolute one. This
* allows rewinddir() to function correctly even when current
* working directory is changed between opendir() and rewinddir().
*/
n = GetFullPathNameW (dirname, n, dirp->patt, NULL);
if (n > 0) {
wchar_t *p;
/* Append search pattern \* to the directory name */
p = dirp->patt + n;
if (dirp->patt < p) {
switch (p[-1]) {
case '\\':
case '/':
case ':':
/* Directory ends in path separator, e.g. c:\temp\ */
/*NOP*/;
break;
default:
/* Directory name doesn't end in path separator */
*p++ = '\\';
}
}
*p++ = '*';
*p = '\0';
/* Open directory stream and retrieve the first entry */
if (dirent_first (dirp)) {
/* Directory stream opened successfully */
error = 0;
} else {
/* Cannot retrieve first entry */
error = 1;
dirent_set_errno (ENOENT);
}
} else {
/* Cannot retrieve full path name */
dirent_set_errno (ENOENT);
error = 1;
}
} else {
/* Cannot allocate memory for search pattern */
error = 1;
}
} else {
/* Cannot allocate _WDIR structure */
error = 1;
}
/* Clean up in case of error */
if (error && dirp) {
_wclosedir (dirp);
dirp = NULL;
}
return dirp;
}
/*
* Read next directory entry. The directory entry is returned in dirent
* structure in the d_name field. Individual directory entries returned by
* this function include regular files, sub-directories, pseudo-directories
* "." and ".." as well as volume labels, hidden files and system files.
*/
static struct _wdirent*
_wreaddir(
_WDIR *dirp)
{
WIN32_FIND_DATAW *datap;
struct _wdirent *entp;
/* Read next directory entry */
datap = dirent_next (dirp);
if (datap) {
size_t n;
DWORD attr;
/* Pointer to directory entry to return */
entp = &dirp->ent;
/*
* Copy file name as wide-character string. If the file name is too
* long to fit in to the destination buffer, then truncate file name
* to DIRENT_MAX_PATH characters and zero-terminate the buffer.
*/
n = 0;
while (n + 1 < DIRENT_MAX_PATH && datap->cFileName[n] != 0) {
entp->d_name[n] = datap->cFileName[n];
n++;
}
dirp->ent.d_name[n] = 0;
/* Length of file name excluding zero terminator */
entp->d_namlen = n;
/* File type */
attr = datap->dwFileAttributes;
if ((attr & FILE_ATTRIBUTE_DEVICE) != 0) {
entp->d_type = DT_CHR;
} else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) {
entp->d_type = DT_DIR;
} else {
entp->d_type = DT_REG;
}
/* Reset dummy fields */
entp->d_ino = 0;
entp->d_reclen = sizeof (struct _wdirent);
} else {
/* Last directory entry read */
entp = NULL;
}
return entp;
}
/*
* Close directory stream opened by opendir() function. This invalidates the
* DIR structure as well as any directory entry read previously by
* _wreaddir().
*/
static int
_wclosedir(
_WDIR *dirp)
{
int ok;
if (dirp) {
/* Release search handle */
if (dirp->handle != INVALID_HANDLE_VALUE) {
FindClose (dirp->handle);
dirp->handle = INVALID_HANDLE_VALUE;
}
/* Release search pattern */
if (dirp->patt) {
free (dirp->patt);
dirp->patt = NULL;
}
/* Release directory structure */
free (dirp);
ok = /*success*/0;
} else {
/* Invalid directory stream */
dirent_set_errno (EBADF);
ok = /*failure*/-1;
}
return ok;
}
/*
* Rewind directory stream such that _wreaddir() returns the very first
* file name again.
*/
static void
_wrewinddir(
_WDIR* dirp)
{
if (dirp) {
/* Release existing search handle */
if (dirp->handle != INVALID_HANDLE_VALUE) {
FindClose (dirp->handle);
}
/* Open new search handle */
dirent_first (dirp);
}
}
/* Get first directory entry (internal) */
static WIN32_FIND_DATAW*
dirent_first(
_WDIR *dirp)
{
WIN32_FIND_DATAW *datap;
/* Open directory and retrieve the first entry */
dirp->handle = FindFirstFileW (dirp->patt, &dirp->data);
if (dirp->handle != INVALID_HANDLE_VALUE) {
/* a directory entry is now waiting in memory */
datap = &dirp->data;
dirp->cached = 1;
} else {
/* Failed to re-open directory: no directory entry in memory */
dirp->cached = 0;
datap = NULL;
}
return datap;
}
/* Get next directory entry (internal) */
static WIN32_FIND_DATAW*
dirent_next(
_WDIR *dirp)
{
WIN32_FIND_DATAW *p;
/* Get next directory entry */
if (dirp->cached != 0) {
/* A valid directory entry already in memory */
p = &dirp->data;
dirp->cached = 0;
} else if (dirp->handle != INVALID_HANDLE_VALUE) {
/* Get the next directory entry from stream */
if (FindNextFileW (dirp->handle, &dirp->data) != FALSE) {
/* Got a file */
p = &dirp->data;
} else {
/* The very last entry has been processed or an error occured */
FindClose (dirp->handle);
dirp->handle = INVALID_HANDLE_VALUE;
p = NULL;
}
} else {
/* End of directory stream reached */
p = NULL;
}
return p;
}
/*
* Open directory stream using plain old C-string.
*/
static DIR*
opendir(
const char *dirname)
{
struct DIR *dirp;
int error;
/* Must have directory name */
if (dirname == NULL || dirname[0] == '\0') {
dirent_set_errno (ENOENT);
return NULL;
}
/* Allocate memory for DIR structure */
dirp = (DIR*) malloc (sizeof (struct DIR));
if (dirp) {
wchar_t wname[DIRENT_MAX_PATH];
size_t n;
/* Convert directory name to wide-character string */
error = dirent_mbstowcs_s (&n, wname, DIRENT_MAX_PATH, dirname, DIRENT_MAX_PATH);
if (!error) {
/* Open directory stream using wide-character name */
dirp->wdirp = _wopendir (wname);
if (dirp->wdirp) {
/* Directory stream opened */
error = 0;
} else {
/* Failed to open directory stream */
error = 1;
}
} else {
/*
* Cannot convert file name to wide-character string. This
* occurs if the string contains invalid multi-byte sequences or
* the output buffer is too small to contain the resulting
* string.
*/
error = 1;
}
} else {
/* Cannot allocate DIR structure */
error = 1;
}
/* Clean up in case of error */
if (error && dirp) {
free (dirp);
dirp = NULL;
}
return dirp;
}
/*
* Read next directory entry.
*
* When working with text consoles, please note that file names returned by
* readdir() are represented in the default ANSI code page while any output to
* console is typically formatted on another code page. Thus, non-ASCII
* characters in file names will not usually display correctly on console. The
* problem can be fixed in two ways: (1) change the character set of console
* to 1252 using chcp utility and use Lucida Console font, or (2) use
* _cprintf function when writing to console. The _cprinf() will re-encode
* ANSI strings to the console code page so many non-ASCII characters will
* display correcly.
*/
static struct dirent*
readdir(
DIR *dirp)
{
WIN32_FIND_DATAW *datap;
struct dirent *entp;
/* Read next directory entry */
datap = dirent_next (dirp->wdirp);
if (datap) {
size_t n;
int error;
/* Attempt to convert file name to multi-byte string */
error = dirent_wcstombs_s(
&n, dirp->ent.d_name, DIRENT_MAX_PATH, datap->cFileName, DIRENT_MAX_PATH);
/*
* If the file name cannot be represented by a multi-byte string,
* then attempt to use old 8+3 file name. This allows traditional
* Unix-code to access some file names despite of unicode
* characters, although file names may seem unfamiliar to the user.
*
* Be ware that the code below cannot come up with a short file
* name unless the file system provides one. At least
* VirtualBox shared folders fail to do this.
*/
if (error && datap->cAlternateFileName[0] != '\0') {
error = dirent_wcstombs_s(
&n, dirp->ent.d_name, DIRENT_MAX_PATH,
datap->cAlternateFileName, DIRENT_MAX_PATH);
}
if (!error) {
DWORD attr;
/* Initialize directory entry for return */
entp = &dirp->ent;
/* Length of file name excluding zero terminator */
entp->d_namlen = n - 1;
/* File attributes */
attr = datap->dwFileAttributes;
if ((attr & FILE_ATTRIBUTE_DEVICE) != 0) {
entp->d_type = DT_CHR;
} else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) {
entp->d_type = DT_DIR;
} else {
entp->d_type = DT_REG;
}
/* Reset dummy fields */
entp->d_ino = 0;
entp->d_reclen = sizeof (struct dirent);
} else {
/*
* Cannot convert file name to multi-byte string so construct
* an errornous directory entry and return that. Note that
* we cannot return NULL as that would stop the processing
* of directory entries completely.
*/
entp = &dirp->ent;
entp->d_name[0] = '?';
entp->d_name[1] = '\0';
entp->d_namlen = 1;
entp->d_type = DT_UNKNOWN;
entp->d_ino = 0;
entp->d_reclen = 0;
}
} else {
/* No more directory entries */
entp = NULL;
}
return entp;
}
/*
* Close directory stream.
*/
static int
closedir(
DIR *dirp)
{
int ok;
if (dirp) {
/* Close wide-character directory stream */
ok = _wclosedir (dirp->wdirp);
dirp->wdirp = NULL;
/* Release multi-byte character version */
free (dirp);
} else {
/* Invalid directory stream */
dirent_set_errno (EBADF);
ok = /*failure*/-1;
}
return ok;
}
/*
* Rewind directory stream to beginning.
*/
static void
rewinddir(
DIR* dirp)
{
/* Rewind wide-character string directory stream */
_wrewinddir (dirp->wdirp);
}
/* Convert multi-byte string to wide character string */
static int
dirent_mbstowcs_s(
size_t *pReturnValue,
wchar_t *wcstr,
size_t sizeInWords,
const char *mbstr,
size_t count)
{
int error;
#ifndef DIRENT_USE_ASCII_SHORT_PATHS_ON_WINDOWS
// we don't use "count" at all: we assume mstr is zero terminated:
size_t n = (size_t) MultiByteToWideChar (CP_UTF8, 0, mbstr, -1, wcstr, 0);//sizeInWords);
if (n==0) {
error = 1;
if (sizeInWords>0) wcstr[0]=L'\0';
if (pReturnValue) *pReturnValue = 0;
}
else if (n<=sizeInWords) {
error = MultiByteToWideChar (CP_UTF8, 0, mbstr, -1, wcstr, n) == 0 ? 1 : 0;
if (pReturnValue) *pReturnValue = n;
}
else {
// Buffer too low:
if (sizeInWords>0) {
if (sizeInWords>1) MultiByteToWideChar (CP_UTF8, 0, mbstr, -1, wcstr, sizeInWords-1);
wcstr[sizeInWords-1] = L'\0';
}
if (pReturnValue) *pReturnValue = sizeInWords;
error = 1;
}
/*
if (!wcstr || n < count) {
// Zero-terminate output buffer
if (wcstr && sizeInWords) {
if (n >= sizeInWords) {
n = sizeInWords - 1;
}
wcstr[n] = 0;
}
// Length of resuting multi-byte string WITH zero terminator
if (pReturnValue) {
*pReturnValue = n + 1;
}
// Success
error = 0;
} else {
// Could not convert string
error = 1;
}
*/
#else //DIRENT_USE_ASCII_SHORT_PATHS_ON_WINDOWS
#if defined(_MSC_VER) && _MSC_VER >= 1400
/* Microsoft Visual Studio 2005 or later */
error = mbstowcs_s (pReturnValue, wcstr, sizeInWords, mbstr, count);
#else
/* Older Visual Studio or non-Microsoft compiler */
size_t n;
/* Convert to wide-character string (or count characters) */
n = mbstowcs (wcstr, mbstr, sizeInWords);
if (!wcstr || n < count) {
/* Zero-terminate output buffer */
if (wcstr && sizeInWords) {
if (n >= sizeInWords) {
n = sizeInWords - 1;
}
wcstr[n] = 0;
}
/* Length of resuting multi-byte string WITH zero terminator */
if (pReturnValue) {
*pReturnValue = n + 1;
}
/* Success */
error = 0;
} else {
/* Could not convert string */
error = 1;
}
#endif
#endif //DIRENT_USE_ASCII_SHORT_PATHS_ON_WINDOWS
return error;
}
/* Convert wide-character string to multi-byte string */
static int
dirent_wcstombs_s(
size_t *pReturnValue,
char *mbstr,
size_t sizeInBytes, /* max size of mbstr */
const wchar_t *wcstr,
size_t count)
{
int error;
#ifndef DIRENT_USE_ASCII_SHORT_PATHS_ON_WINDOWS
// we don't use "count" at all: we assume wcstr is zero terminated:
size_t n = (size_t) WideCharToMultiByte (CP_UTF8, 0, wcstr, -1, mbstr, 0,NULL,NULL);//sizeInBytes, NULL, NULL);
if (n==0) {
error = 1;
if (sizeInBytes>0) mbstr[0]='\0';
if (pReturnValue) *pReturnValue = 0;
}
else if (n<=sizeInBytes) {
error = WideCharToMultiByte (CP_UTF8, 0, wcstr, -1, mbstr, n, NULL, NULL) == 0 ? 1 : 0;
if (pReturnValue) *pReturnValue = n;
}
else {
// Buffer too low:
if (sizeInBytes>0) {
if (sizeInBytes>1) WideCharToMultiByte (CP_UTF8, 0, wcstr, -1, mbstr, sizeInBytes-1, NULL, NULL);
mbstr[sizeInBytes-1] = '\0';
}
if (pReturnValue) *pReturnValue = sizeInBytes;
error = 1;
}
/*
if (!mbstr || n < count) {
// Zero-terminate output buffer
if (mbstr && sizeInBytes) {
if (n >= sizeInBytes) {
n = sizeInBytes - 1;
}
mbstr[n] = '\0';
}
// Lenght of resulting multi-bytes string WITH zero-terminator
if (pReturnValue) {
*pReturnValue = n + 1;
}
// Success
error = 0;
} else {
// Cannot convert string
error = 1;
}
*/
#else //DIRENT_USE_ASCII_SHORT_PATHS_ON_WINDOWS
#if defined(_MSC_VER) && _MSC_VER >= 1400
/* Microsoft Visual Studio 2005 or later */
error = wcstombs_s (pReturnValue, mbstr, sizeInBytes, wcstr, count);
#else
/* Older Visual Studio or non-Microsoft compiler */
size_t n;
/* Convert to multi-byte string (or count the number of bytes needed) */
n = wcstombs (mbstr, wcstr, sizeInBytes);
if (!mbstr || n < count) {
/* Zero-terminate output buffer */
if (mbstr && sizeInBytes) {
if (n >= sizeInBytes) {
n = sizeInBytes - 1;
}
mbstr[n] = '\0';
}
/* Lenght of resulting multi-bytes string WITH zero-terminator */
if (pReturnValue) {
*pReturnValue = n + 1;
}
/* Success */
error = 0;
} else {
/* Cannot convert string */
error = 1;
}
#endif
#endif //DIRENT_USE_ASCII_SHORT_PATHS_ON_WINDOWS
return error;
}
/* Set errno variable */
static void
dirent_set_errno(
int error)
{
#if defined(_MSC_VER) && _MSC_VER >= 1400
/* Microsoft Visual Studio 2005 and later */
_set_errno (error);
#else
/* Non-Microsoft compiler or older Microsoft compiler */
errno = error;
#endif
}
// The code of this single method comes from the musl library
// (MIT licensed, Copyright © 2005-2014 Rich Felker, et al.)
# ifndef SIZE_MAX // Can't we just set it to INT_MAX or something like that ?
# define SIZE_MAX_WAS_NOT_DEFINED
# define SIZE_MAX INT_MAX // should be in limits.h AFAIK
# endif //SIZE_MAX
inline static int scandir(const char *path, struct dirent ***res,
int (*sel)(const struct dirent *),
int (*cmp)(const struct dirent **, const struct dirent **))
{
DIR *d = opendir(path);
struct dirent *de, **names=0, **tmp;
size_t cnt=0, len=0;
int old_errno = errno;
if (!d) return -1;
while ((errno=0), (de = readdir(d))) {