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[/] [riscv_vhdl/] [trunk/] [debugger/] [src/] [libdbg64g/] [include/] [dirent.h] - Blame information for rev 4

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1 4 sergeykhbr
/*
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*
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*
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
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
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*
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*
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*
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*
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
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
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
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
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
        /* Length 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
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
 

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