/
physfs.c
1958 lines (1543 loc) · 49.4 KB
1
2
3
4
5
6
7
8
9
10
/**
* PhysicsFS; a portable, flexible file i/o abstraction.
*
* Documentation is in physfs.h. It's verbose, honest. :)
*
* Please see the file LICENSE in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
11
12
13
14
#if HAVE_CONFIG_H
# include <config.h>
#endif
15
16
17
18
19
#if (defined PHYSFS_PROFILING)
#include <sys/time.h>
#include <unistd.h>
#endif
20
21
22
23
24
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "physfs.h"
25
26
27
#define __PHYSICSFS_INTERNAL__
#include "physfs_internal.h"
28
29
typedef struct __PHYSFS_ERRMSGTYPE__
{
30
PHYSFS_uint64 tid;
31
32
33
34
35
int errorAvailable;
char errorString[80];
struct __PHYSFS_ERRMSGTYPE__ *next;
} ErrMsg;
36
typedef struct __PHYSFS_DIRINFO__
37
38
{
char *dirName;
39
40
DirHandle *dirHandle;
struct __PHYSFS_DIRINFO__ *next;
41
} PhysDirInfo;
42
43
44
typedef struct __PHYSFS_FILEHANDLELIST__
{
45
PHYSFS_file handle;
46
47
struct __PHYSFS_FILEHANDLELIST__ *next;
} FileHandleList;
48
49
50
/* The various i/o drivers... */
51
52
#if (defined PHYSFS_SUPPORTS_ZIP)
53
54
extern const PHYSFS_ArchiveInfo __PHYSFS_ArchiveInfo_ZIP;
extern const DirFunctions __PHYSFS_DirFunctions_ZIP;
55
#endif
56
57
58
59
60
61
#if (defined PHYSFS_SUPPORTS_GRP)
extern const PHYSFS_ArchiveInfo __PHYSFS_ArchiveInfo_GRP;
extern const DirFunctions __PHYSFS_DirFunctions_GRP;
#endif
62
63
64
65
66
#if (defined PHYSFS_SUPPORTS_QPAK)
extern const PHYSFS_ArchiveInfo __PHYSFS_ArchiveInfo_QPAK;
extern const DirFunctions __PHYSFS_DirFunctions_QPAK;
#endif
67
68
69
70
71
72
73
74
75
76
#if (defined PHYSFS_SUPPORTS_HOG)
extern const PHYSFS_ArchiveInfo __PHYSFS_ArchiveInfo_HOG;
extern const DirFunctions __PHYSFS_DirFunctions_HOG;
#endif
#if (defined PHYSFS_SUPPORTS_MVL)
extern const PHYSFS_ArchiveInfo __PHYSFS_ArchiveInfo_MVL;
extern const DirFunctions __PHYSFS_DirFunctions_MVL;
#endif
77
extern const DirFunctions __PHYSFS_DirFunctions_DIR;
78
79
80
static const PHYSFS_ArchiveInfo *supported_types[] =
81
82
{
#if (defined PHYSFS_SUPPORTS_ZIP)
83
&__PHYSFS_ArchiveInfo_ZIP,
84
85
#endif
86
87
88
89
#if (defined PHYSFS_SUPPORTS_GRP)
&__PHYSFS_ArchiveInfo_GRP,
#endif
90
91
92
93
#if (defined PHYSFS_SUPPORTS_QPAK)
&__PHYSFS_ArchiveInfo_QPAK,
#endif
94
95
96
97
98
99
100
101
#if (defined PHYSFS_SUPPORTS_HOG)
&__PHYSFS_ArchiveInfo_HOG,
#endif
#if (defined PHYSFS_SUPPORTS_MVL)
&__PHYSFS_ArchiveInfo_MVL,
#endif
102
103
104
NULL
};
105
106
107
108
109
110
static const DirFunctions *dirFunctions[] =
{
#if (defined PHYSFS_SUPPORTS_ZIP)
&__PHYSFS_DirFunctions_ZIP,
#endif
111
112
113
114
#if (defined PHYSFS_SUPPORTS_GRP)
&__PHYSFS_DirFunctions_GRP,
#endif
115
116
117
118
#if (defined PHYSFS_SUPPORTS_QPAK)
&__PHYSFS_DirFunctions_QPAK,
#endif
119
120
121
122
123
124
125
126
#if (defined PHYSFS_SUPPORTS_HOG)
&__PHYSFS_DirFunctions_HOG,
#endif
#if (defined PHYSFS_SUPPORTS_MVL)
&__PHYSFS_DirFunctions_MVL,
#endif
127
128
129
&__PHYSFS_DirFunctions_DIR,
NULL
};
130
131
132
133
134
135
/* General PhysicsFS state ... */
static int initialized = 0;
static ErrMsg *errorMessages = NULL;
136
137
static PhysDirInfo *searchPath = NULL;
static PhysDirInfo *writeDir = NULL;
138
139
140
141
142
143
static FileHandleList *openWriteList = NULL;
static FileHandleList *openReadList = NULL;
static char *baseDir = NULL;
static char *userDir = NULL;
static int allowSymLinks = 0;
144
145
146
/* mutexes ... */
static void *errorLock = NULL; /* protects error message list. */
static void *stateLock = NULL; /* protects other PhysFS static state. */
147
148
149
150
/* functions ... */
151
static void __PHYSFS_bubble_sort(void *a, PHYSFS_uint32 lo, PHYSFS_uint32 hi,
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
int (*cmpfn)(void *, PHYSFS_uint32, PHYSFS_uint32),
void (*swapfn)(void *, PHYSFS_uint32, PHYSFS_uint32))
{
PHYSFS_uint32 i;
int sorted;
do
{
sorted = 1;
for (i = lo; i < hi; i++)
{
if (cmpfn(a, i, i + 1) > 0)
{
swapfn(a, i, i + 1);
sorted = 0;
} /* if */
} /* for */
} while (!sorted);
} /* __PHYSFS_bubble_sort */
173
static void __PHYSFS_quick_sort(void *a, PHYSFS_uint32 lo, PHYSFS_uint32 hi,
174
175
176
177
178
179
180
int (*cmpfn)(void *, PHYSFS_uint32, PHYSFS_uint32),
void (*swapfn)(void *, PHYSFS_uint32, PHYSFS_uint32))
{
PHYSFS_uint32 i;
PHYSFS_uint32 j;
PHYSFS_uint32 v;
181
if ((hi - lo) <= PHYSFS_QUICKSORT_THRESHOLD)
182
183
__PHYSFS_bubble_sort(a, lo, hi, cmpfn, swapfn);
else
184
185
{
i = (hi + lo) / 2;
186
187
if (cmpfn(a, lo, i) > 0) swapfn(a, lo, i);
188
189
190
191
192
193
194
195
196
197
198
199
if (cmpfn(a, lo, hi) > 0) swapfn(a, lo, hi);
if (cmpfn(a, i, hi) > 0) swapfn(a, i, hi);
j = hi - 1;
swapfn(a, i, j);
i = lo;
v = j;
while (1)
{
while(cmpfn(a, ++i, v) < 0) { /* do nothing */ }
while(cmpfn(a, --j, v) > 0) { /* do nothing */ }
if (j < i)
200
break;
201
202
203
204
205
206
swapfn(a, i, j);
} /* while */
swapfn(a, i, hi-1);
__PHYSFS_quick_sort(a, lo, j, cmpfn, swapfn);
__PHYSFS_quick_sort(a, i+1, hi, cmpfn, swapfn);
} /* else */
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
} /* __PHYSFS_quick_sort */
void __PHYSFS_sort(void *entries, PHYSFS_uint32 max,
int (*cmpfn)(void *, PHYSFS_uint32, PHYSFS_uint32),
void (*swapfn)(void *, PHYSFS_uint32, PHYSFS_uint32))
{
/*
* Quicksort w/ Bubblesort fallback algorithm inspired by code from here:
* http://www.cs.ubc.ca/spider/harrison/Java/sorting-demo.html
*/
__PHYSFS_quick_sort(entries, 0, max - 1, cmpfn, swapfn);
} /* __PHYSFS_sort */
#if (defined PHYSFS_PROFILING)
#define PHYSFS_TEST_SORT_ITERATIONS 150
#define PHYSFS_TEST_SORT_ELEMENTS (64 * 1024)
static int __PHYSFS_test_sort_cmp(void *_a, PHYSFS_uint32 x, PHYSFS_uint32 y)
{
PHYSFS_sint32 *a = (PHYSFS_sint32 *) _a;
PHYSFS_sint32 one = a[x];
PHYSFS_sint32 two = a[y];
if (one < two)
return(-1);
else if (one > two)
return(1);
return(0);
} /* __PHYSFS_test_sort_cmp */
static void __PHYSFS_test_sort_swap(void *_a, PHYSFS_uint32 x, PHYSFS_uint32 y)
{
PHYSFS_sint32 *a = (PHYSFS_sint32 *) _a;
PHYSFS_sint32 tmp;
tmp = a[x];
a[x] = a[y];
a[y] = tmp;
} /* __PHYSFS_test_sort_swap */
static int __PHYSFS_test_sort_do(PHYSFS_uint32 *timer,
PHYSFS_sint32 *a, PHYSFS_uint32 max,
int (*cmpfn)(void *, PHYSFS_uint32, PHYSFS_uint32),
void (*swapfn)(void *, PHYSFS_uint32, PHYSFS_uint32))
{
PHYSFS_uint32 i;
struct timeval starttime, endtime;
gettimeofday(&starttime, NULL);
__PHYSFS_sort(a, max, cmpfn, swapfn);
gettimeofday(&endtime, NULL);
for (i = 1; i < max; i++)
{
if (a[i] < a[i - 1])
return(0);
} /* for */
if (timer != NULL)
{
*timer = ( ((endtime.tv_sec - starttime.tv_sec) * 1000) +
((endtime.tv_usec - starttime.tv_usec) / 1000) );
} /* if */
return(1);
} /* __PHYSFS_test_sort_time */
static void __PHYSFS_test_sort(void)
{
PHYSFS_uint32 elasped[PHYSFS_TEST_SORT_ITERATIONS];
PHYSFS_sint32 iter;
PHYSFS_sint32 a[PHYSFS_TEST_SORT_ELEMENTS];
PHYSFS_sint32 i, x;
int success;
printf("Testing __PHYSFS_sort (linear presorted) ... ");
for (iter = 0; iter < PHYSFS_TEST_SORT_ITERATIONS; iter++)
{
/* set up array to sort. */
for (i = 0; i < PHYSFS_TEST_SORT_ELEMENTS; i++)
a[i] = i;
/* sort it. */
success = __PHYSFS_test_sort_do(&elasped[iter],
a, PHYSFS_TEST_SORT_ELEMENTS,
__PHYSFS_test_sort_cmp,
__PHYSFS_test_sort_swap);
if (!success)
break;
} /* for */
if (!success)
printf("Failed!\n");
else
{
for (x = 0, iter = 0; iter < PHYSFS_TEST_SORT_ITERATIONS; iter++)
x += elasped[iter];
x /= PHYSFS_TEST_SORT_ITERATIONS;
printf("Average run (%lu) ms.\n", (unsigned long) x);
} /* else */
printf("Testing __PHYSFS_sort (linear presorted reverse) ... ");
for (iter = 0; iter < PHYSFS_TEST_SORT_ITERATIONS; iter++)
{
/* set up array to sort. */
for (i = 0, x = PHYSFS_TEST_SORT_ELEMENTS;
i < PHYSFS_TEST_SORT_ELEMENTS;
i++, x--)
{
a[i] = x;
} /* for */
/* sort it. */
success = __PHYSFS_test_sort_do(&elasped[iter],
a, PHYSFS_TEST_SORT_ELEMENTS,
__PHYSFS_test_sort_cmp,
__PHYSFS_test_sort_swap);
if (!success)
break;
} /* for */
if (!success)
printf("Failed!\n");
else
{
for (x = 0, iter = 0; iter < PHYSFS_TEST_SORT_ITERATIONS; iter++)
x += elasped[iter];
x /= PHYSFS_TEST_SORT_ITERATIONS;
printf("Average run (%lu) ms.\n", (unsigned long) x);
} /* else */
printf("Testing __PHYSFS_sort (randomized) ... ");
for (iter = 0; iter < PHYSFS_TEST_SORT_ITERATIONS; iter++)
{
/* set up array to sort. */
for (i = 0; i < PHYSFS_TEST_SORT_ELEMENTS; i++)
a[i] = (PHYSFS_uint32) rand();
/* sort it. */
success = __PHYSFS_test_sort_do(&elasped[iter],
a, PHYSFS_TEST_SORT_ELEMENTS,
__PHYSFS_test_sort_cmp,
__PHYSFS_test_sort_swap);
if (!success)
break;
} /* for */
if (!success)
printf("Failed!\n");
else
{
for (x = 0, iter = 0; iter < PHYSFS_TEST_SORT_ITERATIONS; iter++)
x += elasped[iter];
x /= PHYSFS_TEST_SORT_ITERATIONS;
printf("Average run (%lu) ms.\n", (unsigned long) x);
} /* else */
printf("__PHYSFS_test_sort() complete.\n\n");
} /* __PHYSFS_test_sort */
#endif
380
381
382
static ErrMsg *findErrorForCurrentThread(void)
{
ErrMsg *i;
383
PHYSFS_uint64 tid;
384
385
if (errorLock != NULL)
386
387
__PHYSFS_platformGrabMutex(errorLock);
388
389
if (errorMessages != NULL)
{
390
tid = __PHYSFS_platformGetThreadID();
391
392
393
394
for (i = errorMessages; i != NULL; i = i->next)
{
if (i->tid == tid)
395
{
396
397
if (errorLock != NULL)
__PHYSFS_platformReleaseMutex(errorLock);
398
return(i);
399
} /* if */
400
401
} /* for */
} /* if */
402
403
if (errorLock != NULL)
404
__PHYSFS_platformReleaseMutex(errorLock);
405
406
407
408
409
return(NULL); /* no error available. */
} /* findErrorForCurrentThread */
410
void __PHYSFS_setError(const char *str)
411
{
412
413
414
415
416
417
ErrMsg *err;
if (str == NULL)
return;
err = findErrorForCurrentThread();
418
419
420
421
422
423
424
if (err == NULL)
{
err = (ErrMsg *) malloc(sizeof (ErrMsg));
if (err == NULL)
return; /* uhh...? */
425
memset((void *) err, '\0', sizeof (ErrMsg));
426
err->tid = __PHYSFS_platformGetThreadID();
427
428
429
430
if (errorLock != NULL)
__PHYSFS_platformGrabMutex(errorLock);
431
432
err->next = errorMessages;
errorMessages = err;
433
434
435
if (errorLock != NULL)
__PHYSFS_platformReleaseMutex(errorLock);
436
437
438
439
440
} /* if */
err->errorAvailable = 1;
strncpy(err->errorString, str, sizeof (err->errorString));
err->errorString[sizeof (err->errorString) - 1] = '\0';
441
} /* __PHYSFS_setError */
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
const char *PHYSFS_getLastError(void)
{
ErrMsg *err = findErrorForCurrentThread();
if ((err == NULL) || (!err->errorAvailable))
return(NULL);
err->errorAvailable = 0;
return(err->errorString);
} /* PHYSFS_getLastError */
/* MAKE SURE that errorLock is held before calling this! */
457
458
459
460
461
462
463
static void freeErrorMessages(void)
{
ErrMsg *i;
ErrMsg *next;
for (i = errorMessages; i != NULL; i = next)
{
464
next = i->next;
465
466
free(i);
} /* for */
467
468
errorMessages = NULL;
469
470
471
} /* freeErrorMessages */
472
473
474
475
476
477
478
479
480
481
482
void PHYSFS_getLinkedVersion(PHYSFS_Version *ver)
{
if (ver != NULL)
{
ver->major = PHYSFS_VER_MAJOR;
ver->minor = PHYSFS_VER_MINOR;
ver->patch = PHYSFS_VER_PATCH;
} /* if */
} /* PHYSFS_getLinkedVersion */
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
static const char *find_filename_extension(const char *fname)
{
const char *retval = strchr(fname, '.');
const char *p = retval;
while (p != NULL)
{
p = strchr(p + 1, '.');
if (p != NULL)
retval = p;
} /* while */
if (retval != NULL)
retval++; /* skip '.' */
return(retval);
} /* find_filename_extension */
502
503
504
static DirHandle *openDirectory(const char *d, int forWriting)
{
const DirFunctions **i;
505
const char *ext;
506
507
508
BAIL_IF_MACRO(!__PHYSFS_platformExists(d), ERR_NO_SUCH_FILE, NULL);
509
510
ext = find_filename_extension(d);
if (ext != NULL)
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
/* Look for archivers with matching file extensions first... */
for (i = dirFunctions; *i != NULL; i++)
{
if (__PHYSFS_platformStricmp(ext, (*i)->info->extension) == 0)
{
if ((*i)->isArchive(d, forWriting))
return( (*i)->openArchive(d, forWriting) );
} /* if */
} /* for */
/* failing an exact file extension match, try all the others... */
for (i = dirFunctions; *i != NULL; i++)
{
if (__PHYSFS_platformStricmp(ext, (*i)->info->extension) != 0)
{
if ((*i)->isArchive(d, forWriting))
return( (*i)->openArchive(d, forWriting) );
} /* if */
} /* for */
} /* if */
else /* no extension? Try them all. */
{
for (i = dirFunctions; *i != NULL; i++)
{
if ((*i)->isArchive(d, forWriting))
return( (*i)->openArchive(d, forWriting) );
} /* for */
} /* else */
541
542
543
544
545
546
__PHYSFS_setError(ERR_UNSUPPORTED_ARCHIVE);
return(NULL);
} /* openDirectory */
547
static PhysDirInfo *buildDirInfo(const char *newDir, int forWriting)
548
549
{
DirHandle *dirHandle = NULL;
550
PhysDirInfo *di = NULL;
551
552
553
554
555
556
BAIL_IF_MACRO(newDir == NULL, ERR_INVALID_ARGUMENT, 0);
dirHandle = openDirectory(newDir, forWriting);
BAIL_IF_MACRO(dirHandle == NULL, NULL, 0);
557
di = (PhysDirInfo *) malloc(sizeof (PhysDirInfo));
558
if (di == NULL)
559
{
560
dirHandle->funcs->dirClose(dirHandle);
561
562
BAIL_IF_MACRO(di == NULL, ERR_OUT_OF_MEMORY, 0);
} /* if */
563
564
565
566
567
di->dirName = (char *) malloc(strlen(newDir) + 1);
if (di->dirName == NULL)
{
free(di);
568
dirHandle->funcs->dirClose(dirHandle);
569
BAIL_MACRO(ERR_OUT_OF_MEMORY, 0);
570
571
572
573
574
575
576
577
578
} /* if */
di->next = NULL;
di->dirHandle = dirHandle;
strcpy(di->dirName, newDir);
return(di);
} /* buildDirInfo */
579
/* MAKE SURE you've got the stateLock held before calling this! */
580
static int freeDirInfo(PhysDirInfo *di, FileHandleList *openList)
581
582
583
584
585
586
587
588
{
FileHandleList *i;
if (di == NULL)
return(1);
for (i = openList; i != NULL; i = i->next)
{
589
const DirHandle *h = ((FileHandle *) &(i->handle.opaque))->dirHandle;
590
591
BAIL_IF_MACRO(h == di->dirHandle, ERR_FILES_STILL_OPEN, 0);
} /* for */
592
593
di->dirHandle->funcs->dirClose(di->dirHandle);
594
595
596
597
598
599
600
free(di->dirName);
free(di);
return(1);
} /* freeDirInfo */
static char *calculateUserDir(void)
601
602
603
604
605
606
{
char *retval = NULL;
const char *str = NULL;
str = __PHYSFS_platformGetUserDir();
if (str != NULL)
607
retval = (char *) str;
608
609
610
611
612
613
else
{
const char *dirsep = PHYSFS_getDirSeparator();
const char *uname = __PHYSFS_platformGetUserName();
str = (uname != NULL) ? uname : "default";
614
retval = (char *) malloc(strlen(baseDir) + strlen(str) +
615
strlen(dirsep) + 6);
616
617
618
619
if (retval == NULL)
__PHYSFS_setError(ERR_OUT_OF_MEMORY);
else
620
sprintf(retval, "%susers%s%s", baseDir, dirsep, str);
621
622
if (uname != NULL)
623
free((void *) uname);
624
625
626
627
628
629
} /* else */
return(retval);
} /* calculateUserDir */
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
static int appendDirSep(char **dir)
{
const char *dirsep = PHYSFS_getDirSeparator();
char *ptr;
if (strcmp((*dir + strlen(*dir)) - strlen(dirsep), dirsep) == 0)
return(1);
ptr = realloc(*dir, strlen(*dir) + strlen(dirsep) + 1);
if (!ptr)
{
free(*dir);
return(0);
} /* if */
strcat(ptr, dirsep);
*dir = ptr;
return(1);
} /* appendDirSep */
651
652
static char *calculateBaseDir(const char *argv0)
{
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
const char *dirsep = PHYSFS_getDirSeparator();
char *retval;
char *ptr;
/*
* See if the platform driver wants to handle this for us...
*/
retval = __PHYSFS_platformCalcBaseDir(argv0);
if (retval != NULL)
return(retval);
/*
* Determine if there's a path on argv0. If there is, that's the base dir.
*/
ptr = strstr(argv0, dirsep);
if (ptr != NULL)
{
char *p = ptr;
size_t size;
while (p != NULL)
{
ptr = p;
p = strstr(p + 1, dirsep);
} /* while */
678
size = (size_t) (ptr - argv0);
679
680
681
682
683
684
685
686
687
688
retval = (char *) malloc(size + 1);
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
memcpy(retval, argv0, size);
retval[size] = '\0';
return(retval);
} /* if */
/*
* Last ditch effort: it's the current working directory. (*shrug*)
*/
689
690
retval = __PHYSFS_platformCurrentDir();
if(retval != NULL) {
691
return(retval);
692
693
694
695
696
697
698
699
700
701
}
/*
* Ok, current directory doesn't exist, use the root directory.
* Not a good alternative, but it only happens if the current
* directory was deleted from under the program.
*/
retval = (char *) malloc(strlen(dirsep) + 1);
strcpy(retval, dirsep);
return(retval);
702
703
704
} /* calculateBaseDir */
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
static int initializeMutexes(void)
{
errorLock = __PHYSFS_platformCreateMutex();
if (errorLock == NULL)
goto initializeMutexes_failed;
stateLock = __PHYSFS_platformCreateMutex();
if (stateLock == NULL)
goto initializeMutexes_failed;
return(1); /* success. */
initializeMutexes_failed:
if (errorLock != NULL)
__PHYSFS_platformDestroyMutex(errorLock);
if (stateLock != NULL)
__PHYSFS_platformDestroyMutex(stateLock);
errorLock = stateLock = NULL;
return(0); /* failed. */
} /* initializeMutexes */
729
730
int PHYSFS_init(const char *argv0)
{
731
732
char *ptr;
733
BAIL_IF_MACRO(initialized, ERR_IS_INITIALIZED, 0);
734
BAIL_IF_MACRO(!__PHYSFS_platformInit(), NULL, 0);
735
736
737
BAIL_IF_MACRO(!initializeMutexes(), NULL, 0);
738
baseDir = calculateBaseDir(argv0);
739
BAIL_IF_MACRO(baseDir == NULL, NULL, 0);
740
741
742
743
744
745
ptr = __PHYSFS_platformRealPath(baseDir);
free(baseDir);
BAIL_IF_MACRO(ptr == NULL, NULL, 0);
baseDir = ptr;
746
BAIL_IF_MACRO(!appendDirSep(&baseDir), NULL, 0);
747
748
userDir = calculateUserDir();
749
750
751
752
753
754
755
if (userDir != NULL)
{
ptr = __PHYSFS_platformRealPath(userDir);
free(userDir);
userDir = ptr;
} /* if */
756
if ((userDir == NULL) || (!appendDirSep(&userDir)))
757
758
759
760
761
762
{
free(baseDir);
baseDir = NULL;
return(0);
} /* if */
763
initialized = 1;
764
765
766
/* This makes sure that the error subsystem is initialized. */
__PHYSFS_setError(PHYSFS_getLastError());
767
768
769
770
771
772
773
774
775
776
777
778
779
#if (defined PHYSFS_PROFILING)
srand(time(NULL));
setbuf(stdout, NULL);
printf("\n");
printf("********************************************************\n");
printf("Warning! Profiling is built into this copy of PhysicsFS!\n");
printf("********************************************************\n");
printf("\n");
printf("\n");
__PHYSFS_test_sort();
#endif
780
781
782
783
return(1);
} /* PHYSFS_init */
784
/* MAKE SURE you hold stateLock before calling this! */
785
static int closeFileHandleList(FileHandleList **list)
786
787
788
{
FileHandleList *i;
FileHandleList *next = NULL;
789
FileHandle *h;
790
791
792
793
for (i = *list; i != NULL; i = next)
{
next = i->next;
794
795
h = (FileHandle *) (i->handle.opaque);
if (!h->funcs->fileClose(h))
796
797
798
799
800
801
{
*list = i;
return(0);
} /* if */
free(i);
802
803
804
} /* for */
*list = NULL;
805
806
return(1);
} /* closeFileHandleList */
807
808
809
/* MAKE SURE you hold the stateLock before calling this! */
810
811
static void freeSearchPath(void)
{
812
813
PhysDirInfo *i;
PhysDirInfo *next = NULL;
814
815
816
closeFileHandleList(&openReadList);
817
818
819
820
if (searchPath != NULL)
{
for (i = searchPath; i != NULL; i = next)
{
821
next = i->next;
822
freeDirInfo(i, openReadList);
823
824
825
826
827
828
} /* for */
searchPath = NULL;
} /* if */
} /* freeSearchPath */
829
int PHYSFS_deinit(void)
830
831
{
BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0);
832
BAIL_IF_MACRO(!__PHYSFS_platformDeinit(), NULL, 0);
833
834
closeFileHandleList(&openWriteList);
835
836
BAIL_IF_MACRO(!PHYSFS_setWriteDir(NULL), ERR_FILES_STILL_OPEN, 0);
837
838
839
freeSearchPath();
freeErrorMessages();
840
if (baseDir != NULL)
841
{
842
free(baseDir);
843
844
845
846
847
848
849
850
baseDir = NULL;
} /* if */
if (userDir != NULL)
{
free(userDir);
userDir = NULL;
} /* if */
851
852
allowSymLinks = 0;
853
initialized = 0;
854
855
856
857
858
__PHYSFS_platformDestroyMutex(errorLock);
__PHYSFS_platformDestroyMutex(stateLock);
errorLock = stateLock = NULL;
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
return(1);
} /* PHYSFS_deinit */
const PHYSFS_ArchiveInfo **PHYSFS_supportedArchiveTypes(void)
{
return(supported_types);
} /* PHYSFS_supportedArchiveTypes */
void PHYSFS_freeList(void *list)
{
void **i;
for (i = (void **) list; *i != NULL; i++)
free(*i);
free(list);
} /* PHYSFS_freeList */
const char *PHYSFS_getDirSeparator(void)
{
881
return(__PHYSFS_platformDirSeparator);
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
} /* PHYSFS_getDirSeparator */
char **PHYSFS_getCdRomDirs(void)
{
return(__PHYSFS_platformDetectAvailableCDs());
} /* PHYSFS_getCdRomDirs */
const char *PHYSFS_getBaseDir(void)
{
return(baseDir); /* this is calculated in PHYSFS_init()... */
} /* PHYSFS_getBaseDir */
const char *PHYSFS_getUserDir(void)
{
899
return(userDir); /* this is calculated in PHYSFS_init()... */
900
901
902
903
904
} /* PHYSFS_getUserDir */
const char *PHYSFS_getWriteDir(void)
{
905
906
907
908
909
910
const char *retval = NULL;
__PHYSFS_platformGrabMutex(stateLock);
if (writeDir != NULL)
retval = writeDir->dirName;
__PHYSFS_platformReleaseMutex(stateLock);
911
912
return(retval);
913
914
915
916
917
} /* PHYSFS_getWriteDir */
int PHYSFS_setWriteDir(const char *newDir)
{
918
919
920
921
int retval = 1;
__PHYSFS_platformGrabMutex(stateLock);
922
923
if (writeDir != NULL)
{
924
925
BAIL_IF_MACRO_MUTEX(!freeDirInfo(writeDir, openWriteList), NULL,
stateLock, 0);
926
927
928
writeDir = NULL;
} /* if */
929
930
if (newDir != NULL)
{
931
writeDir = buildDirInfo(newDir, 1);
932
retval = (writeDir != NULL);
933
} /* if */
934
935
936
937
__PHYSFS_platformReleaseMutex(stateLock);
return(retval);
938
939
940
941
942
} /* PHYSFS_setWriteDir */
int PHYSFS_addToSearchPath(const char *newDir, int appendToPath)
{
943
944
945
PhysDirInfo *di;
PhysDirInfo *prev = NULL;
PhysDirInfo *i;
946
947
__PHYSFS_platformGrabMutex(stateLock);
948
949
950
951
952
for (i = searchPath; i != NULL; i = i->next)
{
/* already in search path? */
BAIL_IF_MACRO_MUTEX(strcmp(newDir, i->dirName)==0, NULL, stateLock, 1);
953
prev = i;
954
} /* for */
955
956
di = buildDirInfo(newDir, 0);
957
BAIL_IF_MACRO_MUTEX(di == NULL, NULL, stateLock, 0);
958
959
960
if (appendToPath)
{
961
di->next = NULL;
962
if (prev == NULL)
963
searchPath = di;
964
else
965
prev->next = di;
966
967
968
969
970
} /* if */
else
{
di->next = searchPath;
searchPath = di;
971
972
} /* else */
973
__PHYSFS_platformReleaseMutex(stateLock);
974
975
976
977
978
979
return(1);
} /* PHYSFS_addToSearchPath */
int PHYSFS_removeFromSearchPath(const char *oldDir)
{
980
981
982
PhysDirInfo *i;
PhysDirInfo *prev = NULL;
PhysDirInfo *next = NULL;
983
984
985
BAIL_IF_MACRO(oldDir == NULL, ERR_INVALID_ARGUMENT, 0);
986
__PHYSFS_platformGrabMutex(stateLock);
987
988
989
990
for (i = searchPath; i != NULL; i = i->next)
{
if (strcmp(i->dirName, oldDir) == 0)
{
991
next = i->next;
992
993
BAIL_IF_MACRO_MUTEX(!freeDirInfo(i, openReadList), NULL,
stateLock, 0);
994
995
if (prev == NULL)
996
searchPath = next;
997
else
998
prev->next = next;
999
1000
BAIL_MACRO_MUTEX(NULL, stateLock, 1);