-
Notifications
You must be signed in to change notification settings - Fork 8
/
Copy pathSSYSqliter.m
2145 lines (1820 loc) · 63.1 KB
/
SSYSqliter.m
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
#import "SSYSqliter.h"
#import "NSError+InfoAccess.h"
#import "NSArray+SafeGetters.h"
#import "NSError+MoreDescriptions.h"
#import "NSError+MyDomain.h"
#import "NSError+SSYInfo.h"
#include "sqlite3.h"
NSString* const SSYSqliterErrorDomain = @"SSYSqliterErrorDomain" ;
NSString* const SSYSqliterSqliteErrorCode = @"SqliteErrorCode" ;
@implementation NSObject (HelpSQL)
- (NSString*)stringEsquotedSQLValue {
NSString* answer ;
if ([self isKindOfClass:[NSNumber class]]) {
answer = [(NSNumber*)self descriptionWithLocale:nil] ;
// -descriptionWithLocale: is documented to return the
// the number in the expected "normal-looking" format for the
// type (integer, float, double, etc.) "that the number
// was created with".
}
else if ([self isKindOfClass:[NSString class]]) {
NSString* work ;
if ([(NSString*)self rangeOfString:@"'"].location == NSNotFound) {
work = [self copy] ;
}
else {
work = [[NSMutableString alloc] initWithString:(NSString*)self] ;
[(NSMutableString*)work replaceOccurrencesOfString:@"'"
withString:@"''"
options:0
range:NSMakeRange(0, [(NSString*)self length])] ;
}
answer = [NSString stringWithFormat:@"'%@'", work] ;
[work release] ;
}
else if ([self isKindOfClass:[NSSet class]]) {
answer = [NSString stringWithFormat:@"(%@)",
[[(NSSet*)self stringsEsquotedSQLValue] componentsJoinedByString:@","]] ;
}
else if ([self isKindOfClass:[NSArray class]]) {
answer = [NSString stringWithFormat:@"(%@)",
[[(NSArray*)self stringsEsquotedSQLValue] componentsJoinedByString:@","]] ;
}
else if ([self isKindOfClass:[NSNull class]]) {
answer = @"NULL" ;
// Note that, because this not quoted as in 'NULL', this will be
// interpreted by sqlite as the sqlite keyword NULL.
}
else {
NSLog(@"%s Error: Class %@ cannot be stringified.",
__PRETTY_FUNCTION__,
[self class]) ;
answer = nil ;
}
return answer ;
}
@end
@implementation NSMutableString (HelpSQL)
+ (NSMutableString*)queryStringWhereColumn:(NSString*)column
isAnyOfValues:(NSArray*)values {
NSMutableString* query = nil ;
if ((column != nil) && (values !=nil) && ([values count] > 0)) {
query = [[NSMutableString alloc] initWithFormat:@"(%@=%@",
column,
[[values objectAtIndex:0] stringEsquotedSQLValue]] ;
NSInteger i ;
NSInteger N = [values count] ;
for (i=1; i<N; i++) {
[query appendFormat:@" OR %@=%@",
column,
[[values objectAtIndex:i] stringEsquotedSQLValue]] ;
}
[query appendString:@")"] ;
}
return [query autorelease] ;
}
@end
@implementation NSSet (HelpSQL)
- (NSArray*)stringsEsquotedSQLValue {
NSMutableArray* stringsEsquotedSQLValue = [[NSMutableArray alloc] init] ;
NSEnumerator* e = [self objectEnumerator] ;
id object ;
while ((object = [e nextObject])) {
[stringsEsquotedSQLValue addObject:[object stringEsquotedSQLValue]] ;
}
NSArray* output = [stringsEsquotedSQLValue copy] ;
[stringsEsquotedSQLValue release] ;
return [output autorelease] ;
}
@end
@implementation NSArray (HelpSQL)
- (NSArray*)stringsEsquotedSQLValue {
NSMutableArray* stringsEsquotedSQLValue = [[NSMutableArray alloc] init] ;
NSEnumerator* e = [self objectEnumerator] ;
id object ;
while ((object = [e nextObject])) {
[stringsEsquotedSQLValue addObject:[object stringEsquotedSQLValue]] ;
}
NSArray* output = [stringsEsquotedSQLValue copy] ;
[stringsEsquotedSQLValue release] ;
return [output autorelease] ;
}
@end
@interface NSDictionary (HelpSQL)
- (NSString*)sqlQuotedUpdateString ;
@end
@implementation NSDictionary (HelpSQL)
- (NSString*)sqlQuotedUpdateString {
NSMutableArray* kvPairs = [[NSMutableArray alloc] init] ;
NSEnumerator* e = [self keyEnumerator] ;
NSString* key ;
while ((key = [e nextObject])) {
NSString* kvPair = [[NSString alloc] initWithFormat:@"%@=%@",
key,
[[self objectForKey:key] stringEsquotedSQLValue]] ;
[kvPairs addObject:kvPair] ;
[kvPair release] ;
}
NSString* answer = [kvPairs componentsJoinedByString:@","] ;
[kvPairs release] ;
return answer ;
}
@end
NSString* SSAppDatabaseKeysAndTypesFromArray(NSArray* a) {
NSEnumerator* e = [a objectEnumerator] ;
NSString* s ;
NSMutableString* sList = [[NSMutableString alloc] initWithString:@"identifier INTEGER PRIMARY KEY,"] ;
BOOL wasKey = NO ; // otherwise, wasType
while ((s = [e nextObject])) {
[sList appendString:s] ;
if (wasKey) {
wasKey = YES ;
}
else {
[sList appendString:@","] ;
wasKey = NO ;
}
}
NSString* answer = [sList substringToIndex:([sList length]-1)] ; // -1 to eliminate the final ","
[sList release] ;
return answer ;
}
NSString* SSAppDatabaseKeysAndBlobsFromArray(NSArray* a) {
NSEnumerator* e = [a objectEnumerator] ;
NSString* s ;
NSMutableString* sList = [[NSMutableString alloc] initWithString:@"identifier INTEGER PRIMARY KEY,"] ;
while ((s = [e nextObject])) {
[sList appendString:s] ;
[sList appendString:@" blob,"] ;
}
NSString* answer = [sList substringToIndex:([sList length]-1)] ; // -1 to eliminate the final ","
[sList release] ;
return answer ;
}
// struct used in the demo methods
typedef struct {
NSInteger a;
CGFloat b;
char c[50];
} sampleRecord;
// callbacks from sqlite_exec()
static int CheckExistenceOfSQLiteRow(void* sneakback, int nFound, char **values, char **colKeys){
BOOL itemExists = (nFound > 0) ;
*((BOOL*)sneakback) = itemExists ;
return 0;
}
static int AddValueStringToArray(void* sneakback, int nColumns, char **colValues, char **colKeys) {
// sneakback must be the address of an initialized NSMutableArray*.
int result = 0 ;
if (nColumns != 1) {
result = nColumns ;
}
if (result == 0) {
NSString* value = [NSString stringWithCString:colValues[0]
encoding:NSUTF8StringEncoding] ;
NSMutableArray* array = *((NSMutableArray**)sneakback) ;
[array addObject:value] ;
}
return result;
}
#if 0
!! This function is no longer used.
static NSInteger AddKeyStringToArray(void* sneakback, NSInteger nColumns, char **colValues, char **colKeys) {
// sneakback must be the address of an initialized NSMutableArray*.
NSInteger i;
for(i=0; i<nColumns; i++){
NSString* attributeKey = [NSString stringWithCString:colKeys[i]
encoding:NSUTF8StringEncoding] ;
NSLog(@"Got attributeKey = \"%@\"", attributeKey ) ;
[*((NSMutableArray**)sneakback) addObject:attributeKey] ;
}
return 0;
}
#endif
#if 0
!! This function is no longer used.
static NSInteger AddValueIntegerToArray(void* sneakback, NSInteger nColumns, char **colValues, char **colKeys) {
// sneakback must be the address of an initialized NSMutableArray*.
NSInteger result = 0 ;
if (nColumns != 1) {
result = nColumns ;
}
if (result == 0) {
NSNumber* value = [NSNumber numberWithInteger:[[NSString stringWithCString:colValues[0]
encoding:NSUTF8StringEncoding] integerValue]] ;
NSMutableArray* array = *((NSMutableArray**)sneakback) ;
[array addObject:value] ;
}
return result;
}
#endif
#if 0
!! This function is no longer used.
static NSInteger CountColumns(void* sneakback, NSInteger nColumns, char **colValues, char **colKeys) {
// sneakback must be the address of an int.
*((NSInteger*)(sneakback)) = nColumns ;
return 0 ;
}
#endif
#if 0
!! This callback is no longer used.
static NSInteger SSAppSQLiteCallback(void* NotUsed, NSInteger nColumns, char **colValues, char **colKeys) {
NSInteger i;
for(i=0; i<nColumns; i++){
NSString* attributeKey = [NSString stringWithCString:colKeys[i]
encoding:NSUTF8StringEncoding] ;
NSLog(@"Got attributeKey = \"%@\"", attributeKey ) ;
NSString* dataS = [NSString stringWithCString:colValues[i]
encoding:NSUTF8StringEncoding] ;
NSLog(@"Got dataS = \"%@\"", dataS ) ;
}
return 0;
}
#endif
@implementation SSYSqliter
+ (NSMutableString*)queryDeleteFromTable:(NSString*)table
whereColumn:(NSString*)column
is:(id)value {
NSMutableString* query = nil ;
if (value) {
query = [NSMutableString stringWithFormat:@"DELETE FROM %@ WHERE %@ = %@",
table,
column,
[value stringEsquotedSQLValue]] ;
}
return query ;
}
+ (NSMutableString*)queryDeleteFromTable:(NSString*)table
whereColumn:(NSString*)column
isIn:(id)values {
NSMutableString* query = nil ;
if ((values != nil) && [values count] > 0) {
if ([values isKindOfClass:[NSSet class]]) {
// Convert from set to array
values = [(NSSet*)values allObjects] ;
}
query = [NSMutableString stringWithFormat:@"DELETE FROM %@ WHERE %@ IN %@",
table,
column,
[values stringEsquotedSQLValue]] ;
}
return query ;
}
+ (NSString*)queryInsertIntoTable:(NSString*)table
columns:(NSArray*)columns
values:(NSArray*)values {
return [NSString stringWithFormat:@"INSERT INTO %@ (%@) VALUES %@",
table,
[columns componentsJoinedByString:@","],
[values stringEsquotedSQLValue]] ;
}
+ (NSString*)queryAlterTable:(NSString*)table
addColumn:(NSString*)column
type:(NSString*)type {
return [NSString stringWithFormat:@"ALTER TABLE %@ ADD COLUMN %@ %@",
table,
[column stringEsquotedSQLValue],
[type stringEsquotedSQLValue]] ;
}
+ (NSString*)queryUpdateTable:(NSString*)table
updates:(NSDictionary*)updates
whereColumn:(NSString*)whereColumn
whereValue:(id)whereValue {
NSString* updateString = [updates sqlQuotedUpdateString] ;
return [NSString stringWithFormat:@"UPDATE %@ SET %@ WHERE (%@=%@)",
table,
updateString,
whereColumn,
[whereValue stringEsquotedSQLValue]] ;
}
- (NSString *)path {
return m_path ;
}
- (void)setPath:(NSString *)newPath {
[newPath retain] ;
[m_path release] ;
m_path = newPath ;
}
- (NSError*)makeErrorWithAppCode:(NSInteger)appCode
sqliteCode:(NSInteger)sqliteCode
sqliteDescription:(const char*)sqliteDescriptionC
query:(NSString*)query
prettyFunction:(const char*)prettyFunction {
NSError* error = [NSError errorWithDomain:SSYSqliterErrorDomain
code:appCode
userInfo:nil] ;
error = [error errorByAddingUnderlyingError:[NSError errorWithDomain:SSYSqliterErrorDomain
code:sqliteCode
userInfo:nil]] ;
NSString* sqliteDescription ;
if (sqliteDescriptionC) {
sqliteDescription = [NSString stringWithCString:sqliteDescriptionC
encoding:NSUTF8StringEncoding] ;
}
else {
sqliteDescription = @"[No error message from sqlite.]" ;
}
error = [error errorByAddingUserInfoObject:sqliteDescription
forKey:@"sqlite's Error Description"] ;
error = [error errorByAddingUserInfoObject:query
forKey:@"Query"] ;
error = [error errorByAddingUserInfoObject:[self path]
forKey:@"Database path"] ;
if (prettyFunction != NULL) {
error = [error errorByOverwritingUserInfoObject:[NSString stringWithCString:prettyFunction
encoding:NSUTF8StringEncoding]
forKey:SSYMethodNameErrorKey] ;
}
return error ;
}
- (BOOL)initDatabaseError_p:(NSError**)error_p {
BOOL ok = YES ;
NSInteger result;
@synchronized([self class]) {
/* When multiple .bmco documents are opened during launch of
BookMacster, without the above @synchronized, we get a Thread
Sanitizer violation inside sqlite3 at this line of code:
pTo->xMutexAlloc = pFrom->xMutexAlloc;
in this call stack:
#0 sqlite3_initialize sqlite3.c:139153 (Bkmxwork:x86_64+0x6af7f9)
#1 openDatabase sqlite3.c:141782 (Bkmxwork:x86_64+0x715932)
#2 sqlite3_open sqlite3.c:142101 (Bkmxwork:x86_64+0x71583f)
#3 -[SSYSqliter initDatabaseError_p:] SSYSqliter.m:418 (Bkmxwork:x86_64+0x366a04)
#4 -[SSYSqliter initWithPath:error_p:] SSYSqliter.m:2082 (Bkmxwork:x86_64+0x373cba)
#5 +[BSManagedDocument(SSYMetadata) metadataAtPath:] BSManagedDocument+SSYMetadata.m:17 (Bkmxwork:x86_64+0x5f8cc2)
#6 +[BSManagedDocument(SSYMetadata) metadataObjectForKey:path:] BSManagedDocument+SSYMetadata.m:99 (Bkmxwork:x86_64+0x5f96cd)
#7 -[BSManagedDocument(SSYMetadata) metadataObjectForKey:] BSManagedDocument+SSYMetadata.m:114 (Bkmxwork:x86_64+0x5f9973)
#8 -[BkmxDoc configurePersistentStoreCoordinatorForURL:ofType:modelConfiguration:storeOptions:error:] BkmxDoc.m:1704 (Bkmxwork:x86_64+0x41f2a2)
#9 -[BSManagedDocument configurePersistentStoreCoordinatorForURL:ofType:error:] BSManagedDocument.m:256 (Bkmxwork:x86_64+0x3e3f77)
#10 -[BSManagedDocument readFromURL:ofType:error:] BSManagedDocument.m:375 (Bkmxwork:x86_64+0x3e512e)
This stack will run concurrently, on different threads for each
document.
Although this method only runs once for each document, and both
parameters (the path and &m_db) are different for each document,
using @synchronize(self) or @synchronize([self path]) does not fix the
violation. It looks like the explanation is that, in sqlite3,
pTo->MutexAlloc is a global variable. Therefore, in order to fix the
violation, we need to @synchronize on something global ([self class]).
Anyhow, doing that cleared the Thread Sanitizer violation. */
result = sqlite3_open([[self path] UTF8String], (sqlite3**)&m_db) ;
}
if (result != SQLITE_OK) {
if (error_p) {
m_db = NULL ;
*error_p = [self makeErrorWithAppCode:453026
sqliteCode:result
sqliteDescription:sqlite3_errmsg(m_db)
query:nil
prettyFunction:__PRETTY_FUNCTION__] ;
}
// See http://lists.apple.com/archives/Objc-language/2008/Sep/msg00133.html ...
ok = NO ;
}
return ok ;
}
- (void *)db {
if (!m_db) {
NSError* error = nil ;
BOOL ok = [self initDatabaseError_p:&error] ;
if (!ok) {
NSLog(@"Internal Error 928-2928 %@", [error longDescription]) ;
}
}
return m_db ;
}
- (BOOL)createTable:(NSString*)table
withKeysAndTypes:(NSArray*)keysAndTypes
error:(NSError**)error_p {
NSString* cts = SSAppDatabaseKeysAndTypesFromArray(keysAndTypes) ;
char* errMsg = 0 ;
void* db = [self db] ;
NSInteger result ;
NSString* statement = [[NSString alloc] initWithFormat:
@"create table %@ (%@)",
table,
cts] ;
result = sqlite3_exec(db, [statement UTF8String], NULL, NULL, &errMsg);
NSError* error = nil ;
if (!(result == SQLITE_OK)) {
error = [self makeErrorWithAppCode:453001
sqliteCode:result
sqliteDescription:errMsg
query:statement
prettyFunction:__PRETTY_FUNCTION__] ;
sqlite3_free(errMsg) ;
}
[statement release] ;
if (error && error_p) {
*error_p = error ;
}
return (error == nil) ;
}
- (BOOL)removeTable:(NSString*)table
error:(NSError**)error_p {
const char* tableC = [table UTF8String] ;
char statement[255] ;
char* errMsg = 0 ;
void* db = [self db] ;
NSInteger result ;
// drop the table
sprintf(statement, "drop table if exists %s", tableC) ;
result = sqlite3_exec(db, statement, NULL, NULL, &errMsg) ;
NSError* error = nil ;
if (result == SQLITE_OK) {
// remove the empty space
sprintf(statement, "vacuum %s", tableC) ;
result = sqlite3_exec(db, statement, NULL, NULL, &errMsg) ;
if (result != SQLITE_OK) {
error = [self makeErrorWithAppCode:453002
sqliteCode:result
sqliteDescription:errMsg
query:[NSString stringWithCString:statement
encoding:NSUTF8StringEncoding]
prettyFunction:__PRETTY_FUNCTION__] ;
sqlite3_free(errMsg) ;
goto end ;
}
}
else {
error = [self makeErrorWithAppCode:453003
sqliteCode:result
sqliteDescription:errMsg
query:[NSString stringWithCString:statement
encoding:NSUTF8StringEncoding]
prettyFunction:__PRETTY_FUNCTION__] ;
sqlite3_free(errMsg) ;
}
end:
if (error && error_p) {
*error_p = error ;
}
return (error == nil) ;
}
- (BOOL)createTableOfBlobsNamed:(NSString*)table
withKeys:(NSArray*)keys
error:(NSError**)error_p {
NSString* cts = SSAppDatabaseKeysAndBlobsFromArray(keys) ;
char* errMsg = 0 ;
void* db = [self db] ;
NSInteger result ;
NSString* statement = [[NSString alloc] initWithFormat:
@"create table %@ (%@)",
table,
cts] ;
NSError* error = nil ;
result = sqlite3_exec(db, [statement UTF8String], NULL, NULL, &errMsg);
if (!(result == SQLITE_OK)) {
error = [self makeErrorWithAppCode:453004
sqliteCode:result
sqliteDescription:errMsg
query:statement
prettyFunction:__PRETTY_FUNCTION__] ;
sqlite3_free(errMsg) ;
}
[statement release] ;
if (error_p != nil) {
*error_p = error ;
}
return (error == nil) ;
}
- (NSArray*)allTablesError:(NSError**)error_p {
void* db = [self db] ;
char* errMsg = NULL ;
NSInteger result ;
NSError* error = nil ;
NSString* statement ;
statement = @"SELECT name FROM sqlite_master WHERE type='table' ORDER BY name" ;
NSMutableArray* names = [[NSMutableArray alloc] init] ;
result = sqlite3_exec(db, [statement UTF8String], AddValueStringToArray, &names, &errMsg);
if (!(result == SQLITE_OK)) {
error = [self makeErrorWithAppCode:453005
sqliteCode:result
sqliteDescription:errMsg
query:statement
prettyFunction:__PRETTY_FUNCTION__] ;
sqlite3_free(errMsg) ;
}
NSArray* output = [names copy] ;
[names release] ;
if (error_p != nil) {
*error_p = error ;
}
return [output autorelease] ;
}
- (NSDictionary*)structureOfTable:(NSString*)table
error:(NSError**)error_p {
// Will return nil if fails, empty array if no columns
void* db = [self db] ;
char* errMsg = NULL ;
NSInteger result ;
NSString* statement ;
statement = [[NSString alloc] initWithFormat:@"pragma table_info(%@)", table] ;
char** results ;
int nRows ;
int nColumns ;
NSError* error = nil ;
result = sqlite3_get_table(
db, /* An open database */
[statement UTF8String], /* SQL to be executed */
&results, /* Result written to a char *[] that this points to */
&nRows, /* Number of result rows written here */
&nColumns, /* Number of result columns written here */
&errMsg /* Error msg written here */
) ;
/* 'results' is a two-dimensional array of C strings, actually a char***.
The number of strings in 'results' is (nColumns+1) x nRows.
'nRows' is typically 6, corresponding to the number of fields given for each column.
The columns correspond to the columns in the table, except for the
first column which is the array of strings:
'cid' columnIdentifier "0", "1", "2", ...
'name', name "FirstName", "LastName"
'type', data type "INTEGER", "TEXT", "LONGVARCHAR", "VARCHAR(32)", "BLOB", "LONG", "" (empty string)
'notnull', allow NULL value? "0" or "99"
'dflt_value', default value "0", "1", "some string", "NULL"
'pk' is primary key "0" or "1"
and of course this first column is responsible for the "+1" in (nColumns+1)
*/
NSMutableDictionary* columnDics = nil ;
if (!(result == SQLITE_OK)) {
error = [self makeErrorWithAppCode:453006
sqliteCode:result
sqliteDescription:errMsg
query:statement
prettyFunction:__PRETTY_FUNCTION__] ;
sqlite3_free(errMsg) ;
goto end ;
}
else {
NSInteger j ;
NSMutableArray* keys = [NSMutableArray array] ;
NSInteger nameColumnIndex = NSNotFound ;
for (j=0; j<nColumns; j++) {
/* Column keys (names) (strings) in this table are:
'cid' columnIdentifier "0", "1", "2", ...
'name', name "FirstName", "LastName"
'type', data type "INTEGER", "TEXT", "LONGVARCHAR", "VARCHAR(32)", "BLOB", "LONG", "" (empty string)
'notnull', allow NULL value? "0" or "99"
'dflt_value', default value "0", "1", "some string", "NULL"
'pk' is primary key "0" or "1"
*/
NSString* key = [NSString stringWithCString:results[j]
encoding:NSUTF8StringEncoding] ;
if ([key isEqualToString:@"name"]) {
nameColumnIndex = j ;
}
[keys addObject:key] ;
}
if (nameColumnIndex == NSNotFound) {
error = SSYMakeError(453027, @"No 'name' key in table structure") ;
goto end ;
}
NSInteger i ;
columnDics = [[NSMutableDictionary alloc] init] ;
for (i=0; i<nRows; i++) {
NSMutableDictionary* columnDic = [[NSMutableDictionary alloc] init] ;
NSString* columnName ;
for (j=0; j<nColumns; j++) {
NSInteger k = (i+1)*nColumns + j ;
char* result = results[k] ;
// result will either be a null-terminated string, or NULL.
// (Note that for a zero-length string, result will not be NULL
// but will be a pointer to NULL.)
id object ;
if (result != NULL) {
object = [NSString stringWithCString:result
encoding:NSUTF8StringEncoding] ;
}
else {
object = [NSNull null] ;
}
if (j == nameColumnIndex) {
columnName = object ;
}
else {
[columnDic setObject:object
forKey:[keys objectAtIndex:j]] ;
}
}
[columnDics setObject:columnDic
forKey:columnName] ;
[columnDic release] ;
}
}
sqlite3_free_table(results) ;
end:
[statement release] ;
NSDictionary* output = [columnDics copy] ;
[columnDics release] ;
if (error_p != nil) {
*error_p = error ;
}
return [output autorelease] ;
}
- (NSInteger)numberOfColumnsInTable:(NSString*)table
error:(NSError**)error_p {
return [[self structureOfTable:table
error:error_p] count] ;
}
- (NSInteger)numberOfRowsInTable:(NSString*)table
error:(NSError**)error_p {
NSString* query = [NSString stringWithFormat:@"SELECT count(*) FROM %@",
[table stringEsquotedSQLValue]] ;
NSError* error = nil ;
NSArray* result = [self runQuery:query
error:&error] ;
if (error_p && error) {
*error_p = error ;
}
NSInteger answer = NSNotFound ;
if ([result count] > 0) {
answer = [[result objectAtIndex:0] integerValue] ;
}
return answer ;
}
- (NSString*)primaryKeyOfTable:(NSString*)table
error:(NSError**)error_p {
NSDictionary* columnDics = [self structureOfTable:table
error:error_p] ;
NSString* primaryKey = nil ;
for (NSString* columnName in columnDics) {
if ([[[columnDics objectForKey:columnName] objectForKey:@"pk"] isEqualToString:@"1"]) {
primaryKey = columnName ;
break ;
}
}
return primaryKey ;
}
- (NSArray*)keysInTable:(NSString*)table
error:(NSError**)error_p {
NSDictionary* columnDics = [self structureOfTable:table
error:error_p] ;
return [columnDics allKeys] ;
}
- (NSArray*)allPrimaryKeysInTable:(NSString*)table
error:(NSError**)error_p {
void* db = [self db] ;
char* errMsg = NULL ;
NSInteger result ;
NSArray* output = nil ;
NSError* error = nil ;
NSString* primaryKey = [self primaryKeyOfTable:table
error:&error] ;
if (!primaryKey) {
return nil ;
}
if (error != nil) {
goto end ;
}
NSString* statement ;
NSMutableArray* primaryKeys = [[NSMutableArray alloc] init] ;
statement = [[NSString alloc] initWithFormat:@"SELECT %@ FROM %@", primaryKey, table] ;
result = sqlite3_exec(db, [statement UTF8String], AddValueStringToArray, &primaryKeys, &errMsg);
if (!(result == SQLITE_OK)) {
error = [self makeErrorWithAppCode:453007
sqliteCode:result
sqliteDescription:errMsg
query:statement
prettyFunction:__PRETTY_FUNCTION__] ;
sqlite3_free(errMsg) ;
}
[statement release] ;
output = [primaryKeys copy] ;
[primaryKeys release] ;
end:
if (error_p != nil) {
*error_p = error ;
}
return [output autorelease] ;
}
- (BOOL)checkpointAndCloseError_p:(NSError**)error_p {
if (!m_db) {
return YES ;
// because sqlite3_wal_checkpoint(NULL, NULL) will crash
}
NSInteger result = SQLITE_OK;
int nFramesLogged = -99;
int nFramesCheckpointed = -99;
BOOL canWrite = sqlite3_db_readonly(m_db, "main") == 0;
if (canWrite) {
result = sqlite3_wal_checkpoint_v2(
m_db, /* Database handle */
NULL, /* Name of attached database, NULL for main/only database */
SQLITE_CHECKPOINT_PASSIVE,
&nFramesLogged,
&nFramesCheckpointed) ;
}
if (result == SQLITE_BUSY) {
/* I've found that this happens when deallocating an ExtoreFirefox,
after an export in style 2, which should not even have used an
SSYSQLiter. So we ignore this error. */
result = SQLITE_OK ;
}
if ((result != SQLITE_OK) && error_p) {
*error_p = [self makeErrorWithAppCode:453035
sqliteCode:result
sqliteDescription:sqlite3_errmsg([self db])
query:@"Doing checkpoint (not a query)"
prettyFunction:__PRETTY_FUNCTION__] ;
*error_p = [*error_p errorByAddingUserInfoObject:[NSNumber numberWithInteger:nFramesLogged]
forKey:@"Frames Logged"] ;
*error_p = [*error_p errorByAddingUserInfoObject:[NSNumber numberWithInteger:nFramesCheckpointed]
forKey:@"Frames Checkpointed"] ;
}
sqlite3_close(m_db) ;
m_db = NULL ;
return (result == SQLITE_OK) ;
}
- (long long)nextLongLongInColumn:(NSString*)column
inTable:(NSString*)table
initialValue:(long long)initialValue
error:(NSError**)error_p {
NSString* query = [NSString stringWithFormat:@"SELECT %@ FROM %@ ORDER BY %@ DESC LIMIT 1",
column,
table,
column] ;
// In above, DESC means descending order and LIMIT 1 says to only return 1 row.
NSError* error = nil ;
NSNumber* lastNumber = [[self runQuery:query
error:&error] firstObjectSafely] ;
if (error_p && error) {
*error_p = error ;
}
long long next = initialValue ;
if ([lastNumber respondsToSelector:@selector(integerValue)]) {
next = [lastNumber integerValue] + 1 ;
}
return next ;
}
- (NSDictionary*)nextRowFromPreparedStatement:(sqlite3_stmt*)preparedStatement {
// If 1 column, will return object value
// If >1 column, will return dictionary of object values
id row = nil ;
NSInteger nColumns = sqlite3_column_count(preparedStatement) ;
if (nColumns > 1) {
row = [[NSMutableDictionary alloc] init] ;
}
int iColumn ;
for (iColumn= 0; iColumn<nColumns; iColumn++) {
NSInteger type = sqlite3_column_type(preparedStatement, iColumn) ;
// The sqlite3_column_type() routine returns datatype code for the initial data type of the result column.
// The returned value is one of SQLITE_INTEGER, SQLITE_FLOAT, SQLITE_TEXT, SQLITE_BLOB, or SQLITE_NULL
// Initialize to null in case object is not found
const void* pFirstByte = NULL ;
NSInteger nBytes = 0 ;
id object = nil ;
int64_t intValue ;
const unsigned char* utf8String ;
double doubleValue ;
switch(type) {
case SQLITE_BLOB:
nBytes = sqlite3_column_bytes(preparedStatement, iColumn) ;
// "The return value from sqlite3_column_blob() for a zero-length
// blob is an arbitrary pointer, possibly even a NULL pointer."
// Therefore, we qualify...
if (nBytes > 0) {
pFirstByte = sqlite3_column_blob(preparedStatement, iColumn) ;
object = [NSData dataWithBytes:pFirstByte
length:nBytes] ;
}
break ;
case SQLITE_INTEGER:
// The INTEGER type in sqlite3 is 64 bits, so it is always
// OK to use sqlite3_column_int64(). If we knew that the
// value was < 32 bits, we could use sqlite3_column_int(),
// we don't. As a matter of fact, the addDate and
// lastModifiedDate in Firefox 3 are microseconds since
// year 1970, and this does indeed exceed 32 bits.
intValue = sqlite3_column_int64(preparedStatement, iColumn) ;
object = [NSNumber numberWithLongLong:intValue] ;
break ;
case SQLITE_TEXT:
// "Strings returned by sqlite3_column_text() and sqlite3_column_text16(),
// even zero-length strings, are always zero terminated."
// So, we ignore the length and just convert it
utf8String = sqlite3_column_text(preparedStatement, iColumn) ;
object = [NSString stringWithUTF8String:(char*)utf8String] ;
break ;
case SQLITE_FLOAT:
doubleValue = sqlite3_column_double(preparedStatement, iColumn) ;
object = [NSNumber numberWithDouble:doubleValue] ;
break ;
case SQLITE_NULL:
default:
// Just leave object nil, will replace with [NSNull null] soon.
;
}
if (object == nil) {
object = [NSNull null] ;
}
NSString* key = [NSString stringWithCString:sqlite3_column_name(preparedStatement, iColumn)
encoding:NSUTF8StringEncoding] ;
if (row != nil) {
[row setObject:object
forKey:key] ;
}
else {
[row release] ; // Really it's nil, but this is to satisfy Clang
row = [object retain] ;
}
}
NSDictionary* output = [row copy] ;
[row release] ;
return [output autorelease] ;
}
- (NSArray*)runQuery:(NSString*)query
error:(NSError**)error_p {
// If 1 column, will return array of object values
// If >1 column, will return array of dictionaries of object values
NSArray* output = nil ;
NSError* error = nil ;
#if SSY_SQLITER_LOG_QUERIES
NSLog(@"%s: %@", __PRETTY_FUNCTION__, query) ;
#endif
if (query != nil) {
void* db = [self db] ;
int result ;
// Compile the query into a virtual machine
sqlite3_stmt* preparedStatement = NULL ;
result = sqlite3_prepare(db, [query UTF8String], -1, &preparedStatement, NULL) ;
if (result != SQLITE_OK) {
error = [self makeErrorWithAppCode:453008
sqliteCode:result