| Index: third_party/sqlite/src/src/main.c
|
| diff --git a/third_party/sqlite/src/src/main.c b/third_party/sqlite/src/src/main.c
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..4aaa61899cbd426a0e0342872aff037162fa9c7a
|
| --- /dev/null
|
| +++ b/third_party/sqlite/src/src/main.c
|
| @@ -0,0 +1,2670 @@
|
| +/*
|
| +** 2001 September 15
|
| +**
|
| +** The author disclaims copyright to this source code. In place of
|
| +** a legal notice, here is a blessing:
|
| +**
|
| +** May you do good and not evil.
|
| +** May you find forgiveness for yourself and forgive others.
|
| +** May you share freely, never taking more than you give.
|
| +**
|
| +*************************************************************************
|
| +** Main file for the SQLite library. The routines in this file
|
| +** implement the programmer interface to the library. Routines in
|
| +** other files are for internal use by SQLite and should not be
|
| +** accessed by users of the library.
|
| +*/
|
| +#include "sqliteInt.h"
|
| +
|
| +#ifdef SQLITE_ENABLE_FTS3
|
| +# include "fts3.h"
|
| +#endif
|
| +#ifdef SQLITE_ENABLE_RTREE
|
| +# include "rtree.h"
|
| +#endif
|
| +#ifdef SQLITE_ENABLE_ICU
|
| +# include "sqliteicu.h"
|
| +#endif
|
| +
|
| +#ifndef SQLITE_AMALGAMATION
|
| +/* IMPLEMENTATION-OF: R-46656-45156 The sqlite3_version[] string constant
|
| +** contains the text of SQLITE_VERSION macro.
|
| +*/
|
| +const char sqlite3_version[] = SQLITE_VERSION;
|
| +#endif
|
| +
|
| +/* IMPLEMENTATION-OF: R-53536-42575 The sqlite3_libversion() function returns
|
| +** a pointer to the to the sqlite3_version[] string constant.
|
| +*/
|
| +const char *sqlite3_libversion(void){ return sqlite3_version; }
|
| +
|
| +/* IMPLEMENTATION-OF: R-63124-39300 The sqlite3_sourceid() function returns a
|
| +** pointer to a string constant whose value is the same as the
|
| +** SQLITE_SOURCE_ID C preprocessor macro.
|
| +*/
|
| +const char *sqlite3_sourceid(void){ return SQLITE_SOURCE_ID; }
|
| +
|
| +/* IMPLEMENTATION-OF: R-35210-63508 The sqlite3_libversion_number() function
|
| +** returns an integer equal to SQLITE_VERSION_NUMBER.
|
| +*/
|
| +int sqlite3_libversion_number(void){ return SQLITE_VERSION_NUMBER; }
|
| +
|
| +/* IMPLEMENTATION-OF: R-54823-41343 The sqlite3_threadsafe() function returns
|
| +** zero if and only if SQLite was compiled mutexing code omitted due to
|
| +** the SQLITE_THREADSAFE compile-time option being set to 0.
|
| +*/
|
| +int sqlite3_threadsafe(void){ return SQLITE_THREADSAFE; }
|
| +
|
| +#if !defined(SQLITE_OMIT_TRACE) && defined(SQLITE_ENABLE_IOTRACE)
|
| +/*
|
| +** If the following function pointer is not NULL and if
|
| +** SQLITE_ENABLE_IOTRACE is enabled, then messages describing
|
| +** I/O active are written using this function. These messages
|
| +** are intended for debugging activity only.
|
| +*/
|
| +void (*sqlite3IoTrace)(const char*, ...) = 0;
|
| +#endif
|
| +
|
| +/*
|
| +** If the following global variable points to a string which is the
|
| +** name of a directory, then that directory will be used to store
|
| +** temporary files.
|
| +**
|
| +** See also the "PRAGMA temp_store_directory" SQL command.
|
| +*/
|
| +char *sqlite3_temp_directory = 0;
|
| +
|
| +/*
|
| +** Initialize SQLite.
|
| +**
|
| +** This routine must be called to initialize the memory allocation,
|
| +** VFS, and mutex subsystems prior to doing any serious work with
|
| +** SQLite. But as long as you do not compile with SQLITE_OMIT_AUTOINIT
|
| +** this routine will be called automatically by key routines such as
|
| +** sqlite3_open().
|
| +**
|
| +** This routine is a no-op except on its very first call for the process,
|
| +** or for the first call after a call to sqlite3_shutdown.
|
| +**
|
| +** The first thread to call this routine runs the initialization to
|
| +** completion. If subsequent threads call this routine before the first
|
| +** thread has finished the initialization process, then the subsequent
|
| +** threads must block until the first thread finishes with the initialization.
|
| +**
|
| +** The first thread might call this routine recursively. Recursive
|
| +** calls to this routine should not block, of course. Otherwise the
|
| +** initialization process would never complete.
|
| +**
|
| +** Let X be the first thread to enter this routine. Let Y be some other
|
| +** thread. Then while the initial invocation of this routine by X is
|
| +** incomplete, it is required that:
|
| +**
|
| +** * Calls to this routine from Y must block until the outer-most
|
| +** call by X completes.
|
| +**
|
| +** * Recursive calls to this routine from thread X return immediately
|
| +** without blocking.
|
| +*/
|
| +int sqlite3_initialize(void){
|
| + sqlite3_mutex *pMaster; /* The main static mutex */
|
| + int rc; /* Result code */
|
| +
|
| +#ifdef SQLITE_OMIT_WSD
|
| + rc = sqlite3_wsd_init(4096, 24);
|
| + if( rc!=SQLITE_OK ){
|
| + return rc;
|
| + }
|
| +#endif
|
| +
|
| + /* If SQLite is already completely initialized, then this call
|
| + ** to sqlite3_initialize() should be a no-op. But the initialization
|
| + ** must be complete. So isInit must not be set until the very end
|
| + ** of this routine.
|
| + */
|
| + if( sqlite3GlobalConfig.isInit ) return SQLITE_OK;
|
| +
|
| + /* Make sure the mutex subsystem is initialized. If unable to
|
| + ** initialize the mutex subsystem, return early with the error.
|
| + ** If the system is so sick that we are unable to allocate a mutex,
|
| + ** there is not much SQLite is going to be able to do.
|
| + **
|
| + ** The mutex subsystem must take care of serializing its own
|
| + ** initialization.
|
| + */
|
| + rc = sqlite3MutexInit();
|
| + if( rc ) return rc;
|
| +
|
| + /* Initialize the malloc() system and the recursive pInitMutex mutex.
|
| + ** This operation is protected by the STATIC_MASTER mutex. Note that
|
| + ** MutexAlloc() is called for a static mutex prior to initializing the
|
| + ** malloc subsystem - this implies that the allocation of a static
|
| + ** mutex must not require support from the malloc subsystem.
|
| + */
|
| + pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
|
| + sqlite3_mutex_enter(pMaster);
|
| + sqlite3GlobalConfig.isMutexInit = 1;
|
| + if( !sqlite3GlobalConfig.isMallocInit ){
|
| + rc = sqlite3MallocInit();
|
| + }
|
| + if( rc==SQLITE_OK ){
|
| + sqlite3GlobalConfig.isMallocInit = 1;
|
| + if( !sqlite3GlobalConfig.pInitMutex ){
|
| + sqlite3GlobalConfig.pInitMutex =
|
| + sqlite3MutexAlloc(SQLITE_MUTEX_RECURSIVE);
|
| + if( sqlite3GlobalConfig.bCoreMutex && !sqlite3GlobalConfig.pInitMutex ){
|
| + rc = SQLITE_NOMEM;
|
| + }
|
| + }
|
| + }
|
| + if( rc==SQLITE_OK ){
|
| + sqlite3GlobalConfig.nRefInitMutex++;
|
| + }
|
| + sqlite3_mutex_leave(pMaster);
|
| +
|
| + /* If rc is not SQLITE_OK at this point, then either the malloc
|
| + ** subsystem could not be initialized or the system failed to allocate
|
| + ** the pInitMutex mutex. Return an error in either case. */
|
| + if( rc!=SQLITE_OK ){
|
| + return rc;
|
| + }
|
| +
|
| + /* Do the rest of the initialization under the recursive mutex so
|
| + ** that we will be able to handle recursive calls into
|
| + ** sqlite3_initialize(). The recursive calls normally come through
|
| + ** sqlite3_os_init() when it invokes sqlite3_vfs_register(), but other
|
| + ** recursive calls might also be possible.
|
| + **
|
| + ** IMPLEMENTATION-OF: R-00140-37445 SQLite automatically serializes calls
|
| + ** to the xInit method, so the xInit method need not be threadsafe.
|
| + **
|
| + ** The following mutex is what serializes access to the appdef pcache xInit
|
| + ** methods. The sqlite3_pcache_methods.xInit() all is embedded in the
|
| + ** call to sqlite3PcacheInitialize().
|
| + */
|
| + sqlite3_mutex_enter(sqlite3GlobalConfig.pInitMutex);
|
| + if( sqlite3GlobalConfig.isInit==0 && sqlite3GlobalConfig.inProgress==0 ){
|
| + FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions);
|
| + sqlite3GlobalConfig.inProgress = 1;
|
| + memset(pHash, 0, sizeof(sqlite3GlobalFunctions));
|
| + sqlite3RegisterGlobalFunctions();
|
| + if( sqlite3GlobalConfig.isPCacheInit==0 ){
|
| + rc = sqlite3PcacheInitialize();
|
| + }
|
| + if( rc==SQLITE_OK ){
|
| + sqlite3GlobalConfig.isPCacheInit = 1;
|
| + rc = sqlite3OsInit();
|
| + }
|
| + if( rc==SQLITE_OK ){
|
| + sqlite3PCacheBufferSetup( sqlite3GlobalConfig.pPage,
|
| + sqlite3GlobalConfig.szPage, sqlite3GlobalConfig.nPage);
|
| + sqlite3GlobalConfig.isInit = 1;
|
| + }
|
| + sqlite3GlobalConfig.inProgress = 0;
|
| + }
|
| + sqlite3_mutex_leave(sqlite3GlobalConfig.pInitMutex);
|
| +
|
| + /* Go back under the static mutex and clean up the recursive
|
| + ** mutex to prevent a resource leak.
|
| + */
|
| + sqlite3_mutex_enter(pMaster);
|
| + sqlite3GlobalConfig.nRefInitMutex--;
|
| + if( sqlite3GlobalConfig.nRefInitMutex<=0 ){
|
| + assert( sqlite3GlobalConfig.nRefInitMutex==0 );
|
| + sqlite3_mutex_free(sqlite3GlobalConfig.pInitMutex);
|
| + sqlite3GlobalConfig.pInitMutex = 0;
|
| + }
|
| + sqlite3_mutex_leave(pMaster);
|
| +
|
| + /* The following is just a sanity check to make sure SQLite has
|
| + ** been compiled correctly. It is important to run this code, but
|
| + ** we don't want to run it too often and soak up CPU cycles for no
|
| + ** reason. So we run it once during initialization.
|
| + */
|
| +#ifndef NDEBUG
|
| +#ifndef SQLITE_OMIT_FLOATING_POINT
|
| + /* This section of code's only "output" is via assert() statements. */
|
| + if ( rc==SQLITE_OK ){
|
| + u64 x = (((u64)1)<<63)-1;
|
| + double y;
|
| + assert(sizeof(x)==8);
|
| + assert(sizeof(x)==sizeof(y));
|
| + memcpy(&y, &x, 8);
|
| + assert( sqlite3IsNaN(y) );
|
| + }
|
| +#endif
|
| +#endif
|
| +
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Undo the effects of sqlite3_initialize(). Must not be called while
|
| +** there are outstanding database connections or memory allocations or
|
| +** while any part of SQLite is otherwise in use in any thread. This
|
| +** routine is not threadsafe. But it is safe to invoke this routine
|
| +** on when SQLite is already shut down. If SQLite is already shut down
|
| +** when this routine is invoked, then this routine is a harmless no-op.
|
| +*/
|
| +int sqlite3_shutdown(void){
|
| + if( sqlite3GlobalConfig.isInit ){
|
| + sqlite3_os_end();
|
| + sqlite3_reset_auto_extension();
|
| + sqlite3GlobalConfig.isInit = 0;
|
| + }
|
| + if( sqlite3GlobalConfig.isPCacheInit ){
|
| + sqlite3PcacheShutdown();
|
| + sqlite3GlobalConfig.isPCacheInit = 0;
|
| + }
|
| + if( sqlite3GlobalConfig.isMallocInit ){
|
| + sqlite3MallocEnd();
|
| + sqlite3GlobalConfig.isMallocInit = 0;
|
| + }
|
| + if( sqlite3GlobalConfig.isMutexInit ){
|
| + sqlite3MutexEnd();
|
| + sqlite3GlobalConfig.isMutexInit = 0;
|
| + }
|
| +
|
| + return SQLITE_OK;
|
| +}
|
| +
|
| +/*
|
| +** This API allows applications to modify the global configuration of
|
| +** the SQLite library at run-time.
|
| +**
|
| +** This routine should only be called when there are no outstanding
|
| +** database connections or memory allocations. This routine is not
|
| +** threadsafe. Failure to heed these warnings can lead to unpredictable
|
| +** behavior.
|
| +*/
|
| +int sqlite3_config(int op, ...){
|
| + va_list ap;
|
| + int rc = SQLITE_OK;
|
| +
|
| + /* sqlite3_config() shall return SQLITE_MISUSE if it is invoked while
|
| + ** the SQLite library is in use. */
|
| + if( sqlite3GlobalConfig.isInit ) return SQLITE_MISUSE_BKPT;
|
| +
|
| + va_start(ap, op);
|
| + switch( op ){
|
| +
|
| + /* Mutex configuration options are only available in a threadsafe
|
| + ** compile.
|
| + */
|
| +#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0
|
| + case SQLITE_CONFIG_SINGLETHREAD: {
|
| + /* Disable all mutexing */
|
| + sqlite3GlobalConfig.bCoreMutex = 0;
|
| + sqlite3GlobalConfig.bFullMutex = 0;
|
| + break;
|
| + }
|
| + case SQLITE_CONFIG_MULTITHREAD: {
|
| + /* Disable mutexing of database connections */
|
| + /* Enable mutexing of core data structures */
|
| + sqlite3GlobalConfig.bCoreMutex = 1;
|
| + sqlite3GlobalConfig.bFullMutex = 0;
|
| + break;
|
| + }
|
| + case SQLITE_CONFIG_SERIALIZED: {
|
| + /* Enable all mutexing */
|
| + sqlite3GlobalConfig.bCoreMutex = 1;
|
| + sqlite3GlobalConfig.bFullMutex = 1;
|
| + break;
|
| + }
|
| + case SQLITE_CONFIG_MUTEX: {
|
| + /* Specify an alternative mutex implementation */
|
| + sqlite3GlobalConfig.mutex = *va_arg(ap, sqlite3_mutex_methods*);
|
| + break;
|
| + }
|
| + case SQLITE_CONFIG_GETMUTEX: {
|
| + /* Retrieve the current mutex implementation */
|
| + *va_arg(ap, sqlite3_mutex_methods*) = sqlite3GlobalConfig.mutex;
|
| + break;
|
| + }
|
| +#endif
|
| +
|
| +
|
| + case SQLITE_CONFIG_MALLOC: {
|
| + /* Specify an alternative malloc implementation */
|
| + sqlite3GlobalConfig.m = *va_arg(ap, sqlite3_mem_methods*);
|
| + break;
|
| + }
|
| + case SQLITE_CONFIG_GETMALLOC: {
|
| + /* Retrieve the current malloc() implementation */
|
| + if( sqlite3GlobalConfig.m.xMalloc==0 ) sqlite3MemSetDefault();
|
| + *va_arg(ap, sqlite3_mem_methods*) = sqlite3GlobalConfig.m;
|
| + break;
|
| + }
|
| + case SQLITE_CONFIG_MEMSTATUS: {
|
| + /* Enable or disable the malloc status collection */
|
| + sqlite3GlobalConfig.bMemstat = va_arg(ap, int);
|
| + break;
|
| + }
|
| + case SQLITE_CONFIG_SCRATCH: {
|
| + /* Designate a buffer for scratch memory space */
|
| + sqlite3GlobalConfig.pScratch = va_arg(ap, void*);
|
| + sqlite3GlobalConfig.szScratch = va_arg(ap, int);
|
| + sqlite3GlobalConfig.nScratch = va_arg(ap, int);
|
| + break;
|
| + }
|
| + case SQLITE_CONFIG_PAGECACHE: {
|
| + /* Designate a buffer for page cache memory space */
|
| + sqlite3GlobalConfig.pPage = va_arg(ap, void*);
|
| + sqlite3GlobalConfig.szPage = va_arg(ap, int);
|
| + sqlite3GlobalConfig.nPage = va_arg(ap, int);
|
| + break;
|
| + }
|
| +
|
| + case SQLITE_CONFIG_PCACHE: {
|
| + /* Specify an alternative page cache implementation */
|
| + sqlite3GlobalConfig.pcache = *va_arg(ap, sqlite3_pcache_methods*);
|
| + break;
|
| + }
|
| +
|
| + case SQLITE_CONFIG_GETPCACHE: {
|
| + if( sqlite3GlobalConfig.pcache.xInit==0 ){
|
| + sqlite3PCacheSetDefault();
|
| + }
|
| + *va_arg(ap, sqlite3_pcache_methods*) = sqlite3GlobalConfig.pcache;
|
| + break;
|
| + }
|
| +
|
| +#if defined(SQLITE_ENABLE_MEMSYS3) || defined(SQLITE_ENABLE_MEMSYS5)
|
| + case SQLITE_CONFIG_HEAP: {
|
| + /* Designate a buffer for heap memory space */
|
| + sqlite3GlobalConfig.pHeap = va_arg(ap, void*);
|
| + sqlite3GlobalConfig.nHeap = va_arg(ap, int);
|
| + sqlite3GlobalConfig.mnReq = va_arg(ap, int);
|
| +
|
| + if( sqlite3GlobalConfig.mnReq<1 ){
|
| + sqlite3GlobalConfig.mnReq = 1;
|
| + }else if( sqlite3GlobalConfig.mnReq>(1<<12) ){
|
| + /* cap min request size at 2^12 */
|
| + sqlite3GlobalConfig.mnReq = (1<<12);
|
| + }
|
| +
|
| + if( sqlite3GlobalConfig.pHeap==0 ){
|
| + /* If the heap pointer is NULL, then restore the malloc implementation
|
| + ** back to NULL pointers too. This will cause the malloc to go
|
| + ** back to its default implementation when sqlite3_initialize() is
|
| + ** run.
|
| + */
|
| + memset(&sqlite3GlobalConfig.m, 0, sizeof(sqlite3GlobalConfig.m));
|
| + }else{
|
| + /* The heap pointer is not NULL, then install one of the
|
| + ** mem5.c/mem3.c methods. If neither ENABLE_MEMSYS3 nor
|
| + ** ENABLE_MEMSYS5 is defined, return an error.
|
| + */
|
| +#ifdef SQLITE_ENABLE_MEMSYS3
|
| + sqlite3GlobalConfig.m = *sqlite3MemGetMemsys3();
|
| +#endif
|
| +#ifdef SQLITE_ENABLE_MEMSYS5
|
| + sqlite3GlobalConfig.m = *sqlite3MemGetMemsys5();
|
| +#endif
|
| + }
|
| + break;
|
| + }
|
| +#endif
|
| +
|
| + case SQLITE_CONFIG_LOOKASIDE: {
|
| + sqlite3GlobalConfig.szLookaside = va_arg(ap, int);
|
| + sqlite3GlobalConfig.nLookaside = va_arg(ap, int);
|
| + break;
|
| + }
|
| +
|
| + /* Record a pointer to the logger funcction and its first argument.
|
| + ** The default is NULL. Logging is disabled if the function pointer is
|
| + ** NULL.
|
| + */
|
| + case SQLITE_CONFIG_LOG: {
|
| + /* MSVC is picky about pulling func ptrs from va lists.
|
| + ** http://support.microsoft.com/kb/47961
|
| + ** sqlite3GlobalConfig.xLog = va_arg(ap, void(*)(void*,int,const char*));
|
| + */
|
| + typedef void(*LOGFUNC_t)(void*,int,const char*);
|
| + sqlite3GlobalConfig.xLog = va_arg(ap, LOGFUNC_t);
|
| + sqlite3GlobalConfig.pLogArg = va_arg(ap, void*);
|
| + break;
|
| + }
|
| +
|
| + default: {
|
| + rc = SQLITE_ERROR;
|
| + break;
|
| + }
|
| + }
|
| + va_end(ap);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Set up the lookaside buffers for a database connection.
|
| +** Return SQLITE_OK on success.
|
| +** If lookaside is already active, return SQLITE_BUSY.
|
| +**
|
| +** The sz parameter is the number of bytes in each lookaside slot.
|
| +** The cnt parameter is the number of slots. If pStart is NULL the
|
| +** space for the lookaside memory is obtained from sqlite3_malloc().
|
| +** If pStart is not NULL then it is sz*cnt bytes of memory to use for
|
| +** the lookaside memory.
|
| +*/
|
| +static int setupLookaside(sqlite3 *db, void *pBuf, int sz, int cnt){
|
| + void *pStart;
|
| + if( db->lookaside.nOut ){
|
| + return SQLITE_BUSY;
|
| + }
|
| + /* Free any existing lookaside buffer for this handle before
|
| + ** allocating a new one so we don't have to have space for
|
| + ** both at the same time.
|
| + */
|
| + if( db->lookaside.bMalloced ){
|
| + sqlite3_free(db->lookaside.pStart);
|
| + }
|
| + /* The size of a lookaside slot needs to be larger than a pointer
|
| + ** to be useful.
|
| + */
|
| + if( sz<=(int)sizeof(LookasideSlot*) ) sz = 0;
|
| + if( cnt<0 ) cnt = 0;
|
| + if( sz==0 || cnt==0 ){
|
| + sz = 0;
|
| + pStart = 0;
|
| + }else if( pBuf==0 ){
|
| + sz = ROUNDDOWN8(sz); /* IMP: R-33038-09382 */
|
| + sqlite3BeginBenignMalloc();
|
| + pStart = sqlite3Malloc( sz*cnt ); /* IMP: R-61949-35727 */
|
| + sqlite3EndBenignMalloc();
|
| + }else{
|
| + sz = ROUNDDOWN8(sz); /* IMP: R-33038-09382 */
|
| + pStart = pBuf;
|
| + }
|
| + db->lookaside.pStart = pStart;
|
| + db->lookaside.pFree = 0;
|
| + db->lookaside.sz = (u16)sz;
|
| + if( pStart ){
|
| + int i;
|
| + LookasideSlot *p;
|
| + assert( sz > (int)sizeof(LookasideSlot*) );
|
| + p = (LookasideSlot*)pStart;
|
| + for(i=cnt-1; i>=0; i--){
|
| + p->pNext = db->lookaside.pFree;
|
| + db->lookaside.pFree = p;
|
| + p = (LookasideSlot*)&((u8*)p)[sz];
|
| + }
|
| + db->lookaside.pEnd = p;
|
| + db->lookaside.bEnabled = 1;
|
| + db->lookaside.bMalloced = pBuf==0 ?1:0;
|
| + }else{
|
| + db->lookaside.pEnd = 0;
|
| + db->lookaside.bEnabled = 0;
|
| + db->lookaside.bMalloced = 0;
|
| + }
|
| + return SQLITE_OK;
|
| +}
|
| +
|
| +/*
|
| +** Return the mutex associated with a database connection.
|
| +*/
|
| +sqlite3_mutex *sqlite3_db_mutex(sqlite3 *db){
|
| + return db->mutex;
|
| +}
|
| +
|
| +/*
|
| +** Configuration settings for an individual database connection
|
| +*/
|
| +int sqlite3_db_config(sqlite3 *db, int op, ...){
|
| + va_list ap;
|
| + int rc;
|
| + va_start(ap, op);
|
| + switch( op ){
|
| + case SQLITE_DBCONFIG_LOOKASIDE: {
|
| + void *pBuf = va_arg(ap, void*); /* IMP: R-26835-10964 */
|
| + int sz = va_arg(ap, int); /* IMP: R-47871-25994 */
|
| + int cnt = va_arg(ap, int); /* IMP: R-04460-53386 */
|
| + rc = setupLookaside(db, pBuf, sz, cnt);
|
| + break;
|
| + }
|
| + default: {
|
| + static const struct {
|
| + int op; /* The opcode */
|
| + u32 mask; /* Mask of the bit in sqlite3.flags to set/clear */
|
| + } aFlagOp[] = {
|
| + { SQLITE_DBCONFIG_ENABLE_FKEY, SQLITE_ForeignKeys },
|
| + { SQLITE_DBCONFIG_ENABLE_TRIGGER, SQLITE_EnableTrigger },
|
| + };
|
| + unsigned int i;
|
| + rc = SQLITE_ERROR; /* IMP: R-42790-23372 */
|
| + for(i=0; i<ArraySize(aFlagOp); i++){
|
| + if( aFlagOp[i].op==op ){
|
| + int onoff = va_arg(ap, int);
|
| + int *pRes = va_arg(ap, int*);
|
| + int oldFlags = db->flags;
|
| + if( onoff>0 ){
|
| + db->flags |= aFlagOp[i].mask;
|
| + }else if( onoff==0 ){
|
| + db->flags &= ~aFlagOp[i].mask;
|
| + }
|
| + if( oldFlags!=db->flags ){
|
| + sqlite3ExpirePreparedStatements(db);
|
| + }
|
| + if( pRes ){
|
| + *pRes = (db->flags & aFlagOp[i].mask)!=0;
|
| + }
|
| + rc = SQLITE_OK;
|
| + break;
|
| + }
|
| + }
|
| + break;
|
| + }
|
| + }
|
| + va_end(ap);
|
| + return rc;
|
| +}
|
| +
|
| +
|
| +/*
|
| +** Return true if the buffer z[0..n-1] contains all spaces.
|
| +*/
|
| +static int allSpaces(const char *z, int n){
|
| + while( n>0 && z[n-1]==' ' ){ n--; }
|
| + return n==0;
|
| +}
|
| +
|
| +/*
|
| +** This is the default collating function named "BINARY" which is always
|
| +** available.
|
| +**
|
| +** If the padFlag argument is not NULL then space padding at the end
|
| +** of strings is ignored. This implements the RTRIM collation.
|
| +*/
|
| +static int binCollFunc(
|
| + void *padFlag,
|
| + int nKey1, const void *pKey1,
|
| + int nKey2, const void *pKey2
|
| +){
|
| + int rc, n;
|
| + n = nKey1<nKey2 ? nKey1 : nKey2;
|
| + rc = memcmp(pKey1, pKey2, n);
|
| + if( rc==0 ){
|
| + if( padFlag
|
| + && allSpaces(((char*)pKey1)+n, nKey1-n)
|
| + && allSpaces(((char*)pKey2)+n, nKey2-n)
|
| + ){
|
| + /* Leave rc unchanged at 0 */
|
| + }else{
|
| + rc = nKey1 - nKey2;
|
| + }
|
| + }
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Another built-in collating sequence: NOCASE.
|
| +**
|
| +** This collating sequence is intended to be used for "case independant
|
| +** comparison". SQLite's knowledge of upper and lower case equivalents
|
| +** extends only to the 26 characters used in the English language.
|
| +**
|
| +** At the moment there is only a UTF-8 implementation.
|
| +*/
|
| +static int nocaseCollatingFunc(
|
| + void *NotUsed,
|
| + int nKey1, const void *pKey1,
|
| + int nKey2, const void *pKey2
|
| +){
|
| + int r = sqlite3StrNICmp(
|
| + (const char *)pKey1, (const char *)pKey2, (nKey1<nKey2)?nKey1:nKey2);
|
| + UNUSED_PARAMETER(NotUsed);
|
| + if( 0==r ){
|
| + r = nKey1-nKey2;
|
| + }
|
| + return r;
|
| +}
|
| +
|
| +/*
|
| +** Return the ROWID of the most recent insert
|
| +*/
|
| +sqlite_int64 sqlite3_last_insert_rowid(sqlite3 *db){
|
| + return db->lastRowid;
|
| +}
|
| +
|
| +/*
|
| +** Return the number of changes in the most recent call to sqlite3_exec().
|
| +*/
|
| +int sqlite3_changes(sqlite3 *db){
|
| + return db->nChange;
|
| +}
|
| +
|
| +/*
|
| +** Return the number of changes since the database handle was opened.
|
| +*/
|
| +int sqlite3_total_changes(sqlite3 *db){
|
| + return db->nTotalChange;
|
| +}
|
| +
|
| +/*
|
| +** Close all open savepoints. This function only manipulates fields of the
|
| +** database handle object, it does not close any savepoints that may be open
|
| +** at the b-tree/pager level.
|
| +*/
|
| +void sqlite3CloseSavepoints(sqlite3 *db){
|
| + while( db->pSavepoint ){
|
| + Savepoint *pTmp = db->pSavepoint;
|
| + db->pSavepoint = pTmp->pNext;
|
| + sqlite3DbFree(db, pTmp);
|
| + }
|
| + db->nSavepoint = 0;
|
| + db->nStatement = 0;
|
| + db->isTransactionSavepoint = 0;
|
| +}
|
| +
|
| +/*
|
| +** Invoke the destructor function associated with FuncDef p, if any. Except,
|
| +** if this is not the last copy of the function, do not invoke it. Multiple
|
| +** copies of a single function are created when create_function() is called
|
| +** with SQLITE_ANY as the encoding.
|
| +*/
|
| +static void functionDestroy(sqlite3 *db, FuncDef *p){
|
| + FuncDestructor *pDestructor = p->pDestructor;
|
| + if( pDestructor ){
|
| + pDestructor->nRef--;
|
| + if( pDestructor->nRef==0 ){
|
| + pDestructor->xDestroy(pDestructor->pUserData);
|
| + sqlite3DbFree(db, pDestructor);
|
| + }
|
| + }
|
| +}
|
| +
|
| +/*
|
| +** Close an existing SQLite database
|
| +*/
|
| +int sqlite3_close(sqlite3 *db){
|
| + HashElem *i; /* Hash table iterator */
|
| + int j;
|
| +
|
| + if( !db ){
|
| + return SQLITE_OK;
|
| + }
|
| + if( !sqlite3SafetyCheckSickOrOk(db) ){
|
| + return SQLITE_MISUSE_BKPT;
|
| + }
|
| + sqlite3_mutex_enter(db->mutex);
|
| +
|
| + /* Force xDestroy calls on all virtual tables */
|
| + sqlite3ResetInternalSchema(db, -1);
|
| +
|
| + /* If a transaction is open, the ResetInternalSchema() call above
|
| + ** will not have called the xDisconnect() method on any virtual
|
| + ** tables in the db->aVTrans[] array. The following sqlite3VtabRollback()
|
| + ** call will do so. We need to do this before the check for active
|
| + ** SQL statements below, as the v-table implementation may be storing
|
| + ** some prepared statements internally.
|
| + */
|
| + sqlite3VtabRollback(db);
|
| +
|
| + /* If there are any outstanding VMs, return SQLITE_BUSY. */
|
| + if( db->pVdbe ){
|
| + sqlite3Error(db, SQLITE_BUSY,
|
| + "unable to close due to unfinalised statements");
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return SQLITE_BUSY;
|
| + }
|
| + assert( sqlite3SafetyCheckSickOrOk(db) );
|
| +
|
| + for(j=0; j<db->nDb; j++){
|
| + Btree *pBt = db->aDb[j].pBt;
|
| + if( pBt && sqlite3BtreeIsInBackup(pBt) ){
|
| + sqlite3Error(db, SQLITE_BUSY,
|
| + "unable to close due to unfinished backup operation");
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return SQLITE_BUSY;
|
| + }
|
| + }
|
| +
|
| + /* Free any outstanding Savepoint structures. */
|
| + sqlite3CloseSavepoints(db);
|
| +
|
| + for(j=0; j<db->nDb; j++){
|
| + struct Db *pDb = &db->aDb[j];
|
| + if( pDb->pBt ){
|
| + sqlite3BtreeClose(pDb->pBt);
|
| + pDb->pBt = 0;
|
| + if( j!=1 ){
|
| + pDb->pSchema = 0;
|
| + }
|
| + }
|
| + }
|
| + sqlite3ResetInternalSchema(db, -1);
|
| +
|
| + /* Tell the code in notify.c that the connection no longer holds any
|
| + ** locks and does not require any further unlock-notify callbacks.
|
| + */
|
| + sqlite3ConnectionClosed(db);
|
| +
|
| + assert( db->nDb<=2 );
|
| + assert( db->aDb==db->aDbStatic );
|
| + for(j=0; j<ArraySize(db->aFunc.a); j++){
|
| + FuncDef *pNext, *pHash, *p;
|
| + for(p=db->aFunc.a[j]; p; p=pHash){
|
| + pHash = p->pHash;
|
| + while( p ){
|
| + functionDestroy(db, p);
|
| + pNext = p->pNext;
|
| + sqlite3DbFree(db, p);
|
| + p = pNext;
|
| + }
|
| + }
|
| + }
|
| + for(i=sqliteHashFirst(&db->aCollSeq); i; i=sqliteHashNext(i)){
|
| + CollSeq *pColl = (CollSeq *)sqliteHashData(i);
|
| + /* Invoke any destructors registered for collation sequence user data. */
|
| + for(j=0; j<3; j++){
|
| + if( pColl[j].xDel ){
|
| + pColl[j].xDel(pColl[j].pUser);
|
| + }
|
| + }
|
| + sqlite3DbFree(db, pColl);
|
| + }
|
| + sqlite3HashClear(&db->aCollSeq);
|
| +#ifndef SQLITE_OMIT_VIRTUALTABLE
|
| + for(i=sqliteHashFirst(&db->aModule); i; i=sqliteHashNext(i)){
|
| + Module *pMod = (Module *)sqliteHashData(i);
|
| + if( pMod->xDestroy ){
|
| + pMod->xDestroy(pMod->pAux);
|
| + }
|
| + sqlite3DbFree(db, pMod);
|
| + }
|
| + sqlite3HashClear(&db->aModule);
|
| +#endif
|
| +
|
| + sqlite3Error(db, SQLITE_OK, 0); /* Deallocates any cached error strings. */
|
| + if( db->pErr ){
|
| + sqlite3ValueFree(db->pErr);
|
| + }
|
| + sqlite3CloseExtensions(db);
|
| +
|
| + db->magic = SQLITE_MAGIC_ERROR;
|
| +
|
| + /* The temp-database schema is allocated differently from the other schema
|
| + ** objects (using sqliteMalloc() directly, instead of sqlite3BtreeSchema()).
|
| + ** So it needs to be freed here. Todo: Why not roll the temp schema into
|
| + ** the same sqliteMalloc() as the one that allocates the database
|
| + ** structure?
|
| + */
|
| + sqlite3DbFree(db, db->aDb[1].pSchema);
|
| + sqlite3_mutex_leave(db->mutex);
|
| + db->magic = SQLITE_MAGIC_CLOSED;
|
| + sqlite3_mutex_free(db->mutex);
|
| + assert( db->lookaside.nOut==0 ); /* Fails on a lookaside memory leak */
|
| + if( db->lookaside.bMalloced ){
|
| + sqlite3_free(db->lookaside.pStart);
|
| + }
|
| + sqlite3_free(db);
|
| + return SQLITE_OK;
|
| +}
|
| +
|
| +/*
|
| +** Rollback all database files.
|
| +*/
|
| +void sqlite3RollbackAll(sqlite3 *db){
|
| + int i;
|
| + int inTrans = 0;
|
| + assert( sqlite3_mutex_held(db->mutex) );
|
| + sqlite3BeginBenignMalloc();
|
| + for(i=0; i<db->nDb; i++){
|
| + if( db->aDb[i].pBt ){
|
| + if( sqlite3BtreeIsInTrans(db->aDb[i].pBt) ){
|
| + inTrans = 1;
|
| + }
|
| + sqlite3BtreeRollback(db->aDb[i].pBt);
|
| + db->aDb[i].inTrans = 0;
|
| + }
|
| + }
|
| + sqlite3VtabRollback(db);
|
| + sqlite3EndBenignMalloc();
|
| +
|
| + if( db->flags&SQLITE_InternChanges ){
|
| + sqlite3ExpirePreparedStatements(db);
|
| + sqlite3ResetInternalSchema(db, -1);
|
| + }
|
| +
|
| + /* Any deferred constraint violations have now been resolved. */
|
| + db->nDeferredCons = 0;
|
| +
|
| + /* If one has been configured, invoke the rollback-hook callback */
|
| + if( db->xRollbackCallback && (inTrans || !db->autoCommit) ){
|
| + db->xRollbackCallback(db->pRollbackArg);
|
| + }
|
| +}
|
| +
|
| +/*
|
| +** Return a static string that describes the kind of error specified in the
|
| +** argument.
|
| +*/
|
| +const char *sqlite3ErrStr(int rc){
|
| + static const char* const aMsg[] = {
|
| + /* SQLITE_OK */ "not an error",
|
| + /* SQLITE_ERROR */ "SQL logic error or missing database",
|
| + /* SQLITE_INTERNAL */ 0,
|
| + /* SQLITE_PERM */ "access permission denied",
|
| + /* SQLITE_ABORT */ "callback requested query abort",
|
| + /* SQLITE_BUSY */ "database is locked",
|
| + /* SQLITE_LOCKED */ "database table is locked",
|
| + /* SQLITE_NOMEM */ "out of memory",
|
| + /* SQLITE_READONLY */ "attempt to write a readonly database",
|
| + /* SQLITE_INTERRUPT */ "interrupted",
|
| + /* SQLITE_IOERR */ "disk I/O error",
|
| + /* SQLITE_CORRUPT */ "database disk image is malformed",
|
| + /* SQLITE_NOTFOUND */ "unknown operation",
|
| + /* SQLITE_FULL */ "database or disk is full",
|
| + /* SQLITE_CANTOPEN */ "unable to open database file",
|
| + /* SQLITE_PROTOCOL */ "locking protocol",
|
| + /* SQLITE_EMPTY */ "table contains no data",
|
| + /* SQLITE_SCHEMA */ "database schema has changed",
|
| + /* SQLITE_TOOBIG */ "string or blob too big",
|
| + /* SQLITE_CONSTRAINT */ "constraint failed",
|
| + /* SQLITE_MISMATCH */ "datatype mismatch",
|
| + /* SQLITE_MISUSE */ "library routine called out of sequence",
|
| + /* SQLITE_NOLFS */ "large file support is disabled",
|
| + /* SQLITE_AUTH */ "authorization denied",
|
| + /* SQLITE_FORMAT */ "auxiliary database format error",
|
| + /* SQLITE_RANGE */ "bind or column index out of range",
|
| + /* SQLITE_NOTADB */ "file is encrypted or is not a database",
|
| + };
|
| + rc &= 0xff;
|
| + if( ALWAYS(rc>=0) && rc<(int)(sizeof(aMsg)/sizeof(aMsg[0])) && aMsg[rc]!=0 ){
|
| + return aMsg[rc];
|
| + }else{
|
| + return "unknown error";
|
| + }
|
| +}
|
| +
|
| +/*
|
| +** This routine implements a busy callback that sleeps and tries
|
| +** again until a timeout value is reached. The timeout value is
|
| +** an integer number of milliseconds passed in as the first
|
| +** argument.
|
| +*/
|
| +static int sqliteDefaultBusyCallback(
|
| + void *ptr, /* Database connection */
|
| + int count /* Number of times table has been busy */
|
| +){
|
| +#if SQLITE_OS_WIN || (defined(HAVE_USLEEP) && HAVE_USLEEP)
|
| + static const u8 delays[] =
|
| + { 1, 2, 5, 10, 15, 20, 25, 25, 25, 50, 50, 100 };
|
| + static const u8 totals[] =
|
| + { 0, 1, 3, 8, 18, 33, 53, 78, 103, 128, 178, 228 };
|
| +# define NDELAY ArraySize(delays)
|
| + sqlite3 *db = (sqlite3 *)ptr;
|
| + int timeout = db->busyTimeout;
|
| + int delay, prior;
|
| +
|
| + assert( count>=0 );
|
| + if( count < NDELAY ){
|
| + delay = delays[count];
|
| + prior = totals[count];
|
| + }else{
|
| + delay = delays[NDELAY-1];
|
| + prior = totals[NDELAY-1] + delay*(count-(NDELAY-1));
|
| + }
|
| + if( prior + delay > timeout ){
|
| + delay = timeout - prior;
|
| + if( delay<=0 ) return 0;
|
| + }
|
| + sqlite3OsSleep(db->pVfs, delay*1000);
|
| + return 1;
|
| +#else
|
| + sqlite3 *db = (sqlite3 *)ptr;
|
| + int timeout = ((sqlite3 *)ptr)->busyTimeout;
|
| + if( (count+1)*1000 > timeout ){
|
| + return 0;
|
| + }
|
| + sqlite3OsSleep(db->pVfs, 1000000);
|
| + return 1;
|
| +#endif
|
| +}
|
| +
|
| +/*
|
| +** Invoke the given busy handler.
|
| +**
|
| +** This routine is called when an operation failed with a lock.
|
| +** If this routine returns non-zero, the lock is retried. If it
|
| +** returns 0, the operation aborts with an SQLITE_BUSY error.
|
| +*/
|
| +int sqlite3InvokeBusyHandler(BusyHandler *p){
|
| + int rc;
|
| + if( NEVER(p==0) || p->xFunc==0 || p->nBusy<0 ) return 0;
|
| + rc = p->xFunc(p->pArg, p->nBusy);
|
| + if( rc==0 ){
|
| + p->nBusy = -1;
|
| + }else{
|
| + p->nBusy++;
|
| + }
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** This routine sets the busy callback for an Sqlite database to the
|
| +** given callback function with the given argument.
|
| +*/
|
| +int sqlite3_busy_handler(
|
| + sqlite3 *db,
|
| + int (*xBusy)(void*,int),
|
| + void *pArg
|
| +){
|
| + sqlite3_mutex_enter(db->mutex);
|
| + db->busyHandler.xFunc = xBusy;
|
| + db->busyHandler.pArg = pArg;
|
| + db->busyHandler.nBusy = 0;
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return SQLITE_OK;
|
| +}
|
| +
|
| +#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
|
| +/*
|
| +** This routine sets the progress callback for an Sqlite database to the
|
| +** given callback function with the given argument. The progress callback will
|
| +** be invoked every nOps opcodes.
|
| +*/
|
| +void sqlite3_progress_handler(
|
| + sqlite3 *db,
|
| + int nOps,
|
| + int (*xProgress)(void*),
|
| + void *pArg
|
| +){
|
| + sqlite3_mutex_enter(db->mutex);
|
| + if( nOps>0 ){
|
| + db->xProgress = xProgress;
|
| + db->nProgressOps = nOps;
|
| + db->pProgressArg = pArg;
|
| + }else{
|
| + db->xProgress = 0;
|
| + db->nProgressOps = 0;
|
| + db->pProgressArg = 0;
|
| + }
|
| + sqlite3_mutex_leave(db->mutex);
|
| +}
|
| +#endif
|
| +
|
| +
|
| +/*
|
| +** This routine installs a default busy handler that waits for the
|
| +** specified number of milliseconds before returning 0.
|
| +*/
|
| +int sqlite3_busy_timeout(sqlite3 *db, int ms){
|
| + if( ms>0 ){
|
| + db->busyTimeout = ms;
|
| + sqlite3_busy_handler(db, sqliteDefaultBusyCallback, (void*)db);
|
| + }else{
|
| + sqlite3_busy_handler(db, 0, 0);
|
| + }
|
| + return SQLITE_OK;
|
| +}
|
| +
|
| +/*
|
| +** Cause any pending operation to stop at its earliest opportunity.
|
| +*/
|
| +void sqlite3_interrupt(sqlite3 *db){
|
| + db->u1.isInterrupted = 1;
|
| +}
|
| +
|
| +
|
| +/*
|
| +** This function is exactly the same as sqlite3_create_function(), except
|
| +** that it is designed to be called by internal code. The difference is
|
| +** that if a malloc() fails in sqlite3_create_function(), an error code
|
| +** is returned and the mallocFailed flag cleared.
|
| +*/
|
| +int sqlite3CreateFunc(
|
| + sqlite3 *db,
|
| + const char *zFunctionName,
|
| + int nArg,
|
| + int enc,
|
| + void *pUserData,
|
| + void (*xFunc)(sqlite3_context*,int,sqlite3_value **),
|
| + void (*xStep)(sqlite3_context*,int,sqlite3_value **),
|
| + void (*xFinal)(sqlite3_context*),
|
| + FuncDestructor *pDestructor
|
| +){
|
| + FuncDef *p;
|
| + int nName;
|
| +
|
| + assert( sqlite3_mutex_held(db->mutex) );
|
| + if( zFunctionName==0 ||
|
| + (xFunc && (xFinal || xStep)) ||
|
| + (!xFunc && (xFinal && !xStep)) ||
|
| + (!xFunc && (!xFinal && xStep)) ||
|
| + (nArg<-1 || nArg>SQLITE_MAX_FUNCTION_ARG) ||
|
| + (255<(nName = sqlite3Strlen30( zFunctionName))) ){
|
| + return SQLITE_MISUSE_BKPT;
|
| + }
|
| +
|
| +#ifndef SQLITE_OMIT_UTF16
|
| + /* If SQLITE_UTF16 is specified as the encoding type, transform this
|
| + ** to one of SQLITE_UTF16LE or SQLITE_UTF16BE using the
|
| + ** SQLITE_UTF16NATIVE macro. SQLITE_UTF16 is not used internally.
|
| + **
|
| + ** If SQLITE_ANY is specified, add three versions of the function
|
| + ** to the hash table.
|
| + */
|
| + if( enc==SQLITE_UTF16 ){
|
| + enc = SQLITE_UTF16NATIVE;
|
| + }else if( enc==SQLITE_ANY ){
|
| + int rc;
|
| + rc = sqlite3CreateFunc(db, zFunctionName, nArg, SQLITE_UTF8,
|
| + pUserData, xFunc, xStep, xFinal, pDestructor);
|
| + if( rc==SQLITE_OK ){
|
| + rc = sqlite3CreateFunc(db, zFunctionName, nArg, SQLITE_UTF16LE,
|
| + pUserData, xFunc, xStep, xFinal, pDestructor);
|
| + }
|
| + if( rc!=SQLITE_OK ){
|
| + return rc;
|
| + }
|
| + enc = SQLITE_UTF16BE;
|
| + }
|
| +#else
|
| + enc = SQLITE_UTF8;
|
| +#endif
|
| +
|
| + /* Check if an existing function is being overridden or deleted. If so,
|
| + ** and there are active VMs, then return SQLITE_BUSY. If a function
|
| + ** is being overridden/deleted but there are no active VMs, allow the
|
| + ** operation to continue but invalidate all precompiled statements.
|
| + */
|
| + p = sqlite3FindFunction(db, zFunctionName, nName, nArg, (u8)enc, 0);
|
| + if( p && p->iPrefEnc==enc && p->nArg==nArg ){
|
| + if( db->activeVdbeCnt ){
|
| + sqlite3Error(db, SQLITE_BUSY,
|
| + "unable to delete/modify user-function due to active statements");
|
| + assert( !db->mallocFailed );
|
| + return SQLITE_BUSY;
|
| + }else{
|
| + sqlite3ExpirePreparedStatements(db);
|
| + }
|
| + }
|
| +
|
| + p = sqlite3FindFunction(db, zFunctionName, nName, nArg, (u8)enc, 1);
|
| + assert(p || db->mallocFailed);
|
| + if( !p ){
|
| + return SQLITE_NOMEM;
|
| + }
|
| +
|
| + /* If an older version of the function with a configured destructor is
|
| + ** being replaced invoke the destructor function here. */
|
| + functionDestroy(db, p);
|
| +
|
| + if( pDestructor ){
|
| + pDestructor->nRef++;
|
| + }
|
| + p->pDestructor = pDestructor;
|
| + p->flags = 0;
|
| + p->xFunc = xFunc;
|
| + p->xStep = xStep;
|
| + p->xFinalize = xFinal;
|
| + p->pUserData = pUserData;
|
| + p->nArg = (u16)nArg;
|
| + return SQLITE_OK;
|
| +}
|
| +
|
| +/*
|
| +** Create new user functions.
|
| +*/
|
| +int sqlite3_create_function(
|
| + sqlite3 *db,
|
| + const char *zFunc,
|
| + int nArg,
|
| + int enc,
|
| + void *p,
|
| + void (*xFunc)(sqlite3_context*,int,sqlite3_value **),
|
| + void (*xStep)(sqlite3_context*,int,sqlite3_value **),
|
| + void (*xFinal)(sqlite3_context*)
|
| +){
|
| + return sqlite3_create_function_v2(db, zFunc, nArg, enc, p, xFunc, xStep,
|
| + xFinal, 0);
|
| +}
|
| +
|
| +int sqlite3_create_function_v2(
|
| + sqlite3 *db,
|
| + const char *zFunc,
|
| + int nArg,
|
| + int enc,
|
| + void *p,
|
| + void (*xFunc)(sqlite3_context*,int,sqlite3_value **),
|
| + void (*xStep)(sqlite3_context*,int,sqlite3_value **),
|
| + void (*xFinal)(sqlite3_context*),
|
| + void (*xDestroy)(void *)
|
| +){
|
| + int rc = SQLITE_ERROR;
|
| + FuncDestructor *pArg = 0;
|
| + sqlite3_mutex_enter(db->mutex);
|
| + if( xDestroy ){
|
| + pArg = (FuncDestructor *)sqlite3DbMallocZero(db, sizeof(FuncDestructor));
|
| + if( !pArg ){
|
| + xDestroy(p);
|
| + goto out;
|
| + }
|
| + pArg->xDestroy = xDestroy;
|
| + pArg->pUserData = p;
|
| + }
|
| + rc = sqlite3CreateFunc(db, zFunc, nArg, enc, p, xFunc, xStep, xFinal, pArg);
|
| + if( pArg && pArg->nRef==0 ){
|
| + assert( rc!=SQLITE_OK );
|
| + xDestroy(p);
|
| + sqlite3DbFree(db, pArg);
|
| + }
|
| +
|
| + out:
|
| + rc = sqlite3ApiExit(db, rc);
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return rc;
|
| +}
|
| +
|
| +#ifndef SQLITE_OMIT_UTF16
|
| +int sqlite3_create_function16(
|
| + sqlite3 *db,
|
| + const void *zFunctionName,
|
| + int nArg,
|
| + int eTextRep,
|
| + void *p,
|
| + void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
|
| + void (*xStep)(sqlite3_context*,int,sqlite3_value**),
|
| + void (*xFinal)(sqlite3_context*)
|
| +){
|
| + int rc;
|
| + char *zFunc8;
|
| + sqlite3_mutex_enter(db->mutex);
|
| + assert( !db->mallocFailed );
|
| + zFunc8 = sqlite3Utf16to8(db, zFunctionName, -1, SQLITE_UTF16NATIVE);
|
| + rc = sqlite3CreateFunc(db, zFunc8, nArg, eTextRep, p, xFunc, xStep, xFinal,0);
|
| + sqlite3DbFree(db, zFunc8);
|
| + rc = sqlite3ApiExit(db, rc);
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return rc;
|
| +}
|
| +#endif
|
| +
|
| +
|
| +/*
|
| +** Declare that a function has been overloaded by a virtual table.
|
| +**
|
| +** If the function already exists as a regular global function, then
|
| +** this routine is a no-op. If the function does not exist, then create
|
| +** a new one that always throws a run-time error.
|
| +**
|
| +** When virtual tables intend to provide an overloaded function, they
|
| +** should call this routine to make sure the global function exists.
|
| +** A global function must exist in order for name resolution to work
|
| +** properly.
|
| +*/
|
| +int sqlite3_overload_function(
|
| + sqlite3 *db,
|
| + const char *zName,
|
| + int nArg
|
| +){
|
| + int nName = sqlite3Strlen30(zName);
|
| + int rc;
|
| + sqlite3_mutex_enter(db->mutex);
|
| + if( sqlite3FindFunction(db, zName, nName, nArg, SQLITE_UTF8, 0)==0 ){
|
| + sqlite3CreateFunc(db, zName, nArg, SQLITE_UTF8,
|
| + 0, sqlite3InvalidFunction, 0, 0, 0);
|
| + }
|
| + rc = sqlite3ApiExit(db, SQLITE_OK);
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return rc;
|
| +}
|
| +
|
| +#ifndef SQLITE_OMIT_TRACE
|
| +/*
|
| +** Register a trace function. The pArg from the previously registered trace
|
| +** is returned.
|
| +**
|
| +** A NULL trace function means that no tracing is executes. A non-NULL
|
| +** trace is a pointer to a function that is invoked at the start of each
|
| +** SQL statement.
|
| +*/
|
| +void *sqlite3_trace(sqlite3 *db, void (*xTrace)(void*,const char*), void *pArg){
|
| + void *pOld;
|
| + sqlite3_mutex_enter(db->mutex);
|
| + pOld = db->pTraceArg;
|
| + db->xTrace = xTrace;
|
| + db->pTraceArg = pArg;
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return pOld;
|
| +}
|
| +/*
|
| +** Register a profile function. The pArg from the previously registered
|
| +** profile function is returned.
|
| +**
|
| +** A NULL profile function means that no profiling is executes. A non-NULL
|
| +** profile is a pointer to a function that is invoked at the conclusion of
|
| +** each SQL statement that is run.
|
| +*/
|
| +void *sqlite3_profile(
|
| + sqlite3 *db,
|
| + void (*xProfile)(void*,const char*,sqlite_uint64),
|
| + void *pArg
|
| +){
|
| + void *pOld;
|
| + sqlite3_mutex_enter(db->mutex);
|
| + pOld = db->pProfileArg;
|
| + db->xProfile = xProfile;
|
| + db->pProfileArg = pArg;
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return pOld;
|
| +}
|
| +#endif /* SQLITE_OMIT_TRACE */
|
| +
|
| +/*** EXPERIMENTAL ***
|
| +**
|
| +** Register a function to be invoked when a transaction comments.
|
| +** If the invoked function returns non-zero, then the commit becomes a
|
| +** rollback.
|
| +*/
|
| +void *sqlite3_commit_hook(
|
| + sqlite3 *db, /* Attach the hook to this database */
|
| + int (*xCallback)(void*), /* Function to invoke on each commit */
|
| + void *pArg /* Argument to the function */
|
| +){
|
| + void *pOld;
|
| + sqlite3_mutex_enter(db->mutex);
|
| + pOld = db->pCommitArg;
|
| + db->xCommitCallback = xCallback;
|
| + db->pCommitArg = pArg;
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return pOld;
|
| +}
|
| +
|
| +/*
|
| +** Register a callback to be invoked each time a row is updated,
|
| +** inserted or deleted using this database connection.
|
| +*/
|
| +void *sqlite3_update_hook(
|
| + sqlite3 *db, /* Attach the hook to this database */
|
| + void (*xCallback)(void*,int,char const *,char const *,sqlite_int64),
|
| + void *pArg /* Argument to the function */
|
| +){
|
| + void *pRet;
|
| + sqlite3_mutex_enter(db->mutex);
|
| + pRet = db->pUpdateArg;
|
| + db->xUpdateCallback = xCallback;
|
| + db->pUpdateArg = pArg;
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return pRet;
|
| +}
|
| +
|
| +/*
|
| +** Register a callback to be invoked each time a transaction is rolled
|
| +** back by this database connection.
|
| +*/
|
| +void *sqlite3_rollback_hook(
|
| + sqlite3 *db, /* Attach the hook to this database */
|
| + void (*xCallback)(void*), /* Callback function */
|
| + void *pArg /* Argument to the function */
|
| +){
|
| + void *pRet;
|
| + sqlite3_mutex_enter(db->mutex);
|
| + pRet = db->pRollbackArg;
|
| + db->xRollbackCallback = xCallback;
|
| + db->pRollbackArg = pArg;
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return pRet;
|
| +}
|
| +
|
| +#ifndef SQLITE_OMIT_WAL
|
| +/*
|
| +** The sqlite3_wal_hook() callback registered by sqlite3_wal_autocheckpoint().
|
| +** Invoke sqlite3_wal_checkpoint if the number of frames in the log file
|
| +** is greater than sqlite3.pWalArg cast to an integer (the value configured by
|
| +** wal_autocheckpoint()).
|
| +*/
|
| +int sqlite3WalDefaultHook(
|
| + void *pClientData, /* Argument */
|
| + sqlite3 *db, /* Connection */
|
| + const char *zDb, /* Database */
|
| + int nFrame /* Size of WAL */
|
| +){
|
| + if( nFrame>=SQLITE_PTR_TO_INT(pClientData) ){
|
| + sqlite3BeginBenignMalloc();
|
| + sqlite3_wal_checkpoint(db, zDb);
|
| + sqlite3EndBenignMalloc();
|
| + }
|
| + return SQLITE_OK;
|
| +}
|
| +#endif /* SQLITE_OMIT_WAL */
|
| +
|
| +/*
|
| +** Configure an sqlite3_wal_hook() callback to automatically checkpoint
|
| +** a database after committing a transaction if there are nFrame or
|
| +** more frames in the log file. Passing zero or a negative value as the
|
| +** nFrame parameter disables automatic checkpoints entirely.
|
| +**
|
| +** The callback registered by this function replaces any existing callback
|
| +** registered using sqlite3_wal_hook(). Likewise, registering a callback
|
| +** using sqlite3_wal_hook() disables the automatic checkpoint mechanism
|
| +** configured by this function.
|
| +*/
|
| +int sqlite3_wal_autocheckpoint(sqlite3 *db, int nFrame){
|
| +#ifdef SQLITE_OMIT_WAL
|
| + UNUSED_PARAMETER(db);
|
| + UNUSED_PARAMETER(nFrame);
|
| +#else
|
| + if( nFrame>0 ){
|
| + sqlite3_wal_hook(db, sqlite3WalDefaultHook, SQLITE_INT_TO_PTR(nFrame));
|
| + }else{
|
| + sqlite3_wal_hook(db, 0, 0);
|
| + }
|
| +#endif
|
| + return SQLITE_OK;
|
| +}
|
| +
|
| +/*
|
| +** Register a callback to be invoked each time a transaction is written
|
| +** into the write-ahead-log by this database connection.
|
| +*/
|
| +void *sqlite3_wal_hook(
|
| + sqlite3 *db, /* Attach the hook to this db handle */
|
| + int(*xCallback)(void *, sqlite3*, const char*, int),
|
| + void *pArg /* First argument passed to xCallback() */
|
| +){
|
| +#ifndef SQLITE_OMIT_WAL
|
| + void *pRet;
|
| + sqlite3_mutex_enter(db->mutex);
|
| + pRet = db->pWalArg;
|
| + db->xWalCallback = xCallback;
|
| + db->pWalArg = pArg;
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return pRet;
|
| +#else
|
| + return 0;
|
| +#endif
|
| +}
|
| +
|
| +/*
|
| +** Checkpoint database zDb.
|
| +*/
|
| +int sqlite3_wal_checkpoint_v2(
|
| + sqlite3 *db, /* Database handle */
|
| + const char *zDb, /* Name of attached database (or NULL) */
|
| + int eMode, /* SQLITE_CHECKPOINT_* value */
|
| + int *pnLog, /* OUT: Size of WAL log in frames */
|
| + int *pnCkpt /* OUT: Total number of frames checkpointed */
|
| +){
|
| +#ifdef SQLITE_OMIT_WAL
|
| + return SQLITE_OK;
|
| +#else
|
| + int rc; /* Return code */
|
| + int iDb = SQLITE_MAX_ATTACHED; /* sqlite3.aDb[] index of db to checkpoint */
|
| +
|
| + /* Initialize the output variables to -1 in case an error occurs. */
|
| + if( pnLog ) *pnLog = -1;
|
| + if( pnCkpt ) *pnCkpt = -1;
|
| +
|
| + assert( SQLITE_CHECKPOINT_FULL>SQLITE_CHECKPOINT_PASSIVE );
|
| + assert( SQLITE_CHECKPOINT_FULL<SQLITE_CHECKPOINT_RESTART );
|
| + assert( SQLITE_CHECKPOINT_PASSIVE+2==SQLITE_CHECKPOINT_RESTART );
|
| + if( eMode<SQLITE_CHECKPOINT_PASSIVE || eMode>SQLITE_CHECKPOINT_RESTART ){
|
| + return SQLITE_MISUSE;
|
| + }
|
| +
|
| + sqlite3_mutex_enter(db->mutex);
|
| + if( zDb && zDb[0] ){
|
| + iDb = sqlite3FindDbName(db, zDb);
|
| + }
|
| + if( iDb<0 ){
|
| + rc = SQLITE_ERROR;
|
| + sqlite3Error(db, SQLITE_ERROR, "unknown database: %s", zDb);
|
| + }else{
|
| + rc = sqlite3Checkpoint(db, iDb, eMode, pnLog, pnCkpt);
|
| + sqlite3Error(db, rc, 0);
|
| + }
|
| + rc = sqlite3ApiExit(db, rc);
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return rc;
|
| +#endif
|
| +}
|
| +
|
| +
|
| +/*
|
| +** Checkpoint database zDb. If zDb is NULL, or if the buffer zDb points
|
| +** to contains a zero-length string, all attached databases are
|
| +** checkpointed.
|
| +*/
|
| +int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb){
|
| + return sqlite3_wal_checkpoint_v2(db, zDb, SQLITE_CHECKPOINT_PASSIVE, 0, 0);
|
| +}
|
| +
|
| +#ifndef SQLITE_OMIT_WAL
|
| +/*
|
| +** Run a checkpoint on database iDb. This is a no-op if database iDb is
|
| +** not currently open in WAL mode.
|
| +**
|
| +** If a transaction is open on the database being checkpointed, this
|
| +** function returns SQLITE_LOCKED and a checkpoint is not attempted. If
|
| +** an error occurs while running the checkpoint, an SQLite error code is
|
| +** returned (i.e. SQLITE_IOERR). Otherwise, SQLITE_OK.
|
| +**
|
| +** The mutex on database handle db should be held by the caller. The mutex
|
| +** associated with the specific b-tree being checkpointed is taken by
|
| +** this function while the checkpoint is running.
|
| +**
|
| +** If iDb is passed SQLITE_MAX_ATTACHED, then all attached databases are
|
| +** checkpointed. If an error is encountered it is returned immediately -
|
| +** no attempt is made to checkpoint any remaining databases.
|
| +**
|
| +** Parameter eMode is one of SQLITE_CHECKPOINT_PASSIVE, FULL or RESTART.
|
| +*/
|
| +int sqlite3Checkpoint(sqlite3 *db, int iDb, int eMode, int *pnLog, int *pnCkpt){
|
| + int rc = SQLITE_OK; /* Return code */
|
| + int i; /* Used to iterate through attached dbs */
|
| + int bBusy = 0; /* True if SQLITE_BUSY has been encountered */
|
| +
|
| + assert( sqlite3_mutex_held(db->mutex) );
|
| + assert( !pnLog || *pnLog==-1 );
|
| + assert( !pnCkpt || *pnCkpt==-1 );
|
| +
|
| + for(i=0; i<db->nDb && rc==SQLITE_OK; i++){
|
| + if( i==iDb || iDb==SQLITE_MAX_ATTACHED ){
|
| + rc = sqlite3BtreeCheckpoint(db->aDb[i].pBt, eMode, pnLog, pnCkpt);
|
| + pnLog = 0;
|
| + pnCkpt = 0;
|
| + if( rc==SQLITE_BUSY ){
|
| + bBusy = 1;
|
| + rc = SQLITE_OK;
|
| + }
|
| + }
|
| + }
|
| +
|
| + return (rc==SQLITE_OK && bBusy) ? SQLITE_BUSY : rc;
|
| +}
|
| +#endif /* SQLITE_OMIT_WAL */
|
| +
|
| +/*
|
| +** This function returns true if main-memory should be used instead of
|
| +** a temporary file for transient pager files and statement journals.
|
| +** The value returned depends on the value of db->temp_store (runtime
|
| +** parameter) and the compile time value of SQLITE_TEMP_STORE. The
|
| +** following table describes the relationship between these two values
|
| +** and this functions return value.
|
| +**
|
| +** SQLITE_TEMP_STORE db->temp_store Location of temporary database
|
| +** ----------------- -------------- ------------------------------
|
| +** 0 any file (return 0)
|
| +** 1 1 file (return 0)
|
| +** 1 2 memory (return 1)
|
| +** 1 0 file (return 0)
|
| +** 2 1 file (return 0)
|
| +** 2 2 memory (return 1)
|
| +** 2 0 memory (return 1)
|
| +** 3 any memory (return 1)
|
| +*/
|
| +int sqlite3TempInMemory(const sqlite3 *db){
|
| +#if SQLITE_TEMP_STORE==1
|
| + return ( db->temp_store==2 );
|
| +#endif
|
| +#if SQLITE_TEMP_STORE==2
|
| + return ( db->temp_store!=1 );
|
| +#endif
|
| +#if SQLITE_TEMP_STORE==3
|
| + return 1;
|
| +#endif
|
| +#if SQLITE_TEMP_STORE<1 || SQLITE_TEMP_STORE>3
|
| + return 0;
|
| +#endif
|
| +}
|
| +
|
| +/*
|
| +** Return UTF-8 encoded English language explanation of the most recent
|
| +** error.
|
| +*/
|
| +const char *sqlite3_errmsg(sqlite3 *db){
|
| + const char *z;
|
| + if( !db ){
|
| + return sqlite3ErrStr(SQLITE_NOMEM);
|
| + }
|
| + if( !sqlite3SafetyCheckSickOrOk(db) ){
|
| + return sqlite3ErrStr(SQLITE_MISUSE_BKPT);
|
| + }
|
| + sqlite3_mutex_enter(db->mutex);
|
| + if( db->mallocFailed ){
|
| + z = sqlite3ErrStr(SQLITE_NOMEM);
|
| + }else{
|
| + z = (char*)sqlite3_value_text(db->pErr);
|
| + assert( !db->mallocFailed );
|
| + if( z==0 ){
|
| + z = sqlite3ErrStr(db->errCode);
|
| + }
|
| + }
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return z;
|
| +}
|
| +
|
| +#ifndef SQLITE_OMIT_UTF16
|
| +/*
|
| +** Return UTF-16 encoded English language explanation of the most recent
|
| +** error.
|
| +*/
|
| +const void *sqlite3_errmsg16(sqlite3 *db){
|
| + static const u16 outOfMem[] = {
|
| + 'o', 'u', 't', ' ', 'o', 'f', ' ', 'm', 'e', 'm', 'o', 'r', 'y', 0
|
| + };
|
| + static const u16 misuse[] = {
|
| + 'l', 'i', 'b', 'r', 'a', 'r', 'y', ' ',
|
| + 'r', 'o', 'u', 't', 'i', 'n', 'e', ' ',
|
| + 'c', 'a', 'l', 'l', 'e', 'd', ' ',
|
| + 'o', 'u', 't', ' ',
|
| + 'o', 'f', ' ',
|
| + 's', 'e', 'q', 'u', 'e', 'n', 'c', 'e', 0
|
| + };
|
| +
|
| + const void *z;
|
| + if( !db ){
|
| + return (void *)outOfMem;
|
| + }
|
| + if( !sqlite3SafetyCheckSickOrOk(db) ){
|
| + return (void *)misuse;
|
| + }
|
| + sqlite3_mutex_enter(db->mutex);
|
| + if( db->mallocFailed ){
|
| + z = (void *)outOfMem;
|
| + }else{
|
| + z = sqlite3_value_text16(db->pErr);
|
| + if( z==0 ){
|
| + sqlite3ValueSetStr(db->pErr, -1, sqlite3ErrStr(db->errCode),
|
| + SQLITE_UTF8, SQLITE_STATIC);
|
| + z = sqlite3_value_text16(db->pErr);
|
| + }
|
| + /* A malloc() may have failed within the call to sqlite3_value_text16()
|
| + ** above. If this is the case, then the db->mallocFailed flag needs to
|
| + ** be cleared before returning. Do this directly, instead of via
|
| + ** sqlite3ApiExit(), to avoid setting the database handle error message.
|
| + */
|
| + db->mallocFailed = 0;
|
| + }
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return z;
|
| +}
|
| +#endif /* SQLITE_OMIT_UTF16 */
|
| +
|
| +/*
|
| +** Return the most recent error code generated by an SQLite routine. If NULL is
|
| +** passed to this function, we assume a malloc() failed during sqlite3_open().
|
| +*/
|
| +int sqlite3_errcode(sqlite3 *db){
|
| + if( db && !sqlite3SafetyCheckSickOrOk(db) ){
|
| + return SQLITE_MISUSE_BKPT;
|
| + }
|
| + if( !db || db->mallocFailed ){
|
| + return SQLITE_NOMEM;
|
| + }
|
| + return db->errCode & db->errMask;
|
| +}
|
| +int sqlite3_extended_errcode(sqlite3 *db){
|
| + if( db && !sqlite3SafetyCheckSickOrOk(db) ){
|
| + return SQLITE_MISUSE_BKPT;
|
| + }
|
| + if( !db || db->mallocFailed ){
|
| + return SQLITE_NOMEM;
|
| + }
|
| + return db->errCode;
|
| +}
|
| +
|
| +/*
|
| +** Create a new collating function for database "db". The name is zName
|
| +** and the encoding is enc.
|
| +*/
|
| +static int createCollation(
|
| + sqlite3* db,
|
| + const char *zName,
|
| + u8 enc,
|
| + u8 collType,
|
| + void* pCtx,
|
| + int(*xCompare)(void*,int,const void*,int,const void*),
|
| + void(*xDel)(void*)
|
| +){
|
| + CollSeq *pColl;
|
| + int enc2;
|
| + int nName = sqlite3Strlen30(zName);
|
| +
|
| + assert( sqlite3_mutex_held(db->mutex) );
|
| +
|
| + /* If SQLITE_UTF16 is specified as the encoding type, transform this
|
| + ** to one of SQLITE_UTF16LE or SQLITE_UTF16BE using the
|
| + ** SQLITE_UTF16NATIVE macro. SQLITE_UTF16 is not used internally.
|
| + */
|
| + enc2 = enc;
|
| + testcase( enc2==SQLITE_UTF16 );
|
| + testcase( enc2==SQLITE_UTF16_ALIGNED );
|
| + if( enc2==SQLITE_UTF16 || enc2==SQLITE_UTF16_ALIGNED ){
|
| + enc2 = SQLITE_UTF16NATIVE;
|
| + }
|
| + if( enc2<SQLITE_UTF8 || enc2>SQLITE_UTF16BE ){
|
| + return SQLITE_MISUSE_BKPT;
|
| + }
|
| +
|
| + /* Check if this call is removing or replacing an existing collation
|
| + ** sequence. If so, and there are active VMs, return busy. If there
|
| + ** are no active VMs, invalidate any pre-compiled statements.
|
| + */
|
| + pColl = sqlite3FindCollSeq(db, (u8)enc2, zName, 0);
|
| + if( pColl && pColl->xCmp ){
|
| + if( db->activeVdbeCnt ){
|
| + sqlite3Error(db, SQLITE_BUSY,
|
| + "unable to delete/modify collation sequence due to active statements");
|
| + return SQLITE_BUSY;
|
| + }
|
| + sqlite3ExpirePreparedStatements(db);
|
| +
|
| + /* If collation sequence pColl was created directly by a call to
|
| + ** sqlite3_create_collation, and not generated by synthCollSeq(),
|
| + ** then any copies made by synthCollSeq() need to be invalidated.
|
| + ** Also, collation destructor - CollSeq.xDel() - function may need
|
| + ** to be called.
|
| + */
|
| + if( (pColl->enc & ~SQLITE_UTF16_ALIGNED)==enc2 ){
|
| + CollSeq *aColl = sqlite3HashFind(&db->aCollSeq, zName, nName);
|
| + int j;
|
| + for(j=0; j<3; j++){
|
| + CollSeq *p = &aColl[j];
|
| + if( p->enc==pColl->enc ){
|
| + if( p->xDel ){
|
| + p->xDel(p->pUser);
|
| + }
|
| + p->xCmp = 0;
|
| + }
|
| + }
|
| + }
|
| + }
|
| +
|
| + pColl = sqlite3FindCollSeq(db, (u8)enc2, zName, 1);
|
| + if( pColl==0 ) return SQLITE_NOMEM;
|
| + pColl->xCmp = xCompare;
|
| + pColl->pUser = pCtx;
|
| + pColl->xDel = xDel;
|
| + pColl->enc = (u8)(enc2 | (enc & SQLITE_UTF16_ALIGNED));
|
| + pColl->type = collType;
|
| + sqlite3Error(db, SQLITE_OK, 0);
|
| + return SQLITE_OK;
|
| +}
|
| +
|
| +
|
| +/*
|
| +** This array defines hard upper bounds on limit values. The
|
| +** initializer must be kept in sync with the SQLITE_LIMIT_*
|
| +** #defines in sqlite3.h.
|
| +*/
|
| +static const int aHardLimit[] = {
|
| + SQLITE_MAX_LENGTH,
|
| + SQLITE_MAX_SQL_LENGTH,
|
| + SQLITE_MAX_COLUMN,
|
| + SQLITE_MAX_EXPR_DEPTH,
|
| + SQLITE_MAX_COMPOUND_SELECT,
|
| + SQLITE_MAX_VDBE_OP,
|
| + SQLITE_MAX_FUNCTION_ARG,
|
| + SQLITE_MAX_ATTACHED,
|
| + SQLITE_MAX_LIKE_PATTERN_LENGTH,
|
| + SQLITE_MAX_VARIABLE_NUMBER,
|
| + SQLITE_MAX_TRIGGER_DEPTH,
|
| +};
|
| +
|
| +/*
|
| +** Make sure the hard limits are set to reasonable values
|
| +*/
|
| +#if SQLITE_MAX_LENGTH<100
|
| +# error SQLITE_MAX_LENGTH must be at least 100
|
| +#endif
|
| +#if SQLITE_MAX_SQL_LENGTH<100
|
| +# error SQLITE_MAX_SQL_LENGTH must be at least 100
|
| +#endif
|
| +#if SQLITE_MAX_SQL_LENGTH>SQLITE_MAX_LENGTH
|
| +# error SQLITE_MAX_SQL_LENGTH must not be greater than SQLITE_MAX_LENGTH
|
| +#endif
|
| +#if SQLITE_MAX_COMPOUND_SELECT<2
|
| +# error SQLITE_MAX_COMPOUND_SELECT must be at least 2
|
| +#endif
|
| +#if SQLITE_MAX_VDBE_OP<40
|
| +# error SQLITE_MAX_VDBE_OP must be at least 40
|
| +#endif
|
| +#if SQLITE_MAX_FUNCTION_ARG<0 || SQLITE_MAX_FUNCTION_ARG>1000
|
| +# error SQLITE_MAX_FUNCTION_ARG must be between 0 and 1000
|
| +#endif
|
| +#if SQLITE_MAX_ATTACHED<0 || SQLITE_MAX_ATTACHED>62
|
| +# error SQLITE_MAX_ATTACHED must be between 0 and 62
|
| +#endif
|
| +#if SQLITE_MAX_LIKE_PATTERN_LENGTH<1
|
| +# error SQLITE_MAX_LIKE_PATTERN_LENGTH must be at least 1
|
| +#endif
|
| +#if SQLITE_MAX_COLUMN>32767
|
| +# error SQLITE_MAX_COLUMN must not exceed 32767
|
| +#endif
|
| +#if SQLITE_MAX_TRIGGER_DEPTH<1
|
| +# error SQLITE_MAX_TRIGGER_DEPTH must be at least 1
|
| +#endif
|
| +
|
| +
|
| +/*
|
| +** Change the value of a limit. Report the old value.
|
| +** If an invalid limit index is supplied, report -1.
|
| +** Make no changes but still report the old value if the
|
| +** new limit is negative.
|
| +**
|
| +** A new lower limit does not shrink existing constructs.
|
| +** It merely prevents new constructs that exceed the limit
|
| +** from forming.
|
| +*/
|
| +int sqlite3_limit(sqlite3 *db, int limitId, int newLimit){
|
| + int oldLimit;
|
| +
|
| +
|
| + /* EVIDENCE-OF: R-30189-54097 For each limit category SQLITE_LIMIT_NAME
|
| + ** there is a hard upper bound set at compile-time by a C preprocessor
|
| + ** macro called SQLITE_MAX_NAME. (The "_LIMIT_" in the name is changed to
|
| + ** "_MAX_".)
|
| + */
|
| + assert( aHardLimit[SQLITE_LIMIT_LENGTH]==SQLITE_MAX_LENGTH );
|
| + assert( aHardLimit[SQLITE_LIMIT_SQL_LENGTH]==SQLITE_MAX_SQL_LENGTH );
|
| + assert( aHardLimit[SQLITE_LIMIT_COLUMN]==SQLITE_MAX_COLUMN );
|
| + assert( aHardLimit[SQLITE_LIMIT_EXPR_DEPTH]==SQLITE_MAX_EXPR_DEPTH );
|
| + assert( aHardLimit[SQLITE_LIMIT_COMPOUND_SELECT]==SQLITE_MAX_COMPOUND_SELECT);
|
| + assert( aHardLimit[SQLITE_LIMIT_VDBE_OP]==SQLITE_MAX_VDBE_OP );
|
| + assert( aHardLimit[SQLITE_LIMIT_FUNCTION_ARG]==SQLITE_MAX_FUNCTION_ARG );
|
| + assert( aHardLimit[SQLITE_LIMIT_ATTACHED]==SQLITE_MAX_ATTACHED );
|
| + assert( aHardLimit[SQLITE_LIMIT_LIKE_PATTERN_LENGTH]==
|
| + SQLITE_MAX_LIKE_PATTERN_LENGTH );
|
| + assert( aHardLimit[SQLITE_LIMIT_VARIABLE_NUMBER]==SQLITE_MAX_VARIABLE_NUMBER);
|
| + assert( aHardLimit[SQLITE_LIMIT_TRIGGER_DEPTH]==SQLITE_MAX_TRIGGER_DEPTH );
|
| + assert( SQLITE_LIMIT_TRIGGER_DEPTH==(SQLITE_N_LIMIT-1) );
|
| +
|
| +
|
| + if( limitId<0 || limitId>=SQLITE_N_LIMIT ){
|
| + return -1;
|
| + }
|
| + oldLimit = db->aLimit[limitId];
|
| + if( newLimit>=0 ){ /* IMP: R-52476-28732 */
|
| + if( newLimit>aHardLimit[limitId] ){
|
| + newLimit = aHardLimit[limitId]; /* IMP: R-51463-25634 */
|
| + }
|
| + db->aLimit[limitId] = newLimit;
|
| + }
|
| + return oldLimit; /* IMP: R-53341-35419 */
|
| +}
|
| +
|
| +/*
|
| +** This routine does the work of opening a database on behalf of
|
| +** sqlite3_open() and sqlite3_open16(). The database filename "zFilename"
|
| +** is UTF-8 encoded.
|
| +*/
|
| +static int openDatabase(
|
| + const char *zFilename, /* Database filename UTF-8 encoded */
|
| + sqlite3 **ppDb, /* OUT: Returned database handle */
|
| + unsigned flags, /* Operational flags */
|
| + const char *zVfs /* Name of the VFS to use */
|
| +){
|
| + sqlite3 *db;
|
| + int rc;
|
| + int isThreadsafe;
|
| +
|
| + *ppDb = 0;
|
| +#ifndef SQLITE_OMIT_AUTOINIT
|
| + rc = sqlite3_initialize();
|
| + if( rc ) return rc;
|
| +#endif
|
| +
|
| + /* Only allow sensible combinations of bits in the flags argument.
|
| + ** Throw an error if any non-sense combination is used. If we
|
| + ** do not block illegal combinations here, it could trigger
|
| + ** assert() statements in deeper layers. Sensible combinations
|
| + ** are:
|
| + **
|
| + ** 1: SQLITE_OPEN_READONLY
|
| + ** 2: SQLITE_OPEN_READWRITE
|
| + ** 6: SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE
|
| + */
|
| + assert( SQLITE_OPEN_READONLY == 0x01 );
|
| + assert( SQLITE_OPEN_READWRITE == 0x02 );
|
| + assert( SQLITE_OPEN_CREATE == 0x04 );
|
| + testcase( (1<<(flags&7))==0x02 ); /* READONLY */
|
| + testcase( (1<<(flags&7))==0x04 ); /* READWRITE */
|
| + testcase( (1<<(flags&7))==0x40 ); /* READWRITE | CREATE */
|
| + if( ((1<<(flags&7)) & 0x46)==0 ) return SQLITE_MISUSE;
|
| +
|
| + if( sqlite3GlobalConfig.bCoreMutex==0 ){
|
| + isThreadsafe = 0;
|
| + }else if( flags & SQLITE_OPEN_NOMUTEX ){
|
| + isThreadsafe = 0;
|
| + }else if( flags & SQLITE_OPEN_FULLMUTEX ){
|
| + isThreadsafe = 1;
|
| + }else{
|
| + isThreadsafe = sqlite3GlobalConfig.bFullMutex;
|
| + }
|
| + if( flags & SQLITE_OPEN_PRIVATECACHE ){
|
| + flags &= ~SQLITE_OPEN_SHAREDCACHE;
|
| + }else if( sqlite3GlobalConfig.sharedCacheEnabled ){
|
| + flags |= SQLITE_OPEN_SHAREDCACHE;
|
| + }
|
| +
|
| + /* Remove harmful bits from the flags parameter
|
| + **
|
| + ** The SQLITE_OPEN_NOMUTEX and SQLITE_OPEN_FULLMUTEX flags were
|
| + ** dealt with in the previous code block. Besides these, the only
|
| + ** valid input flags for sqlite3_open_v2() are SQLITE_OPEN_READONLY,
|
| + ** SQLITE_OPEN_READWRITE, SQLITE_OPEN_CREATE, SQLITE_OPEN_SHAREDCACHE,
|
| + ** SQLITE_OPEN_PRIVATECACHE, and some reserved bits. Silently mask
|
| + ** off all other flags.
|
| + */
|
| + flags &= ~( SQLITE_OPEN_DELETEONCLOSE |
|
| + SQLITE_OPEN_EXCLUSIVE |
|
| + SQLITE_OPEN_MAIN_DB |
|
| + SQLITE_OPEN_TEMP_DB |
|
| + SQLITE_OPEN_TRANSIENT_DB |
|
| + SQLITE_OPEN_MAIN_JOURNAL |
|
| + SQLITE_OPEN_TEMP_JOURNAL |
|
| + SQLITE_OPEN_SUBJOURNAL |
|
| + SQLITE_OPEN_MASTER_JOURNAL |
|
| + SQLITE_OPEN_NOMUTEX |
|
| + SQLITE_OPEN_FULLMUTEX |
|
| + SQLITE_OPEN_WAL
|
| + );
|
| +
|
| + /* Allocate the sqlite data structure */
|
| + db = sqlite3MallocZero( sizeof(sqlite3) );
|
| + if( db==0 ) goto opendb_out;
|
| + if( isThreadsafe ){
|
| + db->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_RECURSIVE);
|
| + if( db->mutex==0 ){
|
| + sqlite3_free(db);
|
| + db = 0;
|
| + goto opendb_out;
|
| + }
|
| + }
|
| + sqlite3_mutex_enter(db->mutex);
|
| + db->errMask = 0xff;
|
| + db->nDb = 2;
|
| + db->magic = SQLITE_MAGIC_BUSY;
|
| + db->aDb = db->aDbStatic;
|
| +
|
| + assert( sizeof(db->aLimit)==sizeof(aHardLimit) );
|
| + memcpy(db->aLimit, aHardLimit, sizeof(db->aLimit));
|
| + db->autoCommit = 1;
|
| + db->nextAutovac = -1;
|
| + db->nextPagesize = 0;
|
| + db->flags |= SQLITE_ShortColNames | SQLITE_AutoIndex | SQLITE_EnableTrigger
|
| +#if SQLITE_DEFAULT_FILE_FORMAT<4
|
| + | SQLITE_LegacyFileFmt
|
| +#endif
|
| +#ifdef SQLITE_ENABLE_LOAD_EXTENSION
|
| + | SQLITE_LoadExtension
|
| +#endif
|
| +#if SQLITE_DEFAULT_RECURSIVE_TRIGGERS
|
| + | SQLITE_RecTriggers
|
| +#endif
|
| +#if defined(SQLITE_DEFAULT_FOREIGN_KEYS) && SQLITE_DEFAULT_FOREIGN_KEYS
|
| + | SQLITE_ForeignKeys
|
| +#endif
|
| + ;
|
| + sqlite3HashInit(&db->aCollSeq);
|
| +#ifndef SQLITE_OMIT_VIRTUALTABLE
|
| + sqlite3HashInit(&db->aModule);
|
| +#endif
|
| +
|
| + db->pVfs = sqlite3_vfs_find(zVfs);
|
| + if( !db->pVfs ){
|
| + rc = SQLITE_ERROR;
|
| + sqlite3Error(db, rc, "no such vfs: %s", zVfs);
|
| + goto opendb_out;
|
| + }
|
| +
|
| + /* Add the default collation sequence BINARY. BINARY works for both UTF-8
|
| + ** and UTF-16, so add a version for each to avoid any unnecessary
|
| + ** conversions. The only error that can occur here is a malloc() failure.
|
| + */
|
| + createCollation(db, "BINARY", SQLITE_UTF8, SQLITE_COLL_BINARY, 0,
|
| + binCollFunc, 0);
|
| + createCollation(db, "BINARY", SQLITE_UTF16BE, SQLITE_COLL_BINARY, 0,
|
| + binCollFunc, 0);
|
| + createCollation(db, "BINARY", SQLITE_UTF16LE, SQLITE_COLL_BINARY, 0,
|
| + binCollFunc, 0);
|
| + createCollation(db, "RTRIM", SQLITE_UTF8, SQLITE_COLL_USER, (void*)1,
|
| + binCollFunc, 0);
|
| + if( db->mallocFailed ){
|
| + goto opendb_out;
|
| + }
|
| + db->pDfltColl = sqlite3FindCollSeq(db, SQLITE_UTF8, "BINARY", 0);
|
| + assert( db->pDfltColl!=0 );
|
| +
|
| + /* Also add a UTF-8 case-insensitive collation sequence. */
|
| + createCollation(db, "NOCASE", SQLITE_UTF8, SQLITE_COLL_NOCASE, 0,
|
| + nocaseCollatingFunc, 0);
|
| +
|
| + /* Open the backend database driver */
|
| + db->openFlags = flags;
|
| + rc = sqlite3BtreeOpen(zFilename, db, &db->aDb[0].pBt, 0,
|
| + flags | SQLITE_OPEN_MAIN_DB);
|
| + if( rc!=SQLITE_OK ){
|
| + if( rc==SQLITE_IOERR_NOMEM ){
|
| + rc = SQLITE_NOMEM;
|
| + }
|
| + sqlite3Error(db, rc, 0);
|
| + goto opendb_out;
|
| + }
|
| + db->aDb[0].pSchema = sqlite3SchemaGet(db, db->aDb[0].pBt);
|
| + db->aDb[1].pSchema = sqlite3SchemaGet(db, 0);
|
| +
|
| +
|
| + /* The default safety_level for the main database is 'full'; for the temp
|
| + ** database it is 'NONE'. This matches the pager layer defaults.
|
| + */
|
| + db->aDb[0].zName = "main";
|
| + db->aDb[0].safety_level = 3;
|
| + db->aDb[1].zName = "temp";
|
| + db->aDb[1].safety_level = 1;
|
| +
|
| + db->magic = SQLITE_MAGIC_OPEN;
|
| + if( db->mallocFailed ){
|
| + goto opendb_out;
|
| + }
|
| +
|
| + /* Register all built-in functions, but do not attempt to read the
|
| + ** database schema yet. This is delayed until the first time the database
|
| + ** is accessed.
|
| + */
|
| + sqlite3Error(db, SQLITE_OK, 0);
|
| + sqlite3RegisterBuiltinFunctions(db);
|
| +
|
| + /* Load automatic extensions - extensions that have been registered
|
| + ** using the sqlite3_automatic_extension() API.
|
| + */
|
| + sqlite3AutoLoadExtensions(db);
|
| + rc = sqlite3_errcode(db);
|
| + if( rc!=SQLITE_OK ){
|
| + goto opendb_out;
|
| + }
|
| +
|
| +#ifdef SQLITE_ENABLE_FTS1
|
| + if( !db->mallocFailed ){
|
| + extern int sqlite3Fts1Init(sqlite3*);
|
| + rc = sqlite3Fts1Init(db);
|
| + }
|
| +#endif
|
| +
|
| +#ifdef SQLITE_ENABLE_FTS2
|
| + if( !db->mallocFailed && rc==SQLITE_OK ){
|
| + extern int sqlite3Fts2Init(sqlite3*);
|
| + rc = sqlite3Fts2Init(db);
|
| + }
|
| +#endif
|
| +
|
| +#ifdef SQLITE_ENABLE_FTS3
|
| + if( !db->mallocFailed && rc==SQLITE_OK ){
|
| + rc = sqlite3Fts3Init(db);
|
| + }
|
| +#endif
|
| +
|
| +#ifdef SQLITE_ENABLE_ICU
|
| + if( !db->mallocFailed && rc==SQLITE_OK ){
|
| + rc = sqlite3IcuInit(db);
|
| + }
|
| +#endif
|
| +
|
| +#ifdef SQLITE_ENABLE_RTREE
|
| + if( !db->mallocFailed && rc==SQLITE_OK){
|
| + rc = sqlite3RtreeInit(db);
|
| + }
|
| +#endif
|
| +
|
| + sqlite3Error(db, rc, 0);
|
| +
|
| + /* -DSQLITE_DEFAULT_LOCKING_MODE=1 makes EXCLUSIVE the default locking
|
| + ** mode. -DSQLITE_DEFAULT_LOCKING_MODE=0 make NORMAL the default locking
|
| + ** mode. Doing nothing at all also makes NORMAL the default.
|
| + */
|
| +#ifdef SQLITE_DEFAULT_LOCKING_MODE
|
| + db->dfltLockMode = SQLITE_DEFAULT_LOCKING_MODE;
|
| + sqlite3PagerLockingMode(sqlite3BtreePager(db->aDb[0].pBt),
|
| + SQLITE_DEFAULT_LOCKING_MODE);
|
| +#endif
|
| +
|
| + /* Enable the lookaside-malloc subsystem */
|
| + setupLookaside(db, 0, sqlite3GlobalConfig.szLookaside,
|
| + sqlite3GlobalConfig.nLookaside);
|
| +
|
| + sqlite3_wal_autocheckpoint(db, SQLITE_DEFAULT_WAL_AUTOCHECKPOINT);
|
| +
|
| +opendb_out:
|
| + if( db ){
|
| + assert( db->mutex!=0 || isThreadsafe==0 || sqlite3GlobalConfig.bFullMutex==0 );
|
| + sqlite3_mutex_leave(db->mutex);
|
| + }
|
| + rc = sqlite3_errcode(db);
|
| + if( rc==SQLITE_NOMEM ){
|
| + sqlite3_close(db);
|
| + db = 0;
|
| + }else if( rc!=SQLITE_OK ){
|
| + db->magic = SQLITE_MAGIC_SICK;
|
| + }
|
| + *ppDb = db;
|
| + return sqlite3ApiExit(0, rc);
|
| +}
|
| +
|
| +/*
|
| +** Open a new database handle.
|
| +*/
|
| +int sqlite3_open(
|
| + const char *zFilename,
|
| + sqlite3 **ppDb
|
| +){
|
| + return openDatabase(zFilename, ppDb,
|
| + SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, 0);
|
| +}
|
| +int sqlite3_open_v2(
|
| + const char *filename, /* Database filename (UTF-8) */
|
| + sqlite3 **ppDb, /* OUT: SQLite db handle */
|
| + int flags, /* Flags */
|
| + const char *zVfs /* Name of VFS module to use */
|
| +){
|
| + return openDatabase(filename, ppDb, flags, zVfs);
|
| +}
|
| +
|
| +#ifndef SQLITE_OMIT_UTF16
|
| +/*
|
| +** Open a new database handle.
|
| +*/
|
| +int sqlite3_open16(
|
| + const void *zFilename,
|
| + sqlite3 **ppDb
|
| +){
|
| + char const *zFilename8; /* zFilename encoded in UTF-8 instead of UTF-16 */
|
| + sqlite3_value *pVal;
|
| + int rc;
|
| +
|
| + assert( zFilename );
|
| + assert( ppDb );
|
| + *ppDb = 0;
|
| +#ifndef SQLITE_OMIT_AUTOINIT
|
| + rc = sqlite3_initialize();
|
| + if( rc ) return rc;
|
| +#endif
|
| + pVal = sqlite3ValueNew(0);
|
| + sqlite3ValueSetStr(pVal, -1, zFilename, SQLITE_UTF16NATIVE, SQLITE_STATIC);
|
| + zFilename8 = sqlite3ValueText(pVal, SQLITE_UTF8);
|
| + if( zFilename8 ){
|
| + rc = openDatabase(zFilename8, ppDb,
|
| + SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, 0);
|
| + assert( *ppDb || rc==SQLITE_NOMEM );
|
| + if( rc==SQLITE_OK && !DbHasProperty(*ppDb, 0, DB_SchemaLoaded) ){
|
| + ENC(*ppDb) = SQLITE_UTF16NATIVE;
|
| + }
|
| + }else{
|
| + rc = SQLITE_NOMEM;
|
| + }
|
| + sqlite3ValueFree(pVal);
|
| +
|
| + return sqlite3ApiExit(0, rc);
|
| +}
|
| +#endif /* SQLITE_OMIT_UTF16 */
|
| +
|
| +/*
|
| +** Register a new collation sequence with the database handle db.
|
| +*/
|
| +int sqlite3_create_collation(
|
| + sqlite3* db,
|
| + const char *zName,
|
| + int enc,
|
| + void* pCtx,
|
| + int(*xCompare)(void*,int,const void*,int,const void*)
|
| +){
|
| + int rc;
|
| + sqlite3_mutex_enter(db->mutex);
|
| + assert( !db->mallocFailed );
|
| + rc = createCollation(db, zName, (u8)enc, SQLITE_COLL_USER, pCtx, xCompare, 0);
|
| + rc = sqlite3ApiExit(db, rc);
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Register a new collation sequence with the database handle db.
|
| +*/
|
| +int sqlite3_create_collation_v2(
|
| + sqlite3* db,
|
| + const char *zName,
|
| + int enc,
|
| + void* pCtx,
|
| + int(*xCompare)(void*,int,const void*,int,const void*),
|
| + void(*xDel)(void*)
|
| +){
|
| + int rc;
|
| + sqlite3_mutex_enter(db->mutex);
|
| + assert( !db->mallocFailed );
|
| + rc = createCollation(db, zName, (u8)enc, SQLITE_COLL_USER, pCtx, xCompare, xDel);
|
| + rc = sqlite3ApiExit(db, rc);
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return rc;
|
| +}
|
| +
|
| +#ifndef SQLITE_OMIT_UTF16
|
| +/*
|
| +** Register a new collation sequence with the database handle db.
|
| +*/
|
| +int sqlite3_create_collation16(
|
| + sqlite3* db,
|
| + const void *zName,
|
| + int enc,
|
| + void* pCtx,
|
| + int(*xCompare)(void*,int,const void*,int,const void*)
|
| +){
|
| + int rc = SQLITE_OK;
|
| + char *zName8;
|
| + sqlite3_mutex_enter(db->mutex);
|
| + assert( !db->mallocFailed );
|
| + zName8 = sqlite3Utf16to8(db, zName, -1, SQLITE_UTF16NATIVE);
|
| + if( zName8 ){
|
| + rc = createCollation(db, zName8, (u8)enc, SQLITE_COLL_USER, pCtx, xCompare, 0);
|
| + sqlite3DbFree(db, zName8);
|
| + }
|
| + rc = sqlite3ApiExit(db, rc);
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return rc;
|
| +}
|
| +#endif /* SQLITE_OMIT_UTF16 */
|
| +
|
| +/*
|
| +** Register a collation sequence factory callback with the database handle
|
| +** db. Replace any previously installed collation sequence factory.
|
| +*/
|
| +int sqlite3_collation_needed(
|
| + sqlite3 *db,
|
| + void *pCollNeededArg,
|
| + void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*)
|
| +){
|
| + sqlite3_mutex_enter(db->mutex);
|
| + db->xCollNeeded = xCollNeeded;
|
| + db->xCollNeeded16 = 0;
|
| + db->pCollNeededArg = pCollNeededArg;
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return SQLITE_OK;
|
| +}
|
| +
|
| +#ifndef SQLITE_OMIT_UTF16
|
| +/*
|
| +** Register a collation sequence factory callback with the database handle
|
| +** db. Replace any previously installed collation sequence factory.
|
| +*/
|
| +int sqlite3_collation_needed16(
|
| + sqlite3 *db,
|
| + void *pCollNeededArg,
|
| + void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*)
|
| +){
|
| + sqlite3_mutex_enter(db->mutex);
|
| + db->xCollNeeded = 0;
|
| + db->xCollNeeded16 = xCollNeeded16;
|
| + db->pCollNeededArg = pCollNeededArg;
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return SQLITE_OK;
|
| +}
|
| +#endif /* SQLITE_OMIT_UTF16 */
|
| +
|
| +#ifndef SQLITE_OMIT_DEPRECATED
|
| +/*
|
| +** This function is now an anachronism. It used to be used to recover from a
|
| +** malloc() failure, but SQLite now does this automatically.
|
| +*/
|
| +int sqlite3_global_recover(void){
|
| + return SQLITE_OK;
|
| +}
|
| +#endif
|
| +
|
| +/*
|
| +** Test to see whether or not the database connection is in autocommit
|
| +** mode. Return TRUE if it is and FALSE if not. Autocommit mode is on
|
| +** by default. Autocommit is disabled by a BEGIN statement and reenabled
|
| +** by the next COMMIT or ROLLBACK.
|
| +**
|
| +******* THIS IS AN EXPERIMENTAL API AND IS SUBJECT TO CHANGE ******
|
| +*/
|
| +int sqlite3_get_autocommit(sqlite3 *db){
|
| + return db->autoCommit;
|
| +}
|
| +
|
| +/*
|
| +** The following routines are subtitutes for constants SQLITE_CORRUPT,
|
| +** SQLITE_MISUSE, SQLITE_CANTOPEN, SQLITE_IOERR and possibly other error
|
| +** constants. They server two purposes:
|
| +**
|
| +** 1. Serve as a convenient place to set a breakpoint in a debugger
|
| +** to detect when version error conditions occurs.
|
| +**
|
| +** 2. Invoke sqlite3_log() to provide the source code location where
|
| +** a low-level error is first detected.
|
| +*/
|
| +int sqlite3CorruptError(int lineno){
|
| + testcase( sqlite3GlobalConfig.xLog!=0 );
|
| + sqlite3_log(SQLITE_CORRUPT,
|
| + "database corruption at line %d of [%.10s]",
|
| + lineno, 20+sqlite3_sourceid());
|
| + return SQLITE_CORRUPT;
|
| +}
|
| +int sqlite3MisuseError(int lineno){
|
| + testcase( sqlite3GlobalConfig.xLog!=0 );
|
| + sqlite3_log(SQLITE_MISUSE,
|
| + "misuse at line %d of [%.10s]",
|
| + lineno, 20+sqlite3_sourceid());
|
| + return SQLITE_MISUSE;
|
| +}
|
| +int sqlite3CantopenError(int lineno){
|
| + testcase( sqlite3GlobalConfig.xLog!=0 );
|
| + sqlite3_log(SQLITE_CANTOPEN,
|
| + "cannot open file at line %d of [%.10s]",
|
| + lineno, 20+sqlite3_sourceid());
|
| + return SQLITE_CANTOPEN;
|
| +}
|
| +
|
| +
|
| +#ifndef SQLITE_OMIT_DEPRECATED
|
| +/*
|
| +** This is a convenience routine that makes sure that all thread-specific
|
| +** data for this thread has been deallocated.
|
| +**
|
| +** SQLite no longer uses thread-specific data so this routine is now a
|
| +** no-op. It is retained for historical compatibility.
|
| +*/
|
| +void sqlite3_thread_cleanup(void){
|
| +}
|
| +#endif
|
| +
|
| +/*
|
| +** Return meta information about a specific column of a database table.
|
| +** See comment in sqlite3.h (sqlite.h.in) for details.
|
| +*/
|
| +#ifdef SQLITE_ENABLE_COLUMN_METADATA
|
| +int sqlite3_table_column_metadata(
|
| + sqlite3 *db, /* Connection handle */
|
| + const char *zDbName, /* Database name or NULL */
|
| + const char *zTableName, /* Table name */
|
| + const char *zColumnName, /* Column name */
|
| + char const **pzDataType, /* OUTPUT: Declared data type */
|
| + char const **pzCollSeq, /* OUTPUT: Collation sequence name */
|
| + int *pNotNull, /* OUTPUT: True if NOT NULL constraint exists */
|
| + int *pPrimaryKey, /* OUTPUT: True if column part of PK */
|
| + int *pAutoinc /* OUTPUT: True if column is auto-increment */
|
| +){
|
| + int rc;
|
| + char *zErrMsg = 0;
|
| + Table *pTab = 0;
|
| + Column *pCol = 0;
|
| + int iCol;
|
| +
|
| + char const *zDataType = 0;
|
| + char const *zCollSeq = 0;
|
| + int notnull = 0;
|
| + int primarykey = 0;
|
| + int autoinc = 0;
|
| +
|
| + /* Ensure the database schema has been loaded */
|
| + sqlite3_mutex_enter(db->mutex);
|
| + sqlite3BtreeEnterAll(db);
|
| + rc = sqlite3Init(db, &zErrMsg);
|
| + if( SQLITE_OK!=rc ){
|
| + goto error_out;
|
| + }
|
| +
|
| + /* Locate the table in question */
|
| + pTab = sqlite3FindTable(db, zTableName, zDbName);
|
| + if( !pTab || pTab->pSelect ){
|
| + pTab = 0;
|
| + goto error_out;
|
| + }
|
| +
|
| + /* Find the column for which info is requested */
|
| + if( sqlite3IsRowid(zColumnName) ){
|
| + iCol = pTab->iPKey;
|
| + if( iCol>=0 ){
|
| + pCol = &pTab->aCol[iCol];
|
| + }
|
| + }else{
|
| + for(iCol=0; iCol<pTab->nCol; iCol++){
|
| + pCol = &pTab->aCol[iCol];
|
| + if( 0==sqlite3StrICmp(pCol->zName, zColumnName) ){
|
| + break;
|
| + }
|
| + }
|
| + if( iCol==pTab->nCol ){
|
| + pTab = 0;
|
| + goto error_out;
|
| + }
|
| + }
|
| +
|
| + /* The following block stores the meta information that will be returned
|
| + ** to the caller in local variables zDataType, zCollSeq, notnull, primarykey
|
| + ** and autoinc. At this point there are two possibilities:
|
| + **
|
| + ** 1. The specified column name was rowid", "oid" or "_rowid_"
|
| + ** and there is no explicitly declared IPK column.
|
| + **
|
| + ** 2. The table is not a view and the column name identified an
|
| + ** explicitly declared column. Copy meta information from *pCol.
|
| + */
|
| + if( pCol ){
|
| + zDataType = pCol->zType;
|
| + zCollSeq = pCol->zColl;
|
| + notnull = pCol->notNull!=0;
|
| + primarykey = pCol->isPrimKey!=0;
|
| + autoinc = pTab->iPKey==iCol && (pTab->tabFlags & TF_Autoincrement)!=0;
|
| + }else{
|
| + zDataType = "INTEGER";
|
| + primarykey = 1;
|
| + }
|
| + if( !zCollSeq ){
|
| + zCollSeq = "BINARY";
|
| + }
|
| +
|
| +error_out:
|
| + sqlite3BtreeLeaveAll(db);
|
| +
|
| + /* Whether the function call succeeded or failed, set the output parameters
|
| + ** to whatever their local counterparts contain. If an error did occur,
|
| + ** this has the effect of zeroing all output parameters.
|
| + */
|
| + if( pzDataType ) *pzDataType = zDataType;
|
| + if( pzCollSeq ) *pzCollSeq = zCollSeq;
|
| + if( pNotNull ) *pNotNull = notnull;
|
| + if( pPrimaryKey ) *pPrimaryKey = primarykey;
|
| + if( pAutoinc ) *pAutoinc = autoinc;
|
| +
|
| + if( SQLITE_OK==rc && !pTab ){
|
| + sqlite3DbFree(db, zErrMsg);
|
| + zErrMsg = sqlite3MPrintf(db, "no such table column: %s.%s", zTableName,
|
| + zColumnName);
|
| + rc = SQLITE_ERROR;
|
| + }
|
| + sqlite3Error(db, rc, (zErrMsg?"%s":0), zErrMsg);
|
| + sqlite3DbFree(db, zErrMsg);
|
| + rc = sqlite3ApiExit(db, rc);
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return rc;
|
| +}
|
| +#endif
|
| +
|
| +/*
|
| +** Sleep for a little while. Return the amount of time slept.
|
| +*/
|
| +int sqlite3_sleep(int ms){
|
| + sqlite3_vfs *pVfs;
|
| + int rc;
|
| + pVfs = sqlite3_vfs_find(0);
|
| + if( pVfs==0 ) return 0;
|
| +
|
| + /* This function works in milliseconds, but the underlying OsSleep()
|
| + ** API uses microseconds. Hence the 1000's.
|
| + */
|
| + rc = (sqlite3OsSleep(pVfs, 1000*ms)/1000);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Enable or disable the extended result codes.
|
| +*/
|
| +int sqlite3_extended_result_codes(sqlite3 *db, int onoff){
|
| + sqlite3_mutex_enter(db->mutex);
|
| + db->errMask = onoff ? 0xffffffff : 0xff;
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return SQLITE_OK;
|
| +}
|
| +
|
| +/*
|
| +** Invoke the xFileControl method on a particular database.
|
| +*/
|
| +int sqlite3_file_control(sqlite3 *db, const char *zDbName, int op, void *pArg){
|
| + int rc = SQLITE_ERROR;
|
| + int iDb;
|
| + sqlite3_mutex_enter(db->mutex);
|
| + if( zDbName==0 ){
|
| + iDb = 0;
|
| + }else{
|
| + for(iDb=0; iDb<db->nDb; iDb++){
|
| + if( strcmp(db->aDb[iDb].zName, zDbName)==0 ) break;
|
| + }
|
| + }
|
| + if( iDb<db->nDb ){
|
| + Btree *pBtree = db->aDb[iDb].pBt;
|
| + if( pBtree ){
|
| + Pager *pPager;
|
| + sqlite3_file *fd;
|
| + sqlite3BtreeEnter(pBtree);
|
| + pPager = sqlite3BtreePager(pBtree);
|
| + assert( pPager!=0 );
|
| + fd = sqlite3PagerFile(pPager);
|
| + assert( fd!=0 );
|
| + if( op==SQLITE_FCNTL_FILE_POINTER ){
|
| + *(sqlite3_file**)pArg = fd;
|
| + rc = SQLITE_OK;
|
| + }else if( fd->pMethods ){
|
| + rc = sqlite3OsFileControl(fd, op, pArg);
|
| + }else{
|
| + rc = SQLITE_NOTFOUND;
|
| + }
|
| + sqlite3BtreeLeave(pBtree);
|
| + }
|
| + }
|
| + sqlite3_mutex_leave(db->mutex);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Interface to the testing logic.
|
| +*/
|
| +int sqlite3_test_control(int op, ...){
|
| + int rc = 0;
|
| +#ifndef SQLITE_OMIT_BUILTIN_TEST
|
| + va_list ap;
|
| + va_start(ap, op);
|
| + switch( op ){
|
| +
|
| + /*
|
| + ** Save the current state of the PRNG.
|
| + */
|
| + case SQLITE_TESTCTRL_PRNG_SAVE: {
|
| + sqlite3PrngSaveState();
|
| + break;
|
| + }
|
| +
|
| + /*
|
| + ** Restore the state of the PRNG to the last state saved using
|
| + ** PRNG_SAVE. If PRNG_SAVE has never before been called, then
|
| + ** this verb acts like PRNG_RESET.
|
| + */
|
| + case SQLITE_TESTCTRL_PRNG_RESTORE: {
|
| + sqlite3PrngRestoreState();
|
| + break;
|
| + }
|
| +
|
| + /*
|
| + ** Reset the PRNG back to its uninitialized state. The next call
|
| + ** to sqlite3_randomness() will reseed the PRNG using a single call
|
| + ** to the xRandomness method of the default VFS.
|
| + */
|
| + case SQLITE_TESTCTRL_PRNG_RESET: {
|
| + sqlite3PrngResetState();
|
| + break;
|
| + }
|
| +
|
| + /*
|
| + ** sqlite3_test_control(BITVEC_TEST, size, program)
|
| + **
|
| + ** Run a test against a Bitvec object of size. The program argument
|
| + ** is an array of integers that defines the test. Return -1 on a
|
| + ** memory allocation error, 0 on success, or non-zero for an error.
|
| + ** See the sqlite3BitvecBuiltinTest() for additional information.
|
| + */
|
| + case SQLITE_TESTCTRL_BITVEC_TEST: {
|
| + int sz = va_arg(ap, int);
|
| + int *aProg = va_arg(ap, int*);
|
| + rc = sqlite3BitvecBuiltinTest(sz, aProg);
|
| + break;
|
| + }
|
| +
|
| + /*
|
| + ** sqlite3_test_control(BENIGN_MALLOC_HOOKS, xBegin, xEnd)
|
| + **
|
| + ** Register hooks to call to indicate which malloc() failures
|
| + ** are benign.
|
| + */
|
| + case SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS: {
|
| + typedef void (*void_function)(void);
|
| + void_function xBenignBegin;
|
| + void_function xBenignEnd;
|
| + xBenignBegin = va_arg(ap, void_function);
|
| + xBenignEnd = va_arg(ap, void_function);
|
| + sqlite3BenignMallocHooks(xBenignBegin, xBenignEnd);
|
| + break;
|
| + }
|
| +
|
| + /*
|
| + ** sqlite3_test_control(SQLITE_TESTCTRL_PENDING_BYTE, unsigned int X)
|
| + **
|
| + ** Set the PENDING byte to the value in the argument, if X>0.
|
| + ** Make no changes if X==0. Return the value of the pending byte
|
| + ** as it existing before this routine was called.
|
| + **
|
| + ** IMPORTANT: Changing the PENDING byte from 0x40000000 results in
|
| + ** an incompatible database file format. Changing the PENDING byte
|
| + ** while any database connection is open results in undefined and
|
| + ** dileterious behavior.
|
| + */
|
| + case SQLITE_TESTCTRL_PENDING_BYTE: {
|
| + rc = PENDING_BYTE;
|
| +#ifndef SQLITE_OMIT_WSD
|
| + {
|
| + unsigned int newVal = va_arg(ap, unsigned int);
|
| + if( newVal ) sqlite3PendingByte = newVal;
|
| + }
|
| +#endif
|
| + break;
|
| + }
|
| +
|
| + /*
|
| + ** sqlite3_test_control(SQLITE_TESTCTRL_ASSERT, int X)
|
| + **
|
| + ** This action provides a run-time test to see whether or not
|
| + ** assert() was enabled at compile-time. If X is true and assert()
|
| + ** is enabled, then the return value is true. If X is true and
|
| + ** assert() is disabled, then the return value is zero. If X is
|
| + ** false and assert() is enabled, then the assertion fires and the
|
| + ** process aborts. If X is false and assert() is disabled, then the
|
| + ** return value is zero.
|
| + */
|
| + case SQLITE_TESTCTRL_ASSERT: {
|
| + volatile int x = 0;
|
| + assert( (x = va_arg(ap,int))!=0 );
|
| + rc = x;
|
| + break;
|
| + }
|
| +
|
| +
|
| + /*
|
| + ** sqlite3_test_control(SQLITE_TESTCTRL_ALWAYS, int X)
|
| + **
|
| + ** This action provides a run-time test to see how the ALWAYS and
|
| + ** NEVER macros were defined at compile-time.
|
| + **
|
| + ** The return value is ALWAYS(X).
|
| + **
|
| + ** The recommended test is X==2. If the return value is 2, that means
|
| + ** ALWAYS() and NEVER() are both no-op pass-through macros, which is the
|
| + ** default setting. If the return value is 1, then ALWAYS() is either
|
| + ** hard-coded to true or else it asserts if its argument is false.
|
| + ** The first behavior (hard-coded to true) is the case if
|
| + ** SQLITE_TESTCTRL_ASSERT shows that assert() is disabled and the second
|
| + ** behavior (assert if the argument to ALWAYS() is false) is the case if
|
| + ** SQLITE_TESTCTRL_ASSERT shows that assert() is enabled.
|
| + **
|
| + ** The run-time test procedure might look something like this:
|
| + **
|
| + ** if( sqlite3_test_control(SQLITE_TESTCTRL_ALWAYS, 2)==2 ){
|
| + ** // ALWAYS() and NEVER() are no-op pass-through macros
|
| + ** }else if( sqlite3_test_control(SQLITE_TESTCTRL_ASSERT, 1) ){
|
| + ** // ALWAYS(x) asserts that x is true. NEVER(x) asserts x is false.
|
| + ** }else{
|
| + ** // ALWAYS(x) is a constant 1. NEVER(x) is a constant 0.
|
| + ** }
|
| + */
|
| + case SQLITE_TESTCTRL_ALWAYS: {
|
| + int x = va_arg(ap,int);
|
| + rc = ALWAYS(x);
|
| + break;
|
| + }
|
| +
|
| + /* sqlite3_test_control(SQLITE_TESTCTRL_RESERVE, sqlite3 *db, int N)
|
| + **
|
| + ** Set the nReserve size to N for the main database on the database
|
| + ** connection db.
|
| + */
|
| + case SQLITE_TESTCTRL_RESERVE: {
|
| + sqlite3 *db = va_arg(ap, sqlite3*);
|
| + int x = va_arg(ap,int);
|
| + sqlite3_mutex_enter(db->mutex);
|
| + sqlite3BtreeSetPageSize(db->aDb[0].pBt, 0, x, 0);
|
| + sqlite3_mutex_leave(db->mutex);
|
| + break;
|
| + }
|
| +
|
| + /* sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS, sqlite3 *db, int N)
|
| + **
|
| + ** Enable or disable various optimizations for testing purposes. The
|
| + ** argument N is a bitmask of optimizations to be disabled. For normal
|
| + ** operation N should be 0. The idea is that a test program (like the
|
| + ** SQL Logic Test or SLT test module) can run the same SQL multiple times
|
| + ** with various optimizations disabled to verify that the same answer
|
| + ** is obtained in every case.
|
| + */
|
| + case SQLITE_TESTCTRL_OPTIMIZATIONS: {
|
| + sqlite3 *db = va_arg(ap, sqlite3*);
|
| + int x = va_arg(ap,int);
|
| + db->flags = (x & SQLITE_OptMask) | (db->flags & ~SQLITE_OptMask);
|
| + break;
|
| + }
|
| +
|
| +#ifdef SQLITE_N_KEYWORD
|
| + /* sqlite3_test_control(SQLITE_TESTCTRL_ISKEYWORD, const char *zWord)
|
| + **
|
| + ** If zWord is a keyword recognized by the parser, then return the
|
| + ** number of keywords. Or if zWord is not a keyword, return 0.
|
| + **
|
| + ** This test feature is only available in the amalgamation since
|
| + ** the SQLITE_N_KEYWORD macro is not defined in this file if SQLite
|
| + ** is built using separate source files.
|
| + */
|
| + case SQLITE_TESTCTRL_ISKEYWORD: {
|
| + const char *zWord = va_arg(ap, const char*);
|
| + int n = sqlite3Strlen30(zWord);
|
| + rc = (sqlite3KeywordCode((u8*)zWord, n)!=TK_ID) ? SQLITE_N_KEYWORD : 0;
|
| + break;
|
| + }
|
| +#endif
|
| +
|
| + /* sqlite3_test_control(SQLITE_TESTCTRL_PGHDRSZ)
|
| + **
|
| + ** Return the size of a pcache header in bytes.
|
| + */
|
| + case SQLITE_TESTCTRL_PGHDRSZ: {
|
| + rc = sizeof(PgHdr);
|
| + break;
|
| + }
|
| +
|
| + /* sqlite3_test_control(SQLITE_TESTCTRL_SCRATCHMALLOC, sz, &pNew, pFree);
|
| + **
|
| + ** Pass pFree into sqlite3ScratchFree().
|
| + ** If sz>0 then allocate a scratch buffer into pNew.
|
| + */
|
| + case SQLITE_TESTCTRL_SCRATCHMALLOC: {
|
| + void *pFree, **ppNew;
|
| + int sz;
|
| + sz = va_arg(ap, int);
|
| + ppNew = va_arg(ap, void**);
|
| + pFree = va_arg(ap, void*);
|
| + if( sz ) *ppNew = sqlite3ScratchMalloc(sz);
|
| + sqlite3ScratchFree(pFree);
|
| + break;
|
| + }
|
| +
|
| + }
|
| + va_end(ap);
|
| +#endif /* SQLITE_OMIT_BUILTIN_TEST */
|
| + return rc;
|
| +}
|
|
|
Chromium Code Reviews
Issue 694353003:
Get `gn gen` to succeed on Windows (Closed)
Base URL: https://github.com/domokit/mojo.git@master