int sqlite3_create_function16(
sqlite3 *db,
const void *zFunctionName,
int nArg,
int eTextRep,
void *pUserData,
void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
void (*xStep)(sqlite3_context*,int,sqlite3_value**),
void (*xFinal)(sqlite3_context*)
){
int rc;
char const *zFunc8;
sqlite3_value *pTmp;
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
pTmp = sqlite3GetTransientValue(db);
sqlite3ValueSetStr(pTmp, -1, zFunctionName, SQLITE_UTF16NATIVE,SQLITE_STATIC);
zFunc8 = sqlite3ValueText(pTmp, SQLITE_UTF8);
if( !zFunc8 ){
return SQLITE_NOMEM;
}
rc = sqlite3_create_function(db, zFunc8, nArg, eTextRep,
pUserData, xFunc, xStep, xFinal);
return rc;
}
/*
** Return UTF-16 encoded English language explanation of the most recent
** error.
*/
const void *sqlite3_errmsg16(sqlite3 *db){
/* Because all the characters in the string are in the unicode
** range 0x00-0xFF, if we pad the big-endian string with a
** zero byte, we can obtain the little-endian string with
** &big_endian[1].
*/
static const char outOfMemBe[] = {
0, 'o', 0, 'u', 0, 't', 0, ' ',
0, 'o', 0, 'f', 0, ' ',
0, 'm', 0, 'e', 0, 'm', 0, 'o', 0, 'r', 0, 'y', 0, 0, 0
};
static const char misuseBe [] = {
0, 'l', 0, 'i', 0, 'b', 0, 'r', 0, 'a', 0, 'r', 0, 'y', 0, ' ',
0, 'r', 0, 'o', 0, 'u', 0, 't', 0, 'i', 0, 'n', 0, 'e', 0, ' ',
0, 'c', 0, 'a', 0, 'l', 0, 'l', 0, 'e', 0, 'd', 0, ' ',
0, 'o', 0, 'u', 0, 't', 0, ' ',
0, 'o', 0, 'f', 0, ' ',
0, 's', 0, 'e', 0, 'q', 0, 'u', 0, 'e', 0, 'n', 0, 'c', 0, 'e', 0, 0, 0
};
const void *z;
if( sqlite3_malloc_failed ){
return (void *)(&outOfMemBe[SQLITE_UTF16NATIVE==SQLITE_UTF16LE?1:0]);
}
if( sqlite3SafetyCheck(db) || db->errCode==SQLITE_MISUSE ){
return (void *)(&misuseBe[SQLITE_UTF16NATIVE==SQLITE_UTF16LE?1:0]);
}
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);
}
return z;
}
/*
** Compile the UTF-16 encoded SQL statement zSql into a statement handle.
*/
int sqlite3_prepare16(
sqlite3 *db, /* Database handle. */
const void *zSql, /* UTF-8 encoded SQL statement. */
int nBytes, /* Length of zSql in bytes. */
sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */
const void **pzTail /* OUT: End of parsed string */
){
/* This function currently works by first transforming the UTF-16
** encoded string to UTF-8, then invoking sqlite3_prepare(). The
** tricky bit is figuring out the pointer to return in *pzTail.
*/
char *zSql8;
const char *zTail8 = 0;
int rc = SQLITE_OK;
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
zSql8 = sqlite3utf16to8(zSql, nBytes);
if( zSql8 ){
rc = sqlite3_prepare(db, zSql8, -1, ppStmt, &zTail8);
}
if( zTail8 && pzTail ){
/* If sqlite3_prepare returns a tail pointer, we calculate the
** equivalent pointer into the UTF-16 string by counting the unicode
** characters between zSql8 and zTail8, and then returning a pointer
** the same number of characters into the UTF-16 string.
*/
int chars_parsed = sqlite3utf8CharLen(zSql8, zTail8-zSql8);
*pzTail = (u8 *)zSql + sqlite3utf16ByteLen(zSql, chars_parsed);
}
sqliteFree(zSql8);
return sqlite3ApiExit(db, rc);
}
/*
** 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 || sqlite3MallocFailed() ){
return SQLITE_NOMEM;
}
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
return db->errCode;
}
/*
** Return the most recent error code generated by an SQLite routine.
*/
int sqlite3_errcode(sqlite3 *db){
if( sqlite3_malloc_failed ){
return SQLITE_NOMEM;
}
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
return db->errCode;
}
/*
** 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().
*/
EXPORT_C int sqlite3_errcode(sqlite3 *db){
if( !db || db->mallocFailed ){
return SQLITE_NOMEM;
}
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
return db->errCode & db->errMask;
}
/*
** 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*)
){
CollSeq *pColl;
int rc = SQLITE_OK;
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
/* 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( enc==SQLITE_UTF16 ){
enc = SQLITE_UTF16NATIVE;
}
if( enc!=SQLITE_UTF8 && enc!=SQLITE_UTF16LE && enc!=SQLITE_UTF16BE ){
sqlite3Error(db, SQLITE_ERROR,
"Param 3 to sqlite3_create_collation() must be one of "
"SQLITE_UTF8, SQLITE_UTF16, SQLITE_UTF16LE or SQLITE_UTF16BE"
);
return SQLITE_ERROR;
}
/* 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)enc, zName, strlen(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);
}
pColl = sqlite3FindCollSeq(db, (u8)enc, zName, strlen(zName), 1);
if( 0==pColl ){
rc = SQLITE_NOMEM;
}else{
pColl->xCmp = xCompare;
pColl->pUser = pCtx;
pColl->enc = enc;
}
sqlite3Error(db, rc, 0);
return rc;
}
/*
** This routine installs a default busy handler that waits for the
** specified number of milliseconds before returning 0.
*/
EXPORT_C int sqlite3_busy_timeout(sqlite3 *db, int ms){
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
if( ms>0 ){
db->busyTimeout = ms;
sqlite3_busy_handler(db, sqliteDefaultBusyCallback, (void*)db);
}else{
sqlite3_busy_handler(db, NULL, NULL);
}
return SQLITE_OK;
}
/*
** 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
){
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
db->busyHandler.xFunc = xBusy;
db->busyHandler.pArg = pArg;
return SQLITE_OK;
}
/*
** 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*)
){
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
db->xCollNeeded = 0;
db->xCollNeeded16 = xCollNeeded16;
db->pCollNeededArg = pCollNeededArg;
return SQLITE_OK;
}
/*
** 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,
int enc,
void* pCtx,
int(*xCompare)(void*,int,const void*,int,const void*)
){
CollSeq *pColl;
int enc2;
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
/* 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 & ~SQLITE_UTF16_ALIGNED;
if( enc2==SQLITE_UTF16 ){
enc2 = SQLITE_UTF16NATIVE;
}
if( (enc2&~3)!=0 ){
sqlite3Error(db, SQLITE_ERROR, "unknown encoding");
return SQLITE_ERROR;
}
/* 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, strlen(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);
}
pColl = sqlite3FindCollSeq(db, (u8)enc2, zName, strlen(zName), 1);
if( pColl ){
pColl->xCmp = xCompare;
pColl->pUser = pCtx;
pColl->enc = enc2 | (enc & SQLITE_UTF16_ALIGNED);
}
sqlite3Error(db, SQLITE_OK, 0);
return SQLITE_OK;
}
/*
** Return UTF-8 encoded English language explanation of the most recent
** error.
*/
const char *sqlite3_errmsg(sqlite3 *db){
const char *z;
if( sqlite3_malloc_failed ){
return sqlite3ErrStr(SQLITE_NOMEM);
}
if( sqlite3SafetyCheck(db) || db->errCode==SQLITE_MISUSE ){
return sqlite3ErrStr(SQLITE_MISUSE);
}
z = sqlite3_value_text(db->pErr);
if( z==0 ){
z = sqlite3ErrStr(db->errCode);
}
return z;
}
/*
** Unlock a virtual table. When the last lock is removed,
** disconnect the virtual table.
*/
void sqlite3VtabUnlock(sqlite3 *db, sqlite3_vtab *pVtab){
pVtab->nRef--;
assert(db);
assert(!sqlite3SafetyCheck(db));
if( pVtab->nRef==0 ){
if( db->magic==SQLITE_MAGIC_BUSY ){
sqlite3SafetyOff(db);
pVtab->pModule->xDisconnect(pVtab);
sqlite3SafetyOn(db);
} else {
pVtab->pModule->xDisconnect(pVtab);
}
}
}
/*
** Return UTF-8 encoded English language explanation of the most recent
** error.
*/
const char *sqlite3_errmsg(sqlite3 *db){
const char *z;
assert( !sqlite3MallocFailed() );
if( !db ){
return sqlite3ErrStr(SQLITE_NOMEM);
}
if( sqlite3SafetyCheck(db) || db->errCode==SQLITE_MISUSE ){
return sqlite3ErrStr(SQLITE_MISUSE);
}
z = (char*)sqlite3_value_text(db->pErr);
if( z==0 ){
z = sqlite3ErrStr(db->errCode);
}
return z;
}
/*
** Register a collation sequence factory callback with the database handle
** db. Replace any previously installed collation sequence factory.
*/
extern "C" int sqlite3_collation_needed16(
sqlite3 *db,
void *pCollNeededArg,
void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*)
){
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
sqlite3_mutex_enter(db->mutex);
db->xCollNeeded = 0;
db->xCollNeeded16 = xCollNeeded16;
db->pCollNeededArg = pCollNeededArg;
sqlite3_mutex_leave(db->mutex);
return SQLITE_OK;
}
/*
** This routine sets the busy callback for an Sqlite database to the
** given callback function with the given argument.
*/
extern "C" int sqlite3_busy_handler(
sqlite3 *db,
int (*xBusy)(void*,int),
void *pArg
){
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
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;
}
/*
** Return UTF-8 encoded English language explanation of the most recent
** error.
*/
EXPORT_C const char *sqlite3_errmsg(sqlite3 *db){
const char *z;
if( !db ){
return sqlite3ErrStr(SQLITE_NOMEM);
}
if( sqlite3SafetyCheck(db) || db->errCode==SQLITE_MISUSE ){
return sqlite3ErrStr(SQLITE_MISUSE);
}
sqlite3_mutex_enter(db->mutex);
assert( !db->mallocFailed );
z = (char*)sqlite3_value_text(db->pErr);
if( z==0 ){
z = sqlite3ErrStr(db->errCode);
}
sqlite3_mutex_leave(db->mutex);
return z;
}
/*
** Register a new collation sequence with the database handle db.
*/
int sqlite3_create_collation16(
sqlite3* db,
const char *zName,
int enc,
void* pCtx,
int(*xCompare)(void*,int,const void*,int,const void*)
){
char const *zName8;
sqlite3_value *pTmp;
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
pTmp = sqlite3GetTransientValue(db);
sqlite3ValueSetStr(pTmp, -1, zName, SQLITE_UTF16NATIVE, SQLITE_STATIC);
zName8 = sqlite3ValueText(pTmp, SQLITE_UTF8);
return sqlite3_create_collation(db, zName8, enc, pCtx, xCompare);
}
/*
** 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
){
if( !sqlite3SafetyCheck(db) ){
if( nOps>0 ){
db->xProgress = xProgress;
db->nProgressOps = nOps;
db->pProgressArg = pArg;
}else{
db->xProgress = 0;
db->nProgressOps = 0;
db->pProgressArg = 0;
}
}
}
/*
** 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.
*/
extern "C" void sqlite3_progress_handler(
sqlite3 *db,
int nOps,
int (*xProgress)(void*),
void *pArg
){
if( !sqlite3SafetyCheck(db) ){
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);
}
}
/*
** Compile the UTF-16 encoded SQL statement zSql into a statement handle.
*/
int sqlite3_prepare16(
sqlite3 *db, /* Database handle. */
const void *zSql, /* UTF-8 encoded SQL statement. */
int nBytes, /* Length of zSql in bytes. */
sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */
const void **pzTail /* OUT: End of parsed string */
){
/* This function currently works by first transforming the UTF-16
** encoded string to UTF-8, then invoking sqlite3_prepare(). The
** tricky bit is figuring out the pointer to return in *pzTail.
*/
char const *zSql8 = 0;
char const *zTail8 = 0;
int rc;
sqlite3_value *pTmp;
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
pTmp = sqlite3GetTransientValue(db);
sqlite3ValueSetStr(pTmp, -1, zSql, SQLITE_UTF16NATIVE, SQLITE_STATIC);
zSql8 = sqlite3ValueText(pTmp, SQLITE_UTF8);
if( !zSql8 ){
sqlite3Error(db, SQLITE_NOMEM, 0);
return SQLITE_NOMEM;
}
rc = sqlite3_prepare(db, zSql8, -1, ppStmt, &zTail8);
if( zTail8 && pzTail ){
/* If sqlite3_prepare returns a tail pointer, we calculate the
** equivalent pointer into the UTF-16 string by counting the unicode
** characters between zSql8 and zTail8, and then returning a pointer
** the same number of characters into the UTF-16 string.
*/
int chars_parsed = sqlite3utf8CharLen(zSql8, zTail8-zSql8);
*pzTail = (u8 *)zSql + sqlite3utf16ByteLen(zSql, chars_parsed);
}
return rc;
}
/*
** Close an existing SQLite database
*/
EXPORT_C int sqlite3_close(sqlite3 *db){
HashElem *i;
int j;
if( !db ){
return SQLITE_OK;
}
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
sqlite3_mutex_enter(db->mutex);
#ifdef SQLITE_SSE
{
extern void sqlite3SseCleanup(sqlite3*);
sqlite3SseCleanup(db);
}
#endif
sqlite3ResetInternalSchema(db, 0);
/* 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( !sqlite3SafetyCheck(db) );
/* FIX ME: db->magic may be set to SQLITE_MAGIC_CLOSED if the database
** cannot be opened for some reason. So this routine needs to run in
** that case. But maybe there should be an extra magic value for the
** "failed to open" state.
**
** TODO: Coverage tests do not test the case where this condition is
** true. It's hard to see how to cause it without messing with threads.
*/
if( db->magic!=SQLITE_MAGIC_CLOSED && sqlite3SafetyOn(db) ){
/* printf("DID NOT CLOSE\n"); fflush(stdout); */
sqlite3_mutex_leave(db->mutex);
return SQLITE_ERROR;
}
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, 0);
assert( db->nDb<=2 );
assert( db->aDb==db->aDbStatic );
for(i=sqliteHashFirst(&db->aFunc); i; i=sqliteHashNext(i)){
FuncDef *pFunc, *pNext;
for(pFunc = (FuncDef*)sqliteHashData(i); pFunc; pFunc=pNext){
pNext = pFunc->pNext;
sqlite3_free(pFunc);
}
}
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);
}
}
sqlite3_free(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);
}
sqlite3_free(pMod);
}
sqlite3HashClear(&db->aModule);
#endif
sqlite3HashClear(&db->aFunc);
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?
*/
sqlite3_free(db->aDb[1].pSchema);
sqlite3_mutex_leave(db->mutex);
sqlite3_mutex_free(db->mutex);
sqlite3_free(db);
return SQLITE_OK;
}
/*
** Create new user functions.
*/
int sqlite3_create_function(
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*)
){
FuncDef *p;
int nName;
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
if( zFunctionName==0 ||
(xFunc && (xFinal || xStep)) ||
(!xFunc && (xFinal && !xStep)) ||
(!xFunc && (!xFinal && xStep)) ||
(nArg<-1 || nArg>127) ||
(255<(nName = strlen(zFunctionName))) ){
return SQLITE_ERROR;
}
#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 = sqlite3_create_function(db, zFunctionName, nArg, SQLITE_UTF8,
pUserData, xFunc, xStep, xFinal);
if( rc!=SQLITE_OK ) return rc;
rc = sqlite3_create_function(db, zFunctionName, nArg, SQLITE_UTF16LE,
pUserData, xFunc, xStep, xFinal);
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, 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");
return SQLITE_BUSY;
}else{
sqlite3ExpirePreparedStatements(db);
}
}
p = sqlite3FindFunction(db, zFunctionName, nName, nArg, enc, 1);
if( p==0 ) return SQLITE_NOMEM;
p->xFunc = xFunc;
p->xStep = xStep;
p->xFinalize = xFinal;
p->pUserData = pUserData;
return SQLITE_OK;
}
/*
** Close an existing SQLite database
*/
int sqlite3_close(sqlite3 *db){
HashElem *i;
int j;
if( !db ){
return SQLITE_OK;
}
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
#ifdef SQLITE_SSE
sqlite3_finalize(db->pFetch);
#endif
/* If there are any outstanding VMs, return SQLITE_BUSY. */
if( db->pVdbe ){
sqlite3Error(db, SQLITE_BUSY,
"Unable to close due to unfinalised statements");
return SQLITE_BUSY;
}
assert( !sqlite3SafetyCheck(db) );
/* FIX ME: db->magic may be set to SQLITE_MAGIC_CLOSED if the database
** cannot be opened for some reason. So this routine needs to run in
** that case. But maybe there should be an extra magic value for the
** "failed to open" state.
*/
if( db->magic!=SQLITE_MAGIC_CLOSED && sqlite3SafetyOn(db) ){
/* printf("DID NOT CLOSE\n"); fflush(stdout); */
return SQLITE_ERROR;
}
for(j=0; j<db->nDb; j++){
struct Db *pDb = &db->aDb[j];
if( pDb->pBt ){
sqlite3BtreeClose(pDb->pBt);
pDb->pBt = 0;
}
}
sqlite3ResetInternalSchema(db, 0);
assert( db->nDb<=2 );
assert( db->aDb==db->aDbStatic );
for(i=sqliteHashFirst(&db->aFunc); i; i=sqliteHashNext(i)){
FuncDef *pFunc, *pNext;
for(pFunc = (FuncDef*)sqliteHashData(i); pFunc; pFunc=pNext){
pNext = pFunc->pNext;
sqliteFree(pFunc);
}
}
for(i=sqliteHashFirst(&db->aCollSeq); i; i=sqliteHashNext(i)){
CollSeq *pColl = (CollSeq *)sqliteHashData(i);
sqliteFree(pColl);
}
sqlite3HashClear(&db->aCollSeq);
sqlite3HashClear(&db->aFunc);
sqlite3Error(db, SQLITE_OK, 0); /* Deallocates any cached error strings. */
if( db->pValue ){
sqlite3ValueFree(db->pValue);
}
if( db->pErr ){
sqlite3ValueFree(db->pErr);
}
#ifndef SQLITE_OMIT_GLOBALRECOVER
{
sqlite3 *pPrev;
sqlite3OsEnterMutex();
pPrev = pDbList;
while( pPrev && pPrev->pNext!=db ){
pPrev = pPrev->pNext;
}
if( pPrev ){
pPrev->pNext = db->pNext;
}else{
assert( pDbList==db );
pDbList = db->pNext;
}
sqlite3OsLeaveMutex();
}
#endif
db->magic = SQLITE_MAGIC_ERROR;
sqliteFree(db);
return SQLITE_OK;
}
/*
** Close an existing SQLite database
*/
int sqlite3_close(sqlite3 *db){
HashElem *i;
int j;
if( !db ){
return SQLITE_OK;
}
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
#ifdef SQLITE_SSE
sqlite3_finalize(db->pFetch);
#endif
/* If there are any outstanding VMs, return SQLITE_BUSY. */
if( db->pVdbe ){
sqlite3Error(db, SQLITE_BUSY,
"Unable to close due to unfinalised statements");
return SQLITE_BUSY;
}
assert( !sqlite3SafetyCheck(db) );
/* FIX ME: db->magic may be set to SQLITE_MAGIC_CLOSED if the database
** cannot be opened for some reason. So this routine needs to run in
** that case. But maybe there should be an extra magic value for the
** "failed to open" state.
*/
if( db->magic!=SQLITE_MAGIC_CLOSED && sqlite3SafetyOn(db) ){
/* printf("DID NOT CLOSE\n"); fflush(stdout); */
return SQLITE_ERROR;
}
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, 0);
assert( db->nDb<=2 );
assert( db->aDb==db->aDbStatic );
for(i=sqliteHashFirst(&db->aFunc); i; i=sqliteHashNext(i)){
FuncDef *pFunc, *pNext;
for(pFunc = (FuncDef*)sqliteHashData(i); pFunc; pFunc=pNext){
pNext = pFunc->pNext;
sqliteFree(pFunc);
}
}
for(i=sqliteHashFirst(&db->aCollSeq); i; i=sqliteHashNext(i)){
CollSeq *pColl = (CollSeq *)sqliteHashData(i);
sqliteFree(pColl);
}
sqlite3HashClear(&db->aCollSeq);
sqlite3HashClear(&db->aFunc);
sqlite3Error(db, SQLITE_OK, 0); /* Deallocates any cached error strings. */
if( db->pErr ){
sqlite3ValueFree(db->pErr);
}
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?
*/
sqliteFree(db->aDb[1].pSchema);
sqliteFree(db);
sqlite3ReleaseThreadData();
return SQLITE_OK;
}
/*
** Cause any pending operation to stop at its earliest opportunity.
*/
void sqlite3_interrupt(sqlite3 *db){
if( !sqlite3SafetyCheck(db) ){
db->flags |= SQLITE_Interrupt;
}
}
/*
** 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,
int enc,
void* pCtx,
int(*xCompare)(void*,int,const void*,int,const void*),
void(*xDel)(void*)
){
CollSeq *pColl;
int enc2;
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
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 & ~SQLITE_UTF16_ALIGNED;
if( enc2==SQLITE_UTF16 ){
enc2 = SQLITE_UTF16NATIVE;
}
if( (enc2&~3)!=0 ){
sqlite3Error(db, SQLITE_ERROR, "unknown encoding");
return SQLITE_ERROR;
}
/* 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, strlen(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 = (CollSeq*)sqlite3HashFind(&db->aCollSeq, zName, strlen(zName));
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, strlen(zName), 1);
if( pColl ){
pColl->xCmp = xCompare;
pColl->pUser = pCtx;
pColl->xDel = xDel;
pColl->enc = enc2 | (enc & SQLITE_UTF16_ALIGNED);
}
sqlite3Error(db, SQLITE_OK, 0);
return SQLITE_OK;
}
