dvander@1203: /**
dvander@1203:  * vim: set ts=4 :
ds@1330:  * =============================================================================
dvander@1226:  * SourceMod SQLite Extension
ds@1947:  * Copyright (C) 2004-2008 AlliedModders LLC.  All rights reserved.
ds@1330:  * =============================================================================
dvander@1203:  *
ds@1330:  * This program is free software; you can redistribute it and/or modify it under
ds@1330:  * the terms of the GNU General Public License, version 3.0, as published by the
ds@1330:  * Free Software Foundation.
dvander@1226:  * 
ds@1330:  * This program is distributed in the hope that it will be useful, but WITHOUT
ds@1330:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
ds@1330:  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
ds@1330:  * details.
dvander@1226:  *
ds@1330:  * You should have received a copy of the GNU General Public License along with
ds@1330:  * this program.  If not, see <http://www.gnu.org/licenses/>.
dvander@1226:  *
ds@1330:  * As a special exception, AlliedModders LLC gives you permission to link the
ds@1330:  * code of this program (as well as its derivative works) to "Half-Life 2," the
ds@1330:  * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
ds@1330:  * by the Valve Corporation.  You must obey the GNU General Public License in
ds@1330:  * all respects for all other code used.  Additionally, AlliedModders LLC grants
ds@1330:  * this exception to all derivative works.  AlliedModders LLC defines further
ds@1330:  * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
ds@1330:  * or <http://www.sourcemod.net/license.php>.
dvander@1203:  *
dvander@1203:  * Version: $Id$
dvander@1203:  */
dvander@1203: 
dvander@1203: #include "extension.h"
dvander@1203: #include "SqDatabase.h"
dvander@1203: #include "SqQuery.h"
dvander@1203: 
dvander@1203: SqDatabase::SqDatabase(sqlite3 *sq3, bool persistent) : 
dvander@1203: 	m_sq3(sq3), m_refcount(1), m_pFullLock(NULL), m_Persistent(persistent)
dvander@1203: {
dvander@1203: 	m_pRefLock = threader->MakeMutex();
dvander@1203: }
dvander@1203: 
dvander@1203: SqDatabase::~SqDatabase()
dvander@1203: {
dvander@1203: 	m_pRefLock->DestroyThis();
dvander@1203: 	if (m_pFullLock)
dvander@1203: 	{
dvander@1203: 		m_pFullLock->DestroyThis();
dvander@1203: 	}
dvander@1203: 	sqlite3_close(m_sq3);
dvander@1203: }
dvander@1203: 
dvander@1203: void SqDatabase::IncReferenceCount()
dvander@1203: {
dvander@1203: 	m_pRefLock->Lock();
dvander@1203: 	m_refcount++;
dvander@1203: 	m_pRefLock->Unlock();
dvander@1203: }
dvander@1203: 
dvander@1203: bool SqDatabase::Close()
dvander@1203: {
dvander@1203: 	m_pRefLock->Lock();
dvander@1203: 	if (m_refcount > 1)
dvander@1203: 	{
dvander@1203: 		m_refcount--;
dvander@1203: 		m_pRefLock->Unlock();
dvander@1203: 		return false;
dvander@1203: 	}
dvander@1203: 	m_pRefLock->Unlock();
dvander@1203: 
dvander@1203: 	if (m_Persistent)
dvander@1203: 	{
dvander@1203: 		g_SqDriver.RemovePersistent(this);
dvander@1203: 	}
dvander@1203: 
dvander@1203: 	delete this;
dvander@1203: 
dvander@1203: 	return true;
dvander@1203: }
dvander@1203: 
dvander@1203: const char *SqDatabase::GetError(int *errorCode/* =NULL */)
dvander@1203: {
dvander@1203: 	return sqlite3_errmsg(m_sq3);
dvander@1203: }
dvander@1203: 
dvander@1203: bool SqDatabase::LockForFullAtomicOperation()
dvander@1203: {
dvander@1203: 	if (!m_pFullLock)
dvander@1203: 	{
dvander@1203: 		m_pFullLock = threader->MakeMutex();
dvander@1203: 		if (!m_pFullLock)
dvander@1203: 		{
dvander@1203: 			return false;
dvander@1203: 		}
dvander@1203: 	}
dvander@1203: 
dvander@1203: 	m_pFullLock->Lock();
dvander@1203: 
dvander@1203: 	return true;
dvander@1203: }
dvander@1203: 
dvander@1203: void SqDatabase::UnlockFromFullAtomicOperation()
dvander@1203: {
dvander@1203: 	if (m_pFullLock)
dvander@1203: 	{
dvander@1203: 		m_pFullLock->Unlock();
dvander@1203: 	}
dvander@1203: }
dvander@1203: 
dvander@1203: IDBDriver *SqDatabase::GetDriver()
dvander@1203: {
dvander@1203: 	return &g_SqDriver;
dvander@1203: }
dvander@1203: 
dvander@1203: bool SqDatabase::QuoteString(const char *str, char buffer[], size_t maxlen, size_t *newSize)
dvander@1203: {
dvander@1203: 	char *res = sqlite3_snprintf(static_cast<int>(maxlen), buffer, "%q", str);
dvander@1203: 
dvander@1203: 	if (res != NULL && newSize != NULL)
dvander@1203: 	{
dvander@1203: 		*newSize = strlen(buffer);
dvander@1203: 	}
dvander@1203: 
dvander@1203: 	return (res != NULL);
dvander@1203: }
dvander@1203: 
dvander@1203: unsigned int SqDatabase::GetInsertID()
dvander@1203: {
dvander@1203: 	return (unsigned int)sqlite3_last_insert_rowid(m_sq3);
dvander@1203: }
dvander@1203: 
dvander@1203: unsigned int SqDatabase::GetAffectedRows()
dvander@1203: {
dvander@1203: 	return (unsigned int)sqlite3_changes(m_sq3);
dvander@1203: }
dvander@1203: 
dvander@1203: bool SqDatabase::DoSimpleQuery(const char *query)
dvander@1203: {
dvander@1203: 	IQuery *pQuery = DoQuery(query);
dvander@1203: 	if (!pQuery)
dvander@1203: 	{
dvander@1203: 		return false;
dvander@1203: 	}
dvander@1203: 	pQuery->Destroy();
dvander@1203: 	return true;
dvander@1203: }
dvander@1203: 
dvander@1203: /* this sounds like daiquiri.. i'm tired. */
dvander@1203: IQuery *SqDatabase::DoQuery(const char *query)
dvander@1203: {
dvander@1203: 	IPreparedQuery *pQuery = PrepareQuery(query, NULL, 0, NULL);
dvander@1203: 	if (!pQuery)
dvander@1203: 	{
dvander@1203: 		return NULL;
dvander@1203: 	}
dvander@1203: 	if (!pQuery->Execute())
dvander@1203: 	{
dvander@1203: 		pQuery->Destroy();
dvander@1203: 		return NULL;
dvander@1203: 	}
dvander@1203: 	return pQuery;
dvander@1203: }
dvander@1203: 
dvander@1912: bool SqDatabase::DoSimpleQueryEx(const char *query, size_t len)
dvander@1912: {
dvander@1912: 	IQuery *pQuery = DoQueryEx(query, len);
dvander@1912: 	if (!pQuery)
dvander@1912: 	{
dvander@1912: 		return false;
dvander@1912: 	}
dvander@1912: 	pQuery->Destroy();
dvander@1912: 	return true;
dvander@1912: }
dvander@1912: 
dvander@1912: IQuery *SqDatabase::DoQueryEx(const char *query, size_t len)
dvander@1912: {
dvander@1912: 	IPreparedQuery *pQuery = PrepareQueryEx(query, len, NULL, 0, NULL);
dvander@1912: 	if (!pQuery)
dvander@1912: 	{
dvander@1912: 		return NULL;
dvander@1912: 	}
dvander@1912: 	if (!pQuery->Execute())
dvander@1912: 	{
dvander@1912: 		pQuery->Destroy();
dvander@1912: 		return NULL;
dvander@1912: 	}
dvander@1912: 	return pQuery;
dvander@1912: }
dvander@1912: 
dvander@1912: IPreparedQuery *SqDatabase::PrepareQuery(const char *query, 
dvander@1912: 										 char *error, 
dvander@1912: 										 size_t maxlength, 
dvander@1912: 										 int *errCode/* =NULL */)
dvander@1203: {
dvander@1203: 	sqlite3_stmt *stmt = NULL;
dvander@1203: 	if ((m_LastErrorCode = sqlite3_prepare_v2(m_sq3, query, -1, &stmt, NULL)) != SQLITE_OK
dvander@1203: 		|| !stmt)
dvander@1203: 	{
dvander@1203: 		const char *msg;
dvander@1203: 		if (m_LastErrorCode != SQLITE_OK)
dvander@1203: 		{
dvander@1203: 			msg = sqlite3_errmsg(m_sq3);
dvander@1203: 		} else {
dvander@1203: 			msg = "Invalid query string";
dvander@1448: 			m_LastErrorCode = SQLITE_ERROR;
dvander@1203: 		}
dvander@1203: 		if (error)
dvander@1203: 		{
dvander@1203: 			strncopy(error, msg, maxlength);
dvander@1203: 		}
dvander@1203: 		m_LastError.assign(msg);
dvander@1912: 		return NULL;
dvander@1912: 	}
dvander@1912: 	return new SqQuery(this, stmt);
dvander@1912: }
dvander@1912: 
dvander@1912: IPreparedQuery *SqDatabase::PrepareQueryEx(const char *query, 
dvander@1912: 										   size_t len, 
dvander@1912: 										   char *error, 
dvander@1912: 										   size_t maxlength, 
dvander@1912: 										   int *errCode/* =NULL */)
dvander@1912: {
dvander@1912: 	sqlite3_stmt *stmt = NULL;
dvander@1912: 	if ((m_LastErrorCode = sqlite3_prepare_v2(m_sq3, query, len, &stmt, NULL)) != SQLITE_OK
dvander@1912: 		|| !stmt)
dvander@1912: 	{
dvander@1912: 		const char *msg;
dvander@1912: 		if (m_LastErrorCode != SQLITE_OK)
dvander@1203: 		{
dvander@1912: 			msg = sqlite3_errmsg(m_sq3);
dvander@1912: 		} else {
dvander@1912: 			msg = "Invalid query string";
dvander@1912: 			m_LastErrorCode = SQLITE_ERROR;
dvander@1203: 		}
dvander@1912: 		if (error)
dvander@1912: 		{
dvander@1912: 			strncopy(error, msg, maxlength);
dvander@1912: 		}
dvander@1912: 		m_LastError.assign(msg);
dvander@1203: 		return NULL;
dvander@1203: 	}
dvander@1203: 	return new SqQuery(this, stmt);
dvander@1203: }
dvander@1203: 
dvander@1203: sqlite3 *SqDatabase::GetDb()
dvander@1203: {
dvander@1203: 	return m_sq3;
dvander@1203: }