diff -r 000000000000 -r b7aa2b626807 extensions/sqlite/driver/SqDriver.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/extensions/sqlite/driver/SqDriver.cpp	Sun Mar 30 07:00:22 2008 +0000
@@ -0,0 +1,285 @@
+/**
+ * vim: set ts=4 :
+ * =============================================================================
+ * SourceMod SQLite Extension
+ * Copyright (C) 2004-2008 AlliedModders LLC.  All rights reserved.
+ * =============================================================================
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, version 3.0, as published by the
+ * Free Software Foundation.
+ * 
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * As a special exception, AlliedModders LLC gives you permission to link the
+ * code of this program (as well as its derivative works) to "Half-Life 2," the
+ * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
+ * by the Valve Corporation.  You must obey the GNU General Public License in
+ * all respects for all other code used.  Additionally, AlliedModders LLC grants
+ * this exception to all derivative works.  AlliedModders LLC defines further
+ * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
+ * or <http://www.sourcemod.net/license.php>.
+ *
+ * Version: $Id$
+ */
+
+#include <sm_platform.h>
+#include "extension.h"
+#include "SqDriver.h"
+#include "SqDatabase.h"
+
+SqDriver g_SqDriver;
+
+unsigned int strncopy(char *dest, const char *src, size_t count)
+{
+	if (!count)
+	{
+		return 0;
+	}
+
+	char *start = dest;
+	while ((*src) && (--count))
+	{
+		*dest++ = *src++;
+	}
+	*dest = '\0';
+
+	return (dest - start);
+}
+
+int busy_handler(void *unused1, int unused2)
+{
+#if defined PLATFORM_WINDOWS
+	Sleep(100);
+#elif defined PLATFORM_LINUX
+	usleep(100000);
+#endif
+	return 1;
+}
+
+SqDriver::SqDriver()
+{
+	m_Handle = BAD_HANDLE;
+	m_pOpenLock = NULL;
+	m_bThreadSafe = false;
+}
+
+void SqDriver::Initialize()
+{
+	m_pOpenLock = threader->MakeMutex();
+
+	InitializeThreadSafety();
+}
+
+void SqDriver::Shutdown()
+{
+	if (m_pOpenLock)
+	{
+		m_pOpenLock->DestroyThis();
+	}
+
+	if (m_bThreadSafe)
+	{
+		sqlite3_enable_shared_cache(0);
+	}
+}
+
+bool SqDriver::IsThreadSafe()
+{
+	return true;
+}
+
+bool SqDriver::InitializeThreadSafety()
+{
+	if (m_bThreadSafe)
+	{
+		return true;
+	}
+
+	if (sqlite3_threadsafe() == 0)
+	{
+		return false;
+	}
+
+	if (sqlite3_enable_shared_cache(1) != SQLITE_OK)
+	{
+		return false;
+	}
+
+	m_bThreadSafe = true;
+
+	return true;
+}
+
+void SqDriver::ShutdownThreadSafety()
+{
+	return;
+}
+
+IdentityToken_t *SqDriver::GetIdentity()
+{
+	return myself->GetIdentity();
+}
+
+const char *SqDriver::GetProductName()
+{
+	return "SQLite";
+}
+
+const char *SqDriver::GetIdentifier()
+{
+	return "sqlite";
+}
+
+Handle_t SqDriver::GetHandle()
+{
+	if (m_Handle == BAD_HANDLE)
+	{
+		m_Handle = dbi->CreateHandle(DBHandle_Driver, this, myself->GetIdentity());
+	}
+
+	return m_Handle;
+}
+
+inline bool IsPathSepChar(char c)
+{
+#if defined PLATFORM_WINDOWS
+	return (c == '\\' || c == '/');
+#elif defined PLATFORM_LINUX
+	return (c == '/');
+#endif
+}
+
+IDatabase *SqDriver::Connect(const DatabaseInfo *info, bool persistent, char *error, size_t maxlength)
+{
+	/* We wrap most of the open process in a mutex just to be safe */
+	m_pOpenLock->Lock();
+
+	/* Format our path */
+	char path[PLATFORM_MAX_PATH];
+	size_t len = libsys->PathFormat(path, sizeof(path), "sqlite/%s", info->database);
+
+	/* Chop any filename off */
+	for (size_t i = len-1;
+		 i >= 0 && i <= len-1;
+		 i--)
+	{
+		if (IsPathSepChar(path[i]))
+		{
+			path[i] = '\0';
+			break;
+		}
+	}
+
+	/* Test the full path */
+	char fullpath[PLATFORM_MAX_PATH];
+	g_pSM->BuildPath(Path_SM, fullpath, sizeof(fullpath), "data/%s", path);
+	if (!libsys->IsPathDirectory(fullpath))
+	{
+		/* Make sure the data folder exists */
+		len = g_pSM->BuildPath(Path_SM, fullpath, sizeof(fullpath), "data");
+		if (!libsys->IsPathDirectory(fullpath))
+		{
+			if (!libsys->CreateFolder(fullpath))
+			{
+				strncopy(error, "Could not create or open \"data\" folder\"", maxlength);
+				m_pOpenLock->Unlock();
+				return NULL;
+			}
+		}
+
+		/* The data folder exists - create each subdir as needed! */
+		char *cur_ptr = path;
+
+		do
+		{
+			/* Find the next suitable path */
+			char *next_ptr = cur_ptr;
+			while (*next_ptr != '\0')
+			{
+				if (IsPathSepChar(*next_ptr))
+				{
+					*next_ptr = '\0';
+					next_ptr++;
+					break;
+				}
+				next_ptr++;
+			}
+			if (*next_ptr == '\0')
+			{
+				next_ptr = NULL;
+			}
+			len += libsys->PathFormat(&fullpath[len], sizeof(fullpath)-len, "/%s", cur_ptr);
+			if (!libsys->IsPathDirectory(fullpath) && !libsys->CreateFolder(fullpath))
+			{
+				break;
+			}
+			cur_ptr = next_ptr;
+		} while (cur_ptr);
+	}
+
+	/* Build the FINAL path. */
+	g_pSM->BuildPath(Path_SM, fullpath, sizeof(fullpath), "data/sqlite/%s.sq3", info->database);
+
+	/* If we're requesting a persistent connection, see if something is already open */
+	if (persistent)
+	{
+		/* See if anything in the cache matches */
+		List<SqDbInfo>::iterator iter;
+		for (iter = m_Cache.begin(); iter != m_Cache.end(); iter++)
+		{
+			if ((*iter).path.compare(fullpath) == 0)
+			{
+				(*iter).db->IncReferenceCount();
+				m_pOpenLock->Unlock();
+				return (*iter).db;
+			}
+		}
+	}
+
+	/* Try to open a new connection */
+	sqlite3 *sql;
+	int err = sqlite3_open(fullpath, &sql);
+	if (err != SQLITE_OK)
+	{
+		strncopy(error, sqlite3_errmsg(sql), maxlength);
+		sqlite3_close(sql);
+		m_pOpenLock->Unlock();
+		return NULL;
+	}
+
+	sqlite3_busy_handler(sql, busy_handler, NULL);
+
+	SqDatabase *pdb = new SqDatabase(sql, persistent);
+
+	if (persistent)
+	{
+		SqDbInfo pinfo;
+		pinfo.path = fullpath;
+		pinfo.db = pdb;
+		m_Cache.push_back(pinfo);
+	}
+
+	m_pOpenLock->Unlock();
+
+	return pdb;
+}
+
+void SqDriver::RemovePersistent(IDatabase *pdb)
+{
+	List<SqDbInfo>::iterator iter;
+	for (iter = m_Cache.begin(); iter != m_Cache.end(); iter++)
+	{
+		if ((*iter).db == pdb)
+		{
+			iter = m_Cache.erase(iter);
+			return;
+		}
+	}
+}