1 files changed, 359 insertions, 0 deletions
diff --git a/phpBB/phpbb/db/driver/sqlite.php b/phpBB/phpbb/db/driver/sqlite.php
new file mode 100644
index 0000000000..59ec895c0f
--- /dev/null
+++ b/phpBB/phpbb/db/driver/sqlite.php
@@ -0,0 +1,359 @@
+<?php
+/**
+*
+* @package dbal
+* @copyright (c) 2005 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+namespace phpbb\db\driver;
+
+/**
+* Sqlite Database Abstraction Layer
+* Minimum Requirement: 2.8.2+
+* @package dbal
+*/
+class sqlite extends \phpbb\db\driver\driver
+{
+	var $connect_error = '';
+
+	/**
+	* Connect to server
+	*/
+	function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false)
+	{
+		$this->persistency = $persistency;
+		$this->user = $sqluser;
+		$this->server = $sqlserver . (($port) ? ':' . $port : '');
+		$this->dbname = $database;
+
+		$error = '';
+		if ($this->persistency)
+		{
+			if (!function_exists('sqlite_popen'))
+			{
+				$this->connect_error = 'sqlite_popen function does not exist, is sqlite extension installed?';
+				return $this->sql_error('');
+			}
+			$this->db_connect_id = @sqlite_popen($this->server, 0666, $error);
+		}
+		else
+		{
+			if (!function_exists('sqlite_open'))
+			{
+				$this->connect_error = 'sqlite_open function does not exist, is sqlite extension installed?';
+				return $this->sql_error('');
+			}
+			$this->db_connect_id = @sqlite_open($this->server, 0666, $error);
+		}
+
+		if ($this->db_connect_id)
+		{
+			@sqlite_query('PRAGMA short_column_names = 1', $this->db_connect_id);
+//			@sqlite_query('PRAGMA encoding = "UTF-8"', $this->db_connect_id);
+		}
+
+		return ($this->db_connect_id) ? true : array('message' => $error);
+	}
+
+	/**
+	* Version information about used database
+	* @param bool $raw if true, only return the fetched sql_server_version
+	* @param bool $use_cache if true, it is safe to retrieve the stored value from the cache
+	* @return string sql server version
+	*/
+	function sql_server_info($raw = false, $use_cache = true)
+	{
+		global $cache;
+
+		if (!$use_cache || empty($cache) || ($this->sql_server_version = $cache->get('sqlite_version')) === false)
+		{
+			$result = @sqlite_query('SELECT sqlite_version() AS version', $this->db_connect_id);
+			$row = @sqlite_fetch_array($result, SQLITE_ASSOC);
+
+			$this->sql_server_version = (!empty($row['version'])) ? $row['version'] : 0;
+
+			if (!empty($cache) && $use_cache)
+			{
+				$cache->put('sqlite_version', $this->sql_server_version);
+			}
+		}
+
+		return ($raw) ? $this->sql_server_version : 'SQLite ' . $this->sql_server_version;
+	}
+
+	/**
+	* SQL Transaction
+	* @access private
+	*/
+	function _sql_transaction($status = 'begin')
+	{
+		switch ($status)
+		{
+			case 'begin':
+				return @sqlite_query('BEGIN', $this->db_connect_id);
+			break;
+
+			case 'commit':
+				return @sqlite_query('COMMIT', $this->db_connect_id);
+			break;
+
+			case 'rollback':
+				return @sqlite_query('ROLLBACK', $this->db_connect_id);
+			break;
+		}
+
+		return true;
+	}
+
+	/**
+	* Base query method
+	*
+	* @param	string	$query		Contains the SQL query which shall be executed
+	* @param	int		$cache_ttl	Either 0 to avoid caching or the time in seconds which the result shall be kept in cache
+	* @return	mixed				When casted to bool the returned value returns true on success and false on failure
+	*
+	* @access	public
+	*/
+	function sql_query($query = '', $cache_ttl = 0)
+	{
+		if ($query != '')
+		{
+			global $cache;
+
+			// EXPLAIN only in extra debug mode
+			if (defined('DEBUG'))
+			{
+				$this->sql_report('start', $query);
+			}
+
+			$this->query_result = ($cache && $cache_ttl) ? $cache->sql_load($query) : false;
+			$this->sql_add_num_queries($this->query_result);
+
+			if ($this->query_result === false)
+			{
+				if (($this->query_result = @sqlite_query($query, $this->db_connect_id)) === false)
+				{
+					$this->sql_error($query);
+				}
+
+				if (defined('DEBUG'))
+				{
+					$this->sql_report('stop', $query);
+				}
+
+				if ($cache && $cache_ttl)
+				{
+					$this->open_queries[(int) $this->query_result] = $this->query_result;
+					$this->query_result = $cache->sql_save($this, $query, $this->query_result, $cache_ttl);
+				}
+				else if (strpos($query, 'SELECT') === 0 && $this->query_result)
+				{
+					$this->open_queries[(int) $this->query_result] = $this->query_result;
+				}
+			}
+			else if (defined('DEBUG'))
+			{
+				$this->sql_report('fromcache', $query);
+			}
+		}
+		else
+		{
+			return false;
+		}
+
+		return $this->query_result;
+	}
+
+	/**
+	* Build LIMIT query
+	*/
+	function _sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0)
+	{
+		$this->query_result = false;
+
+		// if $total is set to 0 we do not want to limit the number of rows
+		if ($total == 0)
+		{
+			$total = -1;
+		}
+
+		$query .= "\n LIMIT " . ((!empty($offset)) ? $offset . ', ' . $total : $total);
+
+		return $this->sql_query($query, $cache_ttl);
+	}
+
+	/**
+	* Return number of affected rows
+	*/
+	function sql_affectedrows()
+	{
+		return ($this->db_connect_id) ? @sqlite_changes($this->db_connect_id) : false;
+	}
+
+	/**
+	* Fetch current row
+	*/
+	function sql_fetchrow($query_id = false)
+	{
+		global $cache;
+
+		if ($query_id === false)
+		{
+			$query_id = $this->query_result;
+		}
+
+		if ($cache && $cache->sql_exists($query_id))
+		{
+			return $cache->sql_fetchrow($query_id);
+		}
+
+		return ($query_id !== false) ? @sqlite_fetch_array($query_id, SQLITE_ASSOC) : false;
+	}
+
+	/**
+	* Seek to given row number
+	* rownum is zero-based
+	*/
+	function sql_rowseek($rownum, &$query_id)
+	{
+		global $cache;
+
+		if ($query_id === false)
+		{
+			$query_id = $this->query_result;
+		}
+
+		if ($cache && $cache->sql_exists($query_id))
+		{
+			return $cache->sql_rowseek($rownum, $query_id);
+		}
+
+		return ($query_id !== false) ? @sqlite_seek($query_id, $rownum) : false;
+	}
+
+	/**
+	* Get last inserted id after insert statement
+	*/
+	function sql_nextid()
+	{
+		return ($this->db_connect_id) ? @sqlite_last_insert_rowid($this->db_connect_id) : false;
+	}
+
+	/**
+	* Free sql result
+	*/
+	function sql_freeresult($query_id = false)
+	{
+		global $cache;
+
+		if ($query_id === false)
+		{
+			$query_id = $this->query_result;
+		}
+
+		if ($cache && !is_object($query_id) && $cache->sql_exists($query_id))
+		{
+			return $cache->sql_freeresult($query_id);
+		}
+
+		return true;
+	}
+
+	/**
+	* Escape string used in sql query
+	*/
+	function sql_escape($msg)
+	{
+		return @sqlite_escape_string($msg);
+	}
+
+	/**
+	* Correctly adjust LIKE expression for special characters
+	* For SQLite an underscore is a not-known character... this may change with SQLite3
+	*/
+	function sql_like_expression($expression)
+	{
+		// Unlike LIKE, GLOB is case sensitive (unfortunatly). SQLite users need to live with it!
+		// We only catch * and ? here, not the character map possible on file globbing.
+		$expression = str_replace(array(chr(0) . '_', chr(0) . '%'), array(chr(0) . '?', chr(0) . '*'), $expression);
+
+		$expression = str_replace(array('?', '*'), array("\?", "\*"), $expression);
+		$expression = str_replace(array(chr(0) . "\?", chr(0) . "\*"), array('?', '*'), $expression);
+
+		return 'GLOB \'' . $this->sql_escape($expression) . '\'';
+	}
+
+	/**
+	* return sql error array
+	* @access private
+	*/
+	function _sql_error()
+	{
+		if (function_exists('sqlite_error_string'))
+		{
+			$error = array(
+				'message'	=> @sqlite_error_string(@sqlite_last_error($this->db_connect_id)),
+				'code'		=> @sqlite_last_error($this->db_connect_id),
+			);
+		}
+		else
+		{
+			$error = array(
+				'message'	=> $this->connect_error,
+				'code'		=> '',
+			);
+		}
+
+		return $error;
+	}
+
+	/**
+	* Build db-specific query data
+	* @access private
+	*/
+	function _sql_custom_build($stage, $data)
+	{
+		return $data;
+	}
+
+	/**
+	* Close sql connection
+	* @access private
+	*/
+	function _sql_close()
+	{
+		return @sqlite_close($this->db_connect_id);
+	}
+
+	/**
+	* Build db-specific report
+	* @access private
+	*/
+	function _sql_report($mode, $query = '')
+	{
+		switch ($mode)
+		{
+			case 'start':
+			break;
+
+			case 'fromcache':
+				$endtime = explode(' ', microtime());
+				$endtime = $endtime[0] + $endtime[1];
+
+				$result = @sqlite_query($query, $this->db_connect_id);
+				while ($void = @sqlite_fetch_array($result, SQLITE_ASSOC))
+				{
+					// Take the time spent on parsing rows into account
+				}
+
+				$splittime = explode(' ', microtime());
+				$splittime = $splittime[0] + $splittime[1];
+
+				$this->sql_report('record_fromcache', $query, $endtime, $splittime);
+
+			break;
+		}
+	}
+}