Misc cleanup.

Start of SQL Standard-based driver.

drivers/standard_sql.php

@@ -0,0 +1,80 @@
+<?php
+/**
+ * Query
+ *
+ * Free Query Builder / Database Abstraction Layer
+ *
+ * @author 		Timothy J. Warren
+ * @copyright	Copyright (c) 2012
+ * @link 		https://github.com/aviat4ion/Query
+ * @license 	http://philsturgeon.co.uk/code/dbad-license
+ */
+
+// --------------------------------------------------------------------------
+
+/**
+ * Dummy class for standardized sql
+ */
+class Standard_SQL extends DB_SQL {
+
+	/**
+	 * Convenience public function to create a new table
+	 *
+	 * @param string $name //Name of the table
+	 * @param array $columns //columns as straight array and/or column => type pairs
+	 * @param array $constraints // column => constraint pairs
+	 * @param array $indexes // column => index pairs
+	 * @return  string
+	 */
+	public function create_table($names, $columns, array $constraints=array(), array $indexes=array())
+	{
+		// @todo Implement
+	}
+
+	// --------------------------------------------------------------------------
+
+	/**
+	 * SQL to drop the specified table
+	 *
+	 * @param string $name
+	 * @return string
+	 */
+	public function delete_table($name)
+	{
+		// @todo Implement
+	}
+
+	// --------------------------------------------------------------------------
+
+	/**
+	 * Random ordering keyword
+	 *
+	 * @return string
+	 */
+	public function random()
+	{
+		// @todo check if standardized
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------------
+
+	/**
+	 * Limit clause
+	 *
+	 * @param string $sql
+	 * @param int $limit
+	 * @param int $offset
+	 * @return string
+	 */
+	public function limit($sql, $limit, $offset=FALSE)
+	{
+		if (is_numeric($offset))
+		{
+			$sql .= ' OFFSET '.$offset.' ROWS ';
+		}
+
+		$sql .= ' FETCH FIRST '.$limit.' ROWS ONLY ';
+	}
+}
+// End of standard_sql.php

query_builder.php

@@ -21,8 +21,6 @@ class Query_Builder {
 	// Compiled query component strings
 	private $select_string,
 		$from_string,
-		$insert_string,
-		$update_string,
 		$set_string,
 		$order_string,
 		$group_string;
@@ -78,29 +76,37 @@ class Query_Builder {
 		$params->type = strtolower($params->type);
 		$dbtype = ($params->type !== 'postgresql') ? $params->type : 'pgsql';
 
-		// Initiate the constructor for the selected database
+		// Create the dsn for the database to connect to
 		switch($dbtype)
 		{
 			default:
-				$this->db = new $dbtype("host={$params->host};port={$params->port};dbname={$params->database}", $params->user, $params->pass);
+				$dsn = "host={$params->host};dbname={$params->database}";
+
+				if ( ! empty($params->port))
+				{
+					$dsn .= ";port={$params->port}";
+				}
 			break;
 
 			case "sqlite":
-				if ( ! empty($params->user) &&  ! empty($params->pass))
-				{
-					$this->db = new $dbtype($params->file, $params->user, $params->pass);
-				}
-				else
-				{
-					$this->db = new $dbtype($params->file);
-				}
+				$dsn = $params->file;
 			break;
 
 			case "firebird":
-				$this->db = new $dbtype("{$params->host}:{$params->file}", $params->user, $params->pass);
+				$dsn = "{$params->host}:{$params->file}";
 			break;
 		}
 
+		// Create the database connection
+		if ( ! empty($params->user))
+		{
+			$this->db = new $dbtype($dsn, $params->user, $params->pass);
+		}
+		else
+		{
+			$this->db = new $dbtype($dsn);
+		}
+
 		// Make things just slightly shorter
 		$this->sql =& $this->db->sql;
 	}