added database connectors and cleaned up configuration.

laravel/database/connectors/connector.php

@@ -0,0 +1,41 @@
+<?php namespace Laravel\Database\Connectors; use PDO;
+
+abstract class Connector {
+
+	/**
+	 * The PDO connection options.
+	 *
+	 * @var array
+	 */
+	protected $options = array(
+			PDO::ATTR_CASE => PDO::CASE_LOWER,
+			PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+			PDO::ATTR_ORACLE_NULLS => PDO::NULL_NATURAL,
+			PDO::ATTR_STRINGIFY_FETCHES => false,
+			PDO::ATTR_EMULATE_PREPARES => false,
+	);
+
+	/**
+	 * Establish a PDO database connection for a given database configuration.
+	 *
+	 * @param  array  $config
+	 * @return PDO
+	 */
+	abstract public function connect($config);
+
+	/**
+	 * Get the PDO connection options for a given database configuration.
+	 *
+	 * Developer specified options will override the default connection options.
+	 *
+	 * @param  array  $config
+	 * @return array
+	 */
+	protected function options($config)
+	{
+		$options = (isset($config['options'])) ? $config['options'] : array();
+
+		return array_merge($this->options, $options);
+	}
+
+}

laravel/database/connectors/mysql.php

@@ -0,0 +1,47 @@
+<?php namespace Laravel\Database\Connectors; use PDO;
+
+class MySQL extends Connector {
+
+	/**
+	 * Establish a PDO database connection for a given database configuration.
+	 *
+	 * @param  array  $config
+	 * @return PDO
+	 */
+	public function connect($config)
+	{
+		$connection = new PDO($this->dsn($config), $config['username'], $config['password'], $this->options($config));
+
+		if (isset($config['charset']))
+		{
+			$connection->prepare("SET NAMES '{$config['charset']}'")->execute();
+		}
+
+		return $connection;
+	}
+
+	/**
+	 * Format the DSN connection string for a MySQL connection.
+	 *
+	 * @param  array   $config
+	 * @return string
+	 */
+	protected function dsn($config)
+	{
+		// Format the initial MySQL PDO connection string. These options are required
+		// for every MySQL connection that is established. The connection strings
+		// have the following convention: "mysql:host=hostname;dbname=database"
+		$dsn = sprintf('%s:host=%s;dbname=%s', $config['driver'], $config['host'], $config['database']);
+
+		// Check for any optional MySQL PDO options. These options are not required
+		// to establish a PDO connection; however, may be needed in certain server
+		// or hosting environments used by the developer.
+		foreach (array('port', 'unix_socket') as $key => $value)
+		{
+			if (isset($config[$key])) $dsn .= ";{$key}={$value}";
+		}
+
+		return $dsn;
+	}
+
+}

laravel/database/connectors/postgres.php

@@ -0,0 +1,47 @@
+<?php namespace Laravel\Database\Connectors; use PDO;
+
+class Postgres extends Connector {
+
+	/**
+	 * Establish a PDO database connection for a given database configuration.
+	 *
+	 * @param  array  $config
+	 * @return PDO
+	 */
+	public function connect($config)
+	{
+		$connection = new PDO($this->dsn($config), $config['username'], $config['password'], $this->options($config));
+
+		if (isset($config['charset']))
+		{
+			$connection->prepare("SET NAMES '{$config['charset']}'")->execute();
+		}
+
+		return $connection;
+	}
+
+	/**
+	 * Format the DSN connection string for a Postgres connection.
+	 *
+	 * @param  array   $config
+	 * @return string
+	 */
+	protected function dsn($config)
+	{
+		// Format the initial Postgres PDO connection string. These options are required
+		// for every Postgres connection that is established. The connection strings
+		// have the following convention: "pgsql:host=hostname;dbname=database"
+		$dsn = sprintf('%s:host=%s;dbname=%s', $config['driver'], $config['host'], $config['database']);
+
+		// Check for any optional Postgres PDO options. These options are not required
+		// to establish a PDO connection; however, may be needed in certain server
+		// or hosting environments used by the developer.
+		foreach (array('port', 'unix_socket') as $key => $value)
+		{
+			if (isset($config[$key])) $dsn .= ";{$key}={$value}";
+		}
+
+		return $dsn;
+	}
+
+}

laravel/database/connectors/sqlite.php

@@ -0,0 +1,31 @@
+<?php namespace Laravel\Database\Connectors; use PDO;
+
+class SQLite extends Connector {
+
+	/**
+	 * Establish a PDO database connection for a given database configuration.
+	 *
+	 * @param  array  $config
+	 * @return PDO
+	 */
+	public function connect($config)
+	{
+		$options = $this->options($config);
+
+		if ($config['database'] == ':memory:')
+		{
+			return new PDO('sqlite::memory:', null, null, $options);
+		}
+		elseif (file_exists($path = DATABASE_PATH.$config['database'].'.sqlite'))
+		{
+			return new PDO('sqlite:'.$path, null, null, $options);
+		}
+		elseif (file_exists($config['database']))
+		{
+			return new PDO('sqlite:'.$config['database'], null, null, $options);
+		}
+
+		throw new \Exception("SQLite database [{$config['database']}] could not be found.");
+	}
+
+}