Merge CodeIgniter 3 support

1 files changed, 413 insertions, 0 deletions

diff --git a/system/database/drivers/ibase/ibase_driver.php b/system/database/drivers/ibase/ibase_driver.php
new file mode 100644
index 000000000..3069d6699
--- /dev/null
+++ b/system/database/drivers/ibase/ibase_driver.php
@@ -0,0 +1,413 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
+ * @license	http://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Firebird/Interbase Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/user_guide/database/
+ */
+class CI_DB_ibase_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'ibase';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RAND()', 'RAND()');
+
+	/**
+	 * IBase Transaction status flag
+	 *
+	 * @var	resource
+	 */
+	protected $_ibase_trans;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		return ($persistent === TRUE)
+			? ibase_pconnect($this->hostname.':'.$this->database, $this->username, $this->password, $this->char_set)
+			: ibase_connect($this->hostname.':'.$this->database, $this->username, $this->password, $this->char_set);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		if (($service = ibase_service_attach($this->hostname, $this->username, $this->password)))
+		{
+			$this->data_cache['version'] = ibase_server_info($service, IBASE_SVC_SERVER_VERSION);
+
+			// Don't keep the service open
+			ibase_service_detach($service);
+			return $this->data_cache['version'];
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	resource
+	 */
+	protected function _execute($sql)
+	{
+		return ibase_query(isset($this->_ibase_trans) ? $this->_ibase_trans : $this->conn_id, $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		if (($trans_handle = ibase_trans($this->conn_id)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$this->_ibase_trans = $trans_handle;
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		if (ibase_commit($this->_ibase_trans))
+		{
+			$this->_ibase_trans = NULL;
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		if (ibase_rollback($this->_ibase_trans))
+		{
+			$this->_ibase_trans = NULL;
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return ibase_affected_rows($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @param	string	$generator_name
+	 * @param	int	$inc_by
+	 * @return	int
+	 */
+	public function insert_id($generator_name, $inc_by = 0)
+	{
+		//If a generator hasn't been used before it will return 0
+		return ibase_gen_id('"'.$generator_name.'"', $inc_by);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT TRIM("RDB$RELATION_NAME") AS TABLE_NAME FROM "RDB$RELATIONS" WHERE "RDB$RELATION_NAME" NOT LIKE \'RDB$%\' AND "RDB$RELATION_NAME" NOT LIKE \'MON$%\'';
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql.' AND TRIM("RDB$RELATION_NAME") AS TABLE_NAME LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT TRIM("RDB$FIELD_NAME") AS COLUMN_NAME FROM "RDB$RELATION_FIELDS" WHERE "RDB$RELATION_NAME" = '.$this->escape($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT "rfields"."RDB$FIELD_NAME" AS "name",
+				CASE "fields"."RDB$FIELD_TYPE"
+					WHEN 7 THEN \'SMALLINT\'
+					WHEN 8 THEN \'INTEGER\'
+					WHEN 9 THEN \'QUAD\'
+					WHEN 10 THEN \'FLOAT\'
+					WHEN 11 THEN \'DFLOAT\'
+					WHEN 12 THEN \'DATE\'
+					WHEN 13 THEN \'TIME\'
+					WHEN 14 THEN \'CHAR\'
+					WHEN 16 THEN \'INT64\'
+					WHEN 27 THEN \'DOUBLE\'
+					WHEN 35 THEN \'TIMESTAMP\'
+					WHEN 37 THEN \'VARCHAR\'
+					WHEN 40 THEN \'CSTRING\'
+					WHEN 261 THEN \'BLOB\'
+					ELSE NULL
+				END AS "type",
+				"fields"."RDB$FIELD_LENGTH" AS "max_length",
+				"rfields"."RDB$DEFAULT_VALUE" AS "default"
+			FROM "RDB$RELATION_FIELDS" "rfields"
+				JOIN "RDB$FIELDS" "fields" ON "rfields"."RDB$FIELD_SOURCE" = "fields"."RDB$FIELD_NAME"
+			WHERE "rfields"."RDB$RELATION_NAME" = '.$this->escape($table).'
+			ORDER BY "rfields"."RDB$FIELD_POSITION"';
+
+		return (($query = $this->query($sql)) !== FALSE)
+			? $query->result_object()
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => ibase_errcode(), 'message' => ibase_errmsg());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'DELETE FROM '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		// Limit clause depends on if Interbase or Firebird
+		if (stripos($this->version(), 'firebird') !== FALSE)
+		{
+			$select = 'FIRST '.$this->qb_limit
+				.($this->qb_offset ? ' SKIP '.$this->qb_offset : '');
+		}
+		else
+		{
+			$select = 'ROWS '
+				.($this->qb_offset ? $this->qb_offset.' TO '.($this->qb_limit + $this->qb_offset) : $this->qb_limit);
+		}
+
+		return preg_replace('`SELECT`i', 'SELECT '.$select, $sql, 1);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string|bool
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		ibase_close($this->conn_id);
+	}
+
+}