Initial commit

Signed-off-by: Florian Pritz <bluewind@xssn.at>

1 files changed, 375 insertions, 0 deletions

diff --git a/system/database/DB_forge.php b/system/database/DB_forge.php
new file mode 100644
index 000000000..4050e300f
--- /dev/null
+++ b/system/database/DB_forge.php
@@ -0,0 +1,375 @@
+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * Code Igniter
+ *
+ * An open source application development framework for PHP 4.3.2 or newer
+ *
+ * @package		CodeIgniter
+ * @author		ExpressionEngine Dev Team
+ * @copyright	Copyright (c) 2008 - 2009, EllisLab, Inc.
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @link		http://codeigniter.com
+ * @since		Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Database Utility Class
+ *
+ * @category	Database
+ * @author		ExpressionEngine Dev Team
+ * @link		http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_forge {
+
+	var $fields		 	= array();
+	var $keys			= array();
+	var $primary_keys 	= array();
+	var $db_char_set	=	'';
+
+	/**
+	 * Constructor
+	 *
+	 * Grabs the CI super object instance so we can access it.
+	 *
+	 */	
+	function CI_DB_forge()
+	{
+		// Assign the main database object to $this->db
+		$CI =& get_instance();
+		$this->db =& $CI->db;
+		log_message('debug', "Database Forge Class Initialized");
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create database
+	 *
+	 * @access	public
+	 * @param	string	the database name
+	 * @return	bool
+	 */
+	function create_database($db_name)
+	{
+		$sql = $this->_create_database($db_name);
+		
+		if (is_bool($sql))
+		{
+			return $sql;
+		}
+	
+		return $this->db->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop database
+	 *
+	 * @access	public
+	 * @param	string	the database name
+	 * @return	bool
+	 */
+	function drop_database($db_name)
+	{
+		$sql = $this->_drop_database($db_name);
+		
+		if (is_bool($sql))
+		{
+			return $sql;
+		}
+	
+		return $this->db->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Key
+	 *
+	 * @access	public
+	 * @param	string	key
+	 * @param	string	type
+	 * @return	void
+	 */
+	function add_key($key = '', $primary = FALSE)
+	{
+		if (is_array($key))
+		{
+			foreach($key as $one)
+			{
+				$this->add_key($one, $primary);
+			}
+			
+			return;
+		}
+	
+		if ($key == '')
+		{
+			show_error('Key information is required for that operation.');
+		}
+		
+		if ($primary === TRUE)
+		{
+			$this->primary_keys[] = $key;
+		}
+		else
+		{
+			$this->keys[] = $key;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Field
+	 *
+	 * @access	public
+	 * @param	string	collation
+	 * @return	void
+	 */
+	function add_field($field = '')
+	{
+		if ($field == '')
+		{
+			show_error('Field information is required.');
+		}
+		
+		if (is_string($field))
+		{
+			if ($field == 'id')
+			{
+				$this->add_field(array(
+										'id' => array(
+													'type' => 'INT',
+													'constraint' => 9,
+													'auto_increment' => TRUE
+													)
+								));
+				$this->add_key('id', TRUE);
+			}
+			else
+			{
+				if (strpos($field, ' ') === FALSE)
+				{
+					show_error('Field information is required for that operation.');
+				}
+				
+				$this->fields[] = $field;
+			}
+		}
+		
+		if (is_array($field))
+		{
+			$this->fields = array_merge($this->fields, $field);
+		}
+		
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Table
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @return	bool
+	 */
+	function create_table($table = '', $if_not_exists = FALSE)
+	{	
+		if ($table == '')
+		{
+			show_error('A table name is required for that operation.');
+		}
+			
+		if (count($this->fields) == 0)
+		{	
+			show_error('Field information is required.');
+		}
+
+		$sql = $this->_create_table($this->db->dbprefix.$table, $this->fields, $this->primary_keys, $this->keys, $if_not_exists);
+		
+		$this->_reset();
+		return $this->db->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop Table
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @return	bool
+	 */
+	function drop_table($table_name)
+	{
+		$sql = $this->_drop_table($this->db->dbprefix.$table_name);
+		
+		if (is_bool($sql))
+		{
+			return $sql;
+		}
+	
+		return $this->db->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rename Table
+	 *
+	 * @access	public
+	 * @param	string	the old table name
+	 * @param	string	the new table name
+	 * @return	bool
+	 */
+	function rename_table($table_name, $new_table_name)
+	{
+		if ($table_name == '' OR $new_table_name == '')
+		{
+			show_error('A table name is required for that operation.');
+		}
+			
+		$sql = $this->_rename_table($table_name, $new_table_name);
+		return $this->db->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Column Add
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	string	the column name
+	 * @param	string	the column definition
+	 * @return	bool
+	 */
+	function add_column($table = '', $field = array(), $after_field = '')
+	{
+		if ($table == '')
+		{
+			show_error('A table name is required for that operation.');
+		}
+
+		// add field info into field array, but we can only do one at a time
+		// so we cycle through
+
+		foreach ($field as $k => $v)
+		{
+			$this->add_field(array($k => $field[$k]));		
+
+			if (count($this->fields) == 0)
+			{	
+				show_error('Field information is required.');
+			}
+			
+			$sql = $this->_alter_table('ADD', $this->db->dbprefix.$table, $this->fields, $after_field);
+
+			$this->_reset();
+	
+			if ($this->db->query($sql) === FALSE)
+			{
+				return FALSE;
+			}
+		}
+		
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Column Drop
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	string	the column name
+	 * @return	bool
+	 */
+	function drop_column($table = '', $column_name = '')
+	{
+	
+		if ($table == '')
+		{
+			show_error('A table name is required for that operation.');
+		}
+
+		if ($column_name == '')
+		{
+			show_error('A column name is required for that operation.');
+		}
+
+		$sql = $this->_alter_table('DROP', $this->db->dbprefix.$table, $column_name);
+	
+		return $this->db->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Column Modify
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	string	the column name
+	 * @param	string	the column definition
+	 * @return	bool
+	 */
+	function modify_column($table = '', $field = array())
+	{
+		if ($table == '')
+		{
+			show_error('A table name is required for that operation.');
+		}
+
+		// add field info into field array, but we can only do one at a time
+		// so we cycle through
+
+		foreach ($field as $k => $v)
+		{
+			$this->add_field(array($k => $field[$k]));
+
+			if (count($this->fields) == 0)
+			{	
+				show_error('Field information is required.');
+			}
+		
+			$sql = $this->_alter_table('CHANGE', $this->db->dbprefix.$table, $this->fields);
+
+			$this->_reset();
+	
+			if ($this->db->query($sql) === FALSE)
+			{
+				return FALSE;
+			}
+		}
+		
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reset
+	 *
+	 * Resets table creation vars
+	 *
+	 * @access	private
+	 * @return	void
+	 */
+	function _reset()
+	{
+		$this->fields 		= array();
+		$this->keys			= array();
+		$this->primary_keys 	= array();
+	}
+
+}
+
+/* End of file DB_forge.php */
+/* Location: ./system/database/DB_forge.php */
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