Rename 'kohana' to 'system' to conform to the Kohana filesystem layout. I'm comfortable with us not clearly drawing the distinction about the fact that it's Kohana.

1 files changed, 496 insertions, 0 deletions

diff --git a/system/libraries/drivers/Database/Mysql.php b/system/libraries/drivers/Database/Mysql.php
new file mode 100644
index 00000000..d5222f50
--- /dev/null
+++ b/system/libraries/drivers/Database/Mysql.php
@@ -0,0 +1,496 @@
+<?php defined('SYSPATH') OR die('No direct access allowed.');
+/**
+ * MySQL Database Driver
+ *
+ * $Id: Mysql.php 4344 2009-05-11 16:41:39Z zombor $
+ *
+ * @package    Core
+ * @author     Kohana Team
+ * @copyright  (c) 2007-2008 Kohana Team
+ * @license    http://kohanaphp.com/license.html
+ */
+class Database_Mysql_Driver extends Database_Driver {
+
+	/**
+	 * Database connection link
+	 */
+	protected $link;
+
+	/**
+	 * Database configuration
+	 */
+	protected $db_config;
+
+	/**
+	 * Sets the config for the class.
+	 *
+	 * @param  array  database configuration
+	 */
+	public function __construct($config)
+	{
+		$this->db_config = $config;
+
+		Kohana::log('debug', 'MySQL Database Driver Initialized');
+	}
+
+	/**
+	 * Closes the database connection.
+	 */
+	public function __destruct()
+	{
+		is_resource($this->link) and mysql_close($this->link);
+	}
+
+	public function connect()
+	{
+		// Check if link already exists
+		if (is_resource($this->link))
+			return $this->link;
+
+		// Import the connect variables
+		extract($this->db_config['connection']);
+
+		// Persistent connections enabled?
+		$connect = ($this->db_config['persistent'] == TRUE) ? 'mysql_pconnect' : 'mysql_connect';
+
+		// Build the connection info
+		$host = isset($host) ? $host : $socket;
+		$port = isset($port) ? ':'.$port : '';
+
+		// Make the connection and select the database
+		if (($this->link = $connect($host.$port, $user, $pass, TRUE)) AND mysql_select_db($database, $this->link))
+		{
+			if ($charset = $this->db_config['character_set'])
+			{
+				$this->set_charset($charset);
+			}
+
+			// Clear password after successful connect
+			$this->db_config['connection']['pass'] = NULL;
+
+			return $this->link;
+		}
+
+		return FALSE;
+	}
+
+	public function query($sql)
+	{
+		// Only cache if it's turned on, and only cache if it's not a write statement
+		if ($this->db_config['cache'] AND ! preg_match('#\b(?:INSERT|UPDATE|REPLACE|SET|DELETE|TRUNCATE)\b#i', $sql))
+		{
+			$hash = $this->query_hash($sql);
+
+			if ( ! isset($this->query_cache[$hash]))
+			{
+				// Set the cached object
+				$this->query_cache[$hash] = new Mysql_Result(mysql_query($sql, $this->link), $this->link, $this->db_config['object'], $sql);
+			}
+			else
+			{
+				// Rewind cached result
+				$this->query_cache[$hash]->rewind();
+			}
+
+			// Return the cached query
+			return $this->query_cache[$hash];
+		}
+
+		return new Mysql_Result(mysql_query($sql, $this->link), $this->link, $this->db_config['object'], $sql);
+	}
+
+	public function set_charset($charset)
+	{
+		$this->query('SET NAMES '.$this->escape_str($charset));
+	}
+
+	public function escape_table($table)
+	{
+		if (!$this->db_config['escape'])
+			return $table;
+
+		if (stripos($table, ' AS ') !== FALSE)
+		{
+			// Force 'AS' to uppercase
+			$table = str_ireplace(' AS ', ' AS ', $table);
+
+			// Runs escape_table on both sides of an AS statement
+			$table = array_map(array($this, __FUNCTION__), explode(' AS ', $table));
+
+			// Re-create the AS statement
+			return implode(' AS ', $table);
+		}
+		return '`'.str_replace('.', '`.`', $table).'`';
+	}
+
+	public function escape_column($column)
+	{
+		if (!$this->db_config['escape'])
+			return $column;
+
+		if ($column == '*')
+			return $column;
+
+		// This matches any functions we support to SELECT.
+		if ( preg_match('/(avg|count|sum|max|min)\(\s*(.*)\s*\)(\s*as\s*(.+)?)?/i', $column, $matches))
+		{
+			if ( count($matches) == 3)
+			{
+				return $matches[1].'('.$this->escape_column($matches[2]).')';
+			}
+			else if ( count($matches) == 5)
+			{
+				return $matches[1].'('.$this->escape_column($matches[2]).') AS '.$this->escape_column($matches[2]);
+			}
+		}
+		
+		// This matches any modifiers we support to SELECT.
+		if ( ! preg_match('/\b(?:rand|all|distinct(?:row)?|high_priority|sql_(?:small_result|b(?:ig_result|uffer_result)|no_cache|ca(?:che|lc_found_rows)))\s/i', $column))
+		{
+			if (stripos($column, ' AS ') !== FALSE)
+			{
+				// Force 'AS' to uppercase
+				$column = str_ireplace(' AS ', ' AS ', $column);
+
+				// Runs escape_column on both sides of an AS statement
+				$column = array_map(array($this, __FUNCTION__), explode(' AS ', $column));
+
+				// Re-create the AS statement
+				return implode(' AS ', $column);
+			}
+
+			return preg_replace('/[^.*]+/', '`$0`', $column);
+		}
+
+		$parts = explode(' ', $column);
+		$column = '';
+
+		for ($i = 0, $c = count($parts); $i < $c; $i++)
+		{
+			// The column is always last
+			if ($i == ($c - 1))
+			{
+				$column .= preg_replace('/[^.*]+/', '`$0`', $parts[$i]);
+			}
+			else // otherwise, it's a modifier
+			{
+				$column .= $parts[$i].' ';
+			}
+		}
+		return $column;
+	}
+
+	public function regex($field, $match, $type, $num_regexs)
+	{
+		$prefix = ($num_regexs == 0) ? '' : $type;
+
+		return $prefix.' '.$this->escape_column($field).' REGEXP \''.$this->escape_str($match).'\'';
+	}
+
+	public function notregex($field, $match, $type, $num_regexs)
+	{
+		$prefix = $num_regexs == 0 ? '' : $type;
+
+		return $prefix.' '.$this->escape_column($field).' NOT REGEXP \''.$this->escape_str($match) . '\'';
+	}
+
+	public function merge($table, $keys, $values)
+	{
+		// Escape the column names
+		foreach ($keys as $key => $value)
+		{
+			$keys[$key] = $this->escape_column($value);
+		}
+		return 'REPLACE INTO '.$this->escape_table($table).' ('.implode(', ', $keys).') VALUES ('.implode(', ', $values).')';
+	}
+
+	public function limit($limit, $offset = 0)
+	{
+		return 'LIMIT '.$offset.', '.$limit;
+	}
+
+	public function compile_select($database)
+	{
+		$sql = ($database['distinct'] == TRUE) ? 'SELECT DISTINCT ' : 'SELECT ';
+		$sql .= (count($database['select']) > 0) ? implode(', ', $database['select']) : '*';
+
+		if (count($database['from']) > 0)
+		{
+			// Escape the tables
+			$froms = array();
+			foreach ($database['from'] as $from)
+			{
+				$froms[] = $this->escape_column($from);
+			}
+			$sql .= "\nFROM (";
+			$sql .= implode(', ', $froms).")";
+		}
+
+		if (count($database['join']) > 0)
+		{
+			foreach($database['join'] AS $join)
+			{
+				$sql .= "\n".$join['type'].'JOIN '.implode(', ', $join['tables']).' ON '.$join['conditions'];
+			}
+		}
+
+		if (count($database['where']) > 0)
+		{
+			$sql .= "\nWHERE ";
+		}
+
+		$sql .= implode("\n", $database['where']);
+
+		if (count($database['groupby']) > 0)
+		{
+			$sql .= "\nGROUP BY ";
+			$sql .= implode(', ', $database['groupby']);
+		}
+
+		if (count($database['having']) > 0)
+		{
+			$sql .= "\nHAVING ";
+			$sql .= implode("\n", $database['having']);
+		}
+
+		if (count($database['orderby']) > 0)
+		{
+			$sql .= "\nORDER BY ";
+			$sql .= implode(', ', $database['orderby']);
+		}
+
+		if (is_numeric($database['limit']))
+		{
+			$sql .= "\n";
+			$sql .= $this->limit($database['limit'], $database['offset']);
+		}
+
+		return $sql;
+	}
+
+	public function escape_str($str)
+	{
+		if (!$this->db_config['escape'])
+			return $str;
+
+		is_resource($this->link) or $this->connect();
+
+		return mysql_real_escape_string($str, $this->link);
+	}
+
+	public function list_tables()
+	{
+		$tables = array();
+
+		if ($query = $this->query('SHOW TABLES FROM '.$this->escape_table($this->db_config['connection']['database'])))
+		{
+			foreach ($query->result(FALSE) as $row)
+			{
+				$tables[] = current($row);
+			}
+		}
+
+		return $tables;
+	}
+
+	public function show_error()
+	{
+		return mysql_error($this->link);
+	}
+
+	public function list_fields($table)
+	{
+		$result = NULL;
+
+		foreach ($this->field_data($table) as $row)
+		{
+			// Make an associative array
+			$result[$row->Field] = $this->sql_type($row->Type);
+
+			if ($row->Key === 'PRI' AND $row->Extra === 'auto_increment')
+			{
+				// For sequenced (AUTO_INCREMENT) tables
+				$result[$row->Field]['sequenced'] = TRUE;
+			}
+
+			if ($row->Null === 'YES')
+			{
+				// Set NULL status
+				$result[$row->Field]['null'] = TRUE;
+			}
+		}
+
+		if (!isset($result))
+			throw new Kohana_Database_Exception('database.table_not_found', $table);
+
+		return $result;
+	}
+
+	public function field_data($table)
+	{
+		$result = $this->query('SHOW COLUMNS FROM '.$this->escape_table($table));
+
+		return $result->result_array(TRUE);
+	}
+
+} // End Database_Mysql_Driver Class
+
+/**
+ * MySQL Result
+ */
+class Mysql_Result extends Database_Result {
+
+	// Fetch function and return type
+	protected $fetch_type  = 'mysql_fetch_object';
+	protected $return_type = MYSQL_ASSOC;
+
+	/**
+	 * Sets up the result variables.
+	 *
+	 * @param  resource  query result
+	 * @param  resource  database link
+	 * @param  boolean   return objects or arrays
+	 * @param  string    SQL query that was run
+	 */
+	public function __construct($result, $link, $object = TRUE, $sql)
+	{
+		$this->result = $result;
+
+		// If the query is a resource, it was a SELECT, SHOW, DESCRIBE, EXPLAIN query
+		if (is_resource($result))
+		{
+			$this->current_row = 0;
+			$this->total_rows  = mysql_num_rows($this->result);
+			$this->fetch_type = ($object === TRUE) ? 'mysql_fetch_object' : 'mysql_fetch_array';
+		}
+		elseif (is_bool($result))
+		{
+			if ($result == FALSE)
+			{
+				// SQL error
+				throw new Kohana_Database_Exception('database.error', mysql_error($link).' - '.$sql);
+			}
+			else
+			{
+				// Its an DELETE, INSERT, REPLACE, or UPDATE query
+				$this->insert_id  = mysql_insert_id($link);
+				$this->total_rows = mysql_affected_rows($link);
+			}
+		}
+
+		// Set result type
+		$this->result($object);
+
+		// Store the SQL
+		$this->sql = $sql;
+	}
+
+	/**
+	 * Destruct, the cleanup crew!
+	 */
+	public function __destruct()
+	{
+		if (is_resource($this->result))
+		{
+			mysql_free_result($this->result);
+		}
+	}
+
+	public function result($object = TRUE, $type = MYSQL_ASSOC)
+	{
+		$this->fetch_type = ((bool) $object) ? 'mysql_fetch_object' : 'mysql_fetch_array';
+
+		// This check has to be outside the previous statement, because we do not
+		// know the state of fetch_type when $object = NULL
+		// NOTE - The class set by $type must be defined before fetching the result,
+		// autoloading is disabled to save a lot of stupid overhead.
+		if ($this->fetch_type == 'mysql_fetch_object' AND $object === TRUE)
+		{
+			$this->return_type = (is_string($type) AND Kohana::auto_load($type)) ? $type : 'stdClass';
+		}
+		else
+		{
+			$this->return_type = $type;
+		}
+
+		return $this;
+	}
+
+	public function as_array($object = NULL, $type = MYSQL_ASSOC)
+	{
+		return $this->result_array($object, $type);
+	}
+
+	public function result_array($object = NULL, $type = MYSQL_ASSOC)
+	{
+		$rows = array();
+
+		if (is_string($object))
+		{
+			$fetch = $object;
+		}
+		elseif (is_bool($object))
+		{
+			if ($object === TRUE)
+			{
+				$fetch = 'mysql_fetch_object';
+
+				$type = (is_string($type) AND Kohana::auto_load($type)) ? $type : 'stdClass';
+			}
+			else
+			{
+				$fetch = 'mysql_fetch_array';
+			}
+		}
+		else
+		{
+			// Use the default config values
+			$fetch = $this->fetch_type;
+
+			if ($fetch == 'mysql_fetch_object')
+			{
+				$type = (is_string($this->return_type) AND Kohana::auto_load($this->return_type)) ? $this->return_type : 'stdClass';
+			}
+		}
+
+		if (mysql_num_rows($this->result))
+		{
+			// Reset the pointer location to make sure things work properly
+			mysql_data_seek($this->result, 0);
+
+			while ($row = $fetch($this->result, $type))
+			{
+				$rows[] = $row;
+			}
+		}
+
+		return isset($rows) ? $rows : array();
+	}
+
+	public function list_fields()
+	{
+		$field_names = array();
+		while ($field = mysql_fetch_field($this->result))
+		{
+			$field_names[] = $field->name;
+		}
+
+		return $field_names;
+	}
+
+	public function seek($offset)
+	{
+		if ($this->offsetExists($offset) AND mysql_data_seek($this->result, $offset))
+		{
+			// Set the current row to the offset
+			$this->current_row = $offset;
+
+			return TRUE;
+		}
+		else
+		{
+			return FALSE;
+		}
+	}
+
+} // End Mysql_Result Class