From 11c75eab4d04b9c88b0096015fb3c0711555bf9a Mon Sep 17 00:00:00 2001
From: Derek Allard <derek.allard@ellislab.com>
Date: Tue, 29 Jan 2008 19:35:31 +0000
Subject: Removed support for db_backup in MySQLi due to incompatible
 functions.

---
 system/database/drivers/mysqli/mysqli_utility.php | 138 +---------------------
 1 file changed, 3 insertions(+), 135 deletions(-)

(limited to 'system/database/drivers')

diff --git a/system/database/drivers/mysqli/mysqli_utility.php b/system/database/drivers/mysqli/mysqli_utility.php
index bb1f6f917..4ab2bb1d1 100644
--- a/system/database/drivers/mysqli/mysqli_utility.php
+++ b/system/database/drivers/mysqli/mysqli_utility.php
@@ -78,143 +78,11 @@ class CI_DB_mysqli_utility extends CI_DB_utility {
 	 */
 	function _backup($params = array())
 	{
-		if (count($params) == 0)
-		{
-			return FALSE;
-		}
-
-		// Extract the prefs for simplicity
-		extract($params);
-	
-		// Build the output
-		$output = '';
-		foreach ((array)$tables as $table)
-		{
-			// Is the table in the "ignore" list?
-			if (in_array($table, (array)$ignore, TRUE))
-			{
-				continue;
-			}
-
-			// Get the table schema
-			$query = $this->db->query("SHOW CREATE TABLE `".$this->db->database.'`.'.$table);
-			
-			// No result means the table name was invalid
-			if ($query === FALSE)
-			{
-				continue;
-			}
-			
-			// Write out the table schema
-			$output .= '#'.$newline.'# TABLE STRUCTURE FOR: '.$table.$newline.'#'.$newline.$newline;
-
- 			if ($add_drop == TRUE)
- 			{
-				$output .= 'DROP TABLE IF EXISTS '.$table.';'.$newline.$newline;
-			}
-			
-			$i = 0;
-			$result = $query->result_array();
-			foreach ($result[0] as $val)
-			{
-				if ($i++ % 2)
-				{ 					
-					$output .= $val.';'.$newline.$newline;
-				}
-			}
-			
-			// If inserts are not needed we're done...
-			if ($add_insert == FALSE)
-			{
-				continue;
-			}
-
-			// Grab all the data from the current table
-			$query = $this->db->query("SELECT * FROM $table");
-			
-			if ($query->num_rows() == 0)
-			{
-				continue;
-			}
-		
-			// Fetch the field names and determine if the field is an
-			// integer type.  We use this info to decide whether to
-			// surround the data with quotes or not
-			
-			$i = 0;
-			$field_str = '';
-			$is_int = array();
-			while ($field = mysqli_fetch_field($query->result_id))
-			{
-				// Most versions of MySQL store timestamp as a string
-				$is_int[$i] = (in_array(
-										strtolower(mysql_field_type($query->result_id, $i)),
-										array('tinyint', 'smallint', 'mediumint', 'int', 'bigint'), // 'timestamp'),
-										TRUE)
-										) ? TRUE : FALSE;
-										
-				// Create a string of field names
-				$field_str .= $field->name.', ';
-				$i++;
-			}
-			
-			// Trim off the end comma
-			$field_str = preg_replace( "/, $/" , "" , $field_str);
-			
-			
-			// Build the insert string
-			foreach ($query->result_array() as $row)
-			{
-				$val_str = '';
-			
-				$i = 0;
-				foreach ($row as $v)
-				{
-					// Is the value NULL?
-					if ($v === NULL)
-					{
-						$val_str .= 'NULL';
-					}
-					else
-					{
-						// Do a little formatting...
-						$v = str_replace(array("\x00", "\x0a", "\x0d", "\x1a"), array('\0', '\n', '\r', '\Z'), $v);
-						$v = str_replace(array("\n", "\r", "\t"), array('\n', '\r', '\t'), $v);
-						$v = str_replace('\\', '\\\\',	$v);
-						$v = str_replace('\'', '\\\'',	$v);
-						$v = str_replace('\\\n', '\n',	$v);
-						$v = str_replace('\\\r', '\r',	$v);
-						$v = str_replace('\\\t', '\t',	$v);
-
-						// Escape the data if it's not an integer
-						if ($is_int[$i] == FALSE)
-						{
-							$val_str .= $this->db->escape($v);
-						}
-						else
-						{
-							$val_str .= $v;
-						}					
-					}				
-					
-					// Append a comma
-					$val_str .= ', ';
-					$i++;
-				}
-				
-				// Remove the comma at the end of the string
-				$val_str = preg_replace( "/, $/" , "" , $val_str);
-								
-				// Build the INSERT string
-				$output .= 'INSERT INTO '.$table.' ('.$field_str.') VALUES ('.$val_str.');'.$newline;
-			}
-			
-			$output .= $newline.$newline;
-		}
-
-		return $output;
+		// Currently unsupported
+		return $this->db->display_error('db_unsuported_feature');
 	}
 
+
 	/**
 	 *
 	 * The functions below have been deprecated as of 1.6, and are only here for backwards
-- 
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