From 051402b4c281cf125c9b369b682128aaefb587cd Mon Sep 17 00:00:00 2001
From: admin <devnull@localhost>
Date: Fri, 29 Sep 2006 23:11:40 +0000
Subject:

---
 system/database/drivers/mysql/mysql_utility.php | 170 ++++++++++++++++++++++++
 1 file changed, 170 insertions(+)

(limited to 'system')

diff --git a/system/database/drivers/mysql/mysql_utility.php b/system/database/drivers/mysql/mysql_utility.php
index a81936c56..65fb87f92 100644
--- a/system/database/drivers/mysql/mysql_utility.php
+++ b/system/database/drivers/mysql/mysql_utility.php
@@ -123,7 +123,177 @@ class CI_DB_mysql_utility extends CI_DB_utility {
 		return "REPAIR TABLE ".$this->db->_escape_table($table);
 	}
 
+	// --------------------------------------------------------------------
+
+	/**
+	 * MySQL Export
+	 *
+	 * @access	public
+	 * @param	object	The query result object
+	 * @param	array	Any preferences
+	 * @return	string
+	 */
+	function export($params = array())
+	{
+		// Set up our default preferences
+		$prefs = array(
+							'tables'		=> array(),
+							'ignore'		=> array(),
+							'format'		=> 'gzip',
+							'download'		=> TRUE,
+							'filename'		=> date('Y-m-d-H:i', time()),
+							'filepath'		=> '',
+							'add_drop'		=> TRUE,
+							'add_insert'	=> TRUE,
+							'newline'		=> "\n"
+						);
+
+		// Did the user submit any preference overrides? If so set them....
+		if (count($params) > 0)
+		{
+			foreach ($prefs as $key => $val)
+			{
+				if (isset($params[$key]))
+				{
+					$prefs[$key] = $params[$key];
+				}
+			}
+		}
+
+		// Extract the prefs for simplicity
+		extract($prefs);
+	
+		// Are we backing up a complete database or individual tables?	
+		if (count($tables) == 0)
+		{
+			$tables = $this->list_tables();
+		}
+	
+	
+	
+		// Start buffering the output
+		ob_start();
+	
+		// Build the output
+        foreach ($tables as $table)
+        { 
+        	// Is the table in the "ignore" list?
+			if (in_array($table, $ignore))
+			{
+        		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
+      
+            echo $newline.$newline.'#'.$newline.'# TABLE STRUCTURE FOR: '.$table.$newline.'#'.$newline.$newline;
+                
+ 			if ($add_drop == TRUE)
+ 			{
+            	echo 'DROP TABLE IF EXISTS '.$table.';'.$newline.$newline;
+			}
+			
+			$i = 0;
+			$result = $query->result_array();
+			foreach ($result[0] as $val)
+			{
+			    if ($i++ % 2)
+			    { 			    	
+			    	echo $val.';'.$newline.$newline;
+			    }
+			}
+			
+			// Build the insert statements
+			
+			if ($add_insert == FALSE)
+			{
+				continue;
+			}
+			
+			$query = $this->db->query("SELECT * FROM $table");
+			
+			if ($query->num_rows() == 0)
+			{
+				continue;
+			}
+		
+			// Grab 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;
+			$fields = '';
+			$is_int = array();
+			while ($field = mysql_fetch_field($query->result_id))
+			{
+				$is_int[$i] = (in_array(
+										mysql_field_type($query->result_id, $i), 
+										array('tinyint', 'smallint', 'mediumint', 'int', 'bigint', 'timestamp'), 
+										TRUE)
+										) ? TRUE : FALSE;
+										
+				// Create a string of field names
+				$fields .= $field->name.', ';     
+				$i++;
+			}
+					
+			$fields = preg_replace( "/, $/" , "" , $fields);
+			
+			
+			// Build the inserts
+			foreach ($query->result_array() as $row)
+			{
+				$values = '';
+			
+				$i = 0;
+				foreach ($row as $v)
+				{
+					$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 type
+					$values .= ($is_int[$i] == FALSE) ? $this->db->escape($v) : $v;
+					$values .= ', ';
+					
+					$i++;
+				}
+				
+				$values = preg_replace( "/, $/" , "" , $values);
+				
+				if ($download == FALSE)
+				{
+					$values = htmlspecialchars($values);
+				}
+				
+				// Build the INSERT string
+				echo 'INSERT INTO '.$table.' ('.$fields.') VALUES ('.$values.');'.$newline;
+	
+			}
+			
+			
+			
+			$buffer = ob_get_contents();
+			@ob_end_clean(); 
+			
+			echo $buffer;
+			
+		}
+
+	
+	}
 
 
 }
-- 
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