X-Git-Url: https://scripts.mit.edu/gitweb/autoinstallsdev/mediawiki.git/blobdiff_plain/19e297c21b10b1b8a3acad5e73fc71dcb35db44a..6932310fd58ebef145fa01eb76edf7150284d8ea:/vendor/james-heinrich/getid3/getid3/extension.cache.mysqli.php

diff --git a/vendor/james-heinrich/getid3/getid3/extension.cache.mysqli.php b/vendor/james-heinrich/getid3/getid3/extension.cache.mysqli.php
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@@ -0,0 +1,183 @@
+<?php
+/////////////////////////////////////////////////////////////////
+/// getID3() by James Heinrich <info@getid3.org>               //
+//  available at http://getid3.sourceforge.net                 //
+//            or http://www.getid3.org                         //
+//          also https://github.com/JamesHeinrich/getID3       //
+/////////////////////////////////////////////////////////////////
+//                                                             //
+// extension.cache.mysqli.php - part of getID3()                //
+// Please see readme.txt for more information                  //
+//                                                            ///
+/////////////////////////////////////////////////////////////////
+//                                                             //
+// This extension written by Allan Hansen <ahØartemis*dk>      //
+// Table name mod by Carlo Capocasa <calroØcarlocapocasa*com>  //
+//                                                            ///
+/////////////////////////////////////////////////////////////////
+
+
+/**
+* This is a caching extension for getID3(). It works the exact same
+* way as the getID3 class, but return cached information very fast
+*
+* Example:  (see also demo.cache.mysql.php in /demo/)
+*
+*    Normal getID3 usage (example):
+*
+*       require_once 'getid3/getid3.php';
+*       $getID3 = new getID3;
+*       $getID3->encoding = 'UTF-8';
+*       $info1 = $getID3->analyze('file1.flac');
+*       $info2 = $getID3->analyze('file2.wv');
+*
+*    getID3_cached usage:
+*
+*       require_once 'getid3/getid3.php';
+*       require_once 'getid3/getid3/extension.cache.mysqli.php';
+*       // 5th parameter (tablename) is optional, default is 'getid3_cache'
+*       $getID3 = new getID3_cached_mysqli('localhost', 'database', 'username', 'password', 'tablename');
+*       $getID3->encoding = 'UTF-8';
+*       $info1 = $getID3->analyze('file1.flac');
+*       $info2 = $getID3->analyze('file2.wv');
+*
+*
+* Supported Cache Types    (this extension)
+*
+*   SQL Databases:
+*
+*   cache_type          cache_options
+*   -------------------------------------------------------------------
+*   mysqli              host, database, username, password
+*
+*
+*   DBM-Style Databases:    (use extension.cache.dbm)
+*
+*   cache_type          cache_options
+*   -------------------------------------------------------------------
+*   gdbm                dbm_filename, lock_filename
+*   ndbm                dbm_filename, lock_filename
+*   db2                 dbm_filename, lock_filename
+*   db3                 dbm_filename, lock_filename
+*   db4                 dbm_filename, lock_filename  (PHP5 required)
+*
+*   PHP must have write access to both dbm_filename and lock_filename.
+*
+*
+* Recommended Cache Types
+*
+*   Infrequent updates, many reads      any DBM
+*   Frequent updates                    mysqli
+*/
+
+class getID3_cached_mysqli extends getID3
+{
+	// private vars
+	private $mysqli;
+	private $cursor;
+
+
+	// public: constructor - see top of this file for cache type and cache_options
+	public function __construct($host, $database, $username, $password, $table='getid3_cache') {
+
+		// Check for mysqli support
+		if (!function_exists('mysqli_connect')) {
+			throw new Exception('PHP not compiled with mysqli support.');
+		}
+
+		// Connect to database
+		$this->mysqli = new mysqli($host, $username, $password);
+		if (!$this->mysqli) {
+			throw new Exception('mysqli_connect() failed - check permissions and spelling.');
+		}
+
+		// Select database
+		if (!$this->mysqli->select_db($database)) {
+			throw new Exception('Cannot use database '.$database);
+		}
+
+		// Set table
+		$this->table = $table;
+
+		// Create cache table if not exists
+		$this->create_table();
+
+		// Check version number and clear cache if changed
+		$version = '';
+		$SQLquery  = 'SELECT `value`';
+		$SQLquery .= ' FROM `'.$this->mysqli->real_escape_string($this->table).'`';
+		$SQLquery .= ' WHERE (`filename` = \''.$this->mysqli->real_escape_string(getID3::VERSION).'\')';
+		$SQLquery .= ' AND (`filesize` = -1)';
+		$SQLquery .= ' AND (`filetime` = -1)';
+		$SQLquery .= ' AND (`analyzetime` = -1)';
+		if ($this->cursor = $this->mysqli->query($SQLquery)) {
+			list($version) = $this->cursor->fetch_array();
+		}
+		if ($version != getID3::VERSION) {
+			$this->clear_cache();
+		}
+
+		parent::__construct();
+	}
+
+
+	// public: clear cache
+	public function clear_cache() {
+		$this->mysqli->query('DELETE FROM `'.$this->mysqli->real_escape_string($this->table).'`');
+		$this->mysqli->query('INSERT INTO `'.$this->mysqli->real_escape_string($this->table).'` (`filename`, `filesize`, `filetime`, `analyzetime`, `value`) VALUES (\''.getID3::VERSION.'\', -1, -1, -1, \''.getID3::VERSION.'\')');
+	}
+
+
+	// public: analyze file
+	public function analyze($filename, $filesize=null, $original_filename='') {
+
+		if (file_exists($filename)) {
+
+			// Short-hands
+			$filetime = filemtime($filename);
+			$filesize =  filesize($filename);
+
+			// Lookup file
+			$SQLquery  = 'SELECT `value`';
+			$SQLquery .= ' FROM `'.$this->mysqli->real_escape_string($this->table).'`';
+			$SQLquery .= ' WHERE (`filename` = \''.$this->mysqli->real_escape_string($filename).'\')';
+			$SQLquery .= '   AND (`filesize` = \''.$this->mysqli->real_escape_string($filesize).'\')';
+			$SQLquery .= '   AND (`filetime` = \''.$this->mysqli->real_escape_string($filetime).'\')';
+			$this->cursor = $this->mysqli->query($SQLquery);
+			if ($this->cursor->num_rows > 0) {
+				// Hit
+				list($result) = $this->cursor->fetch_array();
+				return unserialize(base64_decode($result));
+			}
+		}
+
+		// Miss
+		$analysis = parent::analyze($filename, $filesize, $original_filename);
+
+		// Save result
+		if (file_exists($filename)) {
+			$SQLquery  = 'INSERT INTO `'.$this->mysqli->real_escape_string($this->table).'` (`filename`, `filesize`, `filetime`, `analyzetime`, `value`) VALUES (';
+			$SQLquery .=   '\''.$this->mysqli->real_escape_string($filename).'\'';
+			$SQLquery .= ', \''.$this->mysqli->real_escape_string($filesize).'\'';
+			$SQLquery .= ', \''.$this->mysqli->real_escape_string($filetime).'\'';
+			$SQLquery .= ', \''.$this->mysqli->real_escape_string(time()   ).'\'';
+			$SQLquery .= ', \''.$this->mysqli->real_escape_string(base64_encode(serialize($analysis))).'\')';
+			$this->cursor = $this->mysqli->query($SQLquery);
+		}
+		return $analysis;
+	}
+
+
+	// private: (re)create mysqli table
+	private function create_table($drop=false) {
+		$SQLquery  = 'CREATE TABLE IF NOT EXISTS `'.$this->mysqli->real_escape_string($this->table).'` (';
+		$SQLquery .=   '`filename` VARCHAR(990) NOT NULL DEFAULT \'\'';
+		$SQLquery .= ', `filesize` INT(11) NOT NULL DEFAULT \'0\'';
+		$SQLquery .= ', `filetime` INT(11) NOT NULL DEFAULT \'0\'';
+		$SQLquery .= ', `analyzetime` INT(11) NOT NULL DEFAULT \'0\'';
+		$SQLquery .= ', `value` LONGTEXT NOT NULL';
+		$SQLquery .= ', PRIMARY KEY (`filename`, `filesize`, `filetime`)) ENGINE=MyISAM CHARACTER SET=latin1 COLLATE=latin1_general_ci';
+		$this->cursor = $this->mysqli->query($SQLquery);
+		echo $this->mysqli->error;
+	}
+}
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