PMF class

src/PMF.php

@@ -0,0 +1,125 @@
+<?php
+
+/*
+
+           -
+         /   \
+      /         \
+   /   PocketMine  \
+/          MP         \
+|\     @shoghicp     /|
+|.   \           /   .|
+| ..     \   /     .. |
+|    ..    |    ..    |
+|       .. | ..       |
+\          |          /
+   \       |       /
+      \    |    /
+         \ | /
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+
+*/
+
+define("PMF_CURRENT_VERSION", 0x01);
+
+class PMF{
+	protected $fp;
+	private $file;
+	private $version;
+	private $type;
+	
+	public function __construct($file, $new = false, $type = 0, $version = PMF_CURRENT_VERSION){
+		if($new === true){
+			$this->create($file, $type, $version);
+		}else{
+			if($this->load($file) !== true){
+				$this->parse();
+			}
+		}
+	}
+	
+	public function getVersion(){
+		return $this->version;
+	}
+	
+	public function getType(){
+		return $this->type;
+	}
+	
+	private function load($file){
+		$this->close();
+		$this->file = realpath($file);
+		if(($this->fp = @fopen($file, "c+b")) !== false){
+			$stat = fstat($this->fp);
+			if($stat["size"] >= 5){ //Header + 2 Bytes
+				return true;
+			}
+			fclose($this->fp);
+		}
+		return false;
+	}
+	
+	public function parse(){
+		if(fread($this->fp, 3) !== "PMF"){
+			return false;			
+		}
+		$this->seek(0);
+		$this->version = ord($this->read(1));
+		switch($this->version){
+			case 0x01:
+				$this->type = ord($this->read(1));
+				break;
+			default:
+				console("[ERROR] Tried loading non-supported PMF version ".$this->version." on file ".$this->file);
+				return false;
+		}
+		return true;
+	}
+	
+	public function getFile(){
+		return $this->file;
+	}
+	
+	public function close(){
+		unset($this->version, $this->type, $this->file);
+		fclose($this->fp);
+	}
+	
+	public function create($file, $type, $version = PMF_CURRENT_VERSION){
+		$this->file = realpath($file);
+		if(!is_resource($this->fp)){		
+			if(($this->fp = @fopen($file, "c+b")) === false){
+				return false;
+			}
+		}
+		$this->seek(0);
+		$this->write("PMF" . chr((int) $type) . chr((int) $version));
+	}
+	
+	public function read($length){
+		if(is_resource($this->fp)){
+			return fread($this->fp, (int) $length);
+		}
+		return false;
+	}
+	
+	public function write($string, $length = false){
+		if(is_resource($this->fp)){
+			return ($length === false ? fwrite($this->fp, $string) : fwrite($this->fp, $string, $length));
+		}
+		return false;
+	}
+	
+	public function seek($offset, $whence = SEEK_SET){
+		if(is_resource($this->fp)){
+			return fseek($this->fp, (int) $offset, (int) $whence);
+		}
+		return false;
+	}
+
+}