use directly MOBIClass

inc/3rdparty/libraries/MOBIClass/FileObject.php

@@ -0,0 +1,168 @@
+<?php
+
+/**
+ * Description of FileObject
+ *
+ * @author Sander
+ */
+abstract class FileObject {
+	private $byteLength = -1;
+
+	public function __construct($byteLength = -1){
+		$this->byteLength = $byteLength;
+	}
+
+	public function getByteLength(){
+		if($this->byteLength >= 0){
+			return $this->byteLength;
+		}
+		return $this->getLength();
+	}
+
+	public function getLength(){
+		throw new Exception("Sub-class needs to implement this if it doesn't have a fixed length");
+	}
+
+	/**
+	 * Convert a string to byte format (maximum 4 bytes)
+	 * @param string $string Input string
+	 * @return int Output integer
+	 */
+	public function toInt($string){
+		$out = 0;
+		for($i = 0, $len = min(4, strlen($string)); $i < $len; $i++){
+			$out = $out | (ord($string[$i]) << (($len-$i-1)*8));
+		}
+		return $out;
+	}
+
+	/**
+	 * Convert a byte (stored in an integer) to a string
+	 * @param byte $int
+	 * @return string
+	 */
+	public function byteToString($int){
+		return $this->toString($int, 1);
+	}
+
+	/**
+	 * Convert a byte (stored in an integer) to a string
+	 * @param byte $int
+	 * @return string
+	 */
+	public function byteAsString($int){
+		return $this->asString($int, 1);
+	}
+
+	/**
+	 * Convert a short (stored in an integer) to a string
+	 * @param short $int
+	 * @return string
+	 */
+	public function shortToString($int){
+		return $this->toString($int, 2);
+	}
+
+	/**
+	 * Convert a short (stored in an integer) to a string
+	 * @param short $int
+	 * @return string
+	 */
+	public function shortAsString($int){
+		return $this->asString($int, 2);
+	}
+
+	/**
+	 * Convert a tri-byte (stored in an integer) to a string
+	 * @param tri-byte $int
+	 * @return string
+	 */
+	public function triToString($int){
+		return $this->toString($int, 3);
+	}
+
+	/**
+	 * Convert a tri-byte (stored in an integer) to a string
+	 * @param tri-byte $int
+	 * @return string
+	 */
+	public function triAsString($int){
+		return $this->asString($int, 3);
+	}
+
+	/**
+	 * Convert an integer to a string
+	 * @param int $int
+	 * @return string
+	 */
+	public function intToString($int){
+		return $this->toString($int, 4);
+	}
+
+	/**
+	 * Convert an integer to a string
+	 * @param int $int
+	 * @return string
+	 */
+	public function intAsString($int){
+		return $this->asString($int, 4);
+	}
+
+	/**
+	 * Convert a number of n bytes to a string
+	 * @param int $int Number that should be converted
+	 * @param int $size Number of bytes to convert
+	 * @return string Output string
+	 */
+	private function toString($int, $size){
+		$out = "";
+		for($i = 0; $i < $size; $i++){
+			$out = chr($int & 0xFF).$out;
+			$int = $int >> 8;
+		}
+		return $out;
+	}
+
+	/**
+	 * Convert a number of n bytes to a string
+	 * @param int $int Number that should be converted
+	 * @param int $size Number of bytes to convert
+	 * @return string Output string
+	 */
+	private function asString($int, $size){
+		$out = "";
+		for($i = 0; $i < $size; $i++){
+			if($i > 0) $out = " ".$out;
+			$byte = dechex($int & 0xFF);
+			if(strlen($byte) == 1) $byte = "0".$byte;
+			$out = $byte.$out;
+			$int = $int >> 8;
+		}
+		return $out;
+	}
+
+	/**
+	 * Get the value
+	 * @return mixed Value to get
+	 */
+    abstract public function get();
+
+	/**
+	 * Set the value
+	 * @return mixed Value to set
+	 */
+    abstract public function set($value);
+
+	/**
+	 * Serialize the object
+	 * @return string String representation
+	 */
+    abstract public function serialize();
+
+	/**
+	 * Unserialize the object
+	 * @param string $data String representation
+	 */
+    abstract public function unserialize($data);
+}
+?>