attachment.class.php
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	<?php

	/**
	* Model of an Attachment
	*/
	class MimeMailParser_attachment {

	/**
	* @var $filename Filename
	*/
	public $filename;
	/**
	* @var $content_type Mime Type
	*/
	public $content_type;
	/**
	* @var $content File Content
	*/
	private $content;
	/**
	* @var $extension Filename extension
	*/
	private $extension;
	/**
	* @var $content_disposition Content-Disposition (attachment or inline)
	*/
	public $content_disposition;
	/**
	* @var $headers An Array of the attachment headers
	*/
	public $headers;

	private $stream;

	public function __construct($filename, $content_type, $stream, $content_disposition = 'attachment', $headers = array()) {
	$this->filename = $filename;
	$this->content_type = $content_type;
	$this->stream = $stream;
	$this->content = null;
	$this->content_disposition = $content_disposition;
	$this->headers = $headers;
	}

	/**
	* retrieve the attachment filename
	* @return String
	*/
	public function getFilename() {
	return $this->filename;
	}

	/**
	* Retrieve the Attachment Content-Type
	* @return String
	*/
	public function getContentType() {
	return $this->content_type;
	}

	/**
	* Retrieve the Attachment Content-Disposition
	* @return String
	*/
	public function getContentDisposition() {
	return $this->content_disposition;
	}

	/**
	* Retrieve the Attachment Headers
	* @return String
	*/
	public function getHeaders() {
	return $this->headers;
	}

	/**
	* Retrieve the file extension
	* @return String
	*/
	public function getFileExtension() {
	if (!$this->extension) {
	$ext = substr(strrchr($this->filename, '.'), 1);
	if ($ext == 'gz') {
	// special case, tar.gz
	// todo: other special cases?
	$ext = preg_match("/\.tar\.gz$/i", $ext) ? 'tar.gz' : 'gz';
	}
	$this->extension = $ext;
	}
	return $this->extension;
	}

	/**
	* Read the contents a few bytes at a time until completed
	* Once read to completion, it always returns false
	* @return String
	* @param $bytes Int[optional]
	*/
	public function read($bytes = 2082) {
	return feof($this->stream) ? false : fread($this->stream, $bytes);
	}

	/**
	* Retrieve the file content in one go
	* Once you retreive the content you cannot use MimeMailParser_attachment::read()
	* @return String
	*/
	public function getContent() {
	if ($this->content === null) {
	fseek($this->stream, 0);
	while(($buf = $this->read()) !== false) {
	$this->content .= $buf;
	}
	}
	return $this->content;
	}

	/**
	* Allow the properties
	* MimeMailParser_attachment::$name,
	* MimeMailParser_attachment::$extension
	* to be retrieved as public properties
	* @param $name Object
	*/
	public function __get($name) {
	if ($name == 'content') {
	return $this->getContent();
	} else if ($name == 'extension') {
	return $this->getFileExtension();
	}
	return null;
	}

	}

	?>

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