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<?php
/**
* escpos-php, a Thermal receipt printer library, for use with
* ESC/POS compatible printers.
*
* Copyright (c) 2014-2015 Michael Billington <michael.billington@gmail.com>,
* incorporating modifications by:
* - Roni Saha <roni.cse@gmail.com>
* - Gergely Radics <gerifield@ustream.tv>
* - Warren Doyle <w.doyle@fuelled.co>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* PrintConnector for passing print data to a file.
*/
class FilePrintConnector implements PrintConnector {
/**
* @var resource The file pointer to send data to.
*/
protected $fp;
/**
* Construct new connector, given a filename
*
* @param string $filename
*/
public function __construct($filename) {
$this -> fp = fopen($filename, "wb+");
if($this -> fp === false) {
throw new Exception("Cannot initialise FilePrintConnector.");
}
}
public function __destruct() {
if($this -> fp !== false) {
trigger_error("Print connector was not finalized. Did you forget to close the printer?", E_USER_NOTICE);
}
}
/**
* Close file pointer
*/
public function finalize() {
fclose($this -> fp);
$this -> fp = false;
}
/* (non-PHPdoc)
* @see PrintConnector::read()
*/
public function read($len) {
rewind($this -> fp);
return fgets($this -> fp, $len + 1);
}
/**
* Write data to the file
*
* @param string $data
*/
public function write($data) {
fwrite($this -> fp, $data);
}
}