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<?php
/**
* Zalo © 2019
*
*/
namespace Zalo\FileUpload;
use Zalo\Exceptions\ZaloSDKException;
/**
* Class ZaloFile
*
* @package Zalo
*/
class ZaloFile
{
/**
* @var string The path to the file on the system.
*/
protected $path;
/**
* @var int The maximum bytes to read. Defaults to -1 (read all the remaining buffer).
*/
private $maxLength;
/**
* @var int Seek to the specified offset before reading. If this number is negative, no seeking will occur and reading will start from the current position.
*/
private $offset;
/**
* @var resource The stream pointing to the file.
*/
protected $stream;
/**
* Creates a new ZaloFile entity.
*
* @param string $filePath
* @param int $maxLength
* @param int $offset
*
* @throws ZaloSDKException
*/
public function __construct($filePath, $maxLength = -1, $offset = -1)
{
$this->path = $filePath;
$this->maxLength = $maxLength;
$this->offset = $offset;
$this->open();
}
/**
* Closes the stream when destructed.
*/
public function __destruct()
{
$this->close();
}
/**
* Opens a stream for the file.
*
* @throws ZaloSDKException
*/
public function open()
{
if (!$this->isRemoteFile($this->path) && !is_readable($this->path)) {
throw new ZaloSDKException('Failed to create ZaloFile entity. Unable to read resource: ' . $this->path . '.');
}
$this->stream = fopen($this->path, 'r');
if (!$this->stream) {
throw new ZaloSDKException('Failed to create ZaloFile entity. Unable to open resource: ' . $this->path . '.');
}
}
/**
* Stops the file stream.
*/
public function close()
{
if (is_resource($this->stream)) {
fclose($this->stream);
}
}
/**
* Return the contents of the file.
*
* @return string
*/
public function getContents()
{
return stream_get_contents($this->stream, $this->maxLength, $this->offset);
}
/**
* Return the name of the file.
*
* @return string
*/
public function getFileName()
{
return basename($this->path);
}
/**
* Return the path of the file.
*
* @return string
*/
public function getFilePath()
{
return $this->path;
}
/**
* Return the size of the file.
*
* @return int
*/
public function getSize()
{
return filesize($this->path);
}
/**
* Return the mimetype of the file.
*
* @return string
*/
public function getMimetype()
{
return Mimetypes::getInstance()->fromFilename($this->path) ?: 'text/plain';
}
/**
* Returns true if the path to the file is remote.
*
* @param string $pathToFile
*
* @return boolean
*/
protected function isRemoteFile($pathToFile)
{
return preg_match('/^(https?|ftp):\/\/.*/', $pathToFile) === 1;
}
}