/
File.php
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/
File.php
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<?php
namespace Flow;
class File
{
/**
* @var RequestInterface
*/
private $request;
/**
* @var ConfigInterface
*/
private $config;
/**
* File hashed unique identifier
*
* @var string
*/
private $identifier;
/**
* Constructor
*
* @param ConfigInterface $config
* @param RequestInterface $request
*/
public function __construct(ConfigInterface $config, RequestInterface $request = null)
{
$this->config = $config;
if ($request === null) {
$request = new Request();
}
$this->request = $request;
$this->identifier = call_user_func($this->config->getHashNameCallback(), $request);
}
/**
* Get file identifier
*
* @return string
*/
public function getIdentifier()
{
return $this->identifier;
}
/**
* Return chunk path
*
* @param int $index
*
* @return string
*/
public function getChunkPath($index)
{
return $this->config->getTempDir().DIRECTORY_SEPARATOR.$this->identifier.'_'.$index;
}
/**
* Check if chunk exist
*
* @return bool
*/
public function checkChunk()
{
return file_exists($this->getChunkPath($this->request->getCurrentChunkNumber()));
}
/**
* Validate file request
*
* @return bool
*/
public function validateChunk()
{
$file = $this->request->getFile();
if (!$file) {
return false;
}
if (!isset($file['tmp_name']) || !isset($file['size']) || !isset($file['error'])) {
return false;
}
if ($this->request->getCurrentChunkSize() != $file['size']) {
return false;
}
if ($file['error'] !== UPLOAD_ERR_OK) {
return false;
}
return true;
}
/**
* Save chunk
*
* @return bool
*/
public function saveChunk()
{
$file = $this->request->getFile();
return $this->_move_uploaded_file($file['tmp_name'], $this->getChunkPath($this->request->getCurrentChunkNumber()));
}
/**
* Check if file upload is complete
*
* @return bool
*/
public function validateFile()
{
$totalChunks = $this->request->getTotalChunks();
$totalChunksSize = 0;
for ($i = 1; $i <= $totalChunks; $i++) {
$file = $this->getChunkPath($i);
if (!file_exists($file)) {
return false;
}
$totalChunksSize += filesize($file);
}
return $this->request->getTotalSize() == $totalChunksSize;
}
/**
* Merge all chunks to single file
*
* @param string $destination final file location
*
*
* @throws FileLockException
* @throws FileOpenException
* @throws \Exception
*
* @return bool indicates if file was saved
*/
public function save($destination)
{
$fh = fopen($destination, 'wb');
if (!$fh) {
throw new FileOpenException('failed to open destination file: '.$destination);
}
if (!flock($fh, LOCK_EX | LOCK_NB, $blocked)) {
// @codeCoverageIgnoreStart
if ($blocked) {
// Concurrent request has requested a lock.
// File is being processed at the moment.
// Warning: lock is not checked in windows.
return false;
}
// @codeCoverageIgnoreEnd
throw new FileLockException('failed to lock file: '.$destination);
}
$totalChunks = $this->request->getTotalChunks();
try {
$preProcessChunk = $this->config->getPreprocessCallback();
for ($i = 1; $i <= $totalChunks; $i++) {
$file = $this->getChunkPath($i);
$chunk = fopen($file, "rb");
if (!$chunk) {
throw new FileOpenException('failed to open chunk: '.$file);
}
if ($preProcessChunk !== null) {
call_user_func($preProcessChunk, $chunk);
}
stream_copy_to_stream($chunk, $fh);
fclose($chunk);
}
} catch (\Exception $e) {
flock($fh, LOCK_UN);
fclose($fh);
throw $e;
}
if ($this->config->getDeleteChunksOnSave()) {
$this->deleteChunks();
}
flock($fh, LOCK_UN);
fclose($fh);
return true;
}
/**
* Delete chunks dir
*/
public function deleteChunks()
{
$totalChunks = $this->request->getTotalChunks();
for ($i = 1; $i <= $totalChunks; $i++) {
$path = $this->getChunkPath($i);
if (file_exists($path)) {
unlink($path);
}
}
}
/**
* This method is used only for testing
*
* @private
* @codeCoverageIgnore
*
* @param string $filePath
* @param string $destinationPath
*
* @return bool
*/
public function _move_uploaded_file($filePath, $destinationPath)
{
return move_uploaded_file($filePath, $destinationPath);
}
}