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File / Folder	Size	Action
.	-
AwsS3V3Adapter.php	4.154KB	edt ren
Filesystem.php	19.471KB	edt ren
FilesystemAdapter.php	25.326KB	edt ren
FilesystemManager.php	11.4KB	edt ren
FilesystemServiceProvid...	1.705KB	edt ren
LICENSE.md	1.05KB	edt ren
LockableFile.php	3.517KB	edt ren
composer.json	1.876KB	edt ren
functions.php	0.599KB	edt ren

<?php

namespace Illuminate\Filesystem;

use Illuminate\Contracts\Filesystem\LockTimeoutException;

class LockableFile
{
    /**
     * The file resource.
     *
     * @var resource
     */
    protected $handle;

/**
     * The file path.
     *
     * @var string
     */
    protected $path;

/**
     * Indicates if the file is locked.
     *
     * @var bool
     */
    protected $isLocked = false;

/**
     * Create a new File instance.
     *
     * @param  string  $path
     * @param  string  $mode
     * @return void
     */
    public function __construct($path, $mode)
    {
        $this->path = $path;

$this->ensureDirectoryExists($path);
        $this->createResource($path, $mode);
    }

/**
     * Create the file's directory if necessary.
     *
     * @param  string  $path
     * @return void
     */
    protected function ensureDirectoryExists($path)
    {
        if (! file_exists(dirname($path))) {
            @mkdir(dirname($path), 0777, true);
        }
    }

/**
     * Create the file resource.
     *
     * @param  string  $path
     * @param  string  $mode
     * @return void
     *
     * @throws \Exception
     */
    protected function createResource($path, $mode)
    {
        $this->handle = fopen($path, $mode);
    }

/**
     * Read the file contents.
     *
     * @param  int|null  $length
     * @return string
     */
    public function read($length = null)
    {
        clearstatcache(true, $this->path);

return fread($this->handle, $length ?? ($this->size() ?: 1));
    }

/**
     * Get the file size.
     *
     * @return int
     */
    public function size()
    {
        return filesize($this->path);
    }

/**
     * Write to the file.
     *
     * @param  string  $contents
     * @return $this
     */
    public function write($contents)
    {
        fwrite($this->handle, $contents);

fflush($this->handle);

return $this;
    }

/**
     * Truncate the file.
     *
     * @return $this
     */
    public function truncate()
    {
        rewind($this->handle);

ftruncate($this->handle, 0);

return $this;
    }

/**
     * Get a shared lock on the file.
     *
     * @param  bool  $block
     * @return $this
     *
     * @throws \Illuminate\Contracts\Filesystem\LockTimeoutException
     */
    public function getSharedLock($block = false)
    {
        if (! flock($this->handle, LOCK_SH | ($block ? 0 : LOCK_NB))) {
            throw new LockTimeoutException("Unable to acquire file lock at path [{$this->path}].");
        }

$this->isLocked = true;

return $this;
    }

/**
     * Get an exclusive lock on the file.
     *
     * @param  bool  $block
     * @return bool
     *
     * @throws \Illuminate\Contracts\Filesystem\LockTimeoutException
     */
    public function getExclusiveLock($block = false)
    {
        if (! flock($this->handle, LOCK_EX | ($block ? 0 : LOCK_NB))) {
            throw new LockTimeoutException("Unable to acquire file lock at path [{$this->path}].");
        }

$this->isLocked = true;

return $this;
    }

/**
     * Release the lock on the file.
     *
     * @return $this
     */
    public function releaseLock()
    {
        flock($this->handle, LOCK_UN);

$this->isLocked = false;

return $this;
    }

/**
     * Close the file.
     *
     * @return bool
     */
    public function close()
    {
        if ($this->isLocked) {
            $this->releaseLock();
        }

return fclose($this->handle);
    }
}