Class File

File.php

<?php

namespace FileComponent;

/**
 * Class File
 * @package FileComponent
 */
class File
{
    const READ_ONLY = 'r';
    const READ_WRITE = 'r+';
    const WRITE_ONLY_BEGIN_FILE = 'w';
    const READ_WRITE_BEGIN_FILE = 'w+';
    const WRITE_ONLY_END_FILE = 'a';
    const READ_WRITE_END_FILE = 'a+';
    const CREATE_TO_WRITE = 'x';
    const CREATE_TO_READ_WRITE = 'x+';

    private $name;

    private $mode;

    private $resource;

    /**
     * @param string $fileName
     * @param string $mode
     */
    public function __construct($fileName, $mode = self::READ_ONLY)
    {
        $this->name = $fileName;
        $this->mode = $mode;
    }

    /**
     * @throws \Exception
     */
    public function open()
    {
        if ($this->exists()) {
            $this->validateMode();
        }

        $this->resource = fopen($this->name, $this->mode);
    }

    /**
     * @param string $content
     */
    public function write($content)
    {
        if (!$this->isOpen()) {
            $this->open();
        }

        fwrite($this->resource, $content);
    }

    public function writeFile($file, $content)
    {

    }

    public function close()
    {
        fclose($this->resource);
    }

    /**
     * @throws \Exception
     * @return bool
     */
    public function validateMode()
    {
        if ($this->mode == self::CREATE_TO_READ_WRITE || $this->mode == self::CREATE_TO_WRITE) {
            throw new \Exception('This mode to open file is not allowed because the file is already created');
        }

        return true;
    }

    /**
     * @return bool
     */
    public function exists()
    {
        return file_exists($this->name) ? true : false;
    }

    /**
     * @return bool
     */
    public function isOpen()
    {
        return !empty($this->resource) ? true : false;
    }

    public static function __callStatic($name, $arguments)
    {
        static $instance = null;
        if ($instance == null) {
            $class = new static();

        }
        return call_user_func_array([__CLASS__, $name], $arguments);
    }
}