PHPStreamFunctions.php

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<?php
declare(strict_types=1);

namespace ILIAS\Filesystem\Util;

final class PHPStreamFunctions
{

    public static function ftell($handle)
    {
        return ftell($handle);
    }

    public static function fclose($handle)
    {
        fclose($handle);
    }

    public static function fseek($stream, $offset, $whence)
    {
        return fseek($stream, $offset, $whence);
    }

    public static function fread($handle, $length)
    {
        return fread($handle, $length);
    }

    public static function stream_get_contents($handle, $length = -1)
    {
        return stream_get_contents($handle, $length);
    }

    public static function fwrite($handle, $string, $length = null)
    {

        //it seems like php juggles the null to 0 and pass it to the function which leads to a write operation of zero length ...
        if (is_null($length)) {
            return fwrite($handle, $string);
        }

        return fwrite($handle, $string, $length);
    }
}