Streams.php

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<?php
 
namespace ILIAS\Filesystem\Stream;
 
use Psr\Http\Message\StreamInterface;
 
class Streams
{
 
    public static function ofString($string)
    {
        if (!is_string($string)) {
            throw new \InvalidArgumentException('The argument $string must be of type string but was "' . gettype($string) . '"');
        }
 
        $stream = new Stream(fopen('php://memory', 'rw'));
        $stream->write($string);
        return $stream;
    }
 
 
    public static function ofResource($resource)
    {
        if (!is_resource($resource)) {
            throw new \InvalidArgumentException('The argument $resource must be of type resource but was "' . gettype($resource) . '"');
        }
 
        return new Stream($resource);
    }
 
 
    public static function ofPsr7Stream(StreamInterface $stream)
    {
        $resource = $stream->detach();
        return self::ofResource($resource);
    }
}