SVGDummyMachine.php

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<?php

namespace ILIAS\ResourceStorage\Flavours;

use ILIAS\Filesystem\Stream\FileStream;
use ILIAS\Filesystem\Stream\Streams;
use ILIAS\ResourceStorage\Flavour\Definition\FlavourDefinition;
use ILIAS\ResourceStorage\Flavour\Machine\Result;
use ILIAS\ResourceStorage\Information\FileInformation;

class SVGDummyMachine extends DummyMachine
{
    public function __construct()
    {
        $this->load(
            'svg_color_changing_machine',
            'svg_color_changing'
        );
    }


    public function processStream(
        FileInformation $information,
        FileStream $stream,
        FlavourDefinition $for_definition
    ): \Generator {
        $content = (string)$stream;

        $from_color = ':' . $for_definition->getColor() . ';';
        $to_color = ':' . $for_definition->getToColor() . ';';
        $content = str_replace($from_color, $to_color, $content);

        yield new Result(
            $for_definition,
            Streams::ofString($content)
        );
    }
}