Digitigrade/Policy/BasicCensor.php


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<?php
namespace Digitigrade\Policy;

use Digitigrade\Model\Actor;
use Digitigrade\Model\Note;
use Digitigrade\Policy;

/**
 * Simple word censorship policy that replaces all instances of some text with another string.
 * 
 * Suffers from the Scunthorpe problem.
 * 
 * Can also be (ab)used to replace some word with another word for humorous effect :3
 */
class BasicCensor extends Policy {
    /** @var string[] */
    private array $words;
    private string $replacement;

    public function __construct(array $words, string $replacement) {
        $this->words = $words;
        $this->replacement = $replacement;
    }

    public function checkNote(Note $note): bool {
        foreach ($this->words as $w) {
            if (isset($note->summary))
                $note->summary = str_replace($w, $this->replacement, $note->summary);
            $note->plainContent = str_replace($w, $this->replacement, $note->plainContent);
            foreach ($note->formattedContent as $type => $content) {
                $note->formattedContent[$type] = str_replace($w, $this->replacement, $content);
            }
        }
        return true;
    }

    public function checkActor(Actor $actor): bool {
        foreach ($this->words as $w) {
            $actor->displayName = str_replace($w, $this->replacement, $actor->displayName);
            if (isset($actor->pronouns))
                $actor->pronouns = str_replace($w, $this->replacement, $actor->pronouns);
            if (isset($actor->bio))
                $actor->bio = str_replace($w, $this->replacement, $actor->bio);
        }
        return true;
    }
}