<?php

declare (strict_types=1);
/*
 * This file is part of PHP CS Fixer.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *     Dariusz Rumiński <dariusz.ruminski@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */
namespace PhpCsFixer\Fixer\Basic;

use PhpCsFixer\AbstractFixer;
use PhpCsFixer\FixerDefinition\CodeSample;
use PhpCsFixer\FixerDefinition\FixerDefinition;
use PhpCsFixer\FixerDefinition\FixerDefinitionInterface;
use PhpCsFixer\Tokenizer\Token;
use PhpCsFixer\Tokenizer\Tokens;
/**
 * Fixer for rules defined in PSR1 ¶2.2.
 *
 * @author Dariusz Rumiński <dariusz.ruminski@gmail.com>
 *
 * @no-named-arguments Parameter names are not covered by the backward compatibility promise.
 */
final class EncodingFixer extends AbstractFixer
{
    /**
     * @var string
     */
    private $bom;
    public function __construct()
    {
        parent::__construct();
        $this->bom = \pack('CCC', 0xef, 0xbb, 0xbf);
    }
    public function getDefinition() : FixerDefinitionInterface
    {
        return new FixerDefinition('PHP code MUST use only UTF-8 without BOM (remove BOM).', [new CodeSample(<<<PHP
{$this->bom}<?php

echo "Hello!";

PHP
)]);
    }
    public function getPriority() : int
    {
        // must run first (at least before Fixers that using Tokens) - for speed reason of whole fixing process
        return 100;
    }
    public function isCandidate(Tokens $tokens) : bool
    {
        return \true;
    }
    protected function applyFix(\SplFileInfo $file, Tokens $tokens) : void
    {
        $content = $tokens[0]->getContent();
        if (\strncmp($content, $this->bom, \strlen($this->bom)) === 0) {
            $newContent = (string) \substr($content, 3);
            if ('' === $newContent) {
                $tokens->clearAt(0);
            } else {
                $tokens[0] = new Token([$tokens[0]->getId(), $newContent]);
            }
        }
    }
}
