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✏️ Editing: LineEndingsSniff.php

<?php
/**
 * Checks that end of line characters are correct.
 *
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/licence.txt BSD Licence
 */

namespace PHP_CodeSniffer\Standards\Generic\Sniffs\Files;

use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Sniffs\Sniff;

class LineEndingsSniff implements Sniff
{

/**
     * A list of tokenizers this sniff supports.
     *
     * @var array
     */
    public $supportedTokenizers = [
        'PHP',
        'JS',
        'CSS',
    ];

/**
     * The valid EOL character.
     *
     * @var string
     */
    public $eolChar = '\n';

/**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register()
    {
        return [
            T_OPEN_TAG,
            T_OPEN_TAG_WITH_ECHO,
        ];

}//end register()

/**
     * Processes this sniff, when one of its tokens is encountered.
     *
     * @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
     * @param int                         $stackPtr  The position of the current token in
     *                                               the stack passed in $tokens.
     *
     * @return int
     */
    public function process(File $phpcsFile, $stackPtr)
    {
        $found = $phpcsFile->eolChar;
        $found = str_replace("\n", '\n', $found);
        $found = str_replace("\r", '\r', $found);

$phpcsFile->recordMetric($stackPtr, 'EOL char', $found);

if ($found === $this->eolChar) {
            // Ignore the rest of the file.
            return $phpcsFile->numTokens;
        }

// Check for single line files without an EOL. This is a very special
        // case and the EOL char is set to \n when this happens.
        if ($found === '\n') {
            $tokens    = $phpcsFile->getTokens();
            $lastToken = ($phpcsFile->numTokens - 1);
            if ($tokens[$lastToken]['line'] === 1
                && $tokens[$lastToken]['content'] !== "\n"
            ) {
                return $phpcsFile->numTokens;
            }
        }

$error    = 'End of line character is invalid; expected "%s" but found "%s"';
        $expected = $this->eolChar;
        $expected = str_replace("\n", '\n', $expected);
        $expected = str_replace("\r", '\r', $expected);
        $data     = [
            $expected,
            $found,
        ];

// Errors are always reported on line 1, no matter where the first PHP tag is.
        $fix = $phpcsFile->addFixableError($error, 0, 'InvalidEOLChar', $data);

if ($fix === true) {
            $tokens = $phpcsFile->getTokens();
            switch ($this->eolChar) {
            case '\n':
                $eolChar = "\n";
                break;
            case '\r':
                $eolChar = "\r";
                break;
            case '\r\n':
                $eolChar = "\r\n";
                break;
            default:
                $eolChar = $this->eolChar;
                break;
            }

for ($i = 0; $i < $phpcsFile->numTokens; $i++) {
                if (isset($tokens[($i + 1)]) === true
                    && $tokens[($i + 1)]['line'] <= $tokens[$i]['line']
                ) {
                    continue;
                }

// Token is the last on a line.
                if (isset($tokens[$i]['orig_content']) === true) {
                    $tokenContent = $tokens[$i]['orig_content'];
                } else {
                    $tokenContent = $tokens[$i]['content'];
                }

if ($tokenContent === '') {
                    // Special case for JS/CSS close tag.
                    continue;
                }

$newContent  = rtrim($tokenContent, "\r\n");
                $newContent .= $eolChar;
                if ($tokenContent !== $newContent) {
                    $phpcsFile->fixer->replaceToken($i, $newContent);
                }
            }//end for
        }//end if

// Ignore the rest of the file.
        return $phpcsFile->numTokens;

}//end process()

}//end class

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