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<?php
/**
 * Runs eslint on the file.
 *
 * @author    Ryan McCue <ryan+gh@hmn.md>
 * @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
 *
 * @deprecated 3.9.0
 */

namespace PHP_CodeSniffer\Standards\Generic\Sniffs\Debug;

use PHP_CodeSniffer\Config;
use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Sniffs\DeprecatedSniff;
use PHP_CodeSniffer\Sniffs\Sniff;
use PHP_CodeSniffer\Util\Common;

class ESLintSniff implements Sniff, DeprecatedSniff
{

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

/**
     * ESLint configuration file path.
     *
     * @var string|null Path to eslintrc. Null to autodetect.
     */
    public $configFile = null;

/**
     * Returns the token types that this sniff is interested in.
     *
     * @return array<int|string>
     */
    public function register()
    {
        return [T_OPEN_TAG];

}//end register()

/**
     * Processes the tokens that this sniff is interested in.
     *
     * @param \PHP_CodeSniffer\Files\File $phpcsFile The file where the token was found.
     * @param int                         $stackPtr  The position in the stack where
     *                                               the token was found.
     *
     * @return int
     * @throws \PHP_CodeSniffer\Exceptions\RuntimeException If jshint.js could not be run.
     */
    public function process(File $phpcsFile, $stackPtr)
    {
        $eslintPath = Config::getExecutablePath('eslint');
        if ($eslintPath === null) {
            return $phpcsFile->numTokens;
        }

$filename = $phpcsFile->getFilename();

$configFile = $this->configFile;
        if (empty($configFile) === true) {
            // Attempt to autodetect.
            $candidates = glob('.eslintrc{.js,.yaml,.yml,.json}', GLOB_BRACE);
            if (empty($candidates) === false) {
                $configFile = $candidates[0];
            }
        }

$eslintOptions = ['--format json'];
        if (empty($configFile) === false) {
            $eslintOptions[] = '--config '.escapeshellarg($configFile);
        }

$cmd = Common::escapeshellcmd(escapeshellarg($eslintPath).' '.implode(' ', $eslintOptions).' '.escapeshellarg($filename));

// Execute!
        exec($cmd, $stdout, $code);

if ($code <= 0) {
            // No errors, continue.
            return $phpcsFile->numTokens;
        }

$data = json_decode(implode("\n", $stdout));
        if (json_last_error() !== JSON_ERROR_NONE) {
            // Ignore any errors.
            return $phpcsFile->numTokens;
        }

// Data is a list of files, but we only pass a single one.
        $messages = $data[0]->messages;
        foreach ($messages as $error) {
            $message = 'eslint says: '.$error->message;
            if (empty($error->fatal) === false || $error->severity === 2) {
                $phpcsFile->addErrorOnLine($message, $error->line, 'ExternalTool');
            } else {
                $phpcsFile->addWarningOnLine($message, $error->line, 'ExternalTool');
            }
        }

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

}//end process()

/**
     * Provide the version number in which the sniff was deprecated.
     *
     * @return string
     */
    public function getDeprecationVersion()
    {
        return 'v3.9.0';

}//end getDeprecationVersion()

/**
     * Provide the version number in which the sniff will be removed.
     *
     * @return string
     */
    public function getRemovalVersion()
    {
        return 'v4.0.0';

}//end getRemovalVersion()

/**
     * Provide a custom message to display with the deprecation.
     *
     * @return string
     */
    public function getDeprecationMessage()
    {
        return 'Support for scanning JavaScript files will be removed completely in v4.0.0.';

}//end getDeprecationMessage()

}//end class

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