class JSLintSniff

class JSLintSniff implements Sniff {
    
    /**
     * A list of tokenizers this sniff supports.
     *
     * @var array
     */
    public $supportedTokenizers = [
        'JS',
    ];
    
    /**
     * 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 jslint.js could not be run.
     */
    public function process(File $phpcsFile, $stackPtr) {
        $rhinoPath = Config::getExecutablePath('rhino');
        $jslintPath = Config::getExecutablePath('jslint');
        if ($rhinoPath === null || $jslintPath === null) {
            return $phpcsFile->numTokens;
        }
        $fileName = $phpcsFile->getFilename();
        $rhinoPath = Common::escapeshellcmd($rhinoPath);
        $jslintPath = Common::escapeshellcmd($jslintPath);
        $cmd = "{$rhinoPath} \"{$jslintPath}\" " . escapeshellarg($fileName);
        exec($cmd, $output, $retval);
        if (is_array($output) === true) {
            foreach ($output as $finding) {
                $matches = [];
                $numMatches = preg_match('/Lint at line ([0-9]+).*:(.*)$/', $finding, $matches);
                if ($numMatches === 0) {
                    continue;
                }
                $line = (int) $matches[1];
                $message = 'jslint says: ' . trim($matches[2]);
                $phpcsFile->addWarningOnLine($message, $line, 'ExternalTool');
            }
        }
        // Ignore the rest of the file.
        return $phpcsFile->numTokens;
    }
    
    //end process()

}