class LowercaseStyleDefinitionSniff

class LowercaseStyleDefinitionSniff implements Sniff {
    
    /**
     * A list of tokenizers this sniff supports.
     *
     * @var array
     */
    public $supportedTokenizers = [
        'CSS',
    ];
    
    /**
     * Returns the token types that this sniff is interested in.
     *
     * @return array<int|string>
     */
    public function register() {
        return [
            T_OPEN_CURLY_BRACKET,
        ];
    }
    
    //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 void
     */
    public function process(File $phpcsFile, $stackPtr) {
        $tokens = $phpcsFile->getTokens();
        $start = $stackPtr + 1;
        $end = $tokens[$stackPtr]['bracket_closer'] - 1;
        $inStyle = null;
        for ($i = $start; $i <= $end; $i++) {
            // Skip nested definitions as they are checked individually.
            if ($tokens[$i]['code'] === T_OPEN_CURLY_BRACKET) {
                $i = $tokens[$i]['bracket_closer'];
                continue;
            }
            if ($tokens[$i]['code'] === T_STYLE) {
                $inStyle = $tokens[$i]['content'];
            }
            if ($tokens[$i]['code'] === T_SEMICOLON) {
                $inStyle = null;
            }
            if ($inStyle === 'progid') {
                // Special case for IE filters.
                continue;
            }
            if ($tokens[$i]['code'] === T_STYLE || $inStyle !== null && $tokens[$i]['code'] === T_STRING) {
                $expected = strtolower($tokens[$i]['content']);
                if ($expected !== $tokens[$i]['content']) {
                    $error = 'Style definitions must be lowercase; expected %s but found %s';
                    $data = [
                        $expected,
                        $tokens[$i]['content'],
                    ];
                    $fix = $phpcsFile->addFixableError($error, $i, 'FoundUpper', $data);
                    if ($fix === true) {
                        $phpcsFile->fixer
                            ->replaceToken($i, $expected);
                    }
                }
            }
        }
        
        //end for
    }
    
    //end process()

}