class ColonSpacingSniff

class ColonSpacingSniff 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_COLON,
        ];
    }
    
    //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();
        $prev = $phpcsFile->findPrevious(Tokens::$emptyTokens, $stackPtr - 1, null, true);
        if ($tokens[$prev]['code'] !== T_STYLE) {
            // The colon is not part of a style definition.
            return;
        }
        if ($tokens[$prev]['content'] === 'progid') {
            // Special case for IE filters.
            return;
        }
        if ($tokens[$stackPtr - 1]['code'] === T_WHITESPACE) {
            $error = 'There must be no space before a colon in a style definition';
            $fix = $phpcsFile->addFixableError($error, $stackPtr, 'Before');
            if ($fix === true) {
                $phpcsFile->fixer
                    ->replaceToken($stackPtr - 1, '');
            }
        }
        $next = $phpcsFile->findNext(T_WHITESPACE, $stackPtr + 1, null, true);
        if ($tokens[$next]['code'] === T_SEMICOLON || $tokens[$next]['code'] === T_STYLE) {
            // Empty style definition, ignore it.
            return;
        }
        if ($tokens[$stackPtr + 1]['code'] !== T_WHITESPACE) {
            $error = 'Expected 1 space after colon in style definition; 0 found';
            $fix = $phpcsFile->addFixableError($error, $stackPtr, 'NoneAfter');
            if ($fix === true) {
                $phpcsFile->fixer
                    ->addContent($stackPtr, ' ');
            }
        }
        else {
            $content = $tokens[$stackPtr + 1]['content'];
            if (strpos($content, $phpcsFile->eolChar) === false) {
                $length = strlen($content);
                if ($length !== 1) {
                    $error = 'Expected 1 space after colon in style definition; %s found';
                    $data = [
                        $length,
                    ];
                    $fix = $phpcsFile->addFixableError($error, $stackPtr, 'After', $data);
                    if ($fix === true) {
                        $phpcsFile->fixer
                            ->replaceToken($stackPtr + 1, ' ');
                    }
                }
            }
            else {
                $error = 'Expected 1 space after colon in style definition; newline found';
                $fix = $phpcsFile->addFixableError($error, $stackPtr, 'AfterNewline');
                if ($fix === true) {
                    $phpcsFile->fixer
                        ->replaceToken($stackPtr + 1, ' ');
                }
            }
        }
        
        //end if
    }
    
    //end process()

}