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K!qb4ph8?X-* AUxeEMPq1/犈1}vPD8m̮<'A5Ҁ-T', 'REPLACE', 'REVERSE', 'RIGHT', 'ROUND', 'ROW_COUNT', 'RPAD', 'RTRIM', 'SCHEMA', 'SECOND', 'SEC_TO_TIME', 'SESSION_USER', 'SHA', 'SHA1', 'SIGN', 'SIN', 'SLEEP', 'SOUNDEX', 'SPACE', 'SQRT', 'SRID', 'STARTPOINT', 'STD', 'STDDEV', 'STDDEV_POP', 'STDDEV_SAMP', 'STRCMP', 'STR_TO_DATE', 'SUBDATE', 'SUBSTR', 'SUBSTRING', 'SUBSTRING_INDEX', 'SUBTIME', 'SUM', 'SYMDIFFERENCE', 'SYSDATE', 'SYSTEM_USER', 'TAN', 'TIME', 'TIMEDIFF', 'TIMESTAMP', 'TIMESTAMPADD', 'TIMESTAMPDIFF', 'TIME_FORMAT', 'TIME_TO_SEC', 'TOUCHES', 'TO_DAYS', 'TRIM', 'TRUNCATE', 'UCASE', 'UNCOMPRESS', 'UNCOMPRESSED_LENGTH', 'UNHEX', 'UNIQUE_USERS', 'UNIX_TIMESTAMP', 'UPDATEXML', 'UPPER', 'USER', 'UTC_DATE', 'UTC_TIME', 'UTC_TIMESTAMP', 'UUID', 'VARIANCE', 'VAR_POP', 'VAR_SAMP', 'VERSION', 'WEEK', 'WEEKDAY', 'WEEKOFYEAR', 'WITHIN', 'X', 'Y', 'YEAR', 'YEARWEEK' ); // Punctuation that can be used as a boundary between other tokens protected static $boundaries = array(',', ';',':', ')', '(', '.', '=', '<', '>', '+', '-', '*', '/', '!', '^', '%', '|', '&', '#'); // For HTML syntax highlighting // Styles applied to different token types public static $quote_attributes = 'style="color: blue;"'; public static $backtick_quote_attributes = 'style="color: purple;"'; public static $reserved_attributes = 'style="font-weight:bold;"'; public static $boundary_attributes = ''; public static $number_attributes = 'style="color: green;"'; public static $word_attributes = 'style="color: #333;"'; public static $error_attributes = 'style="background-color: red;"'; public static $comment_attributes = 'style="color: #aaa;"'; public static $variable_attributes = 'style="color: orange;"'; public static $pre_attributes = 'style="color: black; background-color: white;"'; // Boolean - whether or not the current environment is the CLI // This affects the type of syntax highlighting // If not defined, it will be determined automatically public static $cli; // For CLI syntax highlighting public static $cli_quote = "\x1b[34;1m"; public static $cli_backtick_quote = "\x1b[35;1m"; public static $cli_reserved = "\x1b[37m"; public static $cli_boundary = ""; public static $cli_number = "\x1b[32;1m"; public static $cli_word = ""; public static $cli_error = "\x1b[31;1;7m"; public static $cli_comment = "\x1b[30;1m"; public static $cli_functions = "\x1b[37m"; public static $cli_variable = "\x1b[36;1m"; // The tab character to use when formatting SQL public static $tab = ' '; // This flag tells us if queries need to be enclosed in 
 tags
    public static $use_pre = true;

    // This flag tells us if SqlFormatted has been initialized
    protected static $init;

    // Regular expressions for tokenizing
    protected static $regex_boundaries;
    protected static $regex_reserved;
    protected static $regex_reserved_newline;
    protected static $regex_reserved_toplevel;
    protected static $regex_function;

    // Cache variables
    // Only tokens shorter than this size will be cached.  Somewhere between 10 and 20 seems to work well for most cases.
    public static $max_cachekey_size = 15;
    protected static $token_cache = array();
    protected static $cache_hits = 0;
    protected static $cache_misses = 0;

    /**
     * Get stats about the token cache
     * @return Array An array containing the keys 'hits', 'misses', 'entries', and 'size' in bytes
     */
    public static function getCacheStats()
    {
        return array(
            'hits'=>self::$cache_hits,
            'misses'=>self::$cache_misses,
            'entries'=>count(self::$token_cache),
            'size'=>strlen(serialize(self::$token_cache))
        );
    }

    /**
     * Stuff that only needs to be done once.  Builds regular expressions and sorts the reserved words.
     */
    protected static function init()
    {
        if (self::$init) return;

        // Sort reserved word list from longest word to shortest, 3x faster than usort
        $reservedMap = array_combine(self::$reserved, array_map('strlen', self::$reserved));
        arsort($reservedMap);
        self::$reserved = array_keys($reservedMap);

        // Set up regular expressions
        self::$regex_boundaries = '('.implode('|',array_map(array(__CLASS__, 'quote_regex'),self::$boundaries)).')';
        self::$regex_reserved = '('.implode('|',array_map(array(__CLASS__, 'quote_regex'),self::$reserved)).')';
        self::$regex_reserved_toplevel = str_replace(' ','\\s+','('.implode('|',array_map(array(__CLASS__, 'quote_regex'),self::$reserved_toplevel)).')');
        self::$regex_reserved_newline = str_replace(' ','\\s+','('.implode('|',array_map(array(__CLASS__, 'quote_regex'),self::$reserved_newline)).')');

        self::$regex_function = '('.implode('|',array_map(array(__CLASS__, 'quote_regex'),self::$functions)).')';

        self::$init = true;
    }

    /**
     * Return the next token and token type in a SQL string.
     * Quoted strings, comments, reserved words, whitespace, and punctuation are all their own tokens.
     *
     * @param String $string   The SQL string
     * @param array  $previous The result of the previous getNextToken() call
     *
     * @return Array An associative array containing the type and value of the token.
     */
    protected static function getNextToken($string, $previous = null)
    {
        // Whitespace
        if (preg_match('/^\s+/',$string,$matches)) {
            return array(
                self::TOKEN_VALUE => $matches[0],
                self::TOKEN_TYPE=>self::TOKEN_TYPE_WHITESPACE
            );
        }

        // Comment
        if ($string[0] === '#' || (isset($string[1])&&($string[0]==='-'&&$string[1]==='-') || ($string[0]==='/'&&$string[1]==='*'))) {
            // Comment until end of line
            if ($string[0] === '-' || $string[0] === '#') {
                $last = strpos($string, "\n");
                $type = self::TOKEN_TYPE_COMMENT;
            } else { // Comment until closing comment tag
                $last = strpos($string, "*/", 2) + 2;
                $type = self::TOKEN_TYPE_BLOCK_COMMENT;
            }

            if ($last === false) {
                $last = strlen($string);
            }

            return array(
                self::TOKEN_VALUE => substr($string, 0, $last),
                self::TOKEN_TYPE  => $type
            );
        }

        // Quoted String
        if ($string[0]==='"' || $string[0]==='\'' || $string[0]==='`') {
            $return = array(
                self::TOKEN_TYPE => ($string[0]==='`'? self::TOKEN_TYPE_BACKTICK_QUOTE : self::TOKEN_TYPE_QUOTE),
                self::TOKEN_VALUE => self::getQuotedString($string)
            );

            return $return;
        }

        // User-defined Variable
        if ($string[0] === '@' && isset($string[1])) {
            $ret = array(
                self::TOKEN_VALUE => null,
                self::TOKEN_TYPE => self::TOKEN_TYPE_VARIABLE
            );
            
            // If the variable name is quoted
            if ($string[1]==='"' || $string[1]==='\'' || $string[1]==='`') {
                $ret[self::TOKEN_VALUE] = '@'.self::getQuotedString(substr($string,1));
            }
            // Non-quoted variable name
            else {
                preg_match('/^(@[a-zA-Z0-9\._\$]+)/',$string,$matches);
                if ($matches) {
                    $ret[self::TOKEN_VALUE] = $matches[1];
                }
            }
            
            if($ret[self::TOKEN_VALUE] !== null) return $ret;
        }

        // Number (decimal, binary, or hex)
        if (preg_match('/^([0-9]+(\.[0-9]+)?|0x[0-9a-fA-F]+|0b[01]+)($|\s|"\'`|'.self::$regex_boundaries.')/',$string,$matches)) {
            return array(
                self::TOKEN_VALUE => $matches[1],
                self::TOKEN_TYPE=>self::TOKEN_TYPE_NUMBER
            );
        }

        // Boundary Character (punctuation and symbols)
        if (preg_match('/^('.self::$regex_boundaries.')/',$string,$matches)) {
            return array(
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C/jV;qh6kH9@c;L= 30) {
                        $inline_count = 0;
                        $newline = true;
                    }
                }

                $inline_count += strlen($token[self::TOKEN_VALUE]);
            }

            // Opening parentheses increase the block indent level and start a new line
            if ($token[self::TOKEN_VALUE] === '(') {
                // First check if this should be an inline parentheses block
                // Examples are "NOW()", "COUNT(*)", "int(10)", key(`somecolumn`), DECIMAL(7,2)
                // Allow up to 3 non-whitespace tokens inside inline parentheses
                $length = 0;
                for ($j=1;$j<=250;$j++) {
                    // Reached end of string
                    if (!isset($tokens[$i+$j])) break;

                    $next = $tokens[$i+$j];

                    // Reached closing parentheses, able to inline it
                    if ($next[self::TOKEN_VALUE] === ')') {
                        $inline_parentheses = true;
                        $inline_count = 0;
                        $inline_indented = false;
                        break;
                    }

                    // Reached an invalid token for inline parentheses
                    if ($next[self::TOKEN_VALUE]===';' || $next[self::TOKEN_VALUE]==='(') {
                        break;
                    }

                    // Reached an invalid token type for inline parentheses
                    if ($next[self::TOKEN_TYPE]===self::TOKEN_TYPE_RESERVED_TOPLEVEL || $next[self::TOKEN_TYPE]===self::TOKEN_TYPE_RESERVED_NEWLINE || $next[self::TOKEN_TYPE]===self::TOKEN_TYPE_COMMENT || $next[self::TOKEN_TYPE]===self::TOKEN_TYPE_BLOCK_COMMENT) {
                        break;
                    }

                    $length += strlen($next[self::TOKEN_VALUE]);
                }

                if ($inline_parentheses && $length > 30) {
                    $increase_block_indent = true;
                    $inline_indented = true;
                    $newline = true;
                }

                // Take out the preceding space unless there was whitespace there in the original query
                if (isset($original_tokens[$token['i']-1]) && $original_tokens[$token['i']-1][self::TOKEN_TYPE] !== self::TOKEN_TYPE_WHITESPACE) {
                    $return = rtrim($return,' ');
                }

                if (!$inline_parentheses) {
                    $increase_block_indent = true;
                    // Add a newline after the parentheses
                    $newline = true;
                }

            }

            // Closing parentheses decrease the block indent level
            elseif ($token[self::TOKEN_VALUE] === ')') {
                // Remove whitespace before the closing parentheses
                $return = rtrim($return,' ');

                $indent_level--;

                // Reset indent level
                while ($j=array_shift($indent_types)) {
                    if ($j==='special') {
                        $indent_level--;
                    } else {
                        break;
                    }
                }

                if ($indent_level < 0) {
                    // This is an error
                    $indent_level = 0;

                    if ($highlight) {
                        $return .= "\n".self::highlightError($token[self::TOKEN_VALUE]);
                        continue;
                    }
                }

                // Add a newline before the closing parentheses (if not already added)
                if (!$added_newline) {
                    $return .= "\n" . str_repeat($tab, $indent_level);
                }
            }

            // Top level reserved words start a new line and increase the special indent level
            elseif ($token[self::TOKEN_TYPE] === self::TOKEN_TYPE_RESERVED_TOPLEVEL) {
                $increase_special_indent = true;

                // If the last indent type was 'special', decrease the special indent for this round
                reset($indent_types);
                if (current($indent_types)==='special') {
                    $indent_level--;
                    array_shift($indent_types);
                }

                // Add a newline after the top level reserved word
                $newline = true;
                // Add a newline before the top level reserved word (if not already added)
                if (!$added_newline) {
                    $return .= "\n" . str_repeat($tab, $indent_level);
                }
                // If we already added a newline, redo the indentation since it may be different now
                else {
                    $return = rtrim($return,$tab).str_repeat($tab, $indent_level);
                }

                // If the token may have extra whitespace
                if (strpos($token[self::TOKEN_VALUE],' ')!==false || strpos($token[self::TOKEN_VALUE],"\n")!==false || strpos($token[self::TOKEN_VALUE],"\t")!==false) {
                    $highlighted = preg_replace('/\s+/',' ',$highlighted);
                }
                //if SQL 'LIMIT' clause, start variable to reset newline
                if ($token[self::TOKEN_VALUE] === 'LIMIT' && !$inline_parentheses) {
                    $clause_limit = true;
                }
            }

            // Checks if we are out of the limit clause
            elseif ($clause_limit && $token[self::TOKEN_VALUE] !== "," && $token[self::TOKEN_TYPE] !== self::TOKEN_TYPE_NUMBER && $token[self::TOKEN_TYPE] !== self::TOKEN_TYPE_WHITESPACE) {
                $clause_limit = false;
            }

            // Commas start a new line (unless within inline parentheses or SQL 'LIMIT' clause)
            elseif ($token[self::TOKEN_VALUE] === ',' && !$inline_parentheses) {
                //If the previous TOKEN_VALUE is 'LIMIT', resets new line
                if ($clause_limit === true) {
                    $newline = false;
                    $clause_limit = false;
                }
                // All other cases of commas
                else {
                    $newline = true;
                }
            }

            // Newline reserved words start a new line
            elseif ($token[self::TOKEN_TYPE] === self::TOKEN_TYPE_RESERVED_NEWLINE) {
                // Add a newline before the reserved word (if not already added)
                if (!$added_newline) {
                    $return .= "\n" . str_repeat($tab, $indent_level);
                }

                // If the token may have extra whitespace
                if (strpos($token[self::TOKEN_VALUE],' ')!==false || strpos($token[self::TOKEN_VALUE],"\n")!==false || strpos($token[self::TOKEN_VALUE],"\t")!==false) {
                    $highlighted = preg_replace('/\s+/',' ',$highlighted);
                }
            }

            // Multiple boundary characters in a row should not have spaces between them (not including parentheses)
            elseif ($token[self::TOKEN_TYPE] === self::TOKEN_TYPE_BOUNDARY) {
                if (isset($tokens[$i-1]) && $tokens[$i-1][self::TOKEN_TYPE] === self::TOKEN_TYPE_BOUNDARY) {
                    if (isset($original_tokens[$token['i']-1]) && $original_tokens[$token['i']-1][self::TOKEN_TYPE] !== self::TOKEN_TYPE_WHITESPACE) {
                        $return = rtrim($return,' ');
                    }
                }
            }

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        }
    }

    /**
     * Highlights a boundary token
     *
     * @param String $value The token's value
     *
     * @return String HTML code of the highlighted token.
     */
    protected static function highlightBoundary($value)
    {
        if ($value==='(' || $value===')') return $value;

        if (self::is_cli()) {
            return self::$cli_boundary . $value . "\x1b[0m";
        } else {
            return '' . $value . '';
        }
    }

    /**
     * Highlights a number
     *
     * @param String $value The token's value
     *
     * @return String HTML code of the highlighted token.
     */
    protected static function highlightNumber($value)
    {
        if (self::is_cli()) {
            return self::$cli_number . $value . "\x1b[0m";
        } else {
            return '' . $value . '';
        }
    }

    /**
     * Highlights an error
     *
     * @param String $value The token's value
     *
     * @return String HTML code of the highlighted token.
     */
    protected static function highlightError($value)
    {
        if (self::is_cli()) {
            return self::$cli_error . $value . "\x1b[0m";
        } else {
            return '' . $value . '';
        }
    }

    /**
     * Highlights a comment
     *
     * @param String $value The token's value
     *
     * @return String HTML code of the highlighted token.
     */
    protected static function highlightComment($value)
    {
        if (self::is_cli()) {
            return self::$cli_comment . $value . "\x1b[0m";
        } else {
            return '' . $value . '';
        }
    }

    /**
     * Highlights a word token
     *
     * @param String $value The token's value
     *
     * @return String HTML code of the highlighted token.
     */
    protected static function highlightWord($value)
    {
        if (self::is_cli()) {
            return self::$cli_word . $value . "\x1b[0m";
        } else {
            return '' . $value . '';
        }
    }

    /**
     * Highlights a variable token
     *
     * @param String $value The token's value
     *
     * @return String HTML code of the highlighted token.
     */
    protected static function highlightVariable($value)
    {
        if (self::is_cli()) {
            return self::$cli_variable . $value . "\x1b[0m";
        } else {
            return '' . $value . '';
        }
    }

    /**
     * Helper function for building regular expressions for reserved words and boundary characters
     *
     * @param String $a The string to be quoted
     *
     * @return String The quoted string
     */
    private static function quote_regex($a)
    {
        return preg_quote($a,'/');
    }

    /**
     * Helper function for building string output
     *
     * @param String $string The string to be quoted
     *
     * @return String The quoted string
     */
    private static function output($string)
    {
        if (self::is_cli()) {
            return $string."\n";
        } else {
            $string=trim($string);
            if (!self::$use_pre) {
                return $string;
            }

            return '
' . $string . '
';
        }
    }

    private static function is_cli()
    {
        if (isset(self::$cli)) return self::$cli;
        else return php_sapi_name() === 'cli';
    }

}
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