652 lines
24 KiB
PHP
652 lines
24 KiB
PHP
<?php
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/* $Id$ */
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/** SQL Parser Functions for phpMyAdmin
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*
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* Copyright 2002 Robin Johnson <robbat2@users.sourceforge.net>
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* http://www.orbis-terrarum.net/?l=people.robbat2
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*
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* These functions define an SQL parser system, capable of understanding and
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* extracting data from a MySQL type SQL query.
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*
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* The basic procedure for using the new SQL parser:
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* On any page that needs to extract data from a query or to pretty-print a
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* query, you need code like this up at the top:
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*
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* ($sql contains the query)
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* $parsedSQL = PMA_SQP_Parse($sql);
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*
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* If you want to extract data from it then, you just need to run
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* $SQLinfo = PMA_SQP_Analyze($parsedSQL);
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* (returned structure of this function is being rewritten presently);
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*
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* If you want a pretty-printed version of the query, do:
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* $string = PMA_SQP_FormatHTML($parsedSQL);
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* (note that that you need to have syntax.css.php3 included somehow in your
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* page for it to work, I recommend '<link rel="stylesheet" type="text/css"
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* href="syntax.css.php3" />' at the moment.)
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*
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*/
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if (!defined('PMA_SQP_LIB_INCLUDED')) {
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define('PMA_SQP_LIB_INCLUDED', 1);
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if(!defined('DEBUGTIMING')) {
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function PMA_SQP_ArrayAdd(&$arr,$type,$data, &$arrsize)
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{
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$arr[] = array( 'type' => $type, 'data' => $data );
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$arrsize++;
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}
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} else {
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function PMA_SQP_ArrayAdd(&$arr,$type,$data, &$arrsize)
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{
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global $timer;
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$t = $timer;
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$arr[] = array( 'type' => $type, 'data' => $data , 'time' => $t );
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$timer = microtime();
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$arrsize++;
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}
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}
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function PMA_SQP_Parse($sql)
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{
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$len = strlen($sql);
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if($len == 0) {
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return array();
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}
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$sql_array = array();
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$sql_array['raw'] = $sql;
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$count1 = 0;
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$count2 = 0;
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$punct_queryend = ';';
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$punct_qualifier = '.';
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$punct_listsep = ',';
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$punct_level_plus = '(';
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$punct_level_minus = ')';
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$digit_floatdecimal = '.';
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$digit_hexset = 'x';
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$bracket_list = '()[]{}';
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$allpunct_list = '-,;:!?/.^~\*&%+<=>|';
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$allpunct_list_pair = array (
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0 => '!=',
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1 => '&&',
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2 => ':=',
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3 => '<<',
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4 => '<=',
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5 => '<=>',
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6 => '<>',
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7 => '>=',
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8 => '>>',
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9 => '||',
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);
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$allpunct_list_pair_size = 10; //count($allpunct_list_pair);
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$quote_list = "\'\"\`";
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$arraysize = 0;
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while($count2 < $len) {
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$c = $sql[$count2];
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$count1 = $count2;
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if( ($c == "\n") ) {
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$count2++;
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PMA_SQP_ArrayAdd( $sql_array, 'white_newline', '', $arraysize);
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continue;
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}
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//check for white space
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if(PMA_STR_IsSpace($c)) {
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$count2++;
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continue;
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}
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// check for comment lines.
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// MySQL style #
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// C style /* */
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// ANSI style --
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if( ($c == '#') || (($count2+1 < $len) && ($c == '/') && ($sql[$count2+1] == '*')) || (($c == '-') && ($count2+2 < $len) && ($sql[$count2+1] == '-') && ($sql[$count2+2] == ' '))) {
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$count2++;
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$pos = 0;
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$type = 'bad';
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switch($c) {
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case '#':
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$type = 'mysql';
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case '-':
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$type = 'ansi';
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$pos = strpos($sql,"\n",$count2);
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break;
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case '/':
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$type = 'c';
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$pos = strpos($sql,"*/",$count2);
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$pos += 2;
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break;
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default:
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break;
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}
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$count2 = ($pos < $count2) ? $len : $pos;
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$str = substr($sql,$count1,$count2-$count1);
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PMA_SQP_ArrayAdd ( $sql_array, 'comment_'.$type, $str, $arraysize);
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continue;
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}
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//check for something inside quotation marks
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if(PMA_STR_StrInStr($c,$quote_list)) {
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$startquotepos = $count2;
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$quotetype = $c;
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$count2++;
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$escaped = FALSE;
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$escaped_escaped = FALSE;
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$pos = $count2;
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$oldpos = 0;
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do {
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$oldpos = $pos;
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$pos = strpos($sql,$quotetype,$oldpos);
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// ($pos === FALSE)
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if(!is_integer($pos)) {
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trigger_error('Syntax: Unclosed quote ('.$quotetype.') at '.$startquotepos);
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return;
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}
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//if the quote is the first character,
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//it can't be escaped, so don't do the rest of the code
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if($pos == 0) {
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break;
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}
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if(PMA_STR_CharIsEscaped($sql,$pos)) {
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$pos ++;
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continue;
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} else {
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break;
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}
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} while ( $len > $pos );
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$count2 = $pos;
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$count2++;
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$type = 'quote_';
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switch($quotetype) {
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case "'":
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$type .= 'single';
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break;
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case "\"":
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$type .= 'double';
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break;
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case "`":
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$type .= 'backtick';
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break;
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default:
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break;
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}
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$data = substr($sql, $count1, $count2-$count1);
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PMA_SQP_ArrayAdd ( $sql_array, $type, $data, $arraysize );
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continue;
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}
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//check for brackets
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if(PMA_STR_StrInStr($c,$bracket_list)) {
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//all bracket tokens are only one item long
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$count2++;
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$type_type = '';
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if(PMA_STR_StrInStr($c,'([{')) {
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$type_type = 'open';
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} else {
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$type_type = 'close';
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}
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$type_style = '';
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if(PMA_STR_StrInStr($c,'()')) {
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$type_style = 'round';
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} elseif(PMA_STR_StrInStr($c,'[]')) {
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$type_style = 'square';
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} else {
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$type_style = 'curly';
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}
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$type = 'punct_bracket_'.$type_type.'_'.$type_style;
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PMA_SQP_ArrayAdd ( $sql_array, $type, $c, $arraysize);
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continue;
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}
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//check for punct
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if(PMA_STR_StrInStr($c,$allpunct_list))
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{
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while( ($count2 < $len) && PMA_STR_StrInStr($sql[$count2],$allpunct_list) ) {
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$count2++;
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}
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$l = $count2-$count1;
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if($l == 1) {
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$punct_data = $c;
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} else {
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$punct_data = substr($sql,$count1,$l);
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}
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//special case, sometimes, althought two characters are adjectent directly,
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//they ACTUALLY need to be seperate
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if( $l == 1 ) {
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$t_suffix = '';
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switch($punct_data) {
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case $punct_queryend:
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$t_suffix = '_queryend';
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break;
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case $punct_qualifier:
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$t_suffix = '_qualifier';
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break;
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case $punct_listsep:
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$t_suffix = '_listsep';
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break;
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default:
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break;
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}
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PMA_SQP_ArrayAdd ( $sql_array, 'punct'.$t_suffix, $punct_data, $arraysize);
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} elseif( PMA_STR_BinarySearchInArr($punct_data,$allpunct_list_pair,$allpunct_list_pair_size)) {
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//Ok, we have one of the valid combined punct expressions
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PMA_SQP_ArrayAdd ( $sql_array, 'punct', $punct_data, $arraysize );
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} else {
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//bad luck, lets split it up more
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$first = $punct_data[0];
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$first2 = $punct_data[0].$punct_data[1];
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$last2 = $punct_data[$l-2].$punct_data[$l-1];
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$last = $punct_data[$l-1];
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if(($first == ',') || ($first == ';') || ($first == '.') || $first = '*') {
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$count2 = $count1 + 1;
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$punct_data = $first;
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} elseif(($last2 == '/*') || ($last2 == '--')) {
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$count2-=2;
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$punct_data = substr($sql,$count1,$count2-$count1);
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} elseif(($last == '-') || ($last == '+') || ($last == '!')) {
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$count2--;
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$punct_data = substr($sql,$count1,$count2-$count1);
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} else {
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trigger_error('Syntax: Unknown punctation string ('.$punct_data.') at '.$count1);
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return;
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}
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PMA_SQP_ArrayAdd ( $sql_array, 'punct', $punct_data, $arraysize);
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continue;
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}
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continue;
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}
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//check for alpha
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if( FALSE && PMA_STR_IsSqlIdentifier($c,FALSE) || ($c == '@')) {
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$count2 ++;
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$is_SQLvariable = ($c == '@');
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$is_Digit = (!$is_SQLvariable) && PMA_STR_IsDigit($c);
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$is_HexDigit = ($is_Digit) && ($c == '0') && ($sql[$count2] == 'x');
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$is_FloatDigit = FALSE;
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$is_FloatDigitExponent = FALSE;
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if($is_HexDigit) {
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$count2++;
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}
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while(($count2 < $len) && PMA_STR_IsSqlIdentifier($sql[$count2],$is_SQLvariable || $is_Digit)) {
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$c2 = $sql[$count2];
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if($is_SQLvariable && ($c2 == '.')) {
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$count2++;
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continue;
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}
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if($is_Digit && (!$is_HexDigit) && ($c2 == '.')) {
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$count2++;
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if(!$is_FloatDigit) {
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$is_FloatDigit = TRUE;
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continue;
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} else {
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trigger_error('Syntax: Invalid Identifer ('.substr($sql,$count1,$count2-$count1).') at '.$count1);
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return;
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}
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}
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if($is_Digit && (!$is_HexDigit) && (($c2 == 'e') || ($c2 == 'E'))) {
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if(!$is_FloatDigitExponent) {
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$is_FloatDigitExponent = TRUE;
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$is_FloatDigit = TRUE;
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$count2++;
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continue;
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} else {
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$is_Digit = FALSE;
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$is_FloatDigit = FALSE;
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}
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}
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if( ($is_HexDigit && PMA_STR_IsHexDigit($c2)) || ($is_Digit && PMA_STR_IsDigit($c2))) {
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$count2++;
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continue;
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} else {
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$is_Digit = FALSE;
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$is_HexDigit = FALSE;
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}
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$count2++;
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}
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$l = $count2-$count1;
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$str = substr($sql,$count1,$l);
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$type = '';
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if($is_Digit) {
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$type = 'digit';
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if($is_FloatDigit) {
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$type .= '_float';
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} elseif($is_HexDigit) {
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$type .= '_hex';
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} else {
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$type .= '_integer';
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}
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} else {
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if($is_SQLvariable != FALSE) {
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$type = 'alpha_variable';
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} else {
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$type = 'alpha';
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}
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}
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PMA_SQP_ArrayAdd ( $sql_array, $type, $str, $arraysize );
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continue;
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}
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//DEBUG
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$count2++;
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echo 'You seem to have found a bug in the SQL parser.<br />Please submit a bug report with the data chunk below:<br />--BEGIN CUT--<br />';
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$debugstr = '$Id$<br />';
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$debugstr .= 'Why did we get here? '.$count1.' '.$count2.' '.$len.'<br />'."\n";
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$debugstr .= 'Leftover: '.substr($sql,$count1,$count2-$count1).'<br />'."\n";
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$debugstr .= 'A: '.$count1.' '.$count2.'<br />'."\n";
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$debugstr .= 'SQL: '.$sql;
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$encodedstr = nl2br(chunk_split(base64_encode(gzcompress($debugstr,9))));
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echo $encodedstr;
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echo '---END CUT---<br />';
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//$decodedstr = str_replace('<br />','', base64_decode(gzuncompress($encodedstr)));
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$decodedstr = gzuncompress(base64_decode(str_replace('<br />','',$encodedstr)));
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echo $decodedstr;
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flush();
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ob_flush();
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die();
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}
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global $syntax_columnAttrib, $syntax_reservedWord, $syntax_columnType, $syntax_functionName;
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$len_columnAttrib = count($syntax_columnAttrib);
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$len_reservedWord = count($syntax_reservedWord);
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$len_columnType = count($syntax_columnType);
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$len_functionName = count($syntax_functionName);
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if($arraysize > 0) {
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$t_next = $sql_array[0]['type'];
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$t_prev = NULL;
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}
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for($i = 0; $i < $arraysize; $i++) {
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$t_prev = $t_cur;
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$t_cur = $t_next;
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if(($i+1)<$arraysize) {
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$t_next = $sql_array[$i+1]['type'];
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} else {
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$t_next = NULL;
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}
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if($t_cur == 'alpha') {
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$t_suffix = '_identifier';
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$d_cur_upper = strtoupper($sql_array[$i]['data']);
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if( ($t_next == 'punct_qualifier') || ($t_prev == 'punct_qualifier')) {
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$t_suffix = '_identifier';
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} elseif( ($t_next == 'punct_bracket_open_round') && PMA_STR_BinarySearchInArr($d_cur_upper,$syntax_functionName,$len_functionName)) {
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$t_suffix = '_functionName';
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} elseif(PMA_STR_BinarySearchInArr($d_cur_upper,$syntax_reservedWord,$len_reservedWord)) {
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$t_suffix = '_reservedWord';
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} elseif(PMA_STR_BinarySearchInArr($d_cur_upper,$syntax_columnType,$len_columnType)) {
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$t_suffix = '_columnType';
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} elseif(PMA_STR_BinarySearchInArr($d_cur_upper,$syntax_columnAttrib,$len_columnAttrib)) {
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$t_suffix = '_columnAttrib';
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} else {
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// Do nothing
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}
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$sql_array[$i]['type'] .= $t_suffix;
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}
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}
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// Store the size of the array inside the array, as count() is a slow operation.
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$sql_array['len'] = $arraysize;
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// Send the data back
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return $sql_array;
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}
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function PMA_SQP_Analyze($arr) {
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$result = array();
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$size = $arr['len'];
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$subresult = array(
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'querytype' => '',
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'list_db' => array(),
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'list_tbl' => array(),
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'list_tbl_alias' => array(),
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'list_col' => array(),
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'list_col_alias' => array(),
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);
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$subresult_empty = $subresult;
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$seek_queryend = FALSE;
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$supportedQueryTypes = array(
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'SELECT',
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'UPDATE',
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'DELETE',
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'INSERT',
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'REPLACE',
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'TRUNCATE'
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/*
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// Support for these additional query types will come later on.
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// They are not needed yet
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'EXPLAIN',
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'DESCRIBE',
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'SHOW',
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'CREATE',
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'SET',
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'ALTER'
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*/
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);
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$supportedQueryTypes_size = count($supportedQueryTypes);
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for($i=0;$i <= $size; $i++) {
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// High speed seek for locating the end of the current query
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if($seek_queryend == TRUE) {
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if($arr[$i]['type'] == 'punct_queryend') {
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$seek_queryend = FALSE;
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} else {
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continue;
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}
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}
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switch($arr[$i]['type']) {
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case 'punct_queryend':
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$result[] = $subresult;
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$subresult = $subresult_empty;
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break;
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case 'alpha_reservedWord':
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// We don't know what type of query yet, so run this
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if($subresult['querytype'] == '') {
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$subresult['querytype'] = strtoupper($arr[$i]['data']);
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}
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// Check if we support this type of query
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if(! PMA_STR_BinarySearchInArr($subresult['querytype'],$supportedQueryTypes,$supportedQueryTypes_size)) {
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// Skip ahead to the next one if we don't
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$seek_queryend = TRUE;
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}
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break;
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default:
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break;
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}
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switch($subresult['querytype']) {
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case 'SELECT':
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break;
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default:
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break;
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}
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}
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// They are are naughty and didn't have a trailing semi-colon, then still handle it properly
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if($subresult['querytype'] != '') {
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$result[] = $subresult;
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}
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echo '<pre>';
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print_r($result);
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echo '</pre>';
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}
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function PMA_SQP_FormatHTML_colorize($arr) {
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$i = strpos($arr['type'],'_');
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$class = '';
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if($i > 0) {
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$class = 'syntax_'.substr($arr['type'],0,$i).' ';
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}
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$class .= 'syntax_'.$arr['type'];
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return '<span class="'.$class.'">'.htmlspecialchars($arr['data']).'</span>';
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}
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function PMA_SQP_FormatHTML($arr) {
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$str = '';
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$indent = 0;
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$bracketlevel = 0;
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$functionlevel = 0;
|
|
$infunction = FALSE;
|
|
$space_punct_listsep = ' ';
|
|
$space_punct_listsep_functionName = ' ';
|
|
$space_alpha_reservedWord = '<br />'."\n";
|
|
$keywordsWithBrackets = array(
|
|
'INDEX',
|
|
'INTO',
|
|
'KEY',
|
|
'PRIMARY',
|
|
'REFERENCES',
|
|
'UNIQUE'
|
|
);
|
|
$keywordsWithBrackets_size = count($keywordsWithBrackets);
|
|
$arraysize = $arr['len'];
|
|
$typearr = array();
|
|
if($arraysize >= 0) {
|
|
/* array_push($typearr,NULL);
|
|
array_push($typearr,NULL);
|
|
array_push($typearr,NULL);
|
|
array_push($typearr,$arr[0]['type']);
|
|
array_push($typearr,$arr[1]['type']); */
|
|
|
|
$typearr[0] = NULL;
|
|
$typearr[1] = NULL;
|
|
$typearr[2] = NULL;
|
|
$typearr[3] = $arr[0]['type'];
|
|
}
|
|
|
|
for($i = 0; $i < $arraysize; $i++) {
|
|
$before = '';
|
|
$after = '';
|
|
$indent = 0;
|
|
// array_shift($typearr);
|
|
/*
|
|
0 prev2
|
|
1 prev
|
|
2 current
|
|
3 next
|
|
*/
|
|
if(($i+1)<$arraysize) {
|
|
//array_push($typearr,$arr[$i+1]['type']);
|
|
$typearr[4] = $arr[$i+1]['type'];
|
|
} else {
|
|
//array_push($typearr,NULL);
|
|
$typearr[4] = NULL;
|
|
}
|
|
|
|
for($j=0;$j<4;$j++) {
|
|
$typearr[$j] = $typearr[$j+1];
|
|
}
|
|
|
|
switch($typearr[2]) {
|
|
case 'white_newline':
|
|
$after = '<br />';
|
|
$before = '';
|
|
break;
|
|
case 'punct_bracket_open_round':
|
|
$bracketlevel++;
|
|
$infunction = FALSE;
|
|
//make sure this array is sorted!
|
|
if( ($typearr[1] == 'alpha_functionName') || ($typearr[1] == 'alpha_columnType') || ($typearr[1] == 'punct') || ($typearr[3] == 'digit_integer') || ($typearr[3] == 'digit_hex') || ($typearr[3] == 'digit_float') || ( ( $typearr[0] == 'alpha_reservedWord' ) && ( PMA_STR_BinarySearchInArr(strtoupper($arr[$i-2]['data']),$keywordsWithBrackets,$keywordsWithBrackets_size))) ) {
|
|
$functionlevel++;
|
|
$infunction = TRUE;
|
|
$after .= ' ';
|
|
} else {
|
|
$indent++;
|
|
$after .= '<div class="syntax_indent'.$indent.'">'."\n";
|
|
}
|
|
break;
|
|
case 'punct_qualifier':
|
|
break;
|
|
case 'punct_listsep':
|
|
if($infunction == TRUE) {
|
|
$after .= $space_punct_listsep_functionName;
|
|
} else {
|
|
$after .= $space_punct_listsep;
|
|
}
|
|
break;
|
|
case 'punct_queryend':
|
|
if(($typearr[3] != 'white_newline') && ($typearr[3] != 'comment_mysql')&& ($typearr[3] != 'comment_ansi') ) {
|
|
$after .= '<br />'."\n";
|
|
}
|
|
break;
|
|
case 'comment':
|
|
break;
|
|
case 'punct_bracket_close_round':
|
|
$bracketlevel--;
|
|
if($infunction == TRUE) {
|
|
$functionlevel--;
|
|
$after .= ' ';
|
|
} else {
|
|
$indent--;
|
|
$before .= '</div>';
|
|
}
|
|
$infunction = ($functionlevel > 0) ? TRUE : FALSE;
|
|
break;
|
|
|
|
case 'alpha_reservedWord':
|
|
if( ($typearr[1] != 'alpha_reservedWord') && ($typearr[1] != 'punct_level_plus') && ($typearr[1] != 'white_newline')) {
|
|
$before .= $space_alpha_reservedWord;
|
|
}
|
|
|
|
switch(strtoupper($arr[$i]['data'])) {
|
|
case 'CREATE':
|
|
$space_punct_listsep = '<br />'."\n";
|
|
$space_alpha_reservedWord = ' ';
|
|
break;
|
|
case 'UPDATE':
|
|
$space_punct_listsep = '<br />'."\n";
|
|
$space_alpha_reservedWord = ' ';
|
|
break;
|
|
case 'INSERT':
|
|
$space_punct_listsep = '<br />'."\n";
|
|
$space_alpha_reservedWord = '<br />'."\n";
|
|
break;
|
|
case 'VALUES':
|
|
$space_punct_listsep = ' ';
|
|
$space_alpha_reservedWord = '<br />'."\n";
|
|
break;
|
|
case 'SELECT':
|
|
$space_punct_listsep = ' ';
|
|
$space_alpha_reservedWord = '<br />'."\n";
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
$after .= " ";
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if($typearr[3] != 'punct_qualifier') {
|
|
$after .= ' ';
|
|
}
|
|
$str .= $before.PMA_SQP_FormatHTML_colorize($arr[$i]).$after;
|
|
}
|
|
return $str;
|
|
}
|
|
|
|
} // $__PMA_SQP_LIB__
|