121 Zeilen
3,9 KiB
PHP
121 Zeilen
3,9 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
class Msd_Sql_Parser
|
||
|
|
{
|
||
|
|
private $_rawQuery = null;
|
||
|
|
|
||
|
|
protected $_sqlStatements = array(
|
||
|
|
2 => array(
|
||
|
|
'do', 'xa'
|
||
|
|
),
|
||
|
|
3 => array(
|
||
|
|
'set', 'use'
|
||
|
|
),
|
||
|
|
4 => array(
|
||
|
|
'call', 'drop', 'help', 'kill', 'load', 'lock', 'show'
|
||
|
|
),
|
||
|
|
5 => array(
|
||
|
|
'alter', 'check', 'flush', 'grant', 'purge', 'reset', 'slave', 'start'
|
||
|
|
),
|
||
|
|
6 => array(
|
||
|
|
'backup', 'change', 'commit', 'create', 'delete', 'insert', 'rename', 'repair', 'revoke', 'select',
|
||
|
|
'unlock', 'update'
|
||
|
|
),
|
||
|
|
7 => array(
|
||
|
|
'analyze', 'execute', 'handler', 'install', 'preload', 'prepare', 'release', 'replace', 'restore'
|
||
|
|
),
|
||
|
|
8 => array(
|
||
|
|
'checksum', 'describe', 'optimize', 'keycache', 'rollback', 'truncate'
|
||
|
|
),
|
||
|
|
9 => array(
|
||
|
|
'savepoint', 'uninstall'
|
||
|
|
),
|
||
|
|
10 => array(
|
||
|
|
'deallocate'
|
||
|
|
),
|
||
|
|
);
|
||
|
|
|
||
|
|
protected $_sqlComments = array(
|
||
|
|
'--' => "\n", '/*' => '*/'
|
||
|
|
);
|
||
|
|
|
||
|
|
public function __construct($sqlQuery = null)
|
||
|
|
{
|
||
|
|
if ($sqlQuery !== null) {
|
||
|
|
$this->_rawQuery = $sqlQuery;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public function parse($sqlQuery = null)
|
||
|
|
{
|
||
|
|
if ($sqlQuery === null) {
|
||
|
|
if ($this->_rawQuery === null) {
|
||
|
|
include_once 'Msd/Sql/Parser/Exception.php';
|
||
|
|
throw new Msd_Sql_Parser_Exception('You must specify a MySQL query for parsing!');
|
||
|
|
}
|
||
|
|
|
||
|
|
$sqlQuery = $this->_rawQuery;
|
||
|
|
}
|
||
|
|
|
||
|
|
$sqlQuery = trim($sqlQuery);
|
||
|
|
|
||
|
|
$statementCounter = 0;
|
||
|
|
$startPos = 0;
|
||
|
|
while ($startPos < strlen($sqlQuery)) {
|
||
|
|
$statementCounter++;
|
||
|
|
$firstSpace = strpos($sqlQuery, ' ', $startPos);
|
||
|
|
$statement = trim(strtolower(substr($sqlQuery, $startPos, $firstSpace - $startPos)));
|
||
|
|
$lengthCheck = strlen($statement);
|
||
|
|
if ($lengthCheck == 0) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if ($lengthCheck == 1 || $statement{1} == ';' || $statement{1} == "\n") {
|
||
|
|
$startPos = $startPos + 1;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
$commentCheck = substr($statement, 0, 2);
|
||
|
|
if (array_key_exists($commentCheck, $this->_sqlComments)) {
|
||
|
|
$commentEnd = $this->_sqlComments[$commentCheck];
|
||
|
|
$startPos = strpos($sqlQuery, $commentEnd, $startPos) + strlen($commentEnd);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
$statementLength = strlen($statement);
|
||
|
|
if (!isset($this->_sqlStatements[$statementLength])) {
|
||
|
|
die("$statement\n");
|
||
|
|
}
|
||
|
|
if (!in_array($statement, $this->_sqlStatements[$statementLength])) {
|
||
|
|
include_once 'Msd/Sql/Parser/Exception.php';
|
||
|
|
throw new Msd_Sql_Parser_Exception("Unknown MySQL statement is found: '$statement'");
|
||
|
|
}
|
||
|
|
$parserClass = 'Msd_Sql_Parser_' . ucwords($statement);
|
||
|
|
$endPos = $this->_getStatementEndPos($sqlQuery, $startPos);
|
||
|
|
$completeStatement = trim(substr($sqlQuery, $startPos, $endPos - $startPos));
|
||
|
|
$startPos = $endPos + 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private function _getStatementEndPos($sqlQuery, $startPos = 0)
|
||
|
|
{
|
||
|
|
$nextString = strpos($sqlQuery, "'", $startPos);
|
||
|
|
$nextSemicolon = strpos($sqlQuery, ';', $startPos);
|
||
|
|
if ($nextString === false) {
|
||
|
|
if ($nextSemicolon === false) {
|
||
|
|
return strlen($sqlQuery);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $nextSemicolon;
|
||
|
|
}
|
||
|
|
|
||
|
|
while ($nextString < $nextSemicolon) {
|
||
|
|
$nextString = strpos($sqlQuery, "'", $nextString + 1);
|
||
|
|
$nextSemicolon = strpos($sqlQuery, ';', $nextString + 1);
|
||
|
|
$nextString = strpos($sqlQuery, "'", $nextString + 1);
|
||
|
|
if ($nextString === false) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $nextSemicolon;
|
||
|
|
}
|
||
|
|
}
|