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analyser and confirmation requests

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This commit is contained in:
Marc Delisle
2003-01-08 14:54:59 +00:00
parent afc3df07b8
commit 73099ed1e4
3 changed files with 65 additions and 8 deletions
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64
libraries/sqlparser.lib.php3
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@@ -567,6 +567,7 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
$size = $arr['len'];
$subresult = array(
'querytype' => '',
'queryflags' => array(),
'select_expr' => array(),
'table_ref' => array()
);
@@ -648,10 +649,10 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
);
$supported_query_types_cnt = count($supported_query_types);
// main loop for each token
// loop #1 for each token: select_expr, table_ref for SELECT
for ($i = 0; $i < $size; $i++) {
//echo "trace <b>" . $arr[$i]['data'] . "</b> (" . $arr[$i]['type'] . ")<br>";
//echo "trace 1<b>" . $arr[$i]['data'] . "</b> (" . $arr[$i]['type'] . ")<br>";
// High speed seek for locating the end of the current query
if ($seek_queryend == TRUE) {
@@ -828,8 +829,10 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
} // end if (save a select expr)
//=========================
//======================================
// s a v e a t a b l e r e f
//======================================
// maybe we just saw the end of table refs
// but the last table ref has to be saved
// or we are at the last token (TODO: there could be another
@@ -895,7 +898,7 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
} // end if (set the true names)
// e n d o f l o o p
// e n d i n g l o o p #1
// set the $previous_was_identifier to FALSE if the current
// token is not an identifier
if (($arr[$i]['type'] != 'alpha_identifier')
@@ -946,8 +949,7 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
$save_table_ref = FALSE;
} // end if
} // end for $i (main loop)
} // end for $i (loop #1)
// -------------------------------------------------------
// This is a big hunk of debugging code by Marc for this.
@@ -970,6 +972,56 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
*/
// -------------------------------------------------------
// loop #2: for queryflags
// and querytype (for queries != 'SELECT')
//
// This is not in the loop 1 to keep logic simple
$seen_reserved_word = FALSE;
for ($i = 0; $i < $size; $i++) {
//echo "trace 2<b>" . $arr[$i]['data'] . "</b> (" . $arr[$i]['type'] . ")<br>";
// c o n f i r m a t i o n r e q u e s t s
//
// check for reserved words that will have to generate
// a confirmation request later in sql.php3
// the cases are:
// DROP TABLE
// DROP DATABASE
// ALTER TABLE... DROP
// DELETE FROM...
//
// this code is not used for confirmations coming from functions.js
// TODO: check for punct_queryend
if ($arr[$i]['type'] == 'alpha_reservedWord') {
$upper_data = strtoupper($arr[$i]['data']);
if (!$seen_reserved_word) {
$first_reserved_word = $upper_data;
$subresult['querytype'] = $upper_data;
$seen_reserved_word = TRUE;
// if the first reserved word is DROP or DELETE,
// we know this is a query that needs to be confirmed
if ($first_reserved_word=='DROP'
|| $first_reserved_word == 'DELETE') {
$subresult['queryflags']['need_confirm'] = 1;
break;
}
} else {
if ($upper_data=='DROP' && $first_reserved_word=='ALTER') {
$subresult['queryflags']['need_confirm'] = 1;
break;
}
}
}
} // end for $i (loop #2)
// They are naughty and didn't have a trailing semi-colon,
// then still handle it properly
if ($subresult['querytype'] != '') {