Initial commit

#pma/libraries/parse_analyze.lib.php

@@ -0,0 +1,68 @@
+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * Parse and analyse a SQL query
+ *
+ * @package PhpMyAdmin
+ */
+if (! defined('PHPMYADMIN')) {
+    exit;
+}
+
+/**
+ * Calls the parser on a query
+ *
+ * @param string $sql_query the query to parse
+ * @param string $db        the current database
+ *
+ * @return array
+ *
+ * @access  public
+ */
+function PMA_parseAnalyze($sql_query, $db)
+{
+    // @todo: move to returned results (also in all the calling chain)
+    $GLOBALS['unparsed_sql'] = $sql_query;
+
+    // Get details about the SQL query.
+    $analyzed_sql_results = SqlParser\Utils\Query::getAll($sql_query);
+
+    extract($analyzed_sql_results);
+    $table = '';
+
+    // If the targeted table (and database) are different than the ones that is
+    // currently browsed, edit `$db` and `$table` to match them so other elements
+    // (page headers, links, navigation panel) can be updated properly.
+    if (!empty($analyzed_sql_results['select_tables'])) {
+
+        // Previous table and database name is stored to check if it changed.
+        $prev_db = $db;
+
+        if (count($analyzed_sql_results['select_tables']) > 1) {
+
+            /**
+             * @todo if there are more than one table name in the Select:
+             * - do not extract the first table name
+             * - do not show a table name in the page header
+             * - do not display the sub-pages links)
+             */
+            $table = '';
+        } else {
+            $table = $analyzed_sql_results['select_tables'][0][0];
+            if (!empty($analyzed_sql_results['select_tables'][0][1])) {
+                $db = $analyzed_sql_results['select_tables'][0][1];
+            }
+        }
+        // There is no point checking if a reload is required if we already decided
+        // to reload. Also, no reload is required for AJAX requests.
+        if ((empty($reload)) && (empty($GLOBALS['is_ajax_request']))) {
+            // NOTE: Database names are case-insensitive.
+            $reload  = strcasecmp($db, $prev_db) != 0;
+        }
+
+        // Updating the array.
+        $analyzed_sql_results['reload'] = $reload;
+    }
+
+    return array($analyzed_sql_results, $db, $table);
+}