Initial commit

2022-11-21 09:47:28 +01:00
commit 76cec83d26
11652 changed files with 1980467 additions and 0 deletions
--- a/#pma/libraries/sql-parser/src/Utils/Misc.php
+++ b/#pma/libraries/sql-parser/src/Utils/Misc.php
@ -0,0 +1,113 @@
+<?php
+
+/**
+ * Miscellaneous utilities.
+ *
+ * @package    SqlParser
+ * @subpackage Utils
+ */
+namespace SqlParser\Utils;
+
+use SqlParser\Components\Expression;
+use SqlParser\Statements\SelectStatement;
+
+/**
+ * Miscellaneous utilities.
+ *
+ * @category   Misc
+ * @package    SqlParser
+ * @subpackage Utils
+ * @license    https://www.gnu.org/licenses/gpl-2.0.txt GPL-2.0+
+ */
+class Misc
+{
+
+    /**
+     * Gets a list of all aliases and their original names.
+     *
+     * @param SelectStatement $statement The statement to be processed.
+     * @param string          $database  The name of the database.
+     *
+     * @return array
+     */
+    public static function getAliases($statement, $database)
+    {
+        if (!($statement instanceof SelectStatement)
+            || (empty($statement->expr))
+            || (empty($statement->from))
+        ) {
+            return array();
+        }
+
+        $retval = array();
+
+        $tables = array();
+
+        /**
+         * Expressions that may contain aliases.
+         * These are extracted from `FROM` and `JOIN` keywords.
+         *
+         * @var Expression[] $expressions
+         */
+        $expressions = $statement->from;
+
+        // Adding expressions from JOIN.
+        if (!empty($statement->join)) {
+            foreach ($statement->join as $join) {
+                $expressions[] = $join->expr;
+            }
+        }
+
+        foreach ($expressions as $expr) {
+            if ((!isset($expr->table)) || ($expr->table === '')) {
+                continue;
+            }
+
+            $thisDb = ((isset($expr->database)) && ($expr->database !== '')) ?
+                $expr->database : $database;
+
+            if (!isset($retval[$thisDb])) {
+                $retval[$thisDb] = array(
+                    'alias' => null,
+                    'tables' => array(),
+                );
+            }
+
+            if (!isset($retval[$thisDb]['tables'][$expr->table])) {
+                $retval[$thisDb]['tables'][$expr->table] = array(
+                    'alias' => ((isset($expr->alias)) && ($expr->alias !== '')) ?
+                        $expr->alias : null,
+                    'columns' => array(),
+                );
+            }
+
+            if (!isset($tables[$thisDb])) {
+                $tables[$thisDb] = array();
+            }
+            $tables[$thisDb][$expr->alias] = $expr->table;
+        }
+
+        foreach ($statement->expr as $expr) {
+            if ((!isset($expr->column)) || ($expr->column === '')
+                || (!isset($expr->alias)) || ($expr->alias === '')
+            ) {
+                continue;
+            }
+
+            $thisDb = ((isset($expr->database)) && ($expr->database !== '')) ?
+                $expr->database : $database;
+
+            if ((isset($expr->table)) && ($expr->table !== '')) {
+                $thisTable = isset($tables[$thisDb][$expr->table]) ?
+                    $tables[$thisDb][$expr->table] : $expr->table;
+                $retval[$thisDb]['tables'][$thisTable]['columns'][$expr->column] = $expr->alias;
+            } else {
+                foreach ($retval[$thisDb]['tables'] as &$table) {
+                    $table['columns'][$expr->column] = $expr->alias;
+                }
+            }
+        }
+
+        return $retval;
+    }
+}