Add project files.

Extensions/DatabaseExtensions.cs

@@ -0,0 +1,29 @@
+using DbTools.Model;
+using System.Collections.Generic;
+using System.Text;
+
+namespace DbTools {
+    internal static class DatabaseExtensions {
+
+        public static string ExportSql(this Database db) {
+            StringBuilder sb = new StringBuilder();
+            foreach (var table in db.Tables.GetTables()) {
+                sb.AppendLine(table.FullSql());
+            }
+            return sb.ToString();
+        }
+
+        public static void ImportFromSqlite(this Database db) {
+
+        }
+
+        public static string[] GetAllIndexes(this Database db) {
+            List<string> indexes = new List<string>();
+            foreach (var table in db.Tables.GetTables()) {
+                indexes.AddRange(table.Indexes.Keys);
+            }
+            return indexes.ToArray();
+        }
+
+    }
+}