1 files changed, 61 insertions, 0 deletions
diff --git a/src/backup.cpp b/src/backup.cpp
new file mode 100644
index 0000000..76099b1
--- /dev/null
+++ b/src/backup.cpp
@@ -0,0 +1,61 @@
+//
+// Copyright (c) 2022 Klemens Morgenstern (klemens.morgenstern@gmx.net)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+
+#include <boost/sqlite/backup.hpp>
+#include <boost/sqlite/connection.hpp>
+
+BOOST_SQLITE_BEGIN_NAMESPACE
+
+
+void
+backup(connection & source,
+       connection & target,
+       cstring_ref source_name,
+       cstring_ref target_name,
+       system::error_code & ec,
+       error_info & ei)
+{
+  struct del
+  {
+    void operator()(sqlite3_backup * bp)
+    {
+      sqlite3_backup_finish(bp);
+    }
+  };
+
+  std::unique_ptr<sqlite3_backup, del> bu{
+      sqlite3_backup_init(target.handle(), target_name.c_str(),
+                          source.handle(), source_name.c_str())};
+  if (bu == nullptr)
+  {
+    BOOST_SQLITE_ASSIGN_EC(ec, sqlite3_errcode(target.handle()));
+    ei.set_message(sqlite3_errmsg(target.handle()));
+    return ;
+  }
+
+  const auto res = sqlite3_backup_step(bu.get(), -1);
+  if (SQLITE_DONE != res)
+    BOOST_SQLITE_ASSIGN_EC(ec, res);
+}
+
+
+void
+backup(connection & source,
+       connection & target,
+       cstring_ref source_name,
+       cstring_ref target_name)
+{
+  system::error_code ec;
+  error_info ei;
+  backup(source, target, source_name, target_name, ec, ei);
+  if (ec)
+    throw_exception(system::system_error(ec, ei.message()));
+}
+
+BOOST_SQLITE_END_NAMESPACE
+