1 files changed, 31 insertions, 0 deletions
diff --git a/src/ios_save.hh b/src/ios_save.hh
new file mode 100644
index 0000000..1abcf53
--- /dev/null
+++ b/src/ios_save.hh
@@ -0,0 +1,31 @@
+// -*- mode: c++; c-basic-offset: 2; -*-
+
+#ifndef IOS_SAVE_HH
+#define IOS_SAVE_HH
+
+#include <ostream>
+
+class ios_save {
+public:
+  ios_save(std::ostream& ostream)
+    : ostream_(ostream), save_(nullptr) {
+    save_.copyfmt(ostream);
+  }
+
+  ios_save(ios_save const& save)
+    : ostream_(save.ostream_), save_(nullptr) {
+    save_.copyfmt(save.save_);
+  }
+
+  ~ios_save() {
+    ostream_.copyfmt(save_);
+  }
+
+  ios_save& operator=(ios_save const&) = delete;
+
+private:
+  std::ostream& ostream_;
+  std::ios save_;
+};
+
+#endif  // IOS_SAVE_HH