1 files changed, 29 insertions, 0 deletions
diff --git a/src/include/object_fmt.h b/src/include/object_fmt.h
new file mode 100644
index 000000000..33df5e3fb
--- /dev/null
+++ b/src/include/object_fmt.h
@@ -0,0 +1,29 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+#pragma once
+
+/**
+ * \file fmtlib formatters for some object.h structs
+ */
+#include <fmt/format.h>
+
+#include "object.h"
+
+
+template <>
+struct fmt::formatter<snapid_t> {
+
+  constexpr auto parse(format_parse_context& ctx) { return ctx.begin(); }
+
+  template <typename FormatContext>
+  auto format(const snapid_t& snp, FormatContext& ctx) const
+  {
+    if (snp == CEPH_NOSNAP) {
+      return fmt::format_to(ctx.out(), "head");
+    }
+    if (snp == CEPH_SNAPDIR) {
+      return fmt::format_to(ctx.out(), "snapdir");
+    }
+    return fmt::format_to(ctx.out(), "{:x}", snp.val);
+  }
+};