1 files changed, 20 insertions, 0 deletions
diff --git a/libbutl/prompt.hxx b/libbutl/prompt.hxx
new file mode 100644
index 0000000..90b8dbf
--- /dev/null
+++ b/libbutl/prompt.hxx
@@ -0,0 +1,20 @@
+// file      : libbutl/prompt.hxx -*- C++ -*-
+// license   : MIT; see accompanying LICENSE file
+
+#pragma once
+
+#include <string>
+
+#include <libbutl/export.hxx>
+
+namespace butl
+{
+  // The Y/N prompt. The def argument, if specified, should be either 'y' or
+  // 'n'. It is used as the default answer, in case the user just hits enter.
+  //
+  // Write the prompt to diag_stream. Throw ios_base::failure if no answer
+  // could be extracted from stdin (for example, because it was closed).
+  //
+  LIBBUTL_SYMEXPORT bool
+  yn_prompt (const std::string&, char def = '\0');
+}