nestlog: + quoted_char inserter

include/nestlog/quoted_char.hpp

@@ -0,0 +1,43 @@
+/* @file quoted_char.hpp */
+
+#pragma once
+
+#include <iostream>
+
+namespace xo {
+    template<typename CharT>
+    class quoted_char {
+    public:
+        quoted_char(CharT ch) : ch_{ch} {}
+
+        void print(std::ostream & os) const {
+            switch(ch_) {
+            case '\033':
+                os << "\\033";
+                break;
+            case '\n':
+                os << "\\n";
+                break;
+            case '\r':
+                os << "\\r";
+                break;
+            default:
+                os << ch_;
+            }
+        }
+
+    private:
+        CharT ch_;
+    }; /*quoted_char*/
+
+    template<typename CharT>
+    inline std::ostream &
+    operator<<(std::ostream & os, quoted_char<CharT> const & x) {
+        x.print(os);
+        return os;
+    } /*operator<<*/
+
+} /*namespace xo*/
+
+
+/* end quoted_char.hpp */