Begin converting URL struct into modern C++ class

dlib/dlib.cc

@@ -538,6 +538,23 @@ const char *dStr_printable(Dstr *in, int maxlen)
    return out->str;
 }
 
+extern "C++"
+{
+#include <Alepha/AutoRAII.h>
+}
+
+std::string
+dStr_printable_std(const std::string &in, const int maxlen)
+{
+	const auto wrapped= Alepha::AutoRAII
+	{
+		[&]{ return dStr_new( in.c_str() ); },
+		[]( auto d ) { dStr_free( d, true ); }
+	};
+
+	return dStr_printable( wrapped, maxlen );
+}
+
 /*
  *- dList ---------------------------------------------------------------------
  */

dlib/dlib.h

@@ -124,6 +124,13 @@ void dStr_sprintfa (Dstr *ds, const char *format, ...);
 int  dStr_cmp(Dstr *ds1, Dstr *ds2);
 char *dStr_memmem(Dstr *haystack, Dstr *needle);
 const char *dStr_printable(Dstr *in, int maxlen);
+#ifdef __cplusplus
+extern "C++"
+{
+#include <string>
+}
+std::string dStr_printable_std(const std::string &in, int maxlen);
+#endif
 
 /*
  *-- dList --------------------------------------------------------------------