libobs/util: Add DStr RAII helper class

..Could also add some super nifty stuff later on too.  However, I think
using std::string whenever possible is probably for the best.

libobs/util/dstr.hpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2014 Hugh Bailey <obs.jim@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#pragma once
+
+#include "dstr.h"
+
+class DStr {
+	dstr str;
+
+	DStr(DStr const&) = delete;
+	DStr &operator=(DStr const&) = delete;
+
+public:
+	inline DStr() {dstr_init(&str);}
+	inline DStr(DStr &&other)
+	{
+		dstr_move(&str, &other.str);
+	}
+
+	inline ~DStr() {dstr_free(&str);}
+
+	inline operator dstr*()             {return &str;}
+	inline operator const dstr*() const {return &str;}
+
+	inline operator char*()             {return str.array;}
+	inline operator const char*() const {return str.array;}
+
+	inline dstr *operator->()           {return &str;}
+};