From c5eb1148b99cf88555c0a516e1218bdb74ab0080 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Tue, 1 May 2007 04:01:04 +0000
Subject: Converted Raul (and thus Ingen and Machina) to use Redland over
 Raptor/Rasqal independently. Fixed patch loading for Ingen (local only, still
 something wrong with remote...).

git-svn-id: http://svn.drobilla.net/lad/raul@486 a436a847-0d15-0410-975c-d299462d15a1
---
 raul/AtomRedland.h | 107 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 raul/AtomRedland.h

(limited to 'raul/AtomRedland.h')

diff --git a/raul/AtomRedland.h b/raul/AtomRedland.h
new file mode 100644
index 0000000..ae4e3b4
--- /dev/null
+++ b/raul/AtomRedland.h
@@ -0,0 +1,107 @@
+/* This file is part of Raul.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Raul is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ * 
+ * Raul is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef RAUL_ATOM_REDLAND_H
+#define RAUL_ATOM_REDLAND_H
+
+#include <iostream>
+#include <sstream>
+#include <cstring>
+#include <librdf.h>
+#include "raul/Atom.h"
+using std::cerr; using std::endl;
+
+#define U(x) ((const unsigned char*)(x))
+
+namespace Raul {
+
+
+/** Support for serializing an Atom to/from RDF (via librdf).
+ *
+ * (Here to prevent a unnecessary reddland dependency for Atom).
+ * 
+ * \ingroup raul
+ */
+class AtomRedland {
+public:
+	/** Set this atom's value to the object (value) portion of an RDF triple.
+	 *
+	 * Caller is responsible for calling free(triple->object).
+	 */
+	static librdf_node* atom_to_rdf_node(librdf_world* world,
+	                                     const Atom&   atom)
+	{
+		std::ostringstream os;
+
+		librdf_uri*  type = NULL;
+		librdf_node* node = NULL;
+		std::string  str;
+
+		switch (atom.type()) {
+		case Atom::INT:
+			os << atom.get_int32();
+			str = os.str();
+			// xsd:integer -> pretty integer literals in Turtle
+			type = librdf_new_uri(world, U("http://www.w3.org/2001/XMLSchema#integer"));
+			break;
+		case Atom::FLOAT:
+			os << atom.get_float();
+			str = os.str();
+			// xsd:decimal -> pretty decimal (float) literals in Turtle
+			type = librdf_new_uri(world, U("http://www.w3.org/2001/XMLSchema#decimal"));
+			break;
+		case Atom::STRING:
+			str = atom.get_string();
+			break;
+		case Atom::BLOB:
+		case Atom::NIL:
+		default:
+			cerr << "WARNING: Unserializable Atom!" << endl;
+		}
+		
+		if (str != "")
+			node = librdf_new_node_from_typed_literal(world, U(str.c_str()), NULL, type);
+
+		return node;
+	}
+
+#if 0
+	static Atom node_to_atom(librdf_node* node) {
+		/*switch (type) {
+		case 'i':
+			return Atom(arg->i);
+		case 'f':
+			return Atom(arg->f);
+		case 's':
+			return Atom(&arg->s);
+		//case 'b'
+			// FIXME: How to get a blob from a lo_arg?
+			//return Atom(arg->b);
+		default:
+			return Atom();
+		}*/
+		cerr << "FIXME: node_to_atom\n";
+		return Atom();
+	}
+#endif
+
+};
+
+
+} // namespace Raul
+
+#endif // RAUL_ATOM_REDLAND_H
-- 
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