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+/* 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
+ */
+
+/** @file Conversion from Raul Atom to Redlandmm RDF Node and vice-versa.
+ * This header depends on redlandmm, only apps which directly depend on
+ * both raul and redlandmm should include it.
+ */
+
+#ifndef RAUL_ATOM_RDF_HPP
+#define RAUL_ATOM_RDF_HPP
+
+#include <cstring>
+#include <string>
+#include <sstream>
+
+#include CONFIG_H_PATH
+
+#include <redlandmm/Node.hpp>
+#include <redlandmm/World.hpp>
+
+#define CUC(x) ((const unsigned char*)(x))
+
+namespace Raul {
+namespace AtomRDF {
+
+inline Atom
+node_to_atom(const Redland::Node& node)
+{
+ if (node.type() == Redland::Node::RESOURCE)
+ return Atom(node.to_c_string());
+ else if (node.is_float())
+ return Atom(node.to_float());
+ else if (node.is_int())
+ return Atom(node.to_int());
+ else if (node.is_bool())
+ return Atom(node.to_bool());
+ else
+ return Atom(node.to_c_string());
+}
+
+
+inline Redland::Node
+atom_to_node(Redland::World& world, const Atom& atom)
+{
+ std::ostringstream os;
+ std::string str;
+ librdf_uri* type = NULL;
+ librdf_node* node = NULL;
+
+ 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.world(), CUC("http://www.w3.org/2001/XMLSchema#integer"));
+ break;
+ case Atom::FLOAT:
+ os.precision(20);
+ os << atom.get_float();
+ str = os.str();
+ // xsd:decimal -> pretty decimal (float) literals in Turtle
+ type = librdf_new_uri(world.world(), CUC("http://www.w3.org/2001/XMLSchema#decimal"));
+ break;
+ case Atom::BOOL:
+ // xsd:boolean -> pretty boolean literals in Turtle
+ if (atom.get_bool())
+ str = "true";
+ else
+ str = "false";
+ type = librdf_new_uri(world.world(), CUC("http://www.w3.org/2001/XMLSchema#boolean"));
+ break;
+ case Atom::STRING:
+ str = atom.get_string();
+ break;
+ case Atom::BLOB:
+ case Atom::NIL:
+ default:
+ std::cerr << "WARNING: Unserializable Atom!" << std::endl;
+ }
+
+ if (str != "")
+ node = librdf_new_node_from_typed_literal(world.world(), CUC(str.c_str()), NULL, type);
+
+ return Redland::Node(world, node);
+}
+
+
+} // namespace AtomRDF
+} // namespace Raul
+
+#endif // RAUL_ATOM_RDF_HPP
+