Flatten ingen source directory heirarchy a bit.

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@1551 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 90 insertions, 0 deletions

diff --git a/src/module/Module.cpp b/src/module/Module.cpp
new file mode 100644
index 00000000..8d1399b1
--- /dev/null
+++ b/src/module/Module.cpp
@@ -0,0 +1,90 @@
+/* This file is part of Ingen.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Ingen 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.
+ * 
+ * Ingen 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
+ */
+
+#include <string>
+#include <sstream>
+#include <iostream>
+#include <glibmm/module.h>
+#include <glibmm/miscutils.h>
+#include <glibmm/fileutils.h>
+#include <raul/SharedPtr.hpp>
+
+#ifndef INGEN_MODULE_DIR
+#error This file expects INGEN_MODULE_DIR to be defined.
+#endif
+
+using namespace std;
+
+namespace Ingen {
+namespace Shared {
+
+
+/** Load a dynamic module from the default path.
+ *
+ * This will check in the directories specified in the environment variable
+ * INGEN_MODULE_PATH (typical colon delimited format), then the default module
+ * installation directory (ie /usr/local/lib/ingen), in that order.
+ *
+ * \param name The base name of the module, e.g. "ingen_serialisation"
+ */
+SharedPtr<Glib::Module>
+load_module(const string& name)
+{
+	Glib::Module* module = NULL;
+
+	// Search INGEN_MODULE_PATH first
+	bool module_path_found;
+	string module_path = Glib::getenv("INGEN_MODULE_PATH", module_path_found);
+	if (module_path_found) {
+		string dir;
+		istringstream iss(module_path);
+		while (getline(iss, dir, ':')) {
+			
+			string filename = Glib::Module::build_path(dir, name);
+			if (Glib::file_test(filename, Glib::FILE_TEST_EXISTS)) {
+				module = new Glib::Module(filename, Glib::MODULE_BIND_LAZY);
+
+				if (*module) {
+					cerr << "Loaded module \"" <<  name << "\" from " << filename << endl;
+					return SharedPtr<Glib::Module>(module);
+				} else {
+					delete module;
+					cerr << Glib::Module::get_last_error() << endl;
+				}
+			}
+		}
+	}
+
+	// Try default directory if not found
+	module = new Glib::Module(
+			Glib::Module::build_path(INGEN_MODULE_DIR, name),
+            Glib::MODULE_BIND_LAZY);
+
+	if (*module) {
+		cerr << "Loaded module \"" <<  name << "\" from " << INGEN_MODULE_DIR << endl;
+		return SharedPtr<Glib::Module>(module);
+	} else {
+		cerr << "Unable to load module \"" <<  name << "\", is Ingen installed?" << endl
+			<< "Use ./ingen.dev to run from the source tree." << endl;
+		return SharedPtr<Glib::Module>();
+	}
+}
+
+
+} // namespace Shared
+} // namespace Ingen
+