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diff --git a/src/extension/loader.h b/src/extension/loader.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * Loader for external plug-ins.
+ *//*
+ *
+ * Authors:
+ *   Moritz Eberl <moritz@semiodesk.com>
+ *
+ * Copyright (C) 2016 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef INKSCAPE_EXTENSION_LOADER_H_
+#define INKSCAPE_EXTENSION_LOADER_H_
+
+#include "extension.h"
+
+
+namespace Inkscape {
+
+namespace XML {
+class Document;
+}
+
+namespace Extension {
+
+/** This class contains the mechanism to load c++ plugins dynamically.
+*/
+class Loader {
+
+public:
+    /**
+     * Sets a base directory where to look for the actual plugin to load.
+     *
+     * @param dir is the path where the plugin should be loaded from.
+     */
+    void set_base_directory(std::string const &dir) {
+        _baseDirectory = dir;
+    }
+
+    /**
+     * Loads plugin dependencies which are needed for the plugin to load.
+     *
+     * @param dep
+     */
+    bool load_dependency(Dependency *dep);
+
+    /**
+     * Load the actual implementation of a plugin supplied by the plugin.
+     *
+     * @param doc The xml representation of the INX extension configuration.
+     * @return The implementation of the extension loaded from the plugin.
+     */
+    Implementation::Implementation *load_implementation(Inkscape::XML::Document *doc);
+
+private:
+    std::string _baseDirectory; /**< The base directory to load a plugin from */
+
+
+};
+
+} // namespace Extension
+} // namespace Inkscape */
+
+#endif // _LOADER_H_
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace .0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim:filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99: