1 files changed, 81 insertions, 0 deletions
diff --git a/src/extension/db.h b/src/extension/db.h
new file mode 100644
index 000000000..264e76539
--- /dev/null
+++ b/src/extension/db.h
@@ -0,0 +1,81 @@
+/*
+ * Functions to keep a listing of all modules in the system.  Has its
+ * own file mostly for abstraction reasons, but is pretty simple
+ * otherwise.
+ *
+ * Authors:
+ *   Ted Gould <ted@gould.cx>
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 2002-2004 Authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifndef __MODULES_DB_H__
+#define __MODULES_DB_H__
+
+#include <map>
+#include <list>
+
+#include "extension/extension.h"
+
+namespace Inkscape {
+namespace Extension {
+
+class DB {
+private:
+    /** A string comparison function to be used in the moduledict
+        to find the different extensions in the hash map. */
+    struct ltstr {
+        bool operator()(const char* s1, const char* s2) const {
+            return strcmp(s1, s2) < 0;
+        }
+    };
+    /** This is the actual database.  It has all of the modules in it,
+        indexed by their ids.  It's a hash table for faster lookups */
+    std::map <const char *, Extension *, ltstr> moduledict;
+    /** Maintain an ordered list of modules for generating the extension
+        lists via "foreach" */
+    std::list <Extension *> modulelist;
+
+    static void foreach_internal (gpointer in_key, gpointer in_value, gpointer in_data);
+
+public:
+    DB (void);
+    Extension * get (const gchar *key);
+    void register_ext (Extension *module);
+    void unregister_ext (Extension *module);
+    void foreach (void (*in_func)(Extension * in_plug, gpointer in_data), gpointer in_data);
+
+private:
+    static void input_internal (Extension * in_plug, gpointer data);
+    static void output_internal (Extension * in_plug, gpointer data);
+    static void effect_internal (Extension * in_plug, gpointer data);
+
+public:
+    typedef std::list<Output *> OutputList;
+    typedef std::list<Input *> InputList;
+    typedef std::list<Effect *> EffectList;
+
+    InputList  &get_input_list (InputList &ou_list);
+    OutputList &get_output_list (OutputList &ou_list);
+    EffectList &get_effect_list (EffectList &ou_list);
+}; /* class DB */
+
+extern DB db;
+
+} } /* namespace Extension, Inkscape */
+
+#endif /* __MODULES_DB_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:encoding=utf-8:textwidth=99 :