1 files changed, 121 insertions, 0 deletions
diff --git a/libedsio/library.c b/libedsio/library.c
new file mode 100755
index 0000000..f13193c
--- /dev/null
+++ b/libedsio/library.c
@@ -0,0 +1,121 @@
+/* -*-Mode: C;-*-
+ * $Id: library.c 1.1 Sun, 28 Jan 2007 10:02:26 -0800 jmacd $
+ *
+ * Copyright (C) 1998, 1999, Josh MacDonald.
+ * All Rights Reserved.
+ *
+ * Author: Josh MacDonald <jmacd@CS.Berkeley.EDU>
+ */
+
+#include "edsio.h"
+#include <gmodule.h>
+
+typedef struct _Library Library;
+
+struct _Library {
+  const char* name;
+  const char* libname;
+  gint        index;
+  gboolean    loaded;
+};
+
+static Library known_libraries[] = {
+  { "xd",      "xdelta",  3 },
+  { "edsio",   "edsio",   6 },
+};
+
+static GHashTable* loaded_libraries;
+
+static void
+edsio_library_init ()
+{
+  if (! loaded_libraries)
+    {
+      gint i;
+      gint n = sizeof (known_libraries) / sizeof (Library);;
+
+      loaded_libraries = g_hash_table_new (g_int_hash, g_int_equal);
+
+      for (i = 0; i < n; i += 1)
+	{
+	  Library* lib = known_libraries + i;
+
+	  g_hash_table_insert (loaded_libraries, & lib->index, lib);
+	}
+    }
+}
+
+void
+edsio_library_register (guint32 number, const char* name)
+{
+  Library* lib;
+
+  edsio_library_init ();
+
+  lib = g_hash_table_lookup (loaded_libraries, & number);
+
+  if (lib)
+    {
+      lib->loaded = TRUE;
+      return;
+    }
+
+  lib = g_new0 (Library, 1);
+
+  lib->index = number;
+  lib->name = name;
+  lib->loaded = TRUE;
+
+  g_hash_table_insert (loaded_libraries, & lib->index, lib);
+}
+
+gboolean
+edsio_library_check (guint32 number)
+{
+  Library* lib;
+
+  edsio_library_init ();
+
+  lib = g_hash_table_lookup (loaded_libraries, & number);
+
+  if (lib)
+    {
+      lib->loaded = TRUE;
+      return TRUE;
+    }
+
+#if 0
+  if (lib->libname && g_module_supported ())
+    {
+      GModule *module;
+      GString *module_name = g_string_new (NULL);
+      GString *symbol_name = g_string_new (NULL);
+      gboolean (* init) (void);
+
+      if (! (module = g_module_open (module_name->str, 0)))
+	{
+	  edsio_generate_stringstring_event (EC_EdsioGModuleError, module_name->str, g_module_error ());
+	  return FALSE;
+	}
+
+      if (! g_module_symbol (module,
+			     symbol_name->str,
+			     (void**) & init))
+	{
+	  edsio_generate_stringstring_event (EC_EdsioGModuleError, g_module_name (module), g_module_error ());
+	  return FALSE;
+	}
+
+      g_module_make_resident (module);
+
+      g_module_close (module);
+
+      lib->loaded = TRUE;
+
+      return (* init) ();
+    }
+#endif
+
+  edsio_generate_int_event (EC_EdsioUnregisteredLibrary, number);
+  return FALSE;
+}