Index: plug_import.h
===================================================================
--- plug_import.h	(nonexistent)
+++ plug_import.h	(revision 2449)
@@ -0,0 +1,62 @@
+/*
+ *                            COPYRIGHT
+ *
+ *  PCB, interactive printed circuit board design
+ *  Copyright (C) 1994,1995,1996,1997,1998,2005,2006 Thomas Nau
+ *  Copyright (C) 2016 Tibor 'Igor2' Palinkas
+ *
+ *  This program 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.
+ *
+ *  This program 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 more 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *  Contact addresses for paper mail and Email:
+ *  Thomas Nau, Schlehenweg 15, 88471 Baustetten, Germany
+ *  Thomas.Nau@rz.uni-ulm.de
+ *
+ */
+
+#ifndef PCB_PLUG_IMPORT_H
+#define PCB_PLUG_IMPORT_H
+
+#include "global.h"
+#include "conf.h"
+
+/**************************** API definition *********************************/
+
+typedef enum plug_import_aspect_e { /* bitfield of aspects that can be imported */
+	IMPORT_ASPECT_NETLIST = 1
+} plug_import_aspect_t;
+
+typedef struct plug_import_s plug_import_t;
+struct plug_import_s {
+	plug_import_t *next;
+	void *plugin_data;
+
+	/* Check if the plugin supports format fmt. Return 0 if not supported or
+	   an integer priority if supported. The higher the prio is the more likely
+	   the plugin gets the next operation on the file. Base prio should be 100
+	   for native formats. Return non-0 only if all aspects are supported. */
+	int (*fmt_support_prio)(plug_import_t *ctx, unsigned int aspects, FILE *f, const char *filename);
+
+	/* Perform the import; return 0 on success */
+	int (*import)(plug_import_t *ctx, unsigned int aspects, const char *fn);
+};
+
+extern plug_import_t *plug_import_chain;
+
+/********** hook wrappers **********/
+int pcb_import(char *filename, unsigned int aspect);
+int ImportNetlist(char *);
+
+
+#endif