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/* wrapper/plugins.h -- struct definitions and basic functions for rvs plugins
   system depends: this file is truly system-independant
   Copyright (C) 2009 Luke Shumaker
   
   This file is part of rvs.
   
   rvs 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, or (at your
   option) any later version.
   
   rvs 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 rvs; see the file COPYING.
   If not, write to the Free Software Foundation,
   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef FILE_plugins_h_SEEN
#define FILE_plugins_h_SEEN

#include "rvs.h"

/* a plugin */
/* a generic binary tree emulating a n-ary tree via linked list */
struct plugin
{
	char *name;
	struct plugin_command *commands;/* left  leaf */
	struct plugin         *next;    /* right leaf */
};

/* a single plugin command */
struct plugin_command
{
	/* node */
	char *name;
	struct plugin         *plugin; /* which plugin does it belong to? */
	struct plugin_command *depend; /* what does this depend on? */
	char                  *depends;/* what does this depend on? (string) */
	
	/* linked list */
	struct plugin_command *next;
	
	/* depends, linked list */
	/* for a dependancy tree, this seems like it should be a    *\
	\* separate struct, but this is the simplest way.           */
	struct plugin_command *d_child;
	struct plugin_command *d_next;
};

/* create a blank plugin_command */
extern
struct plugin_command *
plugin_mk_command();

extern
void
plugin_free_command(struct plugin_command *command);

extern
void
plugin_free_plugin(struct plugin *plugin);

#endif