/* ----------------------------------------------------------------------- *

 *   

 *  macros.h - header file for module to handle macro substitution

 *		variables for map entries.

 * 

 *   Copyright 2006 Ian Kent <raven@themaw.net>

 *

 *   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, Inc., 675 Mass Ave, Cambridge MA 02139,

 *   USA; either version 2 of the License, or (at your option) any later

 *   version; incorporated herein by reference.

 *

 * ----------------------------------------------------------------------- */

#ifndef MACROS_H

#define MACROS_H

#define MAX_MACRO_STRING	128

struct substvar {

	char *def;		/* Define variable */

	char *val;		/* Value to replace with */

	unsigned int readonly;	/* System vars are readonly */

	struct substvar *next;

};

void macro_init(void);

int macro_is_systemvar(const char *str, int len);

int macro_global_addvar(const char *str, int len, const char *value);

int macro_parse_globalvar(const char *define);

void macro_lock(void);

void macro_unlock(void);

struct substvar *

macro_addvar(struct substvar *table, const char *str, int len, const char *value);

void macro_global_removevar(const char *str, int len);

struct substvar *

macro_removevar(struct substvar *table, const char *str, int len);

void macro_free_global_table(void);

void macro_free_table(struct substvar *table);

const struct substvar *

macro_findvar(const struct substvar *table, const char *str, int len);

void macro_setenv(struct substvar *table);

#endif