config.h
/** \file
* Key/value parser until we have a proper config.
*
* Auto-parsed variables will be assigned when read.
* To create a configuration parameter:
* <code>
* CONFIG_INT( "name", variable, default_value );
* </code>
*/
/*
* Copyright (C) 2009 Trammell Hudson <hudson+ml@osresearch.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; 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.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef _config_h_
#define _config_h_
#define MAX_NAME_LEN 64
#define MAX_VALUE_LEN 60
struct config
{
// struct config * next;
char name[ MAX_NAME_LEN ];
char value[ MAX_VALUE_LEN ];
};
//extern struct config * global_config;
extern char *
config_value(
struct config * config,
const char * name
);
extern int
config_int(
struct config * config,
const char * name,
int def
);
extern int
config_parse_file(
const char * filename
);
extern int
config_save_file(
const char * filename
);
struct config_var;
//return false in this cbr to block the value from being changed
typedef int (*config_var_update_func)(struct config_var *, int old_value, int new_value);
/** Create an auto-parsed config variable */
struct config_var
{
const char * name;
//int type; //!< 0 == int, 1 == char *
int * value;
int default_value;
config_var_update_func update;
};
#ifdef MODULE
#define CONFIG_VAR_ATTR static
#else
#define CONFIG_VAR_ATTR
#endif
#define _CONFIG_VAR( NAME, TYPE_ENUM, TYPE, VAR, VALUE, UPDATE_CBR ) \
TYPE VAR = VALUE; \
CONFIG_VAR_ATTR struct config_var \
__attribute__((section(".config_vars"))) \
__config_##VAR = \
{ \
.name = NAME, \
/* .type = TYPE_ENUM, */ \
.value = (int*) &VAR, \
.default_value = (int) VALUE, \
.update = UPDATE_CBR, \
}
#define CONFIG_INT( NAME, VAR, VALUE ) \
_CONFIG_VAR( NAME, 0, int, VAR, VALUE, NULL )
#define CONFIG_INT_UPDATE( NAME, VAR, VALUE, UPDATE_CBR ) \
_CONFIG_VAR( NAME, 0, int, VAR, VALUE, UPDATE_CBR )
#define _CONFIG_ARRAY_ELEMENT( NAME, TYPE_ENUM, VAR, INDEX, VALUE ) \
struct config_var \
__attribute__((section(".config_vars"))) \
__config_##VAR##INDEX = \
{ \
.name = NAME, \
/* .type = TYPE_ENUM, */ \
.value = &(VAR[INDEX]), \
.default_value = VALUE, \
}
#define CONFIG_ARRAY_ELEMENT( NAME, VAR, INDEX, VALUE ) \
_CONFIG_ARRAY_ELEMENT( NAME, 0, VAR, INDEX, VALUE )
struct config_var* get_config_vars_start ();
struct config_var* get_config_vars_end ();
/* set a config var by name (returns true if change was successful) */
int set_config_var(const char * name, int new_value);
/* set a config var by pointer (for menu backend) */
int set_config_var_ptr(int* ptr, int new_value);
/* lookup a config var by name */
int get_config_var(const char * name);
/* return the current settings directory (usually ML/SETTINGS, but not if you use a custom preset) */
extern char* get_config_dir();
void config_save();
void config_save_at_shutdown();
void config_load();
#endif