lvm2/lib/config/config.h

/*
 * Copyright (C) 2001 Sistina Software (UK) Limited.
 *
 * This file is released under the LGPL.
 */

#ifndef _LVM_CONFIG_H
#define _LVM_CONFIG_H

#include <inttypes.h>

enum {
        CFG_STRING,
        CFG_FLOAT,
        CFG_INT,
	CFG_EMPTY_ARRAY
};

struct config_value {
        int type;
        union {
                int i;
                float r;
                char *str;
        } v;
        struct config_value *next; /* for arrays */
};

struct config_node {
        char *key;
        struct config_node *sib, *child;
        struct config_value *v;
};

struct config_file {
        struct config_node *root;
};

struct config_file *create_config_file(void);
void destroy_config_file(struct config_file *cf);

int read_config(struct config_file *cf, const char *file);
int write_config(struct config_file *cf, const char *file);

struct config_node *find_config_node(struct config_node *cn,
				     const char *path, char seperator);

const char *find_config_str(struct config_node *cn,
			    const char *path, char sep, const char *fail);

int find_config_int(struct config_node *cn, const char *path,
		    char sep, int fail);

float find_config_float(struct config_node *cn, const char *path,
			char sep, float fail);

/*
 * Understands (0, ~0), (y, n), (yes, no), (on,
 * off), (true, false).
 */
int find_config_bool(struct config_node *cn, const char *path,
		    char sep, int fail);



int get_config_uint32(struct config_node *cn, const char *path,
		      char sep, uint32_t *result);

int get_config_uint64(struct config_node *cn, const char *path,
		      char sep, uint64_t *result);

int get_config_str(struct config_node *cn, const char *path,
		   char sep, char **result);

#endif