/*
 * Copyright (c) 2014, The Linux Foundation. All rights reserved.

 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *        * Redistributions of source code must retain the above copyright
 *            notice, this list of conditions and the following disclaimer.
 *        * Redistributions in binary form must reproduce the above copyright
 *            notice, this list of conditions and the following disclaimer in the
 *            documentation and/or other materials provided with the distribution.
 *        * Neither the name of The Linux Foundation nor
 *            the names of its contributors may be used to endorse or promote
 *            products derived from this software without specific prior written
 *            permission.

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NON-INFRINGEMENT ARE DISCLAIMED.    IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


#ifndef __CONF_FILE_PARSER_H__
#define __CONF_FILE_PARSER_H__

#define MAX_LINE_LEN 512
#define MAX_UNIQ_KEYS 5
#define MAX_UNIQ_GRPS 10
#define TRUE 1
#define FALSE 0

struct key_value_pair_list
{
   char *key;
   char *value;
   key_value_pair_list *next;
};

struct group
{
    char *grp_name;
    unsigned int num_of_keys;
    unsigned int keys_hash_size;
    key_value_pair_list **list;
    group *grp_next;
};

struct group_table
{
    unsigned int grps_hash_size;
    unsigned int num_of_grps;
    group **grps_hash;
};

enum CONF_PARSE_ERRO_CODE
{
  PARSE_SUCCESS,
  INVALID_FILE_NAME,
  FILE_OPEN_FAILED,
  FILE_NOT_PROPER,
  MEMORY_ALLOC_FAILED,
  PARSE_FAILED,
};

unsigned int get_hash_code(const char *str);
group_table *get_key_file();
void free_strs(char **str_array);
void free_key_file(group_table *key_file);
char parse_load_file(group_table *key_file, const char *file);
char **get_grps(const group_table *key_file);
char **get_keys(const group_table *key_file, const char *grp);
char *get_value(const group_table *key_file, const char *grp,
                 const char *key);

#endif //__CONF_FILE_PARSER_H__