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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2013 Olaf Wintermann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. 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.
 *
 * 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 AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 CFG_CONF_H
#define	CFG_CONF_H

#include <stdio.h>
#include <stdlib.h>

#include "../ucx/list.h"
#include "../ucx/dlist.h"
#include "../ucx/map.h"
#include "../ucx/mempool.h"
#include "../ucx/string.h"

#ifdef	__cplusplus
extern "C" {
#endif
   
// mempool malloc macro
#define OBJ_NEW(pool, type) (type*)ucx_mempool_malloc(pool, sizeof(type))
#define OBJ_NEW_N(pool, type) (type*)ucx_mempool_calloc(pool, 1, sizeof(type))

// line types
#define LINE_OTHER      0
#define LINE_DIRECTIVE  1
#define LINE_BEGIN_TAG  2
#define LINE_END_TAG    3
#define LINE_MULTI      4
#define LINE_NOCONTENT  5 // only comment or space
#define LINE_ERROR      6 // parse error on this line

// tag types
#define TAG_OBJECT      0
#define TAG_IF          1
#define TAG_ELSEIF      2
#define TAG_ELSE        3
#define TAG_CLIENT      4

typedef struct _cfg_line {
    sstr_t line;    // raw line string
    void   *object; // pointer to data struct
    int    type;    // type, see line types
} ConfigLine;

typedef int (*cfg_parse_f)(void *, ConfigLine *, ConfigLine *, sstr_t);

typedef struct _cfg_param {
    sstr_t     name;
    sstr_t     value;
} ConfigParam;

typedef struct _cfg_parser {
    UcxMempool    *mp;
    UcxDlist      *lines;
    cfg_parse_f   parse;
} ConfigParser;


typedef struct _conf_tag ConfigTag;
struct _conf_tag {
    ConfigLine *begin;
    ConfigLine *end;

    sstr_t     name;
    UcxList    *param;
    ConfigTag  *parent;
    ConfigTag  *iftag; // only used by <ElseIf> and <Else>
    int        type_num;
};

typedef struct _conf_directive {
    ConfigLine *begin;
    ConfigLine *end;

    sstr_t     directive_type;
    sstr_t     value;
    //UcxList    *param;
    ConfigTag  *condition;
    int        type_num;
} ConfigDirective;


int cfg_parse_basic_file(ConfigParser *parser, FILE *in);

sstr_t cfg_readln(FILE *file);

sstr_t cfg_trim_comment(sstr_t line);

sstr_t cfg_param(sstr_t params, sstr_t *name, sstr_t *value);

sstr_t cfg_param_get(UcxList *list, sstr_t name);

ConfigDirective* cfg_parse_directive(sstr_t line, UcxMempool *mp);

UcxList* cfg_param_list(sstr_t param_str, UcxMempool *mp);

int cfg_get_directive_type_num(sstr_t type);

int cfg_get_basic_type(sstr_t line);

int cfg_get_line_type(sstr_t line);

int cfg_get_tag_type(sstr_t tag);

sstr_t cfg_get_end_tag_name(sstr_t line);

ConfigTag* cfg_parse_begin_tag(sstr_t line, UcxMempool *mp);

ConfigDirective* cfg_directivelist_get(UcxDlist *dirs, sstr_t name);

sstr_t cfg_directivelist_get_str(UcxDlist *dirs, sstr_t name);

sstr_t cfg_directive_pstr1(ConfigDirective *dir);

void cfg_list_destr(UcxMempool *mp, UcxList *list);
void cfg_dlist_destr(UcxMempool *mp, UcxDlist *list);
void cfg_map_destr(UcxMempool *mp, UcxMap *map);
UcxList* cfg_list_append(UcxMempool *mp, UcxList *list, void *data);
UcxDlist* cfg_dlist_append(UcxMempool *mp, UcxDlist *list, void *data);

#ifdef	__cplusplus
}
#endif

#endif	/* CFG_CONF_H */