json.h

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/*
 * Copyright (C) 2013 Teluu Inc. (http://www.teluu.com)
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#ifndef __PJLIB_UTIL_JSON_H__
#define __PJLIB_UTIL_JSON_H__
 
 
#include <pj/types.h>
#include <pj/list.h>
#include <pj/pool.h>
 
PJ_BEGIN_DECL
 
typedef enum pj_json_val_type
{
    PJ_JSON_VAL_NULL,           
    PJ_JSON_VAL_BOOL,           
    PJ_JSON_VAL_NUMBER,         
    PJ_JSON_VAL_STRING,         
    PJ_JSON_VAL_ARRAY,          
    PJ_JSON_VAL_OBJ             
} pj_json_val_type;
 
/* Forward declaration for JSON element */
typedef struct pj_json_elem pj_json_elem;
 
typedef struct pj_json_list
{
    PJ_DECL_LIST_MEMBER(pj_json_elem);
} pj_json_list;
 
struct pj_json_elem
{
    PJ_DECL_LIST_MEMBER(pj_json_elem);
    pj_str_t            name;           
    pj_json_val_type    type;           
    union
    {
        pj_bool_t       is_true;        
        float           num;            
        pj_str_t        str;            
        pj_json_list    children;       
    } value;                            
};
 
typedef struct pj_json_err_info
{
    unsigned    line;           
    unsigned    col;            
    int         err_char;       
} pj_json_err_info;
 
typedef pj_status_t (*pj_json_writer)(const char *s,
                                      unsigned size,
                                      void *user_data);
 
PJ_DECL(void) pj_json_elem_null(pj_json_elem *el, pj_str_t *name);
 
PJ_DECL(void) pj_json_elem_bool(pj_json_elem *el, pj_str_t *name,
                                pj_bool_t val);
 
PJ_DECL(void) pj_json_elem_number(pj_json_elem *el, pj_str_t *name,
                                  float val);
 
PJ_DECL(void) pj_json_elem_string(pj_json_elem *el, pj_str_t *name,
                                  pj_str_t *val);
 
PJ_DECL(void) pj_json_elem_array(pj_json_elem *el, pj_str_t *name);
 
PJ_DECL(void) pj_json_elem_obj(pj_json_elem *el, pj_str_t *name);
 
PJ_DECL(void) pj_json_elem_add(pj_json_elem *el, pj_json_elem *child);
 
PJ_DECL(pj_json_elem*) pj_json_parse(pj_pool_t *pool,
                                     char *buffer,
                                     unsigned *size,
                                     pj_json_err_info *err_info);
 
PJ_DECL(pj_status_t)   pj_json_write(const pj_json_elem *elem,
                                     char *buffer, unsigned *size);
 
PJ_DECL(pj_status_t)   pj_json_writef(const pj_json_elem *elem,
                                      pj_json_writer writer,
                                      void *user_data);
 
PJ_END_DECL
 
#endif  /* __PJLIB_UTIL_JSON_H__ */