#ifndef _MODELEXT_PARSER_H
#define _MODELEXT_PARSER_H

#include "modelext_info.h"

/**
    modelext inline parse.

    modelext info tables are set to an certain memory address,
    which use to get data pointer you want.

    @param[in] modelext info address.
    @param[in] refer to MODELEXT_TYPE_
    @param[in] a memory space will be stored with description of modelext type.
    @return
        - @b address: the data pointer of result.
*/
static inline unsigned char *modelext_get_cfg(unsigned char *buf, unsigned int type, MODELEXT_HEADER **header)
{
#define MAGIC "MODELEXT"

    MODELEXT_HEADER *h = (MODELEXT_HEADER*)buf;
    MODELEXT_INFO *d = (MODELEXT_INFO*)(buf + sizeof(MODELEXT_HEADER));

    if(type >= MODELEXT_TYPE_MAX)
    {
            if(header)
            {
                *header = NULL;
            }
            return NULL;
    }

    if(memcmp(d->name, MAGIC, strlen(MAGIC)))
    {
        if(header)
        {
            *header = NULL;
        }
        return NULL;
    }

    MODELEXT_HEADER* h_tail = (MODELEXT_HEADER*)(buf + d->ext_bin_length);

    while(h->size)
    {
        if(h->type == type)
        {
            break;
        }
        else
        {
            h = (MODELEXT_HEADER*)(((char*)h) + h->size);
            if(h >= h_tail)
            {
                return NULL;
            }
        }
    }

    if(!h->size)
    {
        if(header)
        {
            *header = NULL;
        }
        return NULL;
    }

    if(header)
    {
        *header = h;
    }

    return (unsigned char*)(((unsigned char*)h) + sizeof(MODELEXT_HEADER));
}

#endif