user.c

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/**
 * \file
 *
 * \author  Georg Hopp
 *
 * \copyright
 * Copyright © 2012  Georg Hopp
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#include "user.h"
#include "uuid.h"
#include "class.h"

#include "interface/serializable.h"
#include "interface/indexable.h"

#include "utils/memory.h"


static
int
userCtor(void * _this, va_list * params)
{
    User   this     = _this;
    char * username = va_arg(* params, char *);

    if (NULL != username) {
        size_t   nusername  = va_arg(* params, size_t);
        char   * email      = va_arg(* params, char *);
        size_t   nemail     = va_arg(* params, size_t);
        char   * firstname  = va_arg(* params, char *);
        size_t   nfirstname = va_arg(* params, size_t);
        char   * surname    = va_arg(* params, char *);
        size_t   nsurname   = va_arg(* params, size_t);

        size_t storage_size = 
            nusername + 1 +
            nemail + 1 +
            nfirstname + 1 +
            nsurname + 1 +
            4 * sizeof(size_t);

        this->username = memMalloc(storage_size);
        memcpy(this->username, username, nusername);
        this->username[nusername] = '\0';

        this->email = this->username + nusername + 1;
        memcpy(this->email, email, nemail);
        this->email[nemail] = '\0';

        this->firstname = this->email + nemail + 1;
        memcpy(this->firstname, firstname, nfirstname);
        this->firstname[nfirstname] = '\0';

        this->surname = this->firstname + nfirstname + 1;
        memcpy(this->surname, surname, nsurname);
        this->surname[nsurname] = '\0';

        this->nusername  = (size_t *)(this->surname + nsurname + 1);
        *this->nusername = nusername;

        this->nemail  = this->nusername + 1;
        *this->nemail = nemail;

        this->nfirstname  = this->nemail + 1;
        *this->nfirstname = nfirstname;

        this->nsurname  = this->nfirstname + 1;
        *this->nsurname = nsurname;
    }

    return 0;
}

static
void
userDtor(void * _this)
{
    User this = _this;

    if (NULL != this->username) {
        MEM_FREE(this->username);
    }
}

static
void
userSerialize(
        void           * _this,
        unsigned char ** serialized,
        size_t         * nserialized)
{
    User this = _this;

    *nserialized =
        *this->nusername + 1 +
        *this->nemail + 1 +
        *this->nfirstname + 1 +
        *this->nsurname + 1 + 
        4 * sizeof(size_t); 

    *serialized = memMalloc(*nserialized);

    memcpy(*serialized, this->username, *nserialized);
}

static
void
userUnserialize(
        void                * _this,
        const unsigned char * serialized,
        size_t                nserialized)
{
    User     this = _this;
    size_t * user_data_sizes;

    this->username = memMalloc(nserialized);
    memcpy(this->username, serialized, nserialized);

    user_data_sizes =
        (size_t *)(this->username + nserialized - 4 * sizeof(size_t));

    this->nusername  = user_data_sizes;
    this->nemail     = user_data_sizes + 1;
    this->nfirstname = user_data_sizes + 2;
    this->nsurname   = user_data_sizes + 3;

    this->email     = this->username + *this->nusername + 1;
    this->firstname = this->email + *this->nemail + 1;
    this->surname   = this->firstname + *this->nfirstname + 1;
}

static
Uuid
userIndexUuid(void * _this, Uuid namespace)
{
    User this = _this;

    return uuidVersion3(
            (unsigned char *)this->username,
            *this->nusername,
            namespace);
}


INIT_IFACE(Class, userCtor, userDtor, NULL);
INIT_IFACE(Serializable, userSerialize, userUnserialize);
INIT_IFACE(Indexable, userIndexUuid);
CREATE_CLASS(User, NULL, IFACE(Class), IFACE(Serializable), IFACE(Indexable));

// vim: set ts=4 sw=4: