/* EINA_GRAPH - EFL graph processing library
 * Copyright (C) 2013 Jérémy Zurcher
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies of the Software and its Copyright notices. In addition publicly
 * documented acknowledgment must be given that this software has been used if no
 * source code of this software is made available publicly. This includes
 * acknowledgments in either Copyright notices, Manuals, Publicity and Marketing
 * documents or any documentation provided with any product containing this
 * software. This License does not apply to any software that links to the
 * libraries provided by this software (statically or dynamically), but only to
 * the software provided.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */

int _eina_graph_log_dom = -1;
int _eina_graph_init_count = 0;

#include <Eina.h>
#include "eina_graph_private.h"

EAPI int
eina_graph_init(void)
{
   const char * log_dom = "eina_graph";

   if (++_eina_graph_init_count != 1)
     {
        DBG("init count is %d.", _eina_graph_init_count);
        return _eina_graph_init_count;
     }

   if(!eina_init())
     goto shutdown_eina;

   _eina_graph_log_dom = eina_log_domain_register(log_dom, EINA_COLOR_LIGHTBLUE);
   if (_eina_graph_log_dom < 0)
     {
        EINA_LOG_ERR("Could not register log domain: %s", log_dom);
        goto shutdown_log_dom;
     }

   /* FIXME init stuff goes here */
   DBG("init...");

   return _eina_graph_init_count;

shutdown_log_dom:
   eina_shutdown();
shutdown_eina:
   return --_eina_graph_init_count;
}

EAPI int
eina_graph_shutdown(void)
{
   if (_eina_graph_init_count <= 0)
     {
        ERR("init count not greater than 0.");
        return 0;
     }

   if (--_eina_graph_init_count != 0)
     {
        DBG("init count is %d.", _eina_graph_init_count);
        return _eina_graph_init_count;
     }

   /* FIXME shutdown stuff goes here */
   DBG("shutdown...");

   eina_shutdown();

   return _eina_graph_init_count;
}

Eina_Bool
_eina_graph_adjacents_grow(_Eina_Graph_Adjacents *adjs, unsigned int step)
{
   unsigned int *tmp;
   unsigned int total;

   total = adjs->total + step;
   tmp = realloc(adjs->data, sizeof (unsigned int) * total);
   if (EINA_UNLIKELY(!tmp)) return EINA_FALSE;

   adjs->total = total;
   adjs->data = tmp;

   return EINA_TRUE;
}