list_linked.c

/*
** list_linked.c for push_swap in /home/sebastien/travaux/push_swap
**
** Made by Sebastien Chapuis
** Login   <sebastien@epitech.net>
**
** Started on  Sat Dec 21 19:51:22 2013 Sebastien Chapuis
** Last update Wed Jan 15 13:03:45 2014 sebastien
*/

#include <stdlib.h>
#include "my_select.h"

static t_list	*create_list(char *str)
{
  t_list	*new;

  new = NULL;
  if (new = (t_list*)malloc(sizeof(*new)))
  {
    new->str = str;
    new->size_str = my_strlen(str) + 2;
    new->is_select = 0;
    new->is_current = 0;
    new->prec = NULL;
    new->next = NULL;
  }
  else
    puterror("error: Could not alloc\n");
  return (new);
}

int		push_back(t_list **root, char *str)
{
  t_list	*new;
  t_list	*tmp;

  tmp = *root;
  new = create_list(str);
  if (new)
  {
    new->prec = tmp->prec;
    new->next = tmp;
    tmp->prec->next = new;
    tmp->prec = new;
    (*root)->nb_elem = (*root)->nb_elem + 1;
    return (0);
  }
  return (-1);
}

int	init_roots(t_list **root)
{
  if ((*root = (t_list*)malloc(sizeof(**root))) == NULL)
  {
    puterror("error: Could not alloc\n");
    return (-1);
  }
  (*root)->is_current = 0;
  (*root)->is_select = 0;
  (*root)->nb_elem = 0;
  (*root)->next = (*root);
  (*root)->prec = (*root);
  return (0);
}

void		free_list(t_list *root)
{
  t_list	*tmp;
  t_list	*tmp2;

  tmp = root->next;
  while (tmp != root)
  {
    tmp2 = tmp->next;
    free(tmp);
    tmp = tmp2;
  }
  free(tmp);
}