utils.c

/*
** utils.c for my_select in /home/sebastien/travaux/my_select
**
** Made by sebastien
** Login   <sebastien@epitech.net>
**
** Started on  Tue Jan 14 17:32:39 2014 sebastien
** Last update Fri Jan 17 11:39:55 2014 sebastien
*/

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

unsigned int	my_strlen(char *s)
{
  unsigned int	size;

  size = 0;
  if (s == NULL)
    return (0);
  while (s[size])
    size = size + 1;
  return (size);
}

char	*get_term(char **env)
{
  int	i;
  char	*ptr;

  i = 0;
  if (env == NULL || env[0] == NULL)
    return (NULL);
  while (env[i])
  {
    if (env[i][0] == 'T' && env[i][1] == 'E' && env[i][2] == 'R'
	&& env[i][3] == 'M' && env[i][4] == '=')
      return (&(env[i][5]));
    i = i + 1;
  }
  return (NULL);
}

int	my_strcmp(char *s1, char *s2)
{
  return ((*s1 == *s2 && *s1) ? (my_strcmp(++s1, ++s2)) : (*s1 - *s2));
}

void	buf_zero(char *buffer, int size)
{
  int	i;

  i = 0;
  while (i < size)
  {
    buffer[i] = 0;
    i = i + 1;
  }
}

int	usage(void)
{
  if ((close(fd_tty)) == -1)
    my_putstr("error: could not close\n");
  my_putstr("usage: ./my_select choice1 choice2 [...]\n");
  return (-1);
}