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ft_split.c
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ft_split.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_split.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: bnidia <bnidia@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/17 14:38:55 by bnidia #+# #+# */
/* Updated: 2021/11/03 12:50:30 by bnidia ### ########.fr */
/* */
/* ************************************************************************** */
/* ft_split
** Allocates (with malloc(3)) and returns an array of strings obtained
** by splitting ’s’ using the character ’c’ as a delimiter. The array
** must be ended by a NULL pointer.
** Return Value
** The array of new strings resulting of the split. NULL if the
** allocation fails
*/
#include "libft.h"
static size_t ft_count_word(char *str, char c);
static size_t ft_count_letter(char *str, char c);
static char *ft_word_to_str(char *str, char c);
static void ft_words_to_arr(char **result, char *str, int c);
char **ft_split(char const *s, char c)
{
char **result;
size_t w_count;
if (s)
{
w_count = ft_count_word((char *)s, c);
result = (char **) malloc(sizeof(char *) * (w_count + 1));
if (!result)
return (NULL);
result[w_count] = NULL;
ft_words_to_arr(result, (char *)s, c);
return (result);
}
return (NULL);
}
static size_t ft_count_word(char *str, char c)
{
size_t w_count;
w_count = 0;
while (*str == c && *str)
str++;
while (*str)
{
w_count++;
while (*str && *str != c)
str++;
while (*str && *str == c)
str++;
}
return (w_count);
}
static size_t ft_count_letter(char *str, char c)
{
size_t l_count;
l_count = 0;
while (str[l_count] != c && str[l_count])
l_count++;
return (l_count);
}
static char *ft_word_to_str(char *str, char c)
{
size_t i;
size_t len;
char *word;
i = 0;
len = ft_count_letter(str, c);
word = (char *)malloc(sizeof(char) * (len + 1));
if (!word)
return (NULL);
word[len] = '\0';
while (i < len)
{
word[i] = str[i];
i++;
}
return (word);
}
static void ft_words_to_arr(char **result, char *str, int c)
{
size_t w_index;
w_index = 0;
while (*str == c && *str)
str++;
while (*str)
{
result[w_index] = ft_word_to_str(str, c);
if (!result[w_index] && result[0])
{
while (w_index != 0)
{
free(result[w_index]);
result[w_index] = NULL;
w_index--;
}
free(result);
return ;
}
w_index++;
while (*str && *str != c)
str++;
while (*str && *str == c)
str++;
}
}