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ft_split.c
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ft_split.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_split.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: arcanava <arcanava@student.42barcel> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/01/12 18:18:59 by arcanava #+# #+# */
/* Updated: 2024/01/18 21:34:34 by arcanava ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
static void free_matrix(char **space)
{
int i;
if (!space)
return ;
i = 0;
while (*(space + i) != NULL)
{
free(*(space + i));
i++;
}
free(space);
}
static char **add_new_str(char **str, char *new_str)
{
size_t i;
size_t j;
char **result;
i = 0;
while (str[i] != NULL)
i++;
result = malloc(sizeof(char *) * (i + (ft_strlen(new_str) > 0) + 1));
if (!result)
{
free_matrix(str);
return (NULL);
}
j = 0;
while (j < i)
{
result[j] = str[j];
j++;
}
result[j] = new_str;
result[j + 1] = NULL;
free(str);
return (result);
}
static char **store_string(char const *s, size_t st, size_t ri, char **ss)
{
char *new_str;
if (ri > 0)
{
new_str = ft_substr(s, (unsigned int) st, ri);
if (!new_str)
{
free_matrix(ss);
return (NULL);
}
ss = add_new_str(ss, new_str);
if (!ss)
{
free(new_str);
free_matrix(ss);
return (NULL);
}
}
return (ss);
}
char **ft_split(char const *s, char c)
{
size_t i;
size_t start;
char **strings;
if (!s)
return (NULL);
i = 0;
start = 0;
strings = malloc(sizeof(char *));
if (!strings)
return (NULL);
strings[0] = NULL;
while (s[i] != '\0')
{
if (s[i] == c)
{
strings = store_string(s, start, i - start, strings);
if (!strings)
return (NULL);
start = i + 1;
}
i++;
}
strings = store_string(s, start, i - start, strings);
return (strings);
}