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get_next_line_utils_bonus.c
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get_next_line_utils_bonus.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* get_next_line_utils_bonus.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dcelsa <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/16 21:26:21 by dcelsa #+# #+# */
/* Updated: 2021/10/16 21:26:22 by dcelsa ### ########.fr */
/* */
/* ************************************************************************** */
#include"get_next_line_bonus.h"
t_up_list *lst_search(t_up_list *begin, t_up_list **prev, t_up_list *target,
int fd)
{
if (prev)
*prev = NULL;
while (begin)
{
if ((target && begin == target) || (!target && begin->fd == fd))
break ;
if (prev)
*prev = begin;
begin = begin->next;
}
return (begin);
}
void *erase(char *p1, t_up_list **p2, t_up_list **p3)
{
t_up_list *begin;
t_up_list *prev;
if (p1)
free(p1);
if (!p2 && !p3)
return (NULL);
begin = lst_search(*p2, &prev, *p3, 0);
if (!begin)
return (NULL);
if (prev)
prev->next = begin->next;
if (begin->buf)
free(begin->buf);
begin->buf = NULL;
if (begin == *p2)
*p2 = (*p2)->next;
begin->next = NULL;
free(begin);
*p3 = NULL;
return (NULL);
}
static size_t getlen(char *str)
{
size_t i;
i = 0;
while (str && str[i])
i++;
return (i);
}
char *remal(char *str, char *buf, size_t len)
{
size_t size;
size_t addsize;
size_t i;
char *new_str;
addsize = BUFFER_SIZE;
if (BUFFER_SIZE < INIT_BUF_SIZE)
addsize = INIT_BUF_SIZE;
size = getlen(str);
new_str = str;
if (!size || (size % addsize) + len >= addsize - 1)
new_str = malloc(sizeof(*new_str) * (size + 1 + addsize));
if (!new_str)
return (NULL);
i = -1;
while (str && new_str != str && str[++i] && i < size)
new_str[i] = str[i];
if (str && new_str != str)
erase(str, NULL, NULL);
new_str[size + len] = '\0';
while (len--)
new_str[size + len] = buf[len];
return (new_str);
}