mirror of
https://codeberg.org/la-chouette/minishell.git
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84 lines
2 KiB
C
84 lines
2 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_strtrim.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jguelen <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/10/18 16:29:21 by jguelen #+# #+# */
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/* Updated: 2024/10/23 13:15:24 by jguelen ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include <stdlib.h>
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#include "libft.h"
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#include <stdio.h>
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static int ft_ischarinset(char c, const char *set)
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{
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while (*set)
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{
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if (c == *set)
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return (1);
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set++;
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}
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return (0);
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}
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/*til_trim is never used with NULL*/
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static char *til_trim(const char *s1, const char *set)
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{
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char *valid_end;
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valid_end = (char *)s1;
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while (*s1)
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{
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if (!ft_ischarinset(*s1, set))
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valid_end = (char *)s1;
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s1++;
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}
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return (valid_end);
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}
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/* '\0' is presupposed not to be taken into account in set
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Check if NULL protection of s1 needed or wanted*/
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char *ft_strtrim(char const *s1, char const *set)
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{
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char *trim;
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size_t trim_len;
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size_t i;
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i = 0;
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if (s1 == NULL)
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return (NULL);
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while (*s1 && ft_ischarinset(*s1, set))
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s1++;
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trim = til_trim(s1, set);
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trim_len = (size_t)(trim - s1) + 1;
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if (*s1 == '\0')
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trim_len = 0;
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trim = (char *) malloc((trim_len + 1) * sizeof(char));
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if (trim == NULL)
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return (NULL);
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while (i < trim_len)
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{
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trim[i] = s1[i];
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i++;
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}
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trim[i] = '\0';
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return (trim);
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}
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/*
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int main(void)
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{
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char *s;
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char *s1;
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char *set;
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s = "cabcdccc";
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s1 = "";
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set = "c";
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printf("%s\n", ft_strtrim(s, set));
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printf("%s\n", ft_strtrim(s1, set));
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return (0);
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}*/
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