ft_strtrim.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strtrim.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: tgrekov <tgrekov@student.hive.fi>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/10/26 15:00:51 by tgrekov           #+#    #+#             */
/*   Updated: 2023/11/09 20:54:21 by tgrekov          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "libft.h"
 
char    *ft_strtrim(char const *s1, char const *set)
{
    size_t  start;
    size_t  end;
    char    *s2;
 
    if (!s1 || !set)
        return (0);
    start = 0;
    end = ft_strlen(s1);
    while (start < end && ft_strchr(set, s1[start]))
        start++;
    while (end > start && ft_strchr(set, s1[end]))
        end--;
    s2 = malloc(end - start + 2);
    if (!s2)
        return (0);
    ft_strlcpy(s2, s1 + start, end - start + 2);
    return (s2);
}