ft_strtrim.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strtrim.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: fvieira <fvieira@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/08/18 15:52:21 by fvieira           #+#    #+#             */
/*   Updated: 2022/08/22 23:04:44 by fvieira          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

static char	*ft_strncpy(char *dest, const char *src, size_t n)
{
	size_t	i;

	i = 0;
	while (src[i] != '\0' && i < n)
	{
		dest[i] = src[i];
		i++;
	}
	if (i < n && src[i] == '\0')
	{
		while (dest[i] != '\0')
		{
			dest[i] = '\0';
			i++;
		}
	}
	dest[i] = '\0';
	return (dest);
}

char	*ft_strtrim(char const *s1, char const *set)
{
	size_t	beg;
	size_t	end;
	char	*trimmed_str;

	if (!s1 || !set)
		return (NULL);
	beg = 0;
	while (s1[beg] != '\0' && ft_strchr(set, s1[beg]) != NULL)
		beg++;
	end = ft_strlen (s1 + beg);
	if (end != '\0')
	{
		while (s1[beg + end - 1] != '\0' && ft_strchr(set, s1[beg + end - 1])
			!= NULL)
			end--;
	}
	trimmed_str = malloc((end + 1) * sizeof(char));
	if (trimmed_str == NULL)
		return (NULL);
	ft_strncpy(trimmed_str, (s1 + beg), end);
	return (trimmed_str);
}
/*#include <stdio.h>
int	main(void)
{
	const char	s1[] = "HananaH";
	const char	set[] = "Ha";
	char	*prt;
	prt = ft_strtrim(s1, set);
	printf("String: %s\n", prt);
}*/