ft_strmapi.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strmapi.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: cyfermie <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2017/11/07 16:00:13 by cyfermie          #+#    #+#             */
/*   Updated: 2017/11/09 16:20:56 by cyfermie         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include <stdlib.h>

char	*ft_strmapi(char const *s, char (*f)(unsigned int, char))
{
	char			*new_str;
	size_t			s_len;
	unsigned int	i;

	if (s == NULL || f == NULL)
		return (NULL);
	s_len = 0;
	while (s[s_len] != '\0')
		++s_len;
	new_str = (char *)malloc(sizeof(char) * (s_len + 1));
	if (new_str == NULL)
		return (NULL);
	i = 0;
	while (s[i] != '\0')
	{
		new_str[i] = (*f)(i, s[i]);
		++i;
	}
	new_str[i] = '\0';
	return (new_str);
}