ft_strmapi.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strmapi.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: apuchill <apuchill@student.42sp.org.br>    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/02/02 16:36:24 by apuchill          #+#    #+#             */
/*   Updated: 2020/02/19 14:06:21 by apuchill         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

/*
** LIBRARY: N/A
** SYNOPSIS: create new string from modifying string with specified function
**
** DESCRIPTION:
** 		Applies the function ’f’ to each character of the string ’s’ to create
**	a new string (with malloc(3)) resulting from successive applications of ’f’.
*/

#include "libft.h"

char	*ft_strmapi(char const *s, char (*f)(unsigned int, char))
{
	char			*str;
	unsigned int	i;

	if (!s || !f || !(str = ft_strdup(s)))
		return (0);
	i = 0;
	while (str[i])
	{
		str[i] = f(i, str[i]);
		i++;
	}
	return (str);
}