ft_strmapi.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strmapi.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kfujita <kfujita@student.42tokyo.jp>       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/04/19 07:47:01 by kfujita           #+#    #+#             */
/*   Updated: 2022/04/25 23:29:21 by kfujita          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "ft_string.h"
 
char    *ft_strmapi(char const *s, char (*f)(unsigned int, char))
{
    char    *p_ret;
    size_t  index;
 
    if (s == NULL || *s == '\0')
        return (ft_strdup(""));
    p_ret = ft_strdup(s);
    if (f == NULL || p_ret == NULL)
        return (p_ret);
    index = 0;
    while (*s != '\0')
    {
        p_ret[index] = f(index, *s++);
        index++;
    }
    return (p_ret);
}