ft_strdup.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strdup.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kfujita <kfujita@student.42tokyo.jp>       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/04/18 04:23:43 by kfujita           #+#    #+#             */
/*   Updated: 2022/04/25 23:28:38 by kfujita          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include <stdlib.h>
#include "ft_string.h"
 
char    *ft_strdup(const char *s1)
{
    size_t  s1_len;
    char    *p_ret;
    char    *p_ret_top;
 
    s1_len = ft_strlen(s1);
    p_ret = (char *)malloc(s1_len + 1);
    p_ret_top = p_ret;
    if (p_ret == NULL)
        return (NULL);
    while (*s1 != '\0')
        *p_ret++ = *s1++;
    *p_ret = '\0';
    return (p_ret_top);
}