ft_strlcpy.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strlcpy.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: apuchill <apuchill@student.42sp.org.br>    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2019/11/30 21:33:05 by apuchill          #+#    #+#             */
/*   Updated: 2020/02/19 15:12:34 by apuchill         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

/*
** LIBRARY: <string.h>
** SYNOPSIS: size-bounded string copying
**
** DESCRIPTION:
** 		The strlcpy() and strlcat() functions copy and concatenate strings
**	respectively.  They are designed to be safer, more consistent, and less
**	error prone replacements for strncpy(3) and strncat(3).  Unlike those
**	functions, strlcpy() and strlcat() take the full size of the buffer (not
**	just the length) and guarantee to NUL-terminate the result (as long as
**	size is larger than 0 or, in the case of strlcat(), as long as there is
**	at least one byte free in dst).  Note that you should include a byte for
**	the NUL in size.  Also note that strlcpy() and strlcat() only operate on
**	true ``C'' strings.  This means that for strlcpy() src must be NUL-termi-
**	nated and for strlcat() both src and dst must be NUL-terminated.
** 		The strlcpy() function copies up to size - 1 characters from the NUL-
**	terminated string src to dst, NUL-terminating the result.
*/

#include "libft.h"

size_t	ft_strlcpy(char *dst, const char *src, size_t dstsize)
{
	size_t srcsize;
	size_t i;

	if (!dst || !src)
		return (0);
	srcsize = ft_strlen(src);
	i = 0;
	if (dstsize != 0)
	{
		while (src[i] != '\0' && i < (dstsize - 1))
		{
			dst[i] = src[i];
			i++;
		}
		dst[i] = '\0';
	}
	return (srcsize);
}