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ft_strdup.c
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ft_strdup.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strdup.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: pvaladar <pvaladar@student.42lisboa.com> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/02/22 12:29:00 by pvaladar #+# #+# */
/* Updated: 2022/03/10 15:59:56 by pvaladar ### ########.fr */
/* */
/* ************************************************************************** */
// STRDUP(3) Library Functions Manual STRDUP(3)
//
// NAME
// strdup, strndup – save a copy of a string
//
// LIBRARY
// Standard C Library (libc, -lc)
//
// SYNOPSIS
// #include <string.h>
//
// char *
// strdup(const char *s1);
//
// char *
// strndup(const char *s1, size_t n);
//
// DESCRIPTION
// The strdup() function allocates sufficient memory for a copy of the
// string s1, does the copy, and returns a pointer to it.
// The pointer may subsequently be used as an argument to the function
// free(3).
//
// If insufficient memory is available, NULL is returned and errno is set
// to ENOMEM.
//
// The strndup() function copies at most n characters from the string s1
// always NUL terminating the copied string.
#include "libft.h" // errno & NULL definitions
char *ft_strdup(const char *s1)
{
char *aux;
aux = (char *)malloc(ft_strlen(s1) + 1);
if (!aux)
{
errno = ENOMEM;
return (NULL);
}
ft_memcpy(aux, s1, ft_strlen(s1) + 1);
return (aux);
}