ft_printf_utils_2.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_printf_utils_2.c                                :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: apuchill <apuchill@student.42sp.org.br>    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/05/19 12:25:19 by apuchill          #+#    #+#             */
/*   Updated: 2020/05/28 01:47:45 by apuchill         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "ft_printf.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);
}

size_t	ft_strlcat(char *dst, const char *src, size_t dstsize)
{
	size_t c;
	size_t d;

	if (dstsize <= ft_strlen(dst))
		return (dstsize + ft_strlen(src));
	c = ft_strlen(dst);
	d = 0;
	while (src[d] != '\0' && c + 1 < dstsize)
	{
		dst[c] = src[d];
		c++;
		d++;
	}
	dst[c] = '\0';
	return (ft_strlen(dst) + ft_strlen(&src[d]));
}

char	*ft_strdup(const char *s1)
{
	char	*s2;
	size_t	size;
	size_t	i;

	size = ft_strlen(s1) + 1;
	if (!(s2 = (char *)malloc(size)))
		return (0);
	i = 0;
	while (i < size)
	{
		((unsigned char *)s2)[i] = ((unsigned char *)s1)[i];
		i++;
	}
	return (s2);
}

char	*ft_strjoin(char const *s1, char const *s2)
{
	char	*new_str;
	int		i;
	int		j;

	if (!s1 || !s2 ||
		!(new_str = (char *)malloc(ft_strlen(s1) + ft_strlen(s2) + 1)))
		return (0);
	i = 0;
	while (s1[i] != '\0')
	{
		new_str[i] = s1[i];
		i++;
	}
	j = 0;
	while (s2[j] != '\0')
	{
		new_str[i] = s2[j];
		i++;
		j++;
	}
	new_str[i] = '\0';
	return (new_str);
}

char	*ft_substr(char const *s, unsigned int start, size_t len)
{
	char	*new_str;
	size_t	i;
	size_t	j;

	if (!s || !(new_str = (char *)malloc(len + 1)))
		return (0);
	i = start;
	j = 0;
	while (i < ft_strlen(s) && j < len)
		new_str[j++] = s[i++];
	new_str[j] = '\0';
	return (new_str);
}