get_next_line_utils_bonus.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   get_next_line_utils_bonus.c                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: anhigo-s <anhigo-s@student.42sp.org.br     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/08/27 22:34:13 by anhigo-s          #+#    #+#             */
/*   Updated: 2021/10/10 00:15:33 by anhigo-s         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "get_next_line_bonus.h"

char	*gnl_strchr(char *str, char c)
{
	size_t	i;

	i = -1;
	while (str[++i])
		if (str[i] == c)
			return (&str[i]);
	return (NULL);
}

char	*gnl_strjoinfree(char *s1, char *s2)
{
	char	*nstring;
	size_t	i;
	size_t	a;

	nstring = malloc(gnl_strlen(s1) + gnl_strlen(s2) + 1);
	i = 0;
	a = 0;
	if (nstring == 0)
		return (0);
	while (s1[i] != '\0')
	{
		nstring[i] = s1[i];
		i++;
	}
	while (s2[a] != '\0')
	{
		nstring[i + a] = s2[a];
		a++;
	}
	nstring[i + a] = '\0';
	free(s1);
	s1 = NULL;
	return (nstring);
}

char	*gnl_strdup(char *s)
{
	char	*new;
	char	*res;
	ssize_t	i;

	i = 0;
	while ((s[i] != '\0'))
		i++;
	res = malloc(i + 1);
	new = res;
	while (*s)
		*new++ = *s++;
	*new = 0;
	return (res);
}

size_t	gnl_strlen(const char *s)
{
	size_t	i;

	i = 0;
	while (s[i] != '\0')
	{
		i++;
	}
	return (i);
}

char	*gnl_substr(char const *s, unsigned int start, size_t len)
{
	char	*new;
	char	*res;

	new = malloc(len + 1);
	res = new;
	while (start--)
		s++;
	while (len-- && *s)
		*new++ = *s++;
	*new = 0;
	return (res);
}