ft_strcapitalize.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strcapitalize.c                                 :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: unite <marvin@42.fr>                       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2019/09/06 22:51:50 by unite             #+#    #+#             */
/*   Updated: 2020/07/16 02:52:28 by unite            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "libft.h"
 
static int  scroll_to_word(char **s)
{
    while (**s)
    {
        if (ft_isalnum(**s))
            return (1);
        *s += 1;
    }
    return (0);
}
 
static void capitalize_word(char **s)
{
    **s = ft_toupper(**s);
    *s += 1;
    while (ft_isalnum(**s))
    {
        **s = ft_tolower(**s);
        *s += 1;
    }
}
 
char        *ft_strcapitalize(const char *s1)
{
    char    *s2;
 
    if (!s1 || !(s2 = ft_strdup(s1)))
        return (0);
    while (scroll_to_word(&s2))
        capitalize_word(&s2);
    return (s2);
}