/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strdup_quotes.c                                 :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/11/13 04:35:06 by lperrey           #+#    #+#             */
/*   Updated: 2021/11/26 21:27:05 by lperrey          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minishell.h"

static int	quote_state_change(int *quote_state, const char *s);

/* Duplicate a string minus the quoting characters ['] and ["]*/
char	*ft_strdup_quotes(const char *s)
{
	unsigned int	i;
	unsigned int	i_dup;
	char			*dup;
	int				quote_state;

	dup = ft_calloc(ft_strlen(s) + 1, 1);
	if (!dup)
		return (NULL);
	i = 0;
	i_dup = 0;
	quote_state = 0;
	while (s[i])
	{
		while (quote_state_change(&quote_state, &s[i]))
			i++;
		if (s[i])
			dup[i_dup++] = s[i++];
	}
	return (dup);
}

static int	quote_state_change(int *quote_state, const char *s)
{
	if (s[0] == '\'' && *quote_state != IN_DQUOTES)
	{
		if (*quote_state == IN_QUOTES)
			*quote_state = 0;
		else if (ft_strchr(&s[1], '\'')) // if closed quotes
			*quote_state = IN_QUOTES;
		else
			return (0);
		return (1);
	}
	else if (s[0] == '\"' && *quote_state != IN_QUOTES)
	{
		if (*quote_state == IN_DQUOTES)
			*quote_state = 0;
		else if (ft_strchr(&s[1], '\"')) // if closed quotes
			*quote_state = IN_DQUOTES;
		else
			return (0);
		return (1);
	}
	return (0);
}