minishell/expansions.c at main · mbani01/minishell · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   expansions.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mbani <mbani@student.42.fr>                +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/12/03 11:34:53 by mbani             #+#    #+#             */
/*   Updated: 2020/12/12 20:33:22 by mbani            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "shell.h"

int		char_count(char **str, int i, int *j)
{
	if (str[0][i] == '?')
	{
		*j += 1;
		return (*j);
	}
	while (str[0][i])
	{
		if (((str[0][i] >= 'a' && str[0][i] <= 'z') ||
		(str[0][i] >= 'A' && str[0][i] <= 'Z')) ||
		(str[0][i] >= '0' && str[0][i] <= '9') || str[0][i] == '_')
			*j += 1;
		else
			break ;
		i++;
	}
	return (*j);
}

void	init(int *i, int *j, t_expan *expan)
{
	expan->sng = 0;
	expan->dbl = 0;
	*i = 0;
	*j = 0;
}

int		dollar_found(char **str, t_expan *expan, int *i)
{
	quote_check(&expan->sng, &expan->dbl, str[0], *i);
	if (expan->sng == 1)
	{
		*i += 1;
		return (1);
	}
	return (0);
}

void	dolar_check(char **str)
{
	int		i;
	int		j;
	t_expan	expan;

	init(&i, &j, &expan);
	while (str[0][i])
	{
		if (dollar_found(str, &expan, &i))
			continue;
		else
		{
			if (str[0][i] == '$' && not_escaped(str[0], i))
				i += char_count(str, i + 1, &j);
			if (j)
			{
				if ((search_and_replace(str, i, j)) == 0)
				{
					replace(str, "", j, i);
					i -= j;
				}
				j = 0;
			}
		}
		i++;
	}
}

void	param_expansion(t_cmd *tmp)
{
	while (tmp->next && tmp->next->type != semicolumn)
	{
		dolar_check(&(tmp->string));
		quote_removal(&(tmp->string));
		tmp = tmp->next;
	}
	if (tmp->type != semicolumn)
	{
		dolar_check(&(tmp->string));
		quote_removal(&(tmp->string));
	}
}