minishell/expander_1.c at master · benemanu/minishell · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   expander_1.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: jklocker <jklocker@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/01/30 14:11:34 by jklocker          #+#    #+#             */
/*   Updated: 2023/01/30 14:11:34 by jklocker         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minishell.h"

int	get_len_env_var(char *var)
{
	int	i;

	i = 0;
	while (var[i] != ' ' && var[i] != '\n' && var[i] != '\0' && var[i] != '\''
		&& var[i] != '"' && var[i] != '$')
		i++;
	return (i);
}

char	*get_env_for_var(t_info *info, char *dol_pos, int len)
{
	t_envlst	*tmp;
	char		tmp_repl;
	char		*ret;

	tmp_repl = dol_pos[len];
	dol_pos[len] = '\0';
	tmp = info->envp;
	while (tmp)
	{
		if (ft_strnstr(tmp->var, dol_pos, len) && tmp->var[len] == '=')
		{
			ret = ft_strnstr(tmp->var, dol_pos, len) + len + 1;
			dol_pos[len] = tmp_repl;
			return (ret);
		}
		tmp = tmp->next;
	}
	dol_pos[len] = tmp_repl;
	return (NULL);
}