Minishell/env.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   env.c                                              :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: narnaud <narnaud@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/02/16 09:41:29 by narnaud           #+#    #+#             */
/*   Updated: 2022/05/03 18:17:46 by narnaud          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minishell.h"

int	ft_unset(t_command *cmd)
{
	if (!cmd->argv[1])
	{
		//read(input_fd, PIPE_MAX_SIZE);
		return (1);
	}
	return (0);
}

int	ft_env(t_command *cmd)
{
	int i;

	i = 0;
	while ((*cmd->envp)[i])
	{
		printf("%s\n", (*cmd->envp)[i]);
		i++;
	}
	return (0);
}

int	is_valid_identifier(char *ident)
{
	if (ft_isalpha(ident[0]) || ident[0] == '_')
	{
		while (*ident)
		{
			if (!ft_isalpha(*ident) && !ft_isdigit(*ident) && *ident != '_')
				return (0);
			ident++;
		}
		return (1);
	}
	return (0);
}

int	ft_export(t_command *cmd)
{
	char	**new;
	char	**env;
	int		i;

	i = 0;
	new = ft_split(cmd->argv[1], '=');
	if (!is_valid_identifier(new[0]))
	{
		printf ("export: not an identifier: %s\n", new[0]);
		return (0);
	}
	while ((*cmd->envp)[i])
	{
		env = ft_split((*cmd->envp)[i], '=');
		if (!ft_strncmp(new[0], env[0], ft_strlen(new[0]) + 1))
		{
			(*cmd->envp)[i] = cmd->argv[1];
			return (1);
		}
		i++;
	}
	(*cmd->envp)[i] = cmd->argv[1];
	(*cmd->envp)[i + 1] = NULL;
	return (1);
}