minishell/execute_cmd.c at main · lapenji/minishell · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   execute_cmd.c                                      :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: aboncine <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/01/24 12:12:33 by aboncine          #+#    #+#             */
/*   Updated: 2023/02/09 12:37:58 by aboncine         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minishell.h"

int	check_for_pipes(char **s)
{
	int	i;

	i = 0;
	while (s[i] != 0)
	{
		if (ft_is_there_a_pipe(s[i]) == 1)
			return (1);
		i++;
	}
	return (0);
}

static char	**ft_get_paths(char **envp)
{
	int		i;
	char	*tmp;
	char	**res;

	i = 0;
	while (envp[i][0] != 'P' || envp[i][1] != 'A' || envp[i][2] != 'T')
	{
		i++;
	}
	tmp = ft_strtrim(envp[i], "PATH=");
	res = ft_split(tmp, ':');
	free(tmp);
	return (res);
}

static void	execute_cmd_3(char **cmd_args, char **envp)
{
	int		i;
	char	*tmp;
	char	**cmd_paths;

	i = -1;
	if (access(cmd_args[0], F_OK) == 0)
		execve(cmd_args[0], cmd_args, envp);
	cmd_paths = ft_get_paths(envp);
	while (cmd_paths[++i] != 0)
	{
		tmp = ft_strjoin(cmd_paths[i], "/");
		free (cmd_paths[i]);
		cmd_paths[i] = ft_strjoin(tmp, cmd_args[0]);
		free(tmp);
		if (access(cmd_paths[i], F_OK) == 0)
			break ;
	}
	if (cmd_paths[i] == 0)
	{
		printf("error\n");
		exit(-1);
	}
	else
		execve(cmd_paths[i], cmd_args, envp);
}

static void	execute_cmd_2(char **cmd_args)
{
	if (!cmd_args[1])
		printf("\n");
	if (ft_strncmp(cmd_args[1], "-n", 2) == 0)
	{
		ft_simple_echo(cmd_args, 2);
		exit(0);
	}
	else
	{
		ft_simple_echo(cmd_args, 1);
		exit(0);
	}
	exit(0);
}

void	execute_cmd(char **cmd_args, char **envp)
{
	char	cwd[1024];

	if (ft_strncmp(cmd_args[0], "pwd", 3) == 0)
	{
		getcwd(cwd, sizeof(cwd));
		printf("%s\n", cwd);
		exit(0);
	}
	else if (ft_strncmp(cmd_args[0], "env", 3) == 0)
	{
		ft_print_env_b();
		exit(0);
	}
	else if (!ft_strncmp(cmd_args[0], "export", 6))
	{
		ft_print_export();
		exit (g_exitstatus);
	}
	else if (ft_strncmp(cmd_args[0], "echo", 4) == 0)
		execute_cmd_2(cmd_args);
	else
		execute_cmd_3(cmd_args, envp);
}