utils.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   utils.c                                            :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: moabed <moabed@student.42amman.com>        +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/12/12 21:49:37 by moabed            #+#    #+#             */
/*   Updated: 2025/12/30 15:37:06 by moabed           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "pipex.h"

char	**findpath(char **evar)
{
	int	i;

	i = 0;
	while (evar[i])
	{
		if (ft_strncmp(evar[i], "PATH=", 5) == 0)
			return (ft_split(evar[i] + 5, ':'));
		i++;
	}
	return (NULL);
}

void	error(int check, int *fd)
{
	if (check == 0)
	{
		write(2, "Bad args\nExample: "
			"./pipex file1 cmd1 cmd2 file2\n", 49);
		exit(EXIT_FAILURE);
	}
	else if (check == 1)
	{
		close(fd[0]);
		close(fd[1]);
		perror("Error");
		exit(EXIT_FAILURE);
	}
	else if (check == 3)
	{
		close(fd[0]);
		close(fd[1]);
		write(2, "Error : Permission denied\n", 26);
		exit(126);
	}
}

void	free2d_array(char **arr)
{
	int	i;

	i = 0;
	if (!arr)
		return ;
	while (arr[i])
	{
		free(arr[i]);
		i++;
	}
	free(arr);
}

int	fh1(char *av, int *fds)
{
	int	fd;

	fd = -1;
	if (access(av, F_OK) == 0)
		fd = open(av, O_RDONLY);
	if (fd == -1)
	{
		close(fds[0]);
		close(fds[1]);
		perror(av);
		exit(EXIT_FAILURE);
	}
	return (fd);
}

int	fh2(char *av, int *fds)
{
	int	fd;

	fd = -1;
	fd = open(av, O_WRONLY | O_TRUNC | O_CREAT, 0644);
	if (fd == -1)
	{
		close(fds[0]);
		close(fds[1]);
		perror(av);
		exit(EXIT_FAILURE);
	}
	return (fd);
}