handle_redirection.c

#include "../../includes/minishell.h"

int handle_right_arrow(t_redirect *begin)
{
    t_redirect  *current;
    int         fd;

    while (begin)
    {
        if (begin->type == DOUBLE_AQUOTE || begin->type == SIMPLE_AQUOTE)
        {
            current = begin;
            fd = open(current->file, O_CREAT, 0644);
            close(fd);
        }
        begin = begin->next;
    }
    fd = redirect_output(current);
    return (fd);
}

int     is_right_arrow(t_redirect *beggin)
{
    while (beggin)
    {
        if (beggin->type == SIMPLE_AQUOTE || beggin->type == DOUBLE_AQUOTE)
            return (1);
        else if (beggin->type == LEFT_AQUOTE)
            return (0);
        beggin = beggin->next;
    }
    return (0);
}

int     is_left_arrow(t_redirect *beggin)
{
    while (beggin)
    {
        if (beggin->type == LEFT_AQUOTE)
            return (1);
        beggin = beggin->next;
    }
    return (0);
}

t_redirect      *got_right_after_left_arrow(t_redirect *save)
{
    t_redirect *to_redirect;

    to_redirect = NULL;
    while (save)
    {
        if (save->type == SIMPLE_AQUOTE || save->type == DOUBLE_AQUOTE)
            to_redirect = save;
        save = save->next;
    }
    if (to_redirect == NULL)
        return (NULL);
    else
        return (to_redirect);
}

int handle_left_arrow(t_data *data, t_redirect *begin, int is_pipeline)
{
    int fd;
    int save;
    t_redirect *current;
    t_redirect *first_link;

    first_link = begin;
    while (begin)
    {
        if (begin->type == LEFT_AQUOTE)
            current = begin;
        begin = begin->next;
    }
    if ((fd = open(current->file, O_RDONLY)) == -1)
        return (EXIT_FAILURE);
    save = dup(STDIN_FILENO);
    if (dup2(fd, STDIN_FILENO) < 0)
        return (EXIT_FAILURE);
    close (fd);
    dup2(STDIN_FILENO, save);
    close(save);
    if (got_right_after_left_arrow(first_link))
        handle_right_arrow(first_link);
    else if (is_pipeline == 1)
        redirect(data->pipe[1], 1);
    return (EXIT_SUCCESS);
}