main.c

Go to the documentation of this file.

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   main.c                                             :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rmikhayl <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/06/05 13:23:26 by rmikhayl          #+#    #+#             */
/*   Updated: 2024/09/09 13:27:44 by dmdemirk         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "tokens.h"
#include "execute.h"
#include "shell.h"
#include "pipe.h"
#include "signals.h"
 
static int  status_handler(int status, \
                t_loop_data *loop_data, t_token *token_head);
static void process_ast_and_io(t_ms_data *data, \
                t_loop_data *loop_data, t_token *tokens_head);
static void main_loop(t_ms_data *data, t_loop_data *loop_data);
int         main(int argc, char **argv, char **envp);
 
static int  status_handler(int status, \
                t_loop_data *loop_data, t_token *tokens_head)
{
    if (status == WAIT_NEXT_COMMAND)
    {
        loop_cleanup(loop_data, tokens_head);
        return (0);
    }
    return (1);
}
 
static void process_ast_and_io(t_ms_data *data, \
                t_loop_data *loop_data, t_token *tokens_head)
{
    int status;
 
    status = execute_ast(loop_data->tree, data);
    if (status_handler(status, loop_data, tokens_head))
    {
        handle_io_fd(data);
        loop_cleanup(loop_data, tokens_head);
    }
}
 
static void main_loop(t_ms_data *data, t_loop_data *loop_data)
{
    t_token *tokens_start;
 
    while (1)
    {
        set_signals_interactive();
        loop_data->input = readline("🌴 maxishell> ");
        set_signals_noninteractive();
        if (!loop_data->input || !ft_strncmp(loop_data->input, "exit", 4))
        {
            write(STDOUT_FILENO, "exit\n", 5);
            break ;
        }
        make_history(loop_data->input);
        loop_data->trimmed_input = trim_input(loop_data->input);
        if (input_error_checks(loop_data))
            continue ;
        loop_data->tokens = tokenise(loop_data->trimmed_input);
        tokens_start = loop_data->tokens;
        loop_data->tree = parse_tokens(&loop_data->tokens, data);
        process_ast_and_io(data, loop_data, tokens_start);
    }
    clear_history_file();
}
 
int main(int argc, char **argv, char **envp)
{
    t_ms_data       data;
    t_loop_data     loop_data;
 
    print_maxishell();
    init_ms_data(&data, argv, envp);
    initialise(argc, argv);
    main_loop(&data, &loop_data);
    free_ms_data(&data);
    clear_history_file();
    return (0);
}