minishell/src/minishell.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   minishell.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kcolin <marvin@42.fr>                      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/02/06 13:44:06 by kcolin            #+#    #+#             */
/*   Updated: 2025/02/06 14:25:02 by kcolin           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include <readline/history.h>
#include <readline/readline.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

/*
** get the prompt to show to the user when getting a command
**
** if the terminal is a tty, the prompt is '$ ', else it is ''
*/
static const char	*get_prompt(void)
{
	if (isatty(STDIN_FILENO))
		return ("$ ");
	return ("");
}

/*
** get a command line using readline.
**
** returned buffer must be freed by caller.
** will add command to history if appropriate.
*/
static char	*get_command(void)
{
	char	*line;

	line = readline(get_prompt());
	if (line != NULL && line[0] != '\0')
		add_history(line);
	return (line);
}

int	main(int argc, char *argv[], char **envp)
{
	char	*line;

	(void)argc;
	(void)argv;
	(void)envp;
	line = get_command();
	while (line != NULL)
	{
		printf("%s\n", line); // FIXME
		free(line);
		line = get_command();
	}
	return (0);
}