From: Lukas Jiriste <ljiriste@student.42prague.com>
Date: Sun, 21 Jul 2024 07:10:44 +0000 (+0200)
Subject: Add and outline for the tree execution.
X-Git-Url: https://git.ljiriste.work/?a=commitdiff_plain;h=2c9a54e7940b69d7bc5fce3d005f9fc3547df498;p=42%2Fminishell.git

Add and outline for the tree execution.
---

diff --git a/src/execution.c b/src/execution.c
index 238734c..eb48768 100644
--- a/src/execution.c
+++ b/src/execution.c
@@ -3,17 +3,96 @@
 /*                                                        :::      ::::::::   */
 /*   execution.c                                        :+:      :+:    :+:   */
 /*                                                    +:+ +:+         +:+     */
-/*   By: ljiriste <marvin@42.fr>                    +#+  +:+       +#+        */
+/*   By: ljiriste <ljiriste@student.42prague.com>   +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
-/*   Created: 2024/05/03 15:59:58 by ljiriste          #+#    #+#             */
-/*   Updated: 2024/06/21 17:00:46 by ljiriste         ###   ########.fr       */
+/*   Created: 2024/07/21 08:57:54 by ljiriste          #+#    #+#             */
+/*   Updated: 2024/07/21 09:10:19 by ljiriste         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "minishell.h"
 
-int	execute(__attribute__((unused))t_tree *parse_tree, __attribute__((unused))t_vars *vars)
+int	ex_simple_command(t_parse_tree_node *simple_command, t_execution_info *info)
 {
-	ft_printf("Function execute has to be implemented.\n");
+	t_vec	redirections;
+	t_vec	assignments;
+	char	**fields;
+
+	save_redirections(&redirections, simple_command);
+	save_assignments(&assignments, simple_command);
+	fields = expand(simple_command, info, &redirections, &assignments);
+	if (!fields)
+	{
+		ft_vec_free(&redirections, void_free_redirection);
+		ft_vec_free(&assignments, void_free_assignments);
+		return (1);
+	}
+	if (!*fields)
+	{
+		save_assignments(&assignments, info);
+		return (0);
+	}
+	ex_fields(fields, assignments, redirections, info);
+	ft_vec_free(&redirections, void_free_redirection);
+	ft_vec_free(&assignments, void_free_assignments);
+	return (0);
+}
+
+int	ex_command(t_parse_tree_node *command, t_execution_info *info)
+{
+	if (is_token_type(ft_vec_caccess(&command->children, 0), "simple_command"))
+		return (ex_simple_command(ft_vec_access(&command->children, 0), info));
+	else
+	{
+		comp_command = ft_vec_access(&command->children, 0);
+		info_copy = copy_info(info);
+		if (!info_copy)
+			return (1);
+		res = ex_program(ft_vec_access(&comp_command->children, 1), info_copy);
+		free_info(info_copy);
+		return (res);
+	}
+}
+
+int	ex_pipeline(t_parse_tree_node *pipeline, t_execution_info *info)
+{
+	if (pipeline->children.size == 1)
+		return (ex_command(ft_vec_access(&pipeline->children, 0), info));
+	else
+	{
+		if (pipe(pipe_fds))
+			return (1);
+		ft_swap_fd(&pipe_fds[1], &info->stdout_fd);
+		ex_pipeline(ft_vec_access(&pipeline->children, 0), info);
+		ft_swap_int(&pipe_fds[1], &info->stdout_fd);
+		ft_swap_int(&pipe_fds[0], &info->stdin_fd);
+		ex_command(ft_vec_access(&pipeline->children, 2), info);
+		ft_swap_int(&pipe_fds[0], &info->stdin_fd);
+		close(pipe_fds[0]);
+		close(pipe_fds[1]);
+	}
 	return (0);
 }
+
+int	ex_program(t_parse_tree_node *program, t_execution_info *info)
+{
+	if (program->children.size == 1)
+		ex_pipeline(ft_vec_access(&program->children, 0), info);
+	else if (is_token_type(ft_vec_caccess(&program->children, 1), "AND_IF"))
+	{
+		ex_program(ft_vec_access(&program->children, 0), info);
+		if (info->ret_val == 0)
+			ex_pipeline(ft_vec_access(&program->children, 2), info);
+	}
+	else
+	{
+		ex_program(ft_vec_access(&program->children, 0), info);
+		if (info->ret_val != 0)
+			ex_pipeline(ft_vec_access(&program->children, 2), info);
+	}
+}
+
+int	execute(t_tree *parse_tree, t_vars *vars)
+{
+	return (ex_program(parse_tree, env));
+}