From: Lukas Jiriste <ljiriste@student.42prague.com>
Date: Sun, 21 Jul 2024 12:24:50 +0000 (+0200)
Subject: Add save_assignments function
X-Git-Url: https://git.ljiriste.work/?a=commitdiff_plain;h=bc9bc2d04639924d3660ad753ee53effb309b772;p=42%2Fminishell.git

Add save_assignments function

This function traverses the subtree of the command and extracts all
ASSIGNMENT_WORD tokens to the assignments t_vec so that it is in the
same form as the t_vecs in t_vars.
---

diff --git a/src/execution.c b/src/execution.c
index 40ec8af..eb14d4b 100644
--- a/src/execution.c
+++ b/src/execution.c
@@ -6,12 +6,91 @@
 /*   By: ljiriste <ljiriste@student.42prague.com>   +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/07/21 08:57:54 by ljiriste          #+#    #+#             */
-/*   Updated: 2024/07/21 13:11:50 by ljiriste         ###   ########.fr       */
+/*   Updated: 2024/07/21 14:24:33 by ljiriste         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "minishell.h"
 
+int	cmp_var_name(const char *a, const char *b)
+{
+	int		namelen;
+	char	*eq_ptr;
+
+	eq_ptr = ft_strchr(a, '=');
+	namelen = eq_ptr - a;
+	eq_ptr = ft_strchr(b, '=');
+	if (namelen != eq_ptr - b)
+		return (1);
+	return (ft_strcmp(a, b, namelen));
+}
+
+void	clear_old(t_vec *assignments, const char *new)
+{
+	size_t	i;
+	char	**assignment;
+
+	i = assignments->size;
+	while (i > 0)
+	{
+		--i;
+		assignment = ft_vec_access(assignments, i);
+		if (cmp_var_name(*assignment, new))
+			continue ;
+		ft_vec_erase(assignments, i, free);
+	}
+	return ;
+}
+
+int	add_assignment(t_vec *assignments, const char *assignment)
+{
+	size_t	i;
+	char	*copy;
+
+	copy = ft_strdup(subnode->token.str);
+	if (!copy)
+		return (1);
+	clear_old(assignments, copy);
+	if (ft_vec_append(assignments, &copy) == success)
+		return (0);
+	free(copy);
+	return (1);
+}
+
+int	save_assignments_prefix(t_vec *assignments, t_parse_tree_node *prefix)
+{
+	size_t				i;
+	char				*assignment;
+	t_parse_tree_node	*subnode;
+
+	i = 0;
+	while (i < prefix->children.size)
+	{
+		subnode = ft_vec_access(&prefix->children, i);
+		if (is_token_type(subnode, "ASSIGNMENT_WORD"))
+		{
+			if (add_assignment(assignments, subnode->token.str))
+				return (1);
+		}
+		else if (is_token_type(subnode, "cmd_prefix"))
+			if (save_assignments_prefix(assignments, subnode))
+				return (1);
+		++i;
+	}
+	return (0);
+}
+
+int	save_assignments(t_vec *assignments, t_parse_tree_node *simple_command)
+{
+	t_parse_tree_node	*subnode;
+	if (ft_vec_init(assignments, sizeof(char *)) != success)
+		return (1);
+	subnode = ft_vec_access(&simple_command->children, 0);
+	if (is_token_type(subnode, "cmd_prefix"))
+		return (save_assignments_prefix(assignments, subnode));
+	return (0);
+}
+
 int	ex_simple_command(t_parse_tree_node *simple_command, t_execution_env *env)
 {
 	t_vec	redirections;