Finish pipes I guess

Somehow this worked at the first try.
This'll have to be tested more thoroughly.

diff --git a/src/interpreter.c b/src/interpreter.c
index f6757c422b64913e1f9f1e7959d7937c5b56ca17..e08d28966f9f0530604fb1f68e3ac3d4c918d163 100644 (file)
--- a/src/interpreter.c
+++ b/src/interpreter.c
@@ -6,7 +6,7 @@
 /*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/08/05 13:15:24 by dkaiser           #+#    #+#             */
-/*   Updated: 2024/10/22 15:42:07 by dkaiser          ###   ########.fr       */
+/*   Updated: 2024/10/25 12:47:15 by dkaiser          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -18,7 +18,7 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
-int    eval_rec(t_node *node, t_env *env);
+static int     eval_rec(t_node *node, t_env *env, int in_fd);
 
 int    eval(t_node *node, t_env *env)
 {
@@ -33,7 +33,7 @@ int   eval(t_node *node, t_env *env)
        }
        if (pid == 0)
        {
-               result = eval_rec(node, env);
+               result = eval_rec(node, env, STDIN_FILENO);
                exit(result);
        }
        else
@@ -43,11 +43,15 @@ int eval(t_node *node, t_env *env)
        return (result);
 }
 
-int    eval_rec(t_node *node, t_env *env)
+static int     eval_rec(t_node *node, t_env *env, int in_fd)
 {
        pid_t   pid;
        int             result;
+       int             p[2];
 
+       result = pipe(p);
+       if (result == -1)
+               return (EXIT_FAILURE);
        if (node->type == PIPE_NODE)
        {
                pid = fork();
@@ -57,12 +61,17 @@ int eval_rec(t_node *node, t_env *env)
                }
                if (pid == 0)
                {
+                       close(p[0]);
+                       dup2(in_fd, STDIN_FILENO);
+                       dup2(p[1], STDOUT_FILENO);
                        result = execute_cmd(&node->content.pipe.left->content.cmd, env);
                        exit(result);
                }
                else
                {
-                       result = eval(node->content.pipe.right, env);
+                       close(p[1]);
+                       dup2(p[0], STDIN_FILENO);
+                       result = eval_rec(node->content.pipe.right, env, p[0]);
                }
        }
        else if (node->type == CMD_NODE)