From 47fff4418d3a83ae214429f395232c3536ff03c4 Mon Sep 17 00:00:00 2001
From: Charles <sircharlesaze@gmail.com>
Date: Sun, 14 Jun 2020 16:07:19 +0200
Subject: Added eval cmd and error handling draft, Updated preprocessing for
 list

---
 src/eval/cmd.c | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 src/eval/cmd.c

(limited to 'src/eval/cmd.c')

diff --git a/src/eval/cmd.c b/src/eval/cmd.c
new file mode 100644
index 0000000..2896ab6
--- /dev/null
+++ b/src/eval/cmd.c
@@ -0,0 +1,110 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   cmd.c                                              :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: charles <charles.cabergs@gmail.com>        +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/06/14 10:41:31 by charles           #+#    #+#             */
+/*   Updated: 2020/06/14 12:52:59 by charles          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "eval.h"
+
+/*
+** \brief          Wrap a function in a fork
+** \param fd_in    fork input file descriptor
+** \param fd_out   fork output file descriptor
+** \param passed   param of the wrapped function
+** \param wrapped  function to wrap
+*/
+
+int			fork_wrap(
+	int	fd_in,
+	int fd_out,
+	void *passed,
+	int (*wrapped)(void *param))
+{
+	int		status;
+	pid_t	child_pid;
+
+	if ((child_pid = fork()) == -1)
+		return (-1);
+	if (child_pid == 0)
+	{
+		if (dup2(STDIN_FILENO, fd_in) == -1 ||
+			dup2(STDOUT_FILENO, fd_out) == -1)
+			exit(EXIT_FAILURE);
+		if ((status = wrapped(passed)) == -1)
+			exit(EXIT_FAILURE);
+		exit(status);
+	}
+	wait(&child_pid);
+	return (WEXITSTATUS(child_pid));
+}
+
+/*
+** \brief        execve syscall wrapper passed it to fork_wrap
+** \param param  function params
+** \return       execve return value
+*/
+
+int 		forked_cmd(void *void_param)
+{
+	t_fork_param_cmd	*param;
+
+	param = void_param;
+
+	if (param->builtin != NULL)
+		return (param->builtin(param->argv, param->env));
+	else
+		return (execve(param->exec_path, param->argv, (char**)param->env->data));
+}
+
+
+
+int	eval_cmd(t_env env, t_path path, t_ast *ast)
+{
+	t_fork_param_cmd	param;
+
+	// check in and out (single string)
+	// argv[0]: [string]: ambiguous redirect  code 1
+
+	// check in and out (exist)
+	// argv[0]: [string]: No such file or directory (probably from errno)
+
+	return (0);
+	/* if (in != NULL) */
+	/* { */
+	/* 	char **redir_in = preprocess(in); */
+	/* 	if (redir_in[1] != NULL) */
+	/* 		ambiguous; */
+	/* 	if ((fd_in = open(cmd->in, O_RDONLY)) == -1) */
+	/* 		file error; */
+	/* } */
+    /*  */
+	/* if (out != NULL) */
+	/* { */
+	/* 	char **redir_out = preprocess(out); */
+	/* 	if (redir_out[1] != NULL) */
+	/* 		ambiguous; */
+	/* 	if ((fd_out = open(cmd->out, (is_append ? O_APPEND : O_WRONLY) | O_CREAT)) == -1) */
+	/* 		file error; */
+	/* } */
+    /*  */
+	/* char **argv = preprocess(cmd_argv); */
+    /*  */
+	/* param.builtin = builtin_search_func(argv[0]); */
+	/* if (param.builtin) */
+	/* 	param.exec_path = exec_search_path(path, env_search(env, "PATH"), argv[0]); */
+    /*  */
+	/* // get cmd path */
+	/* // argv[0]: [string]: command not found   code 127 */
+	/* if (param.exec_path == NULL) */
+	/* 	not_found; */
+    /*  */
+	/* param.argv = argv; */
+	/* param.env = env; */
+	/* return (fork_wrap(fd_in, fd_out, &param, &execve_wrapper)); */
+}
-- 
cgit