Added eval cmd and error handling draft, Updated preprocessing for list

3 files changed, 173 insertions, 86 deletions

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)); */
+}
diff --git a/src/eval/error.c b/src/eval/error.c
new file mode 100644
index 0000000..016a751
--- /dev/null
+++ b/src/eval/error.c
@@ -0,0 +1,56 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   error.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: charles <charles.cabergs@gmail.com>        +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/06/14 11:02:52 by charles           #+#    #+#             */
+/*   Updated: 2020/06/14 12:19:14 by charles          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "eval.h"
+
+static t_error	g_errors[] =
+{
+	{ERROR_AMBIGUOUS_REDIR, 1, "ambiguous redirect"},
+	{ERROR_OPEN, 1, NULL},
+	{ERROR_CMD_NOT_FOUND, 127, "command not found"},
+	{ERROR_SYNTAX, 2, "syntax error near unexpected token "},
+};
+
+t_error			*st_error_get(enum e_error id)
+{
+	size_t	i;
+	t_error	*match;
+
+	match = NULL;
+	i = 0;
+	while (i < sizeof(g_errors) / sizeof(t_error))
+	{
+		if (g_errors[i].id == id)
+			match = &g_errors[i];
+		i++;
+	}
+	return (match);
+}
+
+void			error_eval_put(enum e_error id, char *unexpected)
+{
+	t_error	*err;
+
+	err = st_error_get(id);
+	ft_putstr_fd("minishell: ", STDERR_FILENO);
+	ft_putstr_fd(unexpected, STDERR_FILENO);
+	ft_putstr_fd(": ", STDERR_FILENO);
+	if (err->msg == NULL)
+		ft_putendl_fd(strerror(errno), STDERR_FILENO);
+	else
+		ft_putendl_fd(err->msg, STDERR_FILENO);
+}
+
+int				error_status(enum e_error id)
+{
+	return (st_error_get(id)->status);
+}
diff --git a/src/eval/eval.c b/src/eval/eval.c
index 1e0a8d7..c1b580f 100644
--- a/src/eval/eval.c
+++ b/src/eval/eval.c
@@ -6,96 +6,17 @@
 /*   By: charles <charles.cabergs@gmail.com>        +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2020/04/01 17:05:21 by charles           #+#    #+#             */
-/*   Updated: 2020/06/14 10:34:11 by charles          ###   ########.fr       */
+/*   Updated: 2020/06/14 10:42:37 by charles          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
-/* #<{(| */
-/* ** \file   eval.c */
-/* ** \brief  Evaluation of an AST */
-/* |)}># */
-/*  */
+/*
+** \file   eval.c
+** \brief  Evaluation of an AST
+*/
+
 /* #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)); */
-/* } */
-/*  */
-/* int 		run_builtin(t_eval_state *state, char **argv) */
-/* { */
-/* 	return (builtin_dispatch_run(argv, state->env)); */
-/* } */
-/*  */
-/* #<{(| */
-/* ** \brief        execve syscall wrapper passed it to fork_wrap */
-/* ** \param param  function params */
-/* ** \return       execve return value */
-/* |)}># */
-/*  */
-/* int 		execve_wrapper(void *param) */
-/* { */
-/* 	return (execve( */
-/* 		((t_fork_param_execve*)param)->exec_path, */
-/* 		((t_fork_param_execve*)param)->argv, */
-/* 		((t_fork_param_execve*)param)->envp */
-/* 	)); */
-/* } */
-/*  */
-/* #<{(| */
-/* ** \brief        Evaluate a command */
-/* ** \param state  Evaluation state */
-/* ** \param cmd    Command to evaluate */
-/* ** \return       Executable status or -1 on error */
-/* |)}># */
-/*  */
-/* static int	eval_cmd(int fd_in, int fd_out, t_eval_state *state, t_cmd *cmd) */
-/* { */
-/* 	t_fork_param_execve	param; */
-/*  */
-/* 	if (builtin_check_exec_name(cmd->argv[0])) */
-/* 		return (run_builtin(state, cmd->argv)); */
-/* 	param.exec_path = exec_search_path( */
-/* 			state->path, env_search(state->env, "PATH"), cmd->argv[0]); */
-/* 	if (param.exec_path == NULL) */
-/* 		return (-1); */
-/* 	if (cmd->in != NULL && (fd_in = open(cmd->in, O_RDONLY)) == -1) */
-/* 		return (-1); */
-/* 	if (cmd->out != NULL && (fd_out = open(cmd->out, */
-/* 			(cmd->is_append ? O_APPEND : O_WRONLY) | O_CREAT)) == -1) */
-/* 		return (-1); */
-/* 	param.argv = cmd->argv; */
-/* 	param.envp = (char**)state->env->data; */
-/* 	return (fork_wrap(fd_in, fd_out, &param, &execve_wrapper)); */
-/* } */
-/*  */
+
 /* #<{(| */
 /* ** \brief        Evaluate a line */
 /* ** \param state  State of the evaluation */