simple_cmd_builtin() done.

+ exec_cmd_line.c split in multiples files

srcs/exec/find_access.c

@@ -0,0 +1,113 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   find_access.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2021/11/16 01:57:38 by lperrey           #+#    #+#             */
+/*   Updated: 2021/11/18 13:20:20 by lperrey          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+static int			search_cmd_path(char *cmd_name, char **cmd_path,
+					char *path[]);
+static t_builtin_f	search_builtin(char *cmd_name);
+static int			handle_access_error(char *file_name);
+
+// https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_08_02
+// faire des test sur la valeur de errno selon les cas (if directory, if pathname invalid, ...)
+
+int	cmd_find_access(t_cmd *cmd, char *path[])
+{
+	if (ft_strchr(cmd->argv[0], '/'))
+	{
+		if (access(cmd->argv[0], X_OK) == -1)
+			cmd->error = handle_access_error(cmd->argv[0]);
+		else
+		{
+			cmd->path = ft_strdup(cmd->argv[0]);
+			if (!cmd->path) 
+				return (0);
+		}
+	}
+	else
+	{
+		cmd->builtin_func = search_builtin(cmd->argv[0]);
+		if (cmd->builtin_func)
+			return (1);
+		if (search_cmd_path(cmd->argv[0], &cmd->path, path) == -1)
+			return (0);
+		if (!cmd->path)
+		{
+			cmd->error = 127;
+			ft_putstr_fd("minishell: ", 2);
+			ft_putstr_fd(cmd->argv[0], 2);
+			ft_putstr_fd(": command not found\n", 2);
+		}
+	}
+	return (1);
+}
+
+
+static int	search_cmd_path(char *cmd_name, char **cmd_path, char *path[])
+{
+	int	i;
+
+	if (!path)
+		return (1);
+	cmd_name = ft_strjoin("/", cmd_name);
+	if (!cmd_name)
+		return (ft_reti_perror(-1, "search_cmd_path()"));
+	i = 0;
+	while (path[i])
+	{
+		*cmd_path = ft_strjoin(path[i], cmd_name);
+		if (!*cmd_path)
+			return (ft_reti_perror(-1, "search_cmd_path()"));
+		if (access(*cmd_path, X_OK) == 0)
+			break ;
+		else
+		{
+			free(*cmd_path);
+			*cmd_path = NULL; // TODO : free_null()
+		}
+		i++;
+	}
+	free(cmd_name);
+	return (1);
+}
+
+static t_builtin_f	search_builtin(char *cmd_name)
+{
+	if (ft_strncmp(cmd_name, "echo", 4 + 1) == 0)
+		return (&builtin_echo);
+	else if (ft_strncmp(cmd_name, "cd", 2 + 1) == 0)
+		return (&builtin_cd);
+	else if (ft_strncmp(cmd_name, "pwd", 3 + 1) == 0)
+		return (&builtin_pwd);
+	else if (ft_strncmp(cmd_name, "export", 6 + 1) == 0)
+		return (&builtin_export);
+	else if (ft_strncmp(cmd_name, "unset", 5 + 1) == 0)
+		return (&builtin_unset);
+	else if (ft_strncmp(cmd_name, "env", 3 + 1) == 0)
+		return (&builtin_env);
+	else if (ft_strncmp(cmd_name, "exit", 4 + 1) == 0)
+		return (&builtin_exit);
+	return (NULL);
+}
+
+static int	handle_access_error(char *file_name)
+{
+	int	tmp;
+
+	tmp = errno;
+	ft_perror_io("minishell: ", file_name);
+	errno = tmp;
+	if (errno == EACCES)
+		return (127);
+	return (1);
+	// 126
+}