Add path handling for real now

diff --git a/src/get_cmd_path.c b/src/get_cmd_path.c
new file mode 100644 (file)
index 0000000..1ecf393
--- /dev/null
+++ b/src/get_cmd_path.c
@@ -0,0 +1,82 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   get_cmd_path.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/10/17 16:45:47 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/10/17 17:11:27 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+#include "minishell.h"
+
+static char    *get_absolute_cmd_path(char *cmd, t_env *env);
+static char    *find_in_path(char *cmd, t_env *env);
+char           **get_split_path(t_env *env);
+
+char   *get_cmd_path(char *cmd, t_env *env)
+{
+       if (cmd[0] == '/')
+               return (ft_strdup(cmd));
+       else if (ft_strchr(cmd, '/'))
+               return (get_absolute_cmd_path(cmd, env));
+       else
+               return (find_in_path(cmd, env));
+}
+
+static char    *get_absolute_cmd_path(char *cmd, t_env *env)
+{
+       char    *cur_dir;
+       char    *result;
+
+       cur_dir = ft_strjoin(env_get(env, "PWD"), "/");
+       if (!cur_dir)
+               return (NULL);
+       result = ft_strjoin(cur_dir, cmd);
+       free(cur_dir);
+       if (!result)
+               return (NULL);
+       if (access(result, X_OK) == -1)
+       {
+               free(result);
+               return (NULL);
+       }
+       return (result);
+}
+
+static char    *find_in_path(char *cmd, t_env *env)
+{
+       char    *cur_path;
+       char    *cmd_path;
+       char    **path;
+
+       path = get_split_path(env);
+       cmd_path = NULL;
+       while (*path)
+       {
+               if (cmd_path)
+                       free(cmd_path);
+               cur_path = ft_strjoin(*path, "/");
+               if (!cur_path)
+                       return (NULL);
+               cmd_path = ft_strjoin(cur_path, cmd);
+               free(cur_path);
+               if (!cmd_path)
+                       return (NULL);
+               if (access(cmd_path, X_OK) != -1)
+                       return (cmd_path);
+               path++;
+       }
+       return (NULL);
+}
+
+char   **get_split_path(t_env *env)
+{
+       char    *path;
+
+       path = env_get(env, "PATH");
+       return (ft_split(path, ':'));
+}