Merge branch 'main' into echo-builtint

1 files changed, 82 insertions, 0 deletions

diff --git a/src/get_cmd_path.c b/src/get_cmd_path.c
new file mode 100644
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, ':'));
+}