* expand

srcs/expander/expand_star.c

@@ -0,0 +1,110 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   expand_star.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lderidde <lderidde@student.s19.be>        +#+  +:+       +#+         */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/02/10 09:09:37 by lderidde          #+#    #+#             */
+/*   Updated: 2025/02/10 13:29:09 by lderidde         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../../includes/exec/expander.h"
+#include <dirent.h>
+#include <stdbool.h>
+
+static char	*_strfjoin(char *s1, char *s2)
+{
+	char			*out;
+	unsigned int	i;
+	unsigned int	j;
+
+	if (!s1 && !s2)
+		return (NULL);
+	if (!s1)
+		return (ft_strdup(s2));
+	if (!s2)
+		return (ft_strdup(s1));
+	out = ft_calloc(ft_strlen(s1) + ft_strlen(s2) + 1, sizeof(char));
+	if (!out)
+		return (NULL);
+	i = 0;
+	j = 0;
+	while (s1[j])
+		out[i++] = s1[j++];
+	j = 0;
+	while (s2[j])
+		out[i++] = s2[j++];
+	free(s1);
+	return (out);
+}
+
+bool	ft_fnmatch(const char *str, const char *pat)
+{
+	if (*pat == '\0' && *str == '\0')
+		return (true);
+	if (*pat == '*' && *(pat + 1) != '\0' && *str == '\0')
+		return (false);
+	if (*pat == *str)
+		return (ft_fnmatch(str + 1, pat + 1));
+	if (*pat == '*')
+		return (ft_fnmatch(str, pat + 1) || ft_fnmatch(str + 1, pat));
+	return (false);
+}
+void	handle_new(t_ast_n *node, int j, char *new)
+{
+	if (new)
+	{
+		ft_free(&node->args[j]);
+		node->args[j] = new;
+	}
+}
+
+void	expander_star(t_ast_n *node, int j, char *pat)
+{
+	DIR				*dir;
+	struct dirent	*entry;
+	char			*new;
+
+	new = NULL;
+	dir = opendir(".");
+	entry = readdir(dir);
+	while (entry != NULL)
+	{
+		if (ft_strncmp(entry->d_name, ".", 1) == 0)
+			entry = readdir(dir);
+		else if (ft_fnmatch(entry->d_name, pat) == true)
+		{
+			if (new != NULL)
+				new = _strfjoin(new, " ");
+			new = _strfjoin(new, entry->d_name);	
+			entry = readdir(dir);
+		}
+		else
+			entry = readdir(dir);
+	}	
+	handle_new(node, j, new);
+	closedir(dir);
+}
+
+static int	in_quote(char *str, char *ch)
+{
+	if (in_squote(str, ch) || in_dquote(str, ch))
+		return (1);
+	return (0);
+}
+
+int	expand_star(t_ast_n *node, int j)
+{
+	int	i;
+
+	i = 0;
+	while (node->args[j][i])
+	{
+		if (node->args[j][i] == '*' && !in_quote(node->args[j], &node->args[j][i]))
+			return (expander_star(node, j, node->args[j]), 1);
+		i++;
+	}
+	return (0);
+}