external resource loading, window.location, tab icon fix

flumi/Scripts/Utils/URLUtils.gd

@@ -0,0 +1,62 @@
+class_name URLUtils
+extends RefCounted
+
+static func resolve_url(base_url: String, relative_url: String) -> String:
+	# If relative_url is already absolute, return it as-is
+	if relative_url.begins_with("http://") or relative_url.begins_with("https://") or relative_url.begins_with("gurt://"):
+		return relative_url
+	
+	# If empty, treat as relative to current domain
+	if base_url.is_empty():
+		return relative_url
+	
+	var clean_base = base_url.rstrip("/")
+	
+	# Parse scheme and host
+	var scheme_end = clean_base.find("://")
+	if scheme_end == -1:
+		return relative_url
+	
+	var scheme = clean_base.substr(0, scheme_end + 3)
+	var remainder = clean_base.substr(scheme_end + 3)
+	
+	# Split remainder into host and path
+	var first_slash = remainder.find("/")
+	var host = ""
+	var current_path_parts = []
+	
+	if first_slash == -1:
+		# No path in base URL, just host
+		host = remainder
+	else:
+		host = remainder.substr(0, first_slash)
+		var path = remainder.substr(first_slash + 1)
+		if not path.is_empty():
+			current_path_parts = path.split("/")
+	
+	var final_path_parts = []
+	
+	if relative_url.begins_with("/"):
+		# Absolute path from root
+		var href_path = relative_url.substr(1) if relative_url.length() > 1 else ""
+		if not href_path.is_empty():
+			final_path_parts = href_path.split("/")
+	else:
+		# Relative path
+		final_path_parts = current_path_parts.duplicate()
+		
+		var href_parts = relative_url.split("/")
+		for part in href_parts:
+			if part == "..":
+				if final_path_parts.size() > 0:
+					final_path_parts.pop_back()
+			elif part == "." or part == "":
+				continue
+			else:
+				final_path_parts.append(part)
+	
+	var result = scheme + host
+	if final_path_parts.size() > 0:
+		result += "/" + "/".join(final_path_parts)
+	
+	return result