local t_concat = table.concat;

local path_sep = package.config:sub(1,1);

local path_util = {}

-- Helper function to resolve relative paths (needed by config)

function path_util.resolve_relative_path(parent_path, path)

	if path then

		-- Some normalization

		parent_path = parent_path:gsub("%"..path_sep.."+$", "");

		path = path:gsub("^%.%"..path_sep.."+", "");

		local is_relative;

		if path_sep == "/" and path:sub(1,1) ~= "/" then

			is_relative = true;

		elseif path_sep == "\\" and (path:sub(1,1) ~= "/" and (path:sub(2,3) ~= ":\\" and path:sub(2,3) ~= ":/")) then

			is_relative = true;

		end

		if is_relative then

			return parent_path..path_sep..path;

		end

	end

	return path;

end

-- Helper function to convert a glob to a Lua pattern

function path_util.glob_to_pattern(glob)

	return "^"..glob:gsub("[%p*?]", function (c)

		if c == "*" then

			return ".*";

		elseif c == "?" then

			return ".";

		else

			return "%"..c;

		end

	end).."$";

end

function path_util.join(...)

	return t_concat({...}, path_sep);

end

return path_util;