Diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/util/paths.lua	Fri May 09 19:34:35 2014 +0200
@@ -0,0 +1,38 @@
+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
+
+return path_util;