net.unbound: Show canonical name in textual format (e.g. in shell)
libunbound does not tell us the whole chain of CNAMEs, only the final
canonical name.
This is to aid in debugging since it will only be shown in the shell.
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(a, b, c, ...) -- (... : string) --> string
-- Optimization: Avoid creating table for most uses
if b then
if c then
if ... then
return t_concat({a,b,c,...}, path_sep);
end
return a..path_sep..b..path_sep..c;
end
return a..path_sep..b;
end
return a;
end
function path_util.complement_lua_path(installer_plugin_path)
-- Checking for duplicates
-- The commands using luarocks need the path to the directory that has the /share and /lib folders.
local lua_version = _VERSION:match(" (.+)$");
local lua_path_sep = package.config:sub(3,3);
local dir_sep = package.config:sub(1,1);
local sub_path = dir_sep.."lua"..dir_sep..lua_version..dir_sep;
if not string.find(package.path, installer_plugin_path, 1, true) then
package.path = package.path..lua_path_sep..installer_plugin_path..dir_sep.."share"..sub_path.."?.lua";
package.path = package.path..lua_path_sep..installer_plugin_path..dir_sep.."share"..sub_path.."?"..dir_sep.."init.lua";
end
if not string.find(package.path, installer_plugin_path, 1, true) then
package.cpath = package.cpath..lua_path_sep..installer_plugin_path..dir_sep.."lib"..sub_path.."?.so";
end
end
return path_util;