-----------------------------------------------------------------------------
-- Xavante URL patterns handler
--
-- Authors: Fabio Mascarenhas
-- Copyright (c) 2006 Kepler Project
--
-- $Id: patternhandler.lua,v 1.2 2008/03/10 23:38:31 mascarenhas Exp $
-----------------------------------------------------------------------------

local httpd = require "xavante.httpd"

local function match_url (req, conf)
  local path = req.relpath
  for _, rule in ipairs(conf) do
    for _, pat in ipairs(rule.pattern) do
      local cap = { string.match(path, pat) }
      if #cap > 0 then
        req.handler = rule.handler
        return cap
      end
    end
  end
end

return function (conf)
         if not conf or type (conf) ~= "table" then return nil end

         return function (req, res)
                  local cap = match_url (req, conf) or {}
                  local h = req.handler or httpd.err_404
                  return h (req, res, cap)
                end
       end