mod_query/mod_query_chdir.lua

   1 --
   2 -- ion/query/mod_query_chdir.lua
   3 --
   4 -- Copyright (c) Tuomo Valkonen 2004-2009.
   5 --
   6 -- See the included file LICENSE for details.
   7 --
   8
   9 local function simplify_path(path)
  10     local npath=string.gsub(path, "([^/]+)/+%.%./+", "")
  11     if npath~=path then
  12         return simplify_path(npath)
  13     else
  14         return string.gsub(string.gsub(path, "([^/]+)/+%.%.$", ""), "/+", "/")
  15     end
  16 end
  17
  18 local function relative_path(path)
  19     return not string.find(path, "^/")
  20 end
  21
  22 local function empty_path(path)
  23     return (not path or path=="")
  24 end
  25
  26 local function ws_chdir(mplex, params)
  27     local nwd=params[1]
  28
  29     ws=assert(ioncore.find_manager(mplex, "WGroupWS"))
  30
  31     if not empty_path(nwd) and relative_path(nwd) then
  32         local owd=ioncore.get_dir_for(ws)
  33         if empty_path(owd) then
  34             owd=os.getenv("PWD")
  35         end
  36         if owd then
  37             nwd=owd.."/"..nwd
  38         end
  39     end
  40     local ok, err=ioncore.chdir_for(ws, nwd and simplify_path(nwd))
  41     if not ok then
  42         mod_query.warn(mplex, err)
  43     end
  44 end
  45
  46 local function ws_showdir(mplex, params)
  47     local dir=ioncore.get_dir_for(mplex)
  48     if empty_path(dir) then
  49         dir=os.getenv("PWD")
  50     end
  51     mod_query.message(mplex, dir or "(?)")
  52 end
  53
  54 mod_query.defcmd("cd", ws_chdir)
  55 mod_query.defcmd("pwd", ws_showdir)