epan/wslua/console.lua

   1 -- console
   2 -- A console and a window to execute commands in lua
   3 --
   4 -- (c) 2006 Luis E. Garcia Ontanon <luis@ontanon.org>
   5 --
   6 -- $Id$
   7 --
   8 -- Wireshark - Network traffic analyzer
   9 -- By Gerald Combs <gerald@wireshark.org>
  10 -- Copyright 1998 Gerald Combs
  11 --
  12 -- This program is free software; you can redistribute it and/or
  13 -- modify it under the terms of the GNU General Public License
  14 -- as published by the Free Software Foundation; either version 2
  15 -- of the License, or (at your option) any later version.
  16 --
  17 -- This program is distributed in the hope that it will be useful,
  18 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 -- GNU General Public License for more details.
  21 --
  22 -- You should have received a copy of the GNU General Public License
  23 -- along with this program; if not, write to the Free Software
  24 -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  25
  26
  27 if (gui_enabled()) then
  28         -- Note that everything is "local" to this "if then"
  29         -- this way we don't add globals
  30
  31         -- Evaluate Window
  32         local function evaluate_lua()
  33                 local w = TextWindow.new("Evaluate Lua")
  34                 w:set_editable()
  35
  36                 -- button callback
  37                 local function eval()
  38                         -- get the window's text and remove the result
  39                         local text = string.gsub(w:get_text(),"%c*--%[%[.*--%]%]$","")
  40
  41                         -- if the text begins with '=' then convert = into return
  42                         text = string.gsub(text,"^=","return ")
  43
  44                         -- evaluate text
  45                         local result = assert(loadstring(text))()
  46
  47                         if (result ~= nil) then
  48                                 w:set(text .. '\n\n--[[ Result:\n' .. result .. '\n--]]')
  49                         else
  50                                 w:set(text .. '\n\n--[[  Evaluated --]]')
  51                         end
  52                 end
  53
  54            w:add_button("Evaluate",eval)
  55         end
  56
  57         local console_open = false
  58
  59         local date = rawget(os,"date") -- use rawget to avoid disabled's os.__index
  60
  61         if type(date) ~= "function" then
  62                 -- 'os' has been disabled, use a dummy function for date
  63                 date = function() return "" end
  64         end
  65
  66         -- Console Window
  67         local function run_console()
  68                 if console_open then return end
  69                 console_open = true
  70
  71                 local w = TextWindow.new("Console")
  72
  73                 -- save original logger functions
  74                 local orig = {
  75                         critical = critical,
  76                         warn = warn,
  77                         message = message,
  78                         info = info,
  79                         debug = debug
  80                 }
  81
  82                 -- define new logger functions that append text to the window
  83                 function critical(x)  w:append( date() .. " CRITICAL: " .. tostring(x) .. "\n") end
  84                 function warn(x)  w:append( date() .. " WARN: " .. tostring(x) .. "\n") end
  85                 function message(x)  w:append( date() .. " MESSAGE: " .. tostring(x) .. "\n") end
  86                 function info(x)  w:append( date() .. " INFO: " .. tostring(x) .. "\n") end
  87                 function debug(x)  w:append( date() .. " DEBUG: " .. tostring(x) .. "\n") end
  88
  89                 -- when the window gets closed restore the original logger functions
  90                 local function at_close()
  91                         critical = orig.critical
  92                         warn = orig.warn
  93                         message = orig.message
  94                         info = orig.info
  95                         debug = orig.debug
  96
  97                         console_open = false
  98                 end
  99
 100                 w:set_atclose(at_close)
 101                 info("Console opened")
 102         end
 103
 104         function ref_manual()
 105                 browser_open_url("http://www.wireshark.org/docs/wsug_html_chunked/wsluarm.html")
 106         end
 107
 108         function wiki_page()
 109                 browser_open_url("http://wiki.wireshark.org/Lua")
 110         end
 111
 112         register_menu("Lua/Evaluate", evaluate_lua, MENU_TOOLS_UNSORTED)
 113         register_menu("Lua/Console", run_console, MENU_TOOLS_UNSORTED)
 114         register_menu("Lua/Manual", ref_manual, MENU_TOOLS_UNSORTED)
 115         register_menu("Lua/Wiki", wiki_page, MENU_TOOLS_UNSORTED)
 116 end