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|
---
-- Basic debug output
-- initialization {{{
local base = _G
local io = require 'io'
-- }}}
---
-- This module implements a few useful debug functions for use throughout the
-- rest of the code.
module 'irc.debug'
-- defaults {{{
COLOR = true
-- }}}
-- local variables {{{
local ON = false
local outfile = io.output()
-- }}}
-- internal functions {{{
-- _message {{{
--
-- Output a debug message.
-- @param msg_type Arbitrary string corresponding to the type of message
-- @param msg Message text
-- @param color Which terminal code to use for color output (defaults to
-- dark gray)
function _message(msg_type, msg, color)
if ON then
local endcolor = ""
if COLOR and outfile == io.stdout then
color = color or "\027[1;30m"
endcolor = "\027[0m"
else
color = ""
endcolor = ""
end
outfile:write(color .. msg_type .. ": " .. msg .. endcolor .. "\n")
end
end
-- }}}
-- _err {{{
--
-- Signal an error. Writes the error message to the screen in red and calls
-- error().
-- @param msg Error message
-- @see error
function _err(msg)
_message("ERR", msg, "\027[0;31m")
base.error(msg, 2)
end
-- }}}
-- _warn {{{
--
-- Signal a warning. Writes the warning message to the screen in yellow.
-- @param msg Warning message
function _warn(msg)
_message("WARN", msg, "\027[0;33m")
end
-- }}}
-- }}}
-- public functions {{{
-- enable {{{
---
-- Turns on debug output.
function enable()
ON = true
end
-- }}}
-- disable {{{
---
-- Turns off debug output.
function disable()
ON = false
end
-- }}}
-- set_output {{{
---
-- Redirects output to a file rather than stdout.
-- @param file File to write debug output to
function set_output(file)
outfile = base.assert(io.open(file))
end
-- }}}
-- }}}
|
