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---
-- Implementation of IRC server message parsing
-- initialization {{{
local base = _G
local constants = require 'irc.constants'
local ctcp = require 'irc.ctcp'
local irc_debug = require 'irc.debug'
local misc = require 'irc.misc'
local socket = require 'socket'
local string = require 'string'
local table = require 'table'
-- }}}
---
-- This module contains parsing functions for IRC server messages.
module 'irc.message'
-- internal functions {{{
-- _parse {{{
--
-- Parse a server command.
-- @param str Command to parse
-- @return Table containing the parsed message. It contains:
-- <ul>
-- <li><i>from:</i> The source of this message, in full usermask
-- form (nick!user@host) for messages originating
-- from users, and as a hostname for messages from
-- servers</li>
-- <li><i>command:</i> The command sent, in name form if possible,
-- otherwise as a numeric code</li>
-- <li><i>args:</i> Array of strings corresponding to the arguments
-- to the received command</li>
--
-- </ul>
function _parse(str)
-- low-level ctcp quoting {{{
str = ctcp._low_dequote(str)
-- }}}
-- parse the from field, if it exists (leading :) {{{
local from = ""
if str:sub(1, 1) == ":" then
local e
e, from = socket.skip(1, str:find("^:([^ ]*) "))
str = str:sub(e + 1)
end
-- }}}
-- get the command name or numerical reply value {{{
local command, argstr = socket.skip(2, str:find("^([^ ]*) ?(.*)"))
local reply = false
if command:find("^%d%d%d$") then
reply = true
if constants.replies[base.tonumber(command)] then
command = constants.replies[base.tonumber(command)]
else
irc_debug._warn("Unknown server reply: " .. command)
end
end
-- }}}
-- get the args {{{
local args = misc._split(argstr, " ", ":")
-- the first arg in a reply is always your nick
if reply then table.remove(args, 1) end
-- }}}
-- return the parsed message {{{
return {from = from, command = command, args = args}
-- }}}
end
-- }}}
-- }}}
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