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--
-- slack.lua: try to fix up UX when using the Slack IRC gateway
--
-- Copyright (c) 2017, Přemysl Janouch <p@janouch.name>
--
-- Permission to use, copy, modify, and/or distribute this software for any
-- purpose with or without fee is hereby granted.
--
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
-- OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
--
local servers = {}
local read_servers = function (v)
servers = {}
for name in v:lower ():gmatch "[^,]+" do
servers[name] = true
end
end
-- This is a reverse list of Slack's automatic emoji, noseless forms
local unemojify, emoji, emoji_default = false, {}, {
heart = "<3",
broken_heart = "</3",
sunglasses = "8)",
anguished = "D:",
cry = ":'(",
monkey_face = ":o)",
kiss = ":*",
smiley = "=)",
smile = ":D",
wink = ";)",
laughing = ":>",
neutral_face = ":|",
open_mouth = ":o",
angry = ">:(",
slightly_smiling_face = ":)",
disappointed = ":(",
confused = ":/",
stuck_out_tongue = ":p",
stuck_out_tongue_winking_eye = ";p",
}
local load_emoji = function (extra)
emoji = {}
for k, v in pairs (emoji_default) do emoji[k] = v end
for k, v in extra:gmatch "([^,]+) ([^,]+)" do emoji[k] = v end
end
degesch.setup_config {
servers = {
type = "string_array",
default = "\"\"",
comment = "list of server names that are Slack IRC gateways",
on_change = read_servers
},
unemojify = {
type = "boolean",
default = "true",
comment = "convert emoji to normal ASCII emoticons",
on_change = function (v) unemojify = v end
},
extra_emoji = {
type = "string_array",
default = "\"grinning :)),joy :'),innocent o:),persevere >_<\"",
comment = "overrides or extra emoji for unemojify",
on_change = function (v) load_emoji (v) end
}
}
-- We can handle external messages about what we've supposedly sent just fine,
-- so let's get rid of that "[username] some message sent from the web UI" crap
degesch.hook_irc (function (hook, server, line)
local msg, us = degesch.parse (line), server.user
if not servers[server.name] or msg.command ~= "PRIVMSG" or not us
or msg.params[1]:lower () ~= us.nickname:lower () then return line end
-- Taking a shortcut to avoid lengthy message reassembly
local quoted_nick = us.nickname:gsub ("[%^%$%(%)%%%.%[%]%*%+%-%?]", "%%%0")
local text = line:match ("^.- PRIVMSG .- :%[" .. quoted_nick .. "%] (.*)$")
if not text then return line end
return ":" .. us.nickname .. "!" .. server.irc_user_host .. " PRIVMSG "
.. msg.prefix:match "^[^!@]*" .. " :" .. text
end)
-- Unfuck emoji and :nick!nick@irc.tinyspeck.com MODE #channel +v nick : active
degesch.hook_irc (function (hook, server, line)
if not servers[server.name] then return line end
if unemojify then
local start, text = line:match ("^(.- PRIVMSG .-:)(.*)$")
if start then return start .. text:gsub (":([a-z_]+):", function (name)
if emoji[name] then return emoji[name] end
return ":" .. name .. ":"
end) end
end
return line:gsub ("^(:%S+ MODE .+) : .*", "%1")
end)
-- The gateway simply ignores the NAMES command altogether
degesch.hook_input (function (hook, buffer, input)
if not buffer.channel or not servers[buffer.server.name]
or not input:match "^/names%s*$" then return input end
local users = buffer.channel.users
table.sort (users, function (a, b)
if a.prefixes > b.prefixes then return true end
if a.prefixes < b.prefixes then return false end
return a.user.nickname < b.user.nickname
end)
local names = "Users on " .. buffer.channel.name .. ":"
for i, chan_user in ipairs (users) do
names = names .. " " .. chan_user.prefixes .. chan_user.user.nickname
end
buffer:log (names)
end)
degesch.hook_completion (function (hook, data, word)
local chan = degesch.current_buffer.channel
local server = degesch.current_buffer.server
if not chan or not servers[server.name] then return end
-- In /commands there is typically no desire at all to add the at sign
if data.location == 1 and data.words[1]:match "^/" then return end
-- Handle both when the at sign is already there and when it is not
local needle = word:gsub ("^@", ""):lower ()
local t = {}
local try = function (name)
if data.location == 0 then name = name .. ":" end
if name:sub (1, #needle):lower () == needle then
table.insert (t, "@" .. name)
end
end
for _, chan_user in ipairs (chan.users) do
try (chan_user.user.nickname)
end
for _, special in ipairs { "channel", "here" } do
try (special)
end
return t
end)
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