97 lines
3.5 KiB
Lua
97 lines
3.5 KiB
Lua
--
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-- slack.lua: try to fix up UX when using the Slack IRC gateway
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--
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-- Copyright (c) 2017, Přemysl Janouch <p.janouch@gmail.com>
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--
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-- Permission to use, copy, modify, and/or distribute this software for any
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-- purpose with or without fee is hereby granted, provided that the above
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-- copyright notice and this permission notice appear in all copies.
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--
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-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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-- OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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--
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local servers = {}
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local read_servers = function (v)
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servers = {}
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for name in v:lower ():gmatch "[^,]+" do
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servers[name] = true
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end
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end
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degesch.setup_config {
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servers = {
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type = "string_array",
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default = "\"\"",
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comment = "list of server names that are Slack IRC gateways",
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on_change = read_servers
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}
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}
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-- We can handle external messages about what we've supposedly sent just fine,
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-- so let's get rid of that "[username] some message sent from the web UI" crap
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degesch.hook_irc (function (hook, server, line)
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local msg, us = degesch.parse (line), server.user
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if not servers[server.name] or msg.command ~= "PRIVMSG" or not us
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or msg.params[1]:lower () ~= us.nickname:lower () then return line end
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-- Taking a shortcut to avoid lengthy message reassembly
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local quoted_nick = us.nickname:gsub ("[%^%$%(%)%%%.%[%]%*%+%-%?]", "%%%0")
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local text = line:match ("^.- PRIVMSG .- :%[" .. quoted_nick .. "%] (.*)$")
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if not text then return line end
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return ":" .. us.nickname .. "!" .. server.irc_user_host .. " PRIVMSG "
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.. msg.prefix:match "^[^!@]*" .. " :" .. text
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end)
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-- Unfuck :nick!nick@irc.tinyspeck.com MODE #channel +v nick : active
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degesch.hook_irc (function (hook, server, line)
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if not servers[server.name] then return line end
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return line:gsub ("^(:%S+ MODE .+) : .*", "%1")
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end)
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-- The gateway simply ignores the NAMES command altogether
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degesch.hook_input (function (hook, buffer, input)
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if not buffer.channel or not servers[buffer.server.name]
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or not input:match "^/names%s*" then return input end
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local users = buffer.channel.users
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table.sort (users, function (a, b)
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if a.prefixes > b.prefixes then return true end
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if a.prefixes < b.prefixes then return false end
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return a.user.nickname < b.user.nickname
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end)
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local names = "Users on " .. buffer.channel.name .. ":"
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for i, chan_user in ipairs (users) do
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names = names .. " " .. chan_user.prefixes .. chan_user.user.nickname
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end
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buffer:log (names)
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end)
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degesch.hook_completion (function (hook, data, word)
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local chan = degesch.current_buffer.channel
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local server = degesch.current_buffer.server
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if not chan or not servers[server.name] then return end
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-- In /commands there is typically no desire at all to add the at sign
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if data.location == 1 and data.words[1]:match "^/" then return end
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-- Handle both when the at sign is already there and when it is not
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local needle = word:gsub ("^@", ""):lower ()
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local t = {}
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for i, chan_user in ipairs (chan.users) do
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local nick = chan_user.user.nickname
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if data.location == 0 then nick = nick .. ":" end
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if nick:sub (1, #needle):lower () == needle then
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table.insert (t, "@" .. nick)
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end
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end
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return t
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end)
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