Come up with sillier names for the binaries

I'm not entirely sure, but it looks like some people might not like
jokes about the Holocaust.

On a more serious note, the project has become more serious over
the 7 or so years of its existence.

1 files changed, 147 insertions, 0 deletions

diff --git a/plugins/xC/slack.lua b/plugins/xC/slack.lua
new file mode 100644
index 0000000..c1a08de
--- /dev/null
+++ b/plugins/xC/slack.lua
@@ -0,0 +1,147 @@
+--
+-- slack.lua: try to fix up UX when using the Slack IRC gateway
+--
+-- Copyright (c) 2017, Přemysl Eric 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
+
+xC.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
+xC.hook_irc (function (hook, server, line)
+	local msg, us = xC.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
+xC.hook_irc (function (hook, server, line)
+	if not servers[server.name] then return line end
+	if unemojify then
+		local start, text = line:match ("^(.- PRIVMSG .- :)(.*)$")
+		if start then return start .. text:gsub (":([a-z_]+):", function (name)
+			if emoji[name] then return emoji[name] end
+			return ":" .. name .. ":"
+		end) end
+	end
+	return line:gsub ("^(:%S+ MODE .+) : .*", "%1")
+end)
+
+-- The gateway simply ignores the NAMES command altogether
+xC.hook_input (function (hook, buffer, input)
+	if not buffer.channel or not servers[buffer.server.name]
+		or not input:match "^/names%s*$" 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)
+
+xC.hook_completion (function (hook, data, word)
+	local chan = xC.current_buffer.channel
+	local server = xC.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)