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-- cmus_announce.lua - Announce currently playing file in cmus to channel
--[[
BSD Zero Clause License
iCopyright © 2024-2024 by <khwerz+weechat@gmail.com>
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.
--]]
--[[
NOTE!
cmus-remote could hang if you don't have mpris installed giving you a warning at the beginning
Design
A defaultFormat is passed to cmus format_print, output is absorbed and s/\n/ /
be aware that spaces in cmus become newlines, so s/\n/ / is used
string.sub is run to limit the output
TODO
Probably add/support colors %{red} and so on
defaultFormat should be more colorful, with some emojis
--]]
local defaultFormat = "%{artist} - %{album} - %{title}"
local msgLimit = 250
local
io, string, os
=
io, string, os
local Gsub = string.gsub
local ShellArgS = function -- string
(
cmdS -- string
)
return "'" .. Gsub(cmdS, "'","'\\''") .. "'"
end
local ExistsB, Exists do
local Rename = os.rename
ExistsB = function(fileS)
-- returns true/false if fileS exists
local B, _, code = Rename(fileS,fileS)
return B or code==13
end
-- returns fileS if fileS exists or falsy
Exists = function(fileS)
return ExistsB(fileS) and fileS
end
end
local Getenv = os.getenv
local XDG_RUNTIME_DIR =
Getenv"XDG_RUNTIME_DIR"
or "/run/nmz"
local cmusSocketFile = Getenv"CMUS_SOCKET"
local IsAlive = function ()
if cmusSocketFile then
return ExistsB(cmusSocketFile)
end
cmusSocketFile = Exists(XDG_RUNTIME_DIR .. "/cmus-socket")
return cmusSocketFile
end
-- Get Current Song
local Current = function -- string
(
format -- string|falsy
)
format = format or defaultFormat
local arg = ShellArgS("format_print " .. format)
local S
do
local H = io.popen("cmus-remote -C " .. arg)
S = H:read"a"
H:close()
end
return S or ""
end
-- displays filename if nothing useful returns
local Display = function -- string
(
format -- string|nil
)
local msg = Current(format)
-- if Current is empty, then just print {path}
if not msg:match"[%ul]+" then
msg = Current"%{filename}"
end
msg =
Gsub(msg or "", "%s+"," ")
:gsub("^%s+","")
:gsub("%s+$","")
-- spaces turn into newlines, this reverses that
return msg
end
if weechat then --------------------------- Weechat Section
local w = weechat
do local name, author, version, license, description, shutdown_function, charset
name = "cmus_announce"
author = "nmz"
version = "1"
license = "0BSD"
description = "Messages current buffer/channel the currently listened to song"
charset = ""
shutdown_function = ""
w.register(name, author, version, license, description, shutdown_function, charset)
end
-- semi global variables
local OK,ERR = w.WEECHAT_RC_OK, w.WEECHAT_RC_ERROR
local Sub = string.sub
-- data, buffer, args(string)
function cmus_announce(d,b,a)
if IsAlive() then
local msg = Sub(Display(a:match"%%{%g+}" and a),1,msgLimit) -- BUG: if its utf8 this might cut the last byte
w.command(b, "/me Is Listening To: " .. msg)
else
w.print("","cmus_announce.lua: cmus is not running!")
-- return ERR
end
return OK
end
-- should be a /me
do
local command = "cmus_announce"
local description = 'Announces currently playing song in current buffer'
local args = 'format'
local args_description =
"passed to cmus-remote command, so look at cmus(1) for the relevant formatting"
local completion = ""
local callback = command
local callback_data = ""
w.hook_command(command, description, args, args_description, completion, callback, callback_data)
end
return OK
end -- weechat
-- This is also a program which you can run as well.
-- run it to test it.
if ...==nil then
if IsAlive() then
print(os.date())
print(Display())
os.exit(0)
end
os.exit(1)
end
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