prh: Some examples using os.execute - in this case driving i3 window manager shortcuts and system volumes

Author: Paul Hedderly

configs/i3msg.lua

@@ -0,0 +1,75 @@
+--Simple lua OS examples by Paul Hedderly
+-- PREREQUISITES:
+-- 	luarocks install luasocket # optional if you will use your own connectors (see below)
+-- 	luarocks install luabitop  # you don't need this for lua 5.3
+-- 	luarocks install luasec    # you don't need this if you don't want to use SSL connections
+-- 	luarocks install luamqtt
+
+-- Example - A lot of these will depend on other configs and will need to be localised
+-- 	[lua i3msg]
+--	script = confgs/i3msg.lua
+--	default-handler = i3msg
+--
+--		nanomap.{1..10} > i3msg.workspace.{1..10} -- Jump to i3 workspace
+--		nanomap.10 > i3msg.muteall
+--		nanomap.11 > i3msg.run.pasink
+--		nanomap.12 > i3msg.showhide.retext
+--		nanomap.13 > i3msg.showhide.paprefs
+--		nanomap.14 > i3msg.showhide.pavucontrol
+--		nanomap.15 > i3msg.showhide.keepassxc
+--		nanomap.16 > i3msg.showhide.microsoft teams - insiders
+
+--		trackpad.gestureoo852 > i3msg.macro.volup -- see my trackpad.lua example
+--		trackpad.gestureoo25> i3msg.macro.voldown
+
+function i3msg(v) -- Use a default function - then you can use any input channel name
+
+    m=0.31
+    M=0.99
+    A = - M*m^2 / (M^2 - 2*m*M)
+    B = M*m^2 / (M^2 - 2*m*M)
+    C = math.log((M - m)^2 / m^2)
+    inchan=input_channel()
+    first=inchan:gsub("%..*","")
+    last=inchan:gsub('^.-%.',"")
+
+    if (v==0) then return; end -- Here were do not care that the control was released
+
+    if (inchan == "macro.myadminpass") then
+	    os.execute("/home/user/bin/macroscripttotypemyadminpassword")
+
+    elseif (first == "workspace") then
+	    -- print("i3-msg workspace number "..last)
+	    os.execute("i3-msg workspace number "..last)
+
+    elseif (first=="showhide") then
+	    os.execute("i3-msg '[instance=\""..last.."\"] scratchpad show;'")
+
+    elseif (inchan=="macro.volup") then
+	    os.execute("pactl set-sink-volume 0 +5%")
+
+    elseif (inchan=="macro.voldown") then
+	    os.execute("pactl set-sink-volume 0 -10%")
+
+    elseif (first=="sinkvol") then
+	    os.execute("pactl set-sink-volume "..last.." "..math.floor(100*(A+B*math.exp(C*v))).."%")
+
+    elseif (first=="vol") then
+	    os.execute("pactl set-sink-volume "..last.." "..v)
+	    
+    elseif (first=="srcvol") then
+	    os.execute("pactl set-source-volume "..last.." "..math.floor(100*(A+B*math.exp(C*v))).."%")
+
+    elseif (first=="dsink") then
+	    os.execute("pactl set-default-sink "..last)
+
+    elseif (first=="dsrc") then
+	    os.execute("pactl set-default-source "..last)
+
+    elseif (first=="muteall") then
+	    os.execute("~/bin/muteall")
+
+    else
+	    print("i3msg-notfound:"..first.." L:"..last.." v:"..v)
+    end
+end