introduce Neutrino Lua API bridge ...

to allow shellscripts access the neutrino lua api

Usage:

--- cut ---
!/bin/sh

PATH=$PATH:/usr/share/tuxbox/neutrino/luaplugins

CONFIGDIR=$(nlab.lua get dir.configdir)
echo "CONFIGDIR: $CONFIGDIR"
--- cut ---


Origin commit data
------------------
Branch: ni/coolstream
Commit: 4fffc835c1
Author: vanhofen <vanhofen@gmx.de>
Date: 2021-10-23 (Sat, 23 Oct 2021)

Origin message was:
------------------
- introduce Neutrino Lua API bridge ...

to allow shellscripts access the neutrino lua api

Usage:

--- cut ---
!/bin/sh

PATH=$PATH:/usr/share/tuxbox/neutrino/luaplugins

CONFIGDIR=$(nlab.lua get dir.configdir)
echo "CONFIGDIR: $CONFIGDIR"
--- cut ---


------------------
This commit was generated by Migit

configure.ac

@@ -430,6 +430,7 @@ data/lcd/clock/Makefile
 data/lcd/icons/Makefile
 data/license/Makefile
 data/locale/Makefile
+data/luaplugins/Makefile
 data/oled/Makefile
 data/oled/fonts/Makefile
 data/oled/icons/Makefile

data/Makefile.am

@@ -17,6 +17,11 @@ SUBDIRS = \
 	y-web \
 	zapit
 
+if ENABLE_LUA
+SUBDIRS += \
+	luaplugins
+endif
+
 if ENABLE_GRAPHLCD
 SUBDIRS += \
 	oled

data/luaplugins/Makefile.am

@@ -0,0 +1,4 @@
+installdir = $(LUAPLUGINDIR)
+
+install_SCRIPTS = \
+	nlab.lua

data/luaplugins/nlab.lua

@@ -0,0 +1,145 @@
+#!/usr/bin/luaclient
+
+--[[
+	nlab - Neutrino Lua API bridge
+
+	Copyright (C) 2021 Sven Hoefer <svenhoefer@svenhoefer.com>
+]]
+
+nlab = "Neutrino Lua API bridge"
+version = "0.01"
+
+a = {}
+r = ""
+
+if arg[2] == nil then
+	r = nlab .. " v" .. version
+end
+
+for i, v in ipairs(arg) do
+	a[i] = v:lower()
+end
+
+if a[2] == "get" then
+	-- see src/gui/lua/luainstance.cpp
+
+	if a[3] == "apiversion" then
+		r = APIVERSION.MAJOR .. "." .. APIVERSION.MINOR
+	elseif a[3] == "apiversion.major" then
+		r = APIVERSION.MAJOR
+	elseif a[3] == "apiversion.minor" then
+		r = APIVERSION.MINOR
+
+	elseif a[3] == "dir.configdir" then
+		r = DIR.CONFIGDIR
+	elseif a[3] == "dir.zapitdir" then
+		r = DIR.ZAPITDIR
+	elseif a[3] == "dir.datadir" then
+		r = DIR.DATADIR
+	elseif a[3] == "dir.datadir_var" then
+		r = DIR.DATADIR_VAR
+	elseif a[3] == "dir.controldir" then
+		r = DIR.CONTROLDIR
+	elseif a[3] == "dir.controldir_var" then
+		r = DIR.CONTROLDIR_VAR
+	elseif a[3] == "dir.fontdir" then
+		r = DIR.FONTDIR
+	elseif a[3] == "dir.fontdir_var" then
+		r = DIR.FONTDIR_VAR
+	elseif a[3] == "dir.libdir" then
+		r = DIR.LIBDIR
+	elseif a[3] == "dir.gamesdir" then
+		r = DIR.GAMESDIR
+	elseif a[3] == "dir.iconsdir" then
+		r = DIR.ICONSDIR
+	elseif a[3] == "dir.iconsdir_var" then
+		r = DIR.ICONSDIR_VAR
+	elseif a[3] == "dir.localedir" then
+		r = DIR.LOCALEDIR
+	elseif a[3] == "dir.localedir_var" then
+		r = DIR.LOCALEDIR_VAR
+	elseif a[3] == "dir.plugindir" then
+		r = DIR.PLUGINDIR
+	elseif a[3] == "dir.plugindir_mnt" then
+		r = DIR.PLUGINDIR_MNT
+	elseif a[3] == "dir.plugindir_var" then
+		r = DIR.PLUGINDIR_VAR
+	elseif a[3] == "dir.luaplugindir" then
+		r = DIR.LUAPLUGINDIR
+	elseif a[3] == "dir.luaplugindir_var" then
+		r = DIR.LUAPLUGINDIR_VAR
+	elseif a[3] == "dir.themesdir" then
+		r = DIR.THEMESDIR
+	elseif a[3] == "dir.themesdir_var" then
+		r = DIR.THEMESDIR_VAR
+	elseif a[3] == "dir.webradiodir" then
+		r = DIR.WEBRADIODIR
+	elseif a[3] == "dir.webradiodir_var" then
+		r = DIR.WEBRADIODIR_VAR
+	elseif a[3] == "dir.webtvdir" then
+		r = DIR.WEBTVDIR
+	elseif a[3] == "dir.webtvdir_var" then
+		r = DIR.WEBTVDIR_VAR
+	elseif a[3] == "dir.logodir" then
+		r = DIR.LOGODIR
+	elseif a[3] == "dir.logodir_var" then
+		r = DIR.LOGODIR_VAR
+	elseif a[3] == "dir.private_httpddir" then
+		r = DIR.PRIVATE_HTTPDDIR
+	elseif a[3] == "dir.public_httpddir" then
+		r = DIR.PUBLIC_HTTPDDIR
+	elseif a[3] == "dir.hosted_httpddir" then
+		r = DIR.HOSTED_HTTPDDIR
+	elseif a[3] == "dir.flagdir" then
+		r = DIR.FLAGDIR
+
+	elseif a[3] == "screen.off_x" then
+		r = SCREEN.OFF_X
+	elseif a[3] == "screen.off_y" then
+		r = SCREEN.OFF_Y
+	elseif a[3] == "screen.end_x" then
+		r = SCREEN.END_X
+	elseif a[3] == "screen.end_y" then
+		r = SCREEN.END_Y
+	elseif a[3] == "screen.x_res" then
+		r = SCREEN.X_RES
+	elseif a[3] == "screen.y_res" then
+		r = SCREEN.Y_RES
+
+	elseif a[3] == "postmsg.standby_on" then
+		r = POSTMSG.STANDBY_ON
+	end
+
+elseif a[2] == "misc" then
+	-- see src/gui/lua/lua_misc.cpp
+
+	misc = misc.new()
+	if a[3] == "postmsg.standby_on" then
+		r = misc:postMsg(POSTMSG.STANDBY_ON)
+	elseif a[3] == "getvolume" then
+		r = misc:getVolume()
+	elseif a[3] == "setvolume" and a[4] ~= nil then
+		r = misc:setVolume(a[4])
+	elseif a[3] == "ismuted" then
+		r = misc:isMuted()
+	elseif a[3] == "getrevision" then
+		r = misc:GetRevision()
+	end
+	misc = nil
+
+--[[ FIXME: won't work
+elseif a[2] == "video" then
+	-- see src/gui/lua/lua_video.cpp
+
+	video = video.new()
+	if a[3] == "showpicture" and a[4] ~= nil then
+		r = video:ShowPicture(a[4])
+	elseif a[3] == "stoppicture" then
+		r = video:StopPicture()
+	end
+]]
+end
+
+if r ~= nil and r ~= "" then
+	return tostring(r) .. "\n"
+end