Add script to list Lua scripts for a html news page.

tools/list_scripts.lua

@@ -0,0 +1,36 @@
+#!/usr/bin/lua5.3
+
+top = arg[1] or "./"
+
+function scripts ()
+	local out = io.popen (
+		string.format ("find '%s' -maxdepth 1 -type f -iname \"[^_]*.lua\" 2>/dev/null | grep -v '/s_'", top .. "share/scripts/")
+	)
+	return function()
+		for file in out:lines() do
+			return file
+		end 
+		return nil
+	end
+end
+
+function list_script_types (h, t)
+	function ardour (v)
+		if v['type'] == t then
+			print ("<dt>" .. v['name'] .. "<dt><dd>" .. v['description'] .. "</dd>")
+		end
+	end
+
+	print ("<h2>" .. h .. "</h2>")
+	print ("<dl>")
+	for script in scripts () do
+		loadfile (script)()
+	end
+	print ("</dl>")
+end
+
+list_script_types ("DSP Plugins", "dsp")
+list_script_types ("Session Wide Realtime", "session")
+list_script_types ("Editor Actions", "EditorAction")
+list_script_types ("Editor Callbacks", "EditorHook")
+list_script_types ("Session Templates", "SessionInit")