Update "shell-variable" in "manifest.json" for Gnome Extensions

update_gnome_extensions.rb

#!/usr/bin/env ruby

require "json"

# Changes the shell-version variable for all local active extensions
$EXTENSIONS_LIST = eval(`gsettings get org.gnome.shell enabled-extensions`)
if not $EXTENSIONS_LIST.is_a?(Array)
	raise RuntimeError "Cannot read extension list"
end
$SHELL_VERSION  = `gnome-shell --version`
if $SHELL_VERSION =~ /GNOME\s+Shell\s+(\d+\.\d+)\../
	$SHELL_VERSION = $1
else 
	puts $SHELL_VERSION
	raise RuntimeError, "Cannot get gnome-shell version"
end
$EXTENSIONS_LOCATION = "~/.local/share/gnome-shell/extensions/"

# Updates the local manifest file
def update_manifest
	if File.exist? "manifest.json"
		manifest = JSON.parse(IO.read("metadata.json"))
		if not manifest['shell-version'].include?($SHELL_VERSION)
			manifest['shell-version'] += [$SHELL_VERSION]
		end
		File.open("metadata.json", "w") do |f|
			f.write JSON.dump(manifest)
		end
		puts "DONE!"
	else
		puts "Warning: file manifest.json not found. skipping"
	end
end

# Update a single extension
def update_ext(name)
	loc = $EXTENSIONS_LOCATION + name)
	if Dir.exist? loc
		Dir.chdir loc do
			print "Updating #{name}... "
			update_manifest
		end
	else
		puts "Extension #{name} not found, skipping"
	end
end

# MAIN
puts "Updating extensions for version: #{$SHELL_VERSION}"

$EXTENSIONS_LIST.each do |name|
	update_ext(name)
end