59 lines
1.3 KiB
Ruby
59 lines
1.3 KiB
Ruby
module Uh
|
|
module WM
|
|
class CLI
|
|
ArgumentError = Class.new(ArgumentError)
|
|
|
|
USAGE = "Usage: #{File.basename $0} [options]".freeze
|
|
|
|
EX_USAGE = 64
|
|
|
|
class << self
|
|
def run arguments, **options
|
|
cli = new arguments, **options
|
|
cli.parse_arguments!
|
|
cli.run
|
|
rescue ArgumentError => e
|
|
$stderr.puts e
|
|
exit EX_USAGE
|
|
end
|
|
end
|
|
|
|
def initialize args, stdin: $stdin, stdout: $stdout, stderr: $stderr
|
|
@arguments = args
|
|
@stdin = stdin
|
|
@stdout = stdout
|
|
@stderr = stderr
|
|
end
|
|
|
|
def parse_arguments!
|
|
option_parser.parse! @arguments
|
|
rescue OptionParser::InvalidOption => e
|
|
fail ArgumentError, option_parser
|
|
end
|
|
|
|
def run
|
|
@stdout.sync = true
|
|
@display = Display.new
|
|
@display.open
|
|
@stdout.puts "Connected to X server on `#{@display}'"
|
|
end
|
|
|
|
|
|
private
|
|
|
|
def option_parser
|
|
OptionParser.new do |opts|
|
|
opts.banner = USAGE
|
|
opts.separator ''
|
|
opts.separator 'options:'
|
|
|
|
opts.on '-h', '--help', 'print this message' do
|
|
@stdout.print opts
|
|
exit
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|