lib/agig/optparse.rb
require "optparse"
module Agig::OptParser
def self.parse!(argv)
opts = {
port: 16705,
host: "localhost",
interval: 30,
log: nil,
debug: false,
foreground: false,
}
OptionParser.new do |parser|
parser.instance_eval do
self.banner = "Usage: #{$0} [opts]"
separator ""
separator "Options:"
on("-p", "--port [PORT=#{opts[:port]}]", "port number to listen") do |port|
opts[:port] = port
end
on("-h", "--host [HOST=#{opts[:host]}]", "host name or IP address to listen") do |host|
opts[:host] = host
end
on("-i", "--interval [INTERVAL=#{opts[:interval]}]", "set a retrieving interval") do |interval|
opts[:interval] = interval
end
on("-l", "--log LOG", "log file") do |log|
opts[:log] = log
end
on("-d", "--debug", "Enable debug mode") do |debug|
opts[:log] = $stdout
opts[:debug] = true
end
on("-f", "--foreground", "run foreground") do |foreground|
opts[:log] = $stdout
opts[:foreground] = true
end
parse!(argv)
end
end
self.cast opts
end
def self.cast(opts)
opts.inject({}) {|r, i|
key, value = i[0], i[1]
r.update key => case value
when nil then false
when /\A\d+\z/ then value.to_i
when /\A(?:\d+\.\d*|\.\d+)\z/ then value.to_f
else value
end
}
end
end