Write the psql command for a .env line in URL format.

psql.rb

#!ruby
# Usage:
# ruby psql.rb <VAR_NAME>
#
require 'URI'

name = ARGV[0]
starts_with_name = Regexp.new('^' + name)

uri = nil
File.open('.env') do |file|
  file.each do |line|
    if line =~ starts_with_name
      uri = URI.parse(line.split('=')[1])
    end
  end
end

port_part = " -p #{uri.port}" if uri.port != 5432
puts "psql -h #{uri.host} -U #{uri.user}#{port_part} #{uri.path.sub(/^\//, '')}"