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# File 'lib/dba/shell.rb', line 6
def run(args=ARGV)
print_usage if args.empty? || args == ['--help']
command_name = args.shift
command = commands[command_name]
if command.nil?
raise DBA::Error, "#{command_name} is not a valid command"
end
command = DBA.const_get(command)
arity = command.instance_method(:call).arity
if arity >= 0 && args.size != arity
raise DBA::Error, "incorrect number of args (given #{args.size}, expected #{arity})"
end
database = DBA::Database.connect
command = command.new(database)
command.call(*args)
rescue DBA::Error => exception
print_error(exception.message)
end
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