From: Nicola Tiling <nti@...4w.net>
Date: 2010-05-25T18:17:37+09:00
Subject: Re: Need help to decode snmp string

Thanks! Life could be so easy ...


Am 23.05.2010 um 18:51 schrieb Brian Candler:

> Nicola Tiling wrote:
>> The output is like this
>> 
>> "\000\001\000\004\000\005\000\006\000\f"
>> "\000\001\000\f"
>> "\000\001\000\002\000\005\000\006\000\a\000\b\000\v\000\f\000\r"
>> "\000\001"
>> 
>> But I want to decode this output to integer vlan id's.
>> 
>> 1,4,5,6,12
>> 1,12
>> 1,2,5,6,7,8,11,12,13
>> 1
>> 
>> How can I do it with methodes from the snmp library?
> 
> I don't know much about the SNMP library. However:
> 
> irb(main):002:0> "\000\001\000\004\000\005\000\006\000\f".unpack("n*")
> => [1, 4, 5, 6, 12]
> 
>> Also I don't understand why "f" stands for "12" and "v" for "11" and "r" 
>> for "13"
> 
> \v is an escape for "vertical tab", \f is an escape for "form feed", and 
> \r is "carriage return". These are ASCII characters with codes 11, 12 
> and 13 respectively.
> 
> irb(main):006:0> "\f"[0]
> => 12
> 
> [ruby 1.8, use ord for ruby 1.9]
> 
> -- 
> Posted via http://www.ruby-forum.com/.
>