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Posted to dev@karaf.apache.org by Dominik Marciniszyn <ma...@gmail.com> on 2017/05/30 09:28:03 UTC

Own Karaf commands customization

Hi,

I would like to customize commands created by myself. Some of this commands
returns a lot of information. So I have two questions:

1. How could I creating custom coloring of my commands?
2. How could I create limitations of displaying results on the console? I
would like do mechanism like in Karaf shell - "karaf@root()> Display all 294
possibilities? (y or n)"

Thank You for help or advice,
Dominik Marciniszyn



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Re: Own Karaf commands customization

Posted by Guillaume Nodet <gn...@apache.org>.

2017-05-30 13:36 GMT+02:00 Jean-Baptiste Onofré <jb...@nanthrax.net>:

> Hi Dominik,
>
> 1. When you do the System.out you can use color scheme/code. To simplify
> this you can use Ansi utils, doing something like:
>
> Ansi.ansi(output).fg(Ansi.Color.RED).a("foo").a("bar").reset();
>

You can also use jline's AttributedStringBuilder or jansi AnsiRenderer...


>
> 2. At argument/options level, it's related to completer. For the output,
> you can use paging or filtering on the output.
>

You need to inject a reference to the terminal:

  @Reference org.apache.karaf.shell.api.console.Session session;

Then, you'll have to check the terminal's height using
session.getTerminal().getHeight() and compare to the estimated number of
lines.
To read user input, use session.getKeyboard().read() ...


>
> Regards
> JB
>
>
> On 05/30/2017 11:28 AM, Dominik Marciniszyn wrote:
>
>> Hi,
>>
>> I would like to customize commands created by myself. Some of this
>> commands
>> returns a lot of information. So I have two questions:
>>
>> 1. How could I creating custom coloring of my commands?
>> 2. How could I create limitations of displaying results on the console? I
>> would like do mechanism like in Karaf shell - "karaf@root()> Display all
>> 294
>> possibilities? (y or n)"
>>
>> Thank You for help or advice,
>> Dominik Marciniszyn
>>
>>
>>
>> --
>> View this message in context: http://karaf.922171.n3.nabble.
>> com/Own-Karaf-commands-customization-tp4050498.html
>> Sent from the Karaf - Dev mailing list archive at Nabble.com.
>>
>>
> --
> Jean-Baptiste Onofré
> jbonofre@apache.org
> http://blog.nanthrax.net
> Talend - http://www.talend.com
>



-- 
------------------------
Guillaume Nodet

Re: Own Karaf commands customization

Posted by Jean-Baptiste Onofré <jb...@nanthrax.net>.

Hi Dominik,

1. When you do the System.out you can use color scheme/code. To simplify this 
you can use Ansi utils, doing something like:

Ansi.ansi(output).fg(Ansi.Color.RED).a("foo").a("bar").reset();

2. At argument/options level, it's related to completer. For the output, you can 
use paging or filtering on the output.

Regards
JB

On 05/30/2017 11:28 AM, Dominik Marciniszyn wrote:
> Hi,
> 
> I would like to customize commands created by myself. Some of this commands
> returns a lot of information. So I have two questions:
> 
> 1. How could I creating custom coloring of my commands?
> 2. How could I create limitations of displaying results on the console? I
> would like do mechanism like in Karaf shell - "karaf@root()> Display all 294
> possibilities? (y or n)"
> 
> Thank You for help or advice,
> Dominik Marciniszyn
> 
> 
> 
> --
> View this message in context: http://karaf.922171.n3.nabble.com/Own-Karaf-commands-customization-tp4050498.html
> Sent from the Karaf - Dev mailing list archive at Nabble.com.
> 

-- 
Jean-Baptiste Onofré
jbonofre@apache.org
http://blog.nanthrax.net
Talend - http://www.talend.com