I would like to get the string representation of a packet field, something like:
pkt[BOOTP].op == 'BOOTREPLY'
So far, the only cumbersome way I found is:
pkt[BOOTP].fields_desc[0].i2repr(pkt[BOOTP], 2)
Any other idea?
You can use sprintf
pkt.sprintf("%BOOTP.op%")
Related
I have a json string to build a query, and I need to convert this to QueryBuilder. (ES Ver. 6.3.0)
I found that I can use wrapperQuery method, so I wrote this code:
String str = cond.getFilter().toString();
QueryBuilder filter = QueryBuilders.boolQuery().must(QueryBuilders.wrapperQuery(str));
And these are result of variables in debug mode:
This method is working right, as the decription in the Docs(https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-wrapper-query.html)
The problem is, that this query just not working.
What is wrong and what should I do?
Any comments would be appreciated. Thanks.
Your JSON format seems to be wrong. Since your ASSET_IP is not a number, it must be string in JSON representation. Hence you need to put it as below in your JSON.
{ "ASSET_IP" : "xx.xxx.xxx.xx" }
Update your JSON with the above and try again.
I want to find out the name of an xcb_randr_monitor_info_t. It has a name field, but that's of type xcb_atom_t, not a char [255] or something easy like that. How can I turn it into a (preferably UTF-8) string?
You are looking for xcb_get_atom_name_name
xcb_get_atom_name_reply_t *reply=xcb_get_atom_name_reply(
dis, xcb_get_atom_name(dis, atom), NULL);
char*name=xcb_get_atom_name_name(reply);
I have params like:
params[:id]= "\"ebfd11a9-3aa4-415a-ba72-1b6796ea1bf6\""
And i want to get expected result as below:
"ebfd11a9-3aa4-415a-ba72-1b6796ea1bf6"
How can I do this?
You can use gsub:
"\"ebfd11a9-3aa4-415a-ba72-1b6796ea1bf6\"".gsub("\"", "")
=> "ebfd11a9-3aa4-415a-ba72-1b6796ea1bf6"
Or, as #Stefan mentioned, delete:
"\"ebfd11a9-3aa4-415a-ba72-1b6796ea1bf6\"".delete("\"")
=> "ebfd11a9-3aa4-415a-ba72-1b6796ea1bf6"
If this is JSON data, which it could very well be in that format:
JSON.load(params[:id])
This handles things where there's somehow escaped strings in there, or the parameters are an array.
Just Use tr!
params[:id].tr!("\"","")
tr! will also change the main string
In case you do not want to change main string just use :
params[:id].tr("\"","")
Thanks Ilya
In Freemarker, I want to treat something that may be missing (not defined on given object or in given Map), have a null value, be an empty string "" or a string with whitespace only (" \t\n"), AKA blank string. Or a real value like "foo".
In case it's anything besides a non-blank string, I want the expression to return a default value.
How can I handle this in Freemarker?
So far, this is what I use:
${ obj.propery???then(obj.property?trim!"default") }
But I can imagine something more ellegant, like
${ obj.property!!?trim!"default" }
and even with trimming (which is quite common operation for templates):
${ obj.property!!!"default" }
Is there something such in Freemarker? (Besides coding my own method or macro.)
There's nothing in FreeMarker for that, at least not in 2.3.24. I think the best way to address that is wiriting a trimToNull function, and then you can write trimToNull(obj.property)!"default" and trimToNull(obj.property)??, etc.
I had the same challenge and came to this solution:
${ (obj.property!"")?trim }
It also trims the empty string but is easier to read than writing an function or a if.
there is a string like this and it is stored in a file
#{date}abcde.doc
I want to be able to read this string and replace #{date} with
Date.today.strftime("%Y%m%d")
Is there any way to parse the template and do the evaluation? Thanks in advance!
Yes, however...
It would be easier if you used hash replacement, like this:
s = "%{date}abcde.doc"
s % { date: Time.now.strftime(etc) }
Or just use ERb.
As-is you're using string interpolation so it would need to be evaled, I think.