Extract the Transport names from the list of adapter names

Hello,

I am trying to create a list from the following 1*554 char array that gets created in Maltab after doing "[g, f] = system('getmac)'"

'

Physical Address Transport Name

=================== ==========================================================

08-6A-C5-47-AD-F1 \Device\Tcpip_{D8D48A09-8BEC-4AEB-A8B4-3FB066879E29}

08-6A-C5-47-AD-F5 Media disconnected

E0-70-EA-F2-80-43 Media disconnected

02-50-41-00-00-01 \Device\Tcpip_{179E0B44-9590-47E9-9BD6-22A6F2889C37}

0A-00-27-00-00-2D \Device\Tcpip_{C13C63B9-ACD8-4FFD-B754-E0C5D3386967}

'

Now my question is how do I build a list of only the adapter names(Transport names) that starts with \Device and ends with }

so basically want to create a list/variable in matlab as follows that I can then list as user options into my GUI as a drop down menu.

list = \Device\Tcpip_{D8D48A09-8BEC-4AEB-A8B4-3FB066879E29}

\Device\Tcpip_{179E0B44-9590-47E9-9BD6-22A6F2889C37}

\Device\Tcpip_{C13C63B9-ACD8-4FFD-B754-E0C5D3386967}

I am having troubles to come up with a regexp pattern for this. Can anyone provide some hints ?

[chrisw23]

This can be done with String operations. Look for extract extractBefore extractAfter and Pattern options.

Answer 1

[dpb]

I was going after @chrisw23's mode as I have a terrible time with regexp -- I can find both the start and the end of the string, but I cannot get it to return the token if I put both together in one expression similar to the example in the doc. I've no klew what's wrong with it nor what to do to try to fix it so I do as per usual -- get frustrated-enough to go at it somehow else.

This one isn't too bad -- I'm sure a whizard could do it in a one-liner with regexp, but

f=strtrim(split(f,newline))
f=strtrim(split(f(contains(f,'\Device'))))
list=f(:,2)

seems to do the trick ok. Or, you could use the new-fangled strings if cared to.

I'm frustrated with extractXXX and friends -- there isn't an extractFrom to pull at the matching string; only before or after the match--here and so often it leaves you without the beginning portion one would like. On occasion I've resorted to inserting a code character into the string first, but that's a hack. Otherwise, one has to use another strfind operation to locate the character position and extract by position.

regexp would undoubtedly still be a more elegant solution, but it'll take a better guru than I...or at least am willing to spend any further time over; any lesson I learned I'll have forgotten by the next time wanted it.

[chrisw23]

[g, f] = system('getmac');

macListOut = string(f).split(newline);

macId = macListOut.startsWith(digitsPattern);

splitPat = alphanumericsPattern(2) + " ";

macDescription = macListOut(macId).extractAfter(splitPat).strip();

macAddress = macListOut(macId).extractBefore(macDescription).strip();

[macAddress macDescription]

..just an example..no oneliner :)

[chrisw23]

import System.Net.NetworkInformation.*

nics = NetworkInterface.GetAllNetworkInterfaces();

enNics = nics.GetEnumerator();

while enNics.MoveNext

curNic = enNics.Current;

details(curNic) % select what you need (see available properties and methods)

% example data struct

iName = matlab.lang.makeValidName(string(curNic.Name));

Intf.(iName).Description = string(curNic.Description.ToString());

Intf.(iName).OpState = curNic.OperationalStatus;

Intf.(iName).PhysicalAddress = string(curNic.GetPhysicalAddress.ToString());

Intf.(iName).IsAvailable = string(curNic.GetIsNetworkAvailable);

end

beside the RegExp/String topic......modify this to get all information you need about NetworkInterfaces on your system

Answer 2

[Stephen23]

Oneliner :)

txt = 'Physical Address    Transport Name                                                 =================== ==========================================================     08-6A-C5-47-AD-F1   \Device\Tcpip_{D8D48A09-8BEC-4AEB-A8B4-3FB066879E29}        08-6A-C5-47-AD-F5   Media disconnected                                            E0-70-EA-F2-80-43   Media disconnected                                             02-50-41-00-00-01   \Device\Tcpip_{179E0B44-9590-47E9-9BD6-22A6F2889C37}           0A-00-27-00-00-2D   \Device\Tcpip_{C13C63B9-ACD8-4FFD-B754-E0C5D3386967}      ';
out = regexp(txt,'\\Device[^}]+}','match');
out(:)

ans = 3×1 cell array
    {'\Device\Tcpip_{D8D48A09-8BEC-4AEB-A8B4-3FB066879E29}'}
    {'\Device\Tcpip_{179E0B44-9590-47E9-9BD6-22A6F2889C37}'}
    {'\Device\Tcpip_{C13C63B9-ACD8-4FFD-B754-E0C5D3386967}'}

[Pratik Chachad]

Thanks a lot @Stephen23. This is exactly what I was looking for.