How to Find the specific character between two repeated strings.

I have input string as

Input =<NETWORK>CAN</NETWORK> <DESCRIPTION>Despacito</DESCRIPTION> <INITVALUE>0</INITVALUE><FRAME>ADAS_A08SC_FD</FRAME> <DATA>ADAS_HazardLampRequest</DATA>

from this string I want data which is present between two <NETWORK> i.e CAN same for Des I want answer as Despacito and inital value as '0'

Frame as 'ADAS_A08SC_FD' and ans for Data field would be 'ADAS_HazardLampRequest'

Answer 1

[Stephen23]

>> V = '<NETWORK>CAN</NETWORK> <DESCRIPTION>Despacito</DESCRIPTION> <INITVALUE>0</INITVALUE><FRAME>ADAS_A08SC_FD</FRAME> <DATA>ADAS_HazardLampRequest</DATA>';
>> C = regexp(V,'<(\w+)>([^/]*)</\1>','tokens');
>> C = vertcat(C{:});
>> S = cell2struct(C(:,2),C(:,1),1)
S = 
        NETWORK: 'CAN'
    DESCRIPTION: 'Despacito'
      INITVALUE: '0'
          FRAME: 'ADAS_A08SC_FD'
           DATA: 'ADAS_HazardLampRequest'
>> S.NETWORK
ans =
CAN

https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-structure-array.html

https://www.mathworks.com/help/matlab/matlab_prog/generate-field-names-from-variables.html

[Pratik Yadav]

WOW.........!!! :) I am Just amzed. This is fantastic. Can you do one more favour , Could please eloborate this command regexp(S,'<(\w+)>([^/]*)</\1>','tokens'); So, that I will be able to explore it.

[Stephen23]

"...please eloborate this command..."

The function regexp is documented here:

https://www.mathworks.com/help/matlab/ref/regexp.html

Regular expressions are documented here (note that the documentation includes examples of simple HTML parsing, i.e. matching tags just like you want to do):

https://www.mathworks.com/help/matlab/matlab_prog/regular-expressions.html

The regular expression I used works like this:

<                   % match literal '<'
 (                  % start token group 1 (for the tag)
  \w+               % match 1 or more letters or digits
     )              % end token group 1
      >             % match literal '>'
       (            % start token group 2 (for the data)
        [^/]*       % match zero or more characters that are not '/'
             )      % end token group 2
              </    % match literal '</'
                \1  % match first token group (whatever it may be)
                  > % match literal '>'

The regexp option 'tokens' returns the tokens specified by the regular expression.

If you want to explore regular expressions further then you might like to download my FEX submission iregexp:

https://www.mathworks.com/matlabcentral/fileexchange/48930-interactive-regular-expression-tool