Question

I would like to search a text in xml file and check that it has the correct value
using Matlab.

I tried :

myFolder = 'folder1';
OutputFile = fullfile(myFolder ,'info.xml');
xmlNode = xmlread(OutputFile );

I would like to check that ‘characteristic’,’color’ options exists and that they have respectively the values : hybrid and red ?

info.xml content————–

<?xml version="1.0" encoding="utf-8"?>
<Custom_project name="" val="True" name="file1" path="file:/C:/Users/Local/Temp/info.xml" version="1.0">
   <verif="true" name="values" path="file:/C:/Users/Temp/folder1">
      <optList name="values">
         <opt name="color">red</option>
         <opt name="police">calibri</option>
         <opt name="font">blue</option>
      </optList>
    </verif>
   <toto="myvalue" name="option1">
      <opt name="myvalue_1">32</option>
      <opt name="-total">All</option>
      <opt name="characteristic">hybrid</option>
   </toto>

Answer 1

If using xmlread is not required, this is one possible solution. Multiple definitions of the same XML options are not checked, so any matching option name – option value pair is counted as a match.

% function that uses regexp to find matching string in XMLdata.

function [IsMatch] = xmlmatch(XMLdata, Variable, Value)
IsMatch = ~isempty(regexp(XMLdata, [ '.*<opt\s*name="', Variable, '">', Value, '</option>.*' ]));
return

% open the file, get file ID

fid = fopen('info.xml');

% read the file contents (assume text file).

XMLdata = fscanf(fid, '%s');

% check the XMLdata’s variables’ values:

IsColorRed = xmlmatch(XMLdata, 'color', 'red');
IsColorRed =
    1

IsColorBlue = xmlmatch(XMLdata, 'color', 'blue');
IsColorBlue =
    0

IsCharacteristicHybrid = xmlmatch(XMLdata, 'characteristic', 'hybrid');
IsCharacteristicHybrid =
    1

IsCharacteristicHybr = xmlmatch(XMLdata, 'characteristic', 'hybr');
IsCharacteristicHybr =
    0

% close the file.

fclose(fid);