PMusrCanvas: replace TObjArray/TObjString with PStringUtils

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/classes/PMusrCanvas.cpp

@@ -34,11 +34,11 @@
 #include <TColor.h>
 #include <TRandom.h>
 #include <TROOT.h>
-#include <TObjString.h>
 #include <TGFileDialog.h>
 
 #include "PMusrCanvas.h"
 #include "PFourier.h"
+#include "PStringUtils.h"
 
 static const char *gFiletypes[] = { "Data files", "*.dat",
                                     "All files",  "*",
@@ -6408,23 +6408,15 @@ Bool_t PMusrCanvas::IsScaleN0AndBkg()
   PMsrLines *cmd = fMsrHandler->GetMsrCommands();
   for (UInt_t i=0; i<cmd->size(); i++) {
     if (cmd->at(i).fLine.Contains("SCALE_N0_BKG", TString::kIgnoreCase)) {
-      TObjArray *tokens = nullptr;
-      TObjString *ostr = nullptr;
-      TString str;
-      tokens = cmd->at(i).fLine.Tokenize(" \t");
-      if (tokens->GetEntries() != 2) {
+      std::vector<std::string> tokens = PStringUtils::Split(cmd->at(i).fLine.Data(), " \t");
+      if (tokens.size() != 2) {
         std::cerr << std::endl << ">> PRunSingleHisto::IsScaleN0AndBkg(): **WARNING** Found uncorrect 'SCALE_N0_BKG' command, will ignore it.";
         std::cerr << std::endl << ">> Allowed commands: SCALE_N0_BKG TRUE | FALSE" << std::endl;
         return willScale;
       }
-      ostr = dynamic_cast<TObjString*>(tokens->At(1));
-      str = ostr->GetString();
-      if (!str.CompareTo("FALSE", TString::kIgnoreCase)) {
+      if (PStringUtils::IsEqualNoCase(tokens[1], "FALSE")) {
         willScale = false;
       }
-      // clean up
-      if (tokens)
-        delete tokens;
     }
   }