Two Word QRegExp Help

[mabeeh]

I'm having a problem setting up a two word QRegExp. In Example #1 I'm able to pick out USER from str1. However, in Example #2 I'm not able to pick out USER ACTION:
What am I doing wrong? Thanks!

EXAMPLE #1:

QString str = "User Action:";
QString str1 = "USER ACTION:";
 
  QRegExp reg ("^\\bUSER\\b");
 
  int ireturn = reg.indexIn(str, 0); 
  std::cout << ireturn << std::endl;
  ireturn = reg.indexIn(str1, 0);
  std::cout << ireturn << std::endl;
  QString captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;

QString str = "User Action:";
QString str1 = "USER ACTION:";
  
  QRegExp reg ("^\\bUSER\\b");
   
  int ireturn = reg.indexIn(str, 0); 
  std::cout << ireturn << std::endl;
  ireturn = reg.indexIn(str1, 0);
  std::cout << ireturn << std::endl;
  QString captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;

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EXAMPLE #2:

QString str = "User Action:";
QString str1 = "USER ACTION:";
 
 QRegExp reg ("^\\bUSER\\b\\s\\bACTION:\\b");
 
  int ireturn = reg.indexIn(str, 0); 
  std::cout << ireturn << std::endl;
  ireturn = reg.indexIn(str1, 0);
  std::cout << ireturn << std::endl;
  QString captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;

QString str = "User Action:";
QString str1 = "USER ACTION:";
  
 QRegExp reg ("^\\bUSER\\b\\s\\bACTION:\\b");
   
  int ireturn = reg.indexIn(str, 0); 
  std::cout << ireturn << std::endl;
  ireturn = reg.indexIn(str1, 0);
  std::cout << ireturn << std::endl;
  QString captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;

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[jpn]

Did you read QRegExp::cap() docs?

[mabeeh]

Thanks for the help! But I have one more question...How do I capture the entire string? I need to be able to capture the entire line. So far I've got it to match the key words I'm looking for. Thanks!

QString str = "User Action:";
  QString str1 = "USER ACTION: do this";
  QString str2 = "USER VERIFY: DO SOMETHING ELSE";
  QString str3 = "STEP NUMBER: 1";
 
  QRegExp reg ("^((\\bUSER\\b)(\\s)(\\bACTION:\\b?))|((\\bUSER\\b)(\\s)(\\bVERIFY:\\b?))|((\\bSTEP\\b)(\\s)(\\bNUMBER:\\b?))");
 
  int ireturn = reg.indexIn(str, 0); 
  std::cout << ireturn << std::endl;
  ireturn = reg.indexIn(str1, 0);
  std::cout << ireturn << std::endl;
  QString captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;
 
  ireturn = reg.indexIn(str2, 0);
  std::cout << ireturn << std::endl;
  captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;
 
  ireturn = reg.indexIn(str3, 0);
  std::cout << ireturn << std::endl;
  captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;

QString str = "User Action:";
  QString str1 = "USER ACTION: do this";
  QString str2 = "USER VERIFY: DO SOMETHING ELSE";
  QString str3 = "STEP NUMBER: 1";
  
  QRegExp reg ("^((\\bUSER\\b)(\\s)(\\bACTION:\\b?))|((\\bUSER\\b)(\\s)(\\bVERIFY:\\b?))|((\\bSTEP\\b)(\\s)(\\bNUMBER:\\b?))");
   
  int ireturn = reg.indexIn(str, 0); 
  std::cout << ireturn << std::endl;
  ireturn = reg.indexIn(str1, 0);
  std::cout << ireturn << std::endl;
  QString captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;

  ireturn = reg.indexIn(str2, 0);
  std::cout << ireturn << std::endl;
  captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;
  
  ireturn = reg.indexIn(str3, 0);
  std::cout << ireturn << std::endl;
  captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;

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Output produced:

-1
0
USER ACTION:
0
USER VERIFY:
0
STEP NUMBER:

[mabeeh]

I got it...and it captures the entire string. Here's the code and the output.

QString str = "User Action:";
  QString str1 = "USER ACTION: do this";
  QString str2 = "USER VERIFY: DO SOMETHING ELSE";
  QString str3 = "STEP NUMBER: 1";
 
  QRegExp reg ("^((\\bUSER\\b)(\\s)(\\bACTION:\\b?))(.*$)|((\\bUSER\\b)(\\s)(\\bVERIFY:\\b?))(.*$)|((\\bSTEP\\b)(\\s)(\\bNUMBER:\\b?))(.*$)");
 
  int ireturn = reg.indexIn(str, 0); 
  std::cout << ireturn << std::endl;
  ireturn = reg.indexIn(str1, 0);
  std::cout << ireturn << std::endl;
  QString captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;
 
  ireturn = reg.indexIn(str2, 0);
  std::cout << ireturn << std::endl;
  captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;
 
  ireturn = reg.indexIn(str3, 0);
  std::cout << ireturn << std::endl;
  captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;

QString str = "User Action:";
  QString str1 = "USER ACTION: do this";
  QString str2 = "USER VERIFY: DO SOMETHING ELSE";
  QString str3 = "STEP NUMBER: 1";
  
  QRegExp reg ("^((\\bUSER\\b)(\\s)(\\bACTION:\\b?))(.*$)|((\\bUSER\\b)(\\s)(\\bVERIFY:\\b?))(.*$)|((\\bSTEP\\b)(\\s)(\\bNUMBER:\\b?))(.*$)");
   
  int ireturn = reg.indexIn(str, 0); 
  std::cout << ireturn << std::endl;
  ireturn = reg.indexIn(str1, 0);
  std::cout << ireturn << std::endl;
  QString captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;

  ireturn = reg.indexIn(str2, 0);
  std::cout << ireturn << std::endl;
  captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;
  
  ireturn = reg.indexIn(str3, 0);
  std::cout << ireturn << std::endl;
  captured = reg.cap( 0 ); // captured == "letter"
  std::cout << captured.toStdString() << std::endl;

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Output Produced:

-1
0
USER ACTION: do this
0
USER VERIFY: DO SOMETHING ELSE
0
STEP NUMBER: 1