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RegEx expression help

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regexquestionhelptutorial
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  • N NavnathKale

    Dont worry my solution still works !!! I guess u don;t need name captured groups, so I have removed it n here is new one

    (\[{3}MyProperty4\]{3}[\s{1}])(.*?(?=\s{1}\[|$))

    Mark as anwser !!!! :-D

    F Offline
    F Offline
    Fayu
    wrote on last edited by
    #19

    I would LOVE an explanation on the logic behind this... (\[{3}Property2\]{3}[\s{1}])(.*?(?=\s{1}\[|$)) The only part I understand is (\[{3}Property2\]{3}[\s{1}])

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    • F Fayu

      Works like a charm!!! Any way I can just have the value returned?

      N Offline
      N Offline
      NavnathKale
      wrote on last edited by
      #20

      Now time to callback my initial post. :| Like I said use Named capturing groups. Using this you can just return the value of provided propertyname

      Regex regex = new Regex(@"(\[{3}MyProperty3\]{3}[\s{1}])(?<MyProperty3>.*?(?=\s{1}\[|$))");
      Match regexmatch = regex.Match(@"[[[MyProperty1]]] Value [[[MyProperty2]]] value2 [[[MyProperty3]]] value 3");
      string value = regexmatch.Groups["MyProperty3"].Value

      Above code will return value of property MyProperty3

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      • F Fayu

        I would LOVE an explanation on the logic behind this... (\[{3}Property2\]{3}[\s{1}])(.*?(?=\s{1}\[|$)) The only part I understand is (\[{3}Property2\]{3}[\s{1}])

        N Offline
        N Offline
        NavnathKale
        wrote on last edited by
        #21

        Yeah!!! u ought to know everything thats going around on earth :wtf: Google will take you to right place if you search for positive lookahead in regex :-\

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        • P PIEBALDconsult

          I prefer the technique I showed. You then enumerate the Matches and fill a Dictionary with the Names and Values. Your requirements 1 -- 3 are then satisfied by the Dictionary and you only have to execute the RegEx once per group of properties.

          Fayu wrote:

          Use VBScript

          Then why post it in the C# forum? Or maybe you should give more information on the bigger picture of what you are trying to accomplish.

          N Offline
          N Offline
          NavnathKale
          wrote on last edited by
          #22

          Your solution will also give same result, but it will return all properties. As Fayu asked on his requirement, it wasnt he is looking for. Cheers !!!

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          • N NavnathKale

            Your solution will also give same result, but it will return all properties. As Fayu asked on his requirement, it wasnt he is looking for. Cheers !!!

            P Offline
            P Offline
            PIEBALDconsult
            wrote on last edited by
            #23

            Navnath R. Kale wrote:

            it wasnt he is looking for

            It should be.

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            • P PIEBALDconsult

              I prefer the technique I showed. You then enumerate the Matches and fill a Dictionary with the Names and Values. Your requirements 1 -- 3 are then satisfied by the Dictionary and you only have to execute the RegEx once per group of properties.

              Fayu wrote:

              Use VBScript

              Then why post it in the C# forum? Or maybe you should give more information on the bigger picture of what you are trying to accomplish.

              P Offline
              P Offline
              PIEBALDconsult
              wrote on last edited by
              #24

              Fayu wrote:

              I wish I can use the CLR but the requirements I have prevent me from using the CLR.

              ::Throws up hands::

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              • P PIEBALDconsult

                Fayu wrote:

                I wish I can use the CLR but the requirements I have prevent me from using the CLR.

                ::Throws up hands::

                F Offline
                F Offline
                Fayu
                wrote on last edited by
                #25

                Yea but I am not using the clr. The pattern he provided worked with all requirement, including not using CLR. I used his pattern using VBScript.RegexExp and it worked wonders. Thanks for your help as well.

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                • F Fayu

                  Yea but I am not using the clr. The pattern he provided worked with all requirement, including not using CLR. I used his pattern using VBScript.RegexExp and it worked wonders. Thanks for your help as well.

                  P Offline
                  P Offline
                  PIEBALDconsult
                  wrote on last edited by
                  #26

                  Mine works with perl: perl -e "print \"[[[MyProperty1]]] Value [[[MyProperty2]]] value2 [[[MyProperty3]]] value 3\" =~ m/(?:\[\[\[(?'Name'.*?)\]\]\](?'Value'[^\[]*))/g"

                  %stuff = $ARGV[0] =~ m/(?:\[\[\[(?'Name'.*?)\]\]\](?'Value'[^\[]*))/g ;

                  foreach $id ( sort ( keys ( %stuff ) ) )
                  {
                  print ( "$id = $stuff{$id}\n" ) ;
                  }

                  modified on Saturday, April 10, 2010 12:33 AM

                  N 1 Reply Last reply
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                  • P PIEBALDconsult

                    Mine works with perl: perl -e "print \"[[[MyProperty1]]] Value [[[MyProperty2]]] value2 [[[MyProperty3]]] value 3\" =~ m/(?:\[\[\[(?'Name'.*?)\]\]\](?'Value'[^\[]*))/g"

                    %stuff = $ARGV[0] =~ m/(?:\[\[\[(?'Name'.*?)\]\]\](?'Value'[^\[]*))/g ;

                    foreach $id ( sort ( keys ( %stuff ) ) )
                    {
                    print ( "$id = $stuff{$id}\n" ) ;
                    }

                    modified on Saturday, April 10, 2010 12:33 AM

                    N Offline
                    N Offline
                    NavnathKale
                    wrote on last edited by
                    #27

                    Well i guess, all this confusion is because question is in wrong section. Perl supports Named capture groups but client scripts don't.

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                    • N NavnathKale

                      Well i guess, all this confusion is because question is in wrong section. Perl supports Named capture groups but client scripts don't.

                      P Offline
                      P Offline
                      PIEBALDconsult
                      wrote on last edited by
                      #28

                      Navnath R. Kale wrote:

                      Named capture groups

                      You don't need to name them. The important thing is to have the engine return all the matches and enumerate them.

                      N 1 Reply Last reply
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                      • P PIEBALDconsult

                        Navnath R. Kale wrote:

                        Named capture groups

                        You don't need to name them. The important thing is to have the engine return all the matches and enumerate them.

                        N Offline
                        N Offline
                        NavnathKale
                        wrote on last edited by
                        #29

                        :doh: !!! Now the thread becomes the session. Actually (?'Name') and (?'Value') is equal to (?<Name>) and (?<Value>) and is nothing but Named capturing group. .Net supports it both way.

                        P 1 Reply Last reply
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                        • N NavnathKale

                          :doh: !!! Now the thread becomes the session. Actually (?'Name') and (?'Value') is equal to (?<Name>) and (?<Value>) and is nothing but Named capturing group. .Net supports it both way.

                          P Offline
                          P Offline
                          PIEBALDconsult
                          wrote on last edited by
                          #30

                          Yes. I prefer the apostrophes -- at least I don't need to escape them when I post them. :-D

                          N 1 Reply Last reply
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                          • P PIEBALDconsult

                            Yes. I prefer the apostrophes -- at least I don't need to escape them when I post them. :-D

                            N Offline
                            N Offline
                            NavnathKale
                            wrote on last edited by
                            #31

                            Yeah :laugh: On first post I was like " :doh: WTF happened to my pattern, it was correct when I typed"

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