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Extracting strings from a Variable

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    Extracting strings from a Variable

    I have a tree control that produces a variable with contents consisting of

    Main Code:Main Details|Sub Code:Sub Details

    The seperators used are : and | (pipe) to make the tree control display correctly e.g.

    12000:Electrical System
    12028:Wiring Insulation

    Users may choose a main code/description or select main code/description then sub code/description from the tree control.

    Example 1 - Main Code/Description Selected
    12000:Electrical System

    I would like to extract the following strings from the variable to populate the fields in a form:

    12000 to go to Main Code
    Electrical System to go to Detail


    Example 2 - Main & Sub Codes/Descriptions Selected
    12000:Electrical System|12028:Wiring Insulation

    should fill
    12000 into Main Code
    Wiring Insulation into Detail
    12028 into Sub Code

    The problem is that the various strings I need to extract are variable length.

    I thought there might be a function to extract a string based on looking for a particular character occurence but use of word() fails here due to the different seperators.

    #2
    RE: Extracting strings from a Variable

    master = "12000:Electrical System|12028:Wiring Insulation "
    ? word(master,1,"|")
    = "12000:Electrical System"

    ? word(word(master,1,"|"),1,":")
    = "12000"

    ? word(word(master,1,"|"),2,":")
    = "Electrical System"

    ? word(word(master,2,"|"),1,":")
    = "12028"

    ? word(word(master,2,"|"),2,":")
    = "Wiring Insulation "
    There can be only one.

    Comment


      #3
      RE: Extracting strings from a Variable

      ...but use of word() fails here due to the different seperators

      John,

      Have you tried using the optional Word_Delimiter parameter of word()?

      cString = "12000:Electrical System|12028:Wiring Insulation"
      ?word(cString,2,"|")
      ="12028:Wiring Insulation"

      ?word(word(cString,2,"|"),1,":")
      ="12028"

      Steve

      Comment


        #4
        RE: Extracting strings from a Variable

        The interactive editor window is a wonderful tool for solving this kind of problem, since you can experiment there very easily.

        Here's another approach to solving the first problem:

        MyVar = "12000:Electrical System"
        MyVar = trim(MyVar)

        ?left(MyVar,at(":",MyVar,1)-1)
        = "12000"

        ?right(MyVar,len(MyVar)-at(":",MyVar,1))
        = "Electrical System"


        -- tom

        Comment


          #5
          RE: Extracting strings from a Variable

          MyVar = "12000:Electrical System|12028:Wiring Insulation"
          MyVar = trim(MyVar)

          ?left(MyVar, at(":",MyVar,1)-1)
          = "12000"

          ?right(MyVar, len(MyVar) - at(":",MyVar,2))
          = "Wiring Insulation"

          ?substr(MyVar,at(":",MyVar,1)+1, at("|",MyVar,1)-at(":",MyVar,1)-1)
          = "Electrical System"

          ?substr(MyVar,at("|",MyVar,1)+1, at(":",MyVar,2) - at("|",MyVar,1)-1)
          = "12028"

          Comment


            #6
            RE: Extracting strings from a Variable

            master = "12000:Electrical System|12028:Wiring Insulation "

            ? stritran_multi(master,"|"+crlf()+":",","+crlf()+",")
            = "12000,Electrical System,12028,Wiring Insulation "

            ? word(stritran_multi(master,"|"+crlf()+":",","+crlf()+","),1,",")
            = "12000"

            ? word(stritran_multi(master,"|"+crlf()+":",","+crlf()+","),2,",")
            = "Electrical System"

            ? word(stritran_multi(master,"|"+crlf()+":",","+crlf()+","),3,",")
            = "12028"

            ? word(stritran_multi(master,"|"+crlf()+":",","+crlf()+","),4,",")
            = "Wiring Insulation "
            There can be only one.

            Comment


              #7
              RE: Extracting strings from a Variable

              A slightly simpler form of Stan's neat example:

              master = "12000:Electrical System|12028:Wiring Insulation "
              ?word(strtran(master,"|",":"),1,":")
              = "12000"

              ?word(strtran(master,"|",":"),2,":")
              = "Electrical System"

              ?word(strtran(master,"|",":"),3,":")
              = "12028"

              ?word(strtran(master,"|",":"),4,":")
              = "Wiring Insulation "

              Comment


                #8
                RE: Extracting strings from a Variable

                Maybe he might like

                master = "12000:Electrical System|12028:Wiring Insulation "

                ? tagged_pattern("1:2|3:4","1,2,3,4",master)
                = "12000,Electrical System,12028,Wiring Insulation "

                ? word(tagged_pattern("1:2|3:4","1,2,3,4",master),1,",")
                = "12000"
                ? word(tagged_pattern("1:2|3:4","1,2,3,4",master),2,",")
                = "Electrical System"
                ? word(tagged_pattern("1:2|3:4","1,2,3,4",master),3,",")
                = "12028"
                ? word(tagged_pattern("1:2|3:4","1,2,3,4",master),4,",")
                = "Wiring Insulation "
                There can be only one.

                Comment


                  #9
                  RE: Extracting strings from a Variable

                  Or

                  master = "12000:Electrical System|12028:Wiring Insulation "

                  ?tagged_pattern("1:2|3:4","1",master)
                  = "12000"
                  ?tagged_pattern("1:2|3:4","2",master)
                  = "Electrical System"
                  ?tagged_pattern("1:2|3:4","3",master)
                  = "12028"
                  ?tagged_pattern("1:2|3:4","4",master)
                  = "Wiring Insulation "

                  Comment


                    #10
                    RE: Extracting strings from a Variable

                    Thanks for the concepts.

                    I had not realised I could nest word() functions to achieve this.

                    Am experimenting in the interactive code editor.

                    Comment


                      #11
                      RE: Extracting strings from a Variable

                      Most excellent!
                      There can be only one.

                      Comment

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