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Problem with Regex expression

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  • Problem with Regex expression

    Hi All,

    back to regular expressions after a long while away..

    ' **** trying to change "N123QE,HB-FWA8,A2-ZBW" to "N123QE,HB-FWA[8],A2-ZBW"
    old_id_example_1 = "N123QE,HB-FWA8,A2-ZBW"
    new_id_example_1 = regex_merge(old_id_example_1,"HB-F{A-Z}{A-Z}{0-9}","HB-F{A-Z}{A-Z}\[{0-9}\]","S")
    ' **** trying to change "HB-FTZ18" to "HB-FTZ[18]"
    old_id_example_2 = "HB-FTZ18"
    new_id_example_2 = regex_merge(old_id_example_2,"HB-F{A-Z}{A-Z}{0-9}{0-9}","HB-F{A-Z}{A-Z}\[{0-9}{0-9}\]","S")
    neither work in this example, can anyone guide me towards a solution, thank you
    Support your local Search and Rescue Unit, Get Lost!

  • #2
    Re: Problem with Regex expression

    Don't know much about regex. This works for the two examples you gave.

    FUNCTION hb_brkt AS C (input_string AS C )
    	hb_brkt = input_string 'default return value
    	if "HB-" $ input_string
    		'go on
    	end if
    	which_word_num = word_number_get(input_string,"HB-",",")
    	which_word = word(input_string,which_word_num,",")
    	which_letters = rtrim(which_word,"0123456789")
    	which_nums = ltrim(which_word,upper("abcdefghijklmnopqrestuvwxyz-"))
    	brkts_added = which_letters+"["+which_nums+"]"
    	hb_brkt = strtran(input_string,which_word,brkts_added)

    ? hb_brkt("abc,123,jfg")
    = "abc,123,jfg"

    ? hb_brkt("N123QE,HB-FWA8,A2-ZBW")
    = "N123QE,HB-FWA[8],A2-ZBW"

    ? hb_brkt("HB-FTZ18")
    = "HB-FTZ[18]"
    Last edited by Stan Mathews; 06-15-2018, 10:30 AM. Reason: added examples
    There can be only one.


    • #3
      Re: Problem with Regex expression

      Can you do something with this?

      ? regex_merge("HB-FTZ18","([a-z]+)|([0-9]+)","(?1"$&")"+"(?2[$&)"+"(?2])")
      = "HB-FTZ[18]"
      See our Hybrid Option here;

      In fairness to alcohol, I have done some stupid things when I was sober too!


      • #4
        Re: Problem with Regex expression

        thanks Guys,

        give them both a try
        Support your local Search and Rescue Unit, Get Lost!


        • #5
          Re: Problem with Regex expression

          A function will work well for multiple occurrences of a process.
          A single line is really just a one time shortcut, however, you can add a field to your table and make it Calculated, referencing the field you need changed. The results will appear in the calculated field.
          Yes, there will be data redundancy, but that is your choice whether to be a purist or not. (Given a 1 terabyte Baracuda is around
          See our Hybrid Option here;

          In fairness to alcohol, I have done some stupid things when I was sober too!


          • #6
            Re: Problem with Regex expression

            Came up with this function when I couldnt get the regular expression to work:

            FUNCTION Old_id_swiss AS C (old_id_text AS C )
            old_id_list = comma_to_crlf(old_id_text)
            for numb = 1 to *count(old_id_list)
            if left(word(old_id_list,numb),4) = "HB-F" then
            old_id_list = *word_replace(old_id_list,regex_merge(word(old_id_list,numb),"\d+","\[$&\]"),numb,crlf())
            end if
            next numb
            old_id_swiss = crlf_to_comma(old_id_list)
            END FUNCTION
            Support your local Search and Rescue Unit, Get Lost!