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    function list - need help with regular expression

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    • Claudia FrankC
      Claudia Frank @Christian11235
      last edited by

      @Christian11235

      Yes, per default the function list has set the flag DOTALL, which means
      the dot matches any character at all, including the newline.
      To reverse this you might think about using the modifier syntax

      "(?-s)^=+.*=+$"
      

      To be honest, I didn’t try it but I hope it works.

      Cheers
      Claudia

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      • Christian11235C
        Christian11235
        last edited by

        Hello,

        thanks a lot for your reply. I changed functionList.xml to

        <functionName> 
        	<nameExpr expr="(?-s)^=+.*=+$"/> 
        </functionName>
        

        and now the Function LIst looks different:

        = header 1 =
        

        The first headline looks good, but the next is missing. This is only a short example - in my real file all headers are missing except the first one.

        Do you have any ideas ?

        Thanks,
        Christian

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        • MAPJe71M
          MAPJe71
          last edited by

          @Christian11235 try this parser:

          			<parser
          				displayName="[TBD] Wiki"
          				id         ="wiki_syntax"
          			>
          				<function
          					mainExpr="^=+\h+\K(?:\w+\h+)*\w+(?=\h+=+)"
          				/>
          			</parser>
          
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          • Christian11235C
            Christian11235
            last edited by

            Hi,

            sorry - with that mainExpr the function list stays empty.

            One funny thing I realized: when I use my initial expression

            ^=+.*=+$
            

            in the search dialog then it works - it finds every single row. Can it be that the parser for the functionList.xml behaves differently than the parser in the search dialog ?

            Thanks,
            Christian

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            • MAPJe71M
              MAPJe71
              last edited by

              Function List searches with dot matches newline enabled.

              Furthermore,

              1. the displayName="[TBD] Wiki" should be displayName="Wiki";
              2. make sure you have defined a “User Defined Language” named Wiki i.e. same value (incl. case) as that of displayName.

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              • Christian11235C
                Christian11235
                last edited by

                Hello,

                to 1: Yes - I assumed this.
                to 2: Yes - this was the case from the beginning.

                To clarify: the problem ist not that the parsing is not working at all - the problem ist that not all headlines are found. Till now I only have regular expressions which either find

                • the first headline
                  expr=“(?-s)^=+.*=+$”
                • all headlines but take them for one headline
                  expr=“^=+.*=+$”

                Thanks,
                Christian

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                • MAPJe71M
                  MAPJe71
                  last edited by

                  What about (?m)^=+.*=+$ or (?-s)=+.*?=+ ?

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                  • Christian11235C
                    Christian11235
                    last edited by

                    Hi,

                    both expressions only show the first header. All headlines after the first header are ignored.

                    My testfile has the name tst.wik and looks like this

                    = header 1 = 
                    text 
                    == sub header 1 == 
                    text
                    

                    CU
                    Christian

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                    • Christian11235C
                      Christian11235
                      last edited by

                      Sorry - I need to correct me - both expressions show the last header

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                      • MAPJe71M
                        MAPJe71
                        last edited by

                        Are you applying the changes to the correct functionList.xml?
                        There might be more then one functionList.xml file on your system.

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                        • guy038G
                          guy038
                          last edited by

                          Hello Christian 11235, Claudia, MAPJe71 and All,

                          Christian, I suppose that you’re speaking about the Wikimarkup, used in Wikipedia, aren’t you ?

                          https://en.wikipedia.org/wiki/Help:Wiki_markup

                          For a rapid test of your parser, you may, simply, use a usual text file. You don’t need to create any UDL language !


                          So, in a new tab, add the test lines, below :

                          = Header 1 =
                          Line 1
                          Line 2
                          Line 3
                          == sub header 002 ==
                          Line 4
                          Line 5
                          Line 6
                          === sub header_3 ===
                          Line 7
                          Line 8
                          Line 9
                          ==== sub header     4 ====
                          Line 10
                          line 11
                          line 12
                          ===== TEST =====
                          Line 13
                          Line 14
                          Line 15
                          ====== sub header 6 ======
                          Line 16
                          Line 17
                          Line 18
                          =			Last test  ab___c     d            ==
                          Line 19
                          Line 20
                          Line 21
                          ======= Should NOT be displayed =======
                          Line 22
                          Line 23
                          Line 24
                          
                          • Save it as a .txt file

                          Then, in your functionList.xml file :

                          • In the associationMap node, add the line :

                            <association langID= “0” id=“wiki_syntax” />

                          • And, at the beginning of the parser node, add the parser, below :

                          <parser id="wiki_syntax" displayName="wiki">
                              <function
                                  mainExpr="^(={1,6})\h+\K(\w| )+(?=\h+\1)">
                              </function>
                          </parser>
                          

                          You should see, in the Function List panel, each header of the different sections of my example:

                          Header 1
                          sub header 002
                          sub header_3
                          sub header     4
                          TEST
                          sub header 6
                          Last test ab___c     d
                          

                          NOTES :

                          • In the value of mainExpr, there is a space between the alternative sign | and the ending round bracket )

                          • I supposed that a header, of a section, is a non-empty string, which contains, ONLY :

                            • Usual word characters ( Upper and lower letters, digits and the underscore _ )

                            • Space characters

                          • I didn’t consider the tabulation character. Indeed, if a header is, for instance, the string A[Tab][Tab][Tab][Tab][Tab]B, it is, simply, displayed as the string AB, in the FunctionList panel, anyway !

                          => The middle part of the regex = (\w| )+

                          • From beginning of line, each section header :

                            • Begins with one to six equal sign(s), followed by, at least, one space character ( => the first part of the regex = ^(={1,6})\h+\K )

                            • Ends with the same number of equal signs, than, at beginning of line, preceded by, at least, one space character ( => the final part of the regex = (?=\h+\1) )

                          • As this regex does NOT use the dot character, at all, the ``dot matches new line` way of search, of the functionList feature, doesn’t matter :-))

                          Best Regards,

                          guy038

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                          • Christian11235C
                            Christian11235
                            last edited by

                            Hi,

                            @all: thanks a lot for you effort.

                            @MAPJe71: As the changes show different results I think I edited the right xml file. There are also three languages in my functionsList.xml which I use in daily work - without problems.

                            @uy038: I copied all your steps - and maybe I have done something wrong - because I don’t see anything.

                            I took two screenshots:

                            This one show the functionsList.xml and the test-file and the resulting function List:

                            https://www.dropbox.com/s/z1cms3khiqmbe02/npp_screenshot01.jpg?dl=0

                            This screenshot shows the same but the focus is now on the functionList.xml - and there you can see a working functions list (just to proof its working at all).

                            https://www.dropbox.com/s/1uxii4mqhgw4vwz/npp_screenshot02.jpg?dl=0

                            In my functionList.xml are three other languages - for these three languages the function list works.

                            As said - thanks a lot for your effort. Maybe I am doing something wrong - but in the moment I cannot see it.
                            Christian

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                            • guy038G
                              guy038
                              last edited by guy038

                              Hi, Christian 11235,

                              Thanks for your two screenshots. I just noticed that your .txt file is an Unix file ( with \n End of Line character )
                              with an ANSI encoding. So I changed my Windows file, with UTF8 encoding to test but, of course, this makes NO difference. I mean : I did get the expected list of sections in the Function List panel !

                              So, at first sight, I, really, do NOT understand what happens ???. An idiotic question, to be sure ! Of course, you may modify and save the functionList.xml file from within Notepad++. But you need to close and re-start N++ to get it working !


                              Now, could you do an other simple test :

                              • Use the SAME example text, of my previous post

                              • In your functionList.xml file, in the “Wiki” parser, just change the line :

                                  mainExpr="^(={1,6})\h+\K(\w| )+(?=\h+\1)">
                                

                              by the line, below, which contains a very simple regex :

                                  mainExpr="^Line \d+">
                              
                              • Close and re-start N++

                              • In the Function List panel, after selecting the test file, you should see the obvious list, below !

                                Line 1
                                Line 2
                                Line 3
                                Line 4
                                Line 5
                                Line 6
                                Line 7
                                Line 8
                                Line 9
                                Line 10
                                line 11
                                line 12
                                Line 13
                                Line 14
                                Line 15
                                Line 16
                                Line 17
                                Line 18
                                Line 19
                                Line 20
                                Line 21
                                Line 22
                                Line 23
                                Line 24

                              Tested with N++ v7.2 and N++ v7.3.2 => Both OK

                              Cheers,

                              guy038

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                              • MAPJe71M
                                MAPJe71
                                last edited by

                                @guy038 is there a specific reason you use (\w| )+ instead of [\w ]+?

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                                • guy038G
                                  guy038
                                  last edited by guy038

                                  Hi, MAPJe71,

                                  Good question : Absolutely no reason, indeed ! The syntaxes (\w| )+ and ([\w ]+) are equivalent !

                                  I did a rapid test, comparing the two S/R, below

                                  SEARCH (\w| )

                                  REPLACE \1\1

                                  and

                                  SEARCH ([\w ])

                                  REPLACE \1\1

                                  After 722,970 replacements, in both cases, your method seems a bit quicker than mime : 71s instead of 73s for my solution !

                                  Cheers,

                                  guy038

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                                  • Christian11235C
                                    Christian11235
                                    last edited by

                                    Hello,

                                    1. Unix / Ansi is the default at the place I work at. I should have mentioned that.
                                      Now that I think about it - at work I have to use Windows 7 32 bit (please don’t make me explain this *1) and also n++ 32bit.

                                    2. Yes I always closed and restarted n++.

                                    3. mainExpr=“^Line \d+”> shows nothing in the Function List (edited functionList.xml, saved, closed n++, started n++, n++ 7.3.2 (32 bit, Build Feb 12 2017) )

                                    Then i did some expermenting: Added my initial setup in functionList.xml, changed the test-file to UTF-8 BOM, Windows CR-LF. Result: only the first header is shown (no improvement).
                                    Maybe it has something to do with n++ 32bit ? Later I will try this at home (windows 10, 64 bit).

                                    Thanks,
                                    Christian

                                    *1 The company I work at believes in putting money in managers and outsourcing. Not in hired software engineers.

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                                    • Christian11235C
                                      Christian11235
                                      last edited by

                                      Hi,

                                      I am sorry - I just made a mistake and used the wrong functionList.xml. Now that I am doing it correct

                                      <function mainExpr=“^(={1,6})\h+\K(\w| )+(?=\h+\1)”/>

                                      is working and shows the correct functions.

                                      I can only apologize and thank you for all the help,
                                      Christian

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