Hide lines NOT matching search string

[spaceBAR]

Using: UEStudio 6.50+4

Would someone please post and/or send me a simple sample script and/or macro to hide all lines NOT matching a search string in file that is opened in one of the tabs(i.e UEStudio window).

tia

[Mofi]

Hiding single lines is not possible at the moment. Only a block can be made hidden. And as several times written a search for a line not containing a string is not possible (maybe with Perl, I'm not a Perl expert). You can run a regular expression replace for lines containing a string, which adds a special character at start of the lines containing the string, then run a replace which deletes all lines not starting with the special character and last run a third regular expression to delete the special character at start of the remaining lines. Or you search for lines with a specific string and use the find option List Lines Containing String which you then can copy to a new file.

Edited on 2010-03-02: See also my post Filtering lines using the Find command with UE v16.00+.

[pietzcker]

Well, a Perl regex that matches a consecutive block of lines that don't contain a certain string is

Code: Select all

(?:^(?:(?!%REGEX%).)*$\r\n)+

where %REGEX% has to be substituted by the search string that you need (careful: special characters like [\^$.|?*+(){} have to be escaped by a backslash, i.e. \* will match a *).

However, I'm running into a problem when trying to hide a block like this as the option to hide selected lines is grayed out in my UE V14.00+4 (even if there are multiple lines selected), and I don't know why. Maybe Mofi can help here.

The problem remains, though, that single lines (that will also be matched by this regex) cannot be hidden. So maybe using a search for

Code: Select all

^(?:(?!%REGEX%).)*$\r\n

and choosing the option "List lines containing string" will approach better what you need.

HTH,
Tim

[Mofi]

Tim, you have to enable at Configuration - Editor Display - Code Folding the 2 settings:

Enable show/hide lines and code folding
Enable show/hide lines in non syntax highlighted files

[pietzcker]

Thanks, Mofi!

I've just tried it, and it works "as designed", i.e., it won't be (I guess) what spaceBAR wanted because the first line of a hidden block remains visible (and therefore a single line can't be hidden, either). So it comes back to the "List lines containing string" method mentioned earlier...

[Bego]

You won't get lucky trying to find a solution with any regexp-approach NOT finding sth.
So you might write a small macro that goes through the code line by line,
examine that line and if "string not found" then append to "clipboard 9".
So you can collect all lines without the string and paste them to a new document.
Disadvantage: Potentially slow, only a copy of the document is created (not a filter or sth.)

[pietzcker]

Hi Bego,

what's wrong with "List lines containing string" using ^(?:(?!%REGEX%).)*$\r\n as the search string? I'm probably overlooking something...

Cheers,
Tim

[Bego]

Hi Tim,

maybe I am missing sth.
If I have a file like this:

Code: Select all

bblabla
mmgla
lalala
blubb
blubb lala blubb
kjf
another lala blub
end

and I do a regexp-search with

Code: Select all

^(?:(?!%lala%).)*$\r\n

and "list lines containing" checked, i get all lines displayed.

UE 14.00+3

[pietzcker]

Hi Bego,

remove the % signs - you want to search for ^(?:(?!lala).)*$\r\n instead.



Tim

P.S.: The last line has to be \r\n terminated, too, or it won't match...

[Bego]

Aaaah, bingo. OK, that is really a good thing now, thx Tim
So, even myself can learn a bit from time to time

cu, Bego

[boefei]

The approach I took on this was to use grep.

I have cygwin installed on my machine and simply created a tool
Inverse Grep

C:\cygwin\bin\grep.exe -v %sel% %F


I also have one without -v simply called grep.

I like this because it spits it out into a new window for easy further editing.

[Bego]

Hi boefei,

I tried it out because I did not know Cygwin yet and also miss grep on Windows systems. Runs smart. Thank you for the tip.

rds Bego

[boefei]

No problem

Forgot to add just highlight the item you want(want removed) and run the command.


MFG

[psstarkey]

I am wanting something like what spacebar is asking for except I don't want to create a new file with the lines matching the search. I want to collapse all lines NOT matching the search so I can easily edit the ones matching the criteria and then re-expand the whole file with my changes in place.

What about something like that?

[Bego]

There is just the find-option "list lines containing string" that opens a new window with all those lines.
You then can double-click those lines one by one and edit them.
But the feature you describe is not implemented (yet)