Regex] Rounding numbers python script does not run properly

Alan Kilborn

Just for fun (I say that a lot), here’s a version that does a prompted replace with preview (wouldn’t it be great if N++ itself offered a preview to its [regex] replacement?). Strange but I’ve never coded this kind of thing before for N++; one more thing to stash in the bag-of-tricks…

def main():

    while True:
        match_list = []
        editor.research("-*\d+\.\d{4,}", lambda m: match_list.append(m.span(0)), 0, editor.getCurrentPos(), editor.getTextLength(), 1)
        if len(match_list) == 0: return
        editor.setSelection(match_list[0][1], match_list[0][0]); editor.scrollCaret()
        repl_text = '{:0.3f}'.format(round(float(editor.getSelText()), 3))
        result = notepad.messageBox('Replace selected text with\r\n\r\n{}\r\n\r\n???'.format(repl_text), '', MESSAGEBOXFLAGS.YESNOCANCEL)
        if result == MESSAGEBOXFLAGS.RESULTCANCEL: return
        if result == MESSAGEBOXFLAGS.RESULTYES: editor.replaceSel(repl_text)

main()

Imgur

Alan Kilborn

…still having fun with this…so much can be done to make interactive replace much better than what N++ can do; sample:

Imgur

unfassbarstephan

Wow, thank you dir your help! I will try this approach.

unfassbarstephan

@Alan-Kilborn said:

…still having fun with this…so much can be done to make interactive replace much better than what N++ can do; sample:

The one-line-solution works like a charm.

Would you also publish your code for the interactive replace? That would be great.

Short question: What does “???” mean?

Ekopalypse

@unfassbarstephan

Short question: What does “???” mean?

This is Alan’s wasteful use of the question mark,
for which it is also used here, to ask a question. :-D

Alan Kilborn

@unfassbarstephan said:

Would you also publish your code for the interactive replace?

I did…for your specific case. I’m still working on a generic version; may never finish it… :(

@Ekopalypse said:

Alan’s wasteful use of the question mark

Wasteful? It doesn’t seem right without it; I did consider it this way as well, maybe better?:

Replace selected text with? :

PeterJones

@Alan-Kilborn said:

Replace selected text with? :

Maybe Would you like to replace the selected text with the following text?

Alan Kilborn

@PeterJones

Well, Pythonscript sizes the dialog box according to contents, so I was trying to keep it as narrow and short as possible to avoid covering too much of the Notepad++ main window. But…I’ve already added more info to make it taller, so why not wider as well? :)

Alan Kilborn

Would you also publish your code for the interactive replace?

I’m still working on a generic version; may never finish it

Follow-up:

There may not be a reasonable way to script this (the “generic version”); here’s why: There doesn’t seem to be a way to do a “boost-ish” replacement option on a Python string. It’s only possible to do it on in-place text.

What I want to do in the code is pull a copy of the matched text into a Python string and then do a Notepad++ -like replacement operation on that. Sure I can do a Python “re” replacement on it, but that isn’t always going to be equivalent.

Digging deeper, I see there is an open issue on this kind of thing in the Pythonscript code pages, here. But it hasn’t been acted on so it isn’t a reality.

If anyone has thoughts on this, I’m all ears. @Ekopalypse ?

Alan Kilborn

Ugh. Clearly I meant this Pythonscript issue: https://github.com/bruderstein/PythonScript/issues/101 in the previous post, but it is too late for an edit. :(

Ekopalypse

@Alan-Kilborn

one idea might be to search for matches and replace only those which are
in the same range as the selected text. Something like

if start_pos_selected text <= match_start and end_pos_selected_text >= match_end:
    replaceSelText

Or did I misunderstood your goal? :-(

Alan Kilborn

@Ekopalypse said:

did I misunderstood your goal?

Maybe that part. :)

To be able to offer a preview of the yet-to-be-done replacement, I need to know what that replacement will be. I can’t do that without actually doing the replacement. Catch-22. I could do it and then undo it, I suppose, but that gets messy. Mostly it should be OK, but sometimes with regexes Boost can differ from Python’s re.

Ekopalypse

@Alan-Kilborn

what about using a hidden scintilla instance?

Alan Kilborn

@Ekopalypse said:

what about using a hidden scintilla instance?

That also sounds “messy” (or “involved”) but if you have some snippet to show me it is not so bad…?

Ekopalypse

@Alan-Kilborn

I used it here.

Ekopalypse

@Alan-Kilborn

just be careful about notepad.destroyScintilla(self.hidden_scintilla)
Currently npp crashes when using this and then request another buffer.
There is already a merged fix but only available on next release.

Alan Kilborn

@Ekopalypse

This is the issue, I assume: https://github.com/notepad-plus-plus/notepad-plus-plus/issues/4487

Ekopalypse

@Alan-Kilborn

correct, that is the one.

Alan Kilborn

@Ekopalypse said:

what about using a hidden scintilla instance?

So, like this: hidden = notepad.createScintilla()

That is actually a nice solution. The hidden instance’s entire text can be set to the matched text from the editor.research(). Then the hidden.rereplace() can be called and the result of the replacement read out into a Python string variable. Thanks, Eko; clearly I would not have thought of this technique without your pointer.

just be careful about notepad.destroyScintilla()

This is not a problem as I will do this near the top of the script, and never do a “destroy”:

try:
    hidden
except NameError:
    hidden = notepad.createScintilla()

and never do a “destroy”

Alan Kilborn

@Alan-Kilborn said:

I will do this near the top of the script, and never do a “destroy”:

and never do a “destroy”

There really is an “echo” in here, or just me repeating myself and not noticing.