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Help with a reference to regex group

https://www.xyplorer.com/xyfc/viewtopic.php?t=21247

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Help with a reference to regex group

Posted: 05 Dec 2019 15:20
by John_C
I'm trying to write a simple script to copy the files in the following way:

Code: Select all

from  filename_with_multiple_exts.user.js
to    filename_with_multiple_exts.user.js@1300.user.js   // 13:00 is the current time (1:00 pm)
Here is what I tried:

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doesn't work
::$a = regexmatches("<curname>", "^([^.]*)\.(.*)$"); copyas '<curname>@<date HHmm>.' . $2;

as well as this
::$a = regexmatches("<curname>", "^([^.]*)\.(.*)$"); copyas '<curname>@<date HHmm>.' . $a$2;
The problem is that $2 doesn't work.

Re: Help with a reference to regex group

Posted: 05 Dec 2019 15:44
by highend
Em, what?

Referencing a group can only be done inside the command^^
regexmatches() doesn't know anything about capturing groups^^

So this would be either done via regexreplace() or without
groups at all, e.g.:

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::$a = regexmatches(<curname>, "(\.([^.]+)){2}$"); copyas '<curname>@<date HHmm>' . $a;

Re: Help with a reference to regex group

Posted: 05 Dec 2019 16:46
by John_C
Thanks. It seems it could be even simpler:

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::$a = regexmatches(<curname>, "\..*$"); copyas '<curname>@<date HHmm>' . $a;
Though I'm not really happy that regex includes the initial period...

Re: Help with a reference to regex group

Posted: 05 Dec 2019 17:55
by highend
Thanks. It seems it could be even simpler
As long as everything after the first dot should be captured? Sure.

Re: Help with a reference to regex group

Posted: 05 Dec 2019 20:22
by John_C
Yes, everything after the first dot.

I have tried these two versions to exclude the dot itself:

* https://regex101.com/r/NAc2rg/2
* https://regex101.com/r/NAc2rg/3

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::$a = regexmatches(<curname>, '(?<=\.).*'); copyas '<curname>@<date HHmm>' . $a;
::$a = regexmatches(<curname>, '\.\K.*'); copyas '<curname>@<date HHmm>' . $a;
Seems it doesn't work in XYplorer...

Re: Help with a reference to regex group

Posted: 05 Dec 2019 20:39
by highend
Neither lookbehinds nor keep outs are supported by VB6 regex...
You could just trim the result...

Re: Help with a reference to regex group

Posted: 05 Dec 2019 21:24
by John_C
Well, this is the version that looks good to my opinion. I will use it:

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::$exts = regexreplace(<curname>, '^[^\.]+\.?'); copyas '<curname>@<date HHmm>' . '.' . $exts;

Re: Help with a reference to regex group

Posted: 05 Dec 2019 21:34
by highend
1. There is no need to escape a dot in a range
2. This is even shorter: ^.+?\. (for the given example)

Re: Help with a reference to regex group

Posted: 07 Dec 2019 19:41
by John_C
highend wrote: ↑05 Dec 2019 21:34 1. There is no need to escape a dot in a range
2. This is even shorter: ^.+?\. (for the given example)
highend, could you help a little more?

Here is my script to copy the files and directories:

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::$exts = regexreplace(<curname>, '^[^\.]+\.?');
if ($exts == '') {
    copyas '<curname>@<date hhnn>';
}
else {
    $exts = regexreplace($exts, '^.+@\d+\.');
    copyas '<curname>@<date hhnn>' . '.' . $exts;
}
I use it as a one-liner.

Consider a file with double extension user.js. It will be copied as follows:

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a.user.js => a.user.js@1300.user.js
However, it doesn't work correctly when I have multiple files selected. For example:

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Select
a.aaa.js
b.bbb.js

Run the script. The files will be copied as
a.aaa.js@1300.aaa#2.js
b.bbb.js@1300.aaa#2.js

or
a.aaa.js@1300.bbb#2.js
b.bbb.js@1300.bbb#2.js
1300 is the current time. #2 is my incremental affix (yes, it starts from 2).

I understand what is going on, but I don't know how to fix it.

Re: Help with a reference to regex group

Posted: 07 Dec 2019 20:07
by highend
<curname> references the wrong item when more than one are selected...

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    $date = <date hhnn>;
    foreach($item, <get SelectedItemsNames |>, , "e") {
        $exts = regexreplace($item, '^[^\.]+\.?');
        if ($exts == '') {
            copyas $item . "@$date", , $item;
        } else {
            $exts = regexreplace($exts, '^.+@\d+\.');
            copyas $item . "@$date" . '.' . $exts, , $item;
        }
    }

Re: Help with a reference to regex group

Posted: 07 Dec 2019 21:15
by John_C
Thanks. It seems it should be

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$date = <date hhnn>;
foreach($item, <get SelectedItemsNames |>, , 'e') {
    $exts = regexreplace($item, '^[^\.]+\.?');
    if ($exts == '') {
        copyas $item . '@' . $date, , $item;
    } else {
        $exts = regexreplace($exts, '^.+@\d+\.');
        copyas $item . '@' . $date . '.' . $exts, , $item;
    }
}
I changed the location of the quotes.

Without this change, I wasn't able to run it with cmd.exe.

Re: Help with a reference to regex group

Posted: 11 Dec 2019 13:23
by John_C
Is it possible to make it work with files currently stored in the clipboard, instead of the selected ones?

I tried to change the second line in different ways, e.g.

Code: Select all

foreach($item, <get clipboard |>, , 'e')
foreach($item, <get clipboard>, , 'e')
foreach($item, <get clipboard>, <crlf>, 'e')
foreach($item, <clipboard>, <crlf>, 'e')
but these changes doesn't work.

Re: Help with a reference to regex group

Posted: 11 Dec 2019 13:38
by highend
foreach($item, <clipboard>, <crlf>, 'e')
should work (depending on if the files are really separated by <crlf>). But without knowing what's inside your clipboard...

Re: Help with a reference to regex group

Posted: 11 Dec 2019 16:53
by John_C
Thanks a lot. Sorry that sometimes I don't read the docs with enough patience.

What I really trying to accomplish is to recreate the same behavior as described few posts above with 2 differences:

* It should work for copy, not for duplicate
* It should work with incremental affix, not the date one.

That is, you select one or multiple files, then press Ctrl-C and Ctrl-V, and the file will be copied as follows:

Code: Select all

file.user.js => file#2.user.js
file.user.js => file#3.user.js
file.user.js => file#4.user.js
etc
Below is what I have currently.

It works, but not correctly, I will be greatly appreciated for help.

The problem is that I need the incremental affix, not the date one. But it seems that XY doesn't have the variable for it.

Code: Select all

::$affix = <date hhnn>;
foreach($item, <clipboard>, <crlf>, 'e') {
    $filename = regexmatches($item, '[^\\]+$');
    $exts = regexreplace($item, '^[^\.]+\.?');
    copyas $filename . '#' . $affix . '.' . $exts,, $item;
}
In real life, the script is intended to work trough AutoHotkey, and therefore, for convenience, I post AutoHotkey version as well:

Code: Select all

#SingleInstance Force
SetTitleMatchMode 2
XYplorerDir := "C:\PrgFiles\XYplorer"

#If WinActive("ahk_exe XYplorer.exe")

^v::
    Run % XYplorerDir . "\XYplorer.exe /script=" . """"
        . "::$affix = <date hhnn>;"
        . "foreach($item, <clipboard>, <crlf>, 'e') {"
            . "$filename = regexmatches($item, '[^\\]+$');"
            . "$exts = regexreplace($item, '^[^\.]+\.?');"
            . "copyas $filename . '#' . $affix . '.' . $exts,, $item;"
        . "}" . """" . A_Space . "/flg=2"
Return

Re: Help with a reference to regex group

Posted: 11 Dec 2019 18:25
by highend
And where exactly is the problem now?

01. Get the affix from XY's .ini file by reading "PostfixNum" from the "General" section via getkey()
02. In the foreach() loop
- Get the digits in the affix via a regexmatch()
- Count the number(s) of the captured digits (so that it would work for e.g. #02 as well!) via strlen()
- Generate the first $dstFile name (this time by just inserting the normal affix)
- Now use a while(true) loop
-- Check if the $dstFile already exists via exists()
-- If not, do the copying and break the while loop
-- If yes
---- Increase the digits from the affix by one
---- Format this value with the count value from above and replace the digits in the affix with this new value via format() and strrepeat()
---- Generate the new $dstFile name with this new (counted up) affix
---- The loop will continue until it DOES NOT find a file name that already exists

With this strategy and e.g. an affix of " [02]"
and existing names like:

Code: Select all

file.user.js
file [02].user.js
file [05].user.js
the next run of the script (and "file.user.js" still in the clipboard) it would generate the next missing file [03].user.js file...
All times are UTC+02:00
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