Use regex with group

[jeremybep]

Hello,

I try to acheive regex matching with group but it won't work.
And what i read is in java it can't forward...but here is a way to do this ?

I am learning java, but i have good basics in python. Here is what I will have written in python :

re.fullmatch(r"(?P<prod>\w\d\w)_(?P<ep>\d{3})_(?P<sht>(\d{3}_\w)|(\d{3}))_(?P<tsk>(\w{5})|(\w{5}\S\w))_(?P<ver>\d{2}).(?P<ext>\w{3})",

Is for matching fileName like this :

PRO_100_010_A_BGCOL_01.psd
PRO_100_010_A_BGCOL_A_01.psd
PRO_100_010_BGCOL_01.psd
PRO_100_010_BGCOL_A_01.psd

you can test-it, it work :

https://regex101.com/

Even if i try to match (with no forward) only one :

PRO_100_010_A_BGCOL_01.psd

var str = "PRO_100_010_A_BGCOL_01.psd"
var matchA = /(?<prod>\w{3})_(?<ep>\d{3})_(?<sht>\d{3}_\w)_(?<tsk>\w{5})_(?<ver>\w{2}).(?<ext>\w{3})/g;
var groups = str.match(matchA).groups;
alert(groups.prod);
alert(groups.ep);
alert(groups.sht);

i've got error ?

regards, 

[jeremybep]

Ok, try this way, but error :

//var documents = app.activeDocument;
//var docName = app.activeDocument.name;
//var docPath = app.activeDocument.path.fsName;
var docName = "F2R_405_017_COLOR_01.psd"
var matchA = /(?<prod>\w{3})_(?<ep>\d{3})_(?<sht>\d{3}_\w)_(?<tsk>\w{5})_(?<ver>\w{2}).(?<ext>\w{3})/g;
var groups = docName.match(new RegExp(matchA, "g").groups;
var ep = groups.ep;
alert(ep)

[Manan Joshi · Accepted solution]

Seems like the named groups are not supported by Extendscript. Something like the following should work to check if the string matches or not

var str = "PRO_100_010_A_BGCOL_01.psd"
var matchA = /(\w{3})_(\d{3})_(\d{3}_\w)_(\w{5})_(\w{2}).(\w{3})/g;
var groups = str.match(matchA)
alert(groups)

If you want to get the match in the group, try the following code

var str = "PRO_100_010_A_BGCOL_01.psd"
var reg = new RegExp(/(\w{3})_(\d{3})_(\d{3}_\w)_(\w{5})_(\w{2}).(\w{3})/g);
var m = reg.exec(str)
alert(m[1]);
alert(m[2]);

-Manan

[jeremybep]

Thank you, i'll try with (a|b) (match a or b) if it works

[jeremybep]

Nice ! @Manan Joshi 

Thank you again 😉

I figured out :

var match = new RegExp(/(\w\d\w)_(\d{3})_(\d{3}_\w|\d{3})_(\w{5}|\w{5}\S\w)_(\d{2}).(\w{3})/g);