Question

I’m trying to isolate array name and array size from code. This example of expected input:

blah_blah[blahvar]
blah_ha[2]
blah_[]

I need to match names (blah_blah, blah_ha, blah_) and text inside brackets (blahvar, 2, ”).
I have this regex:

([a-zA-z_]+)(\[[a-zA-Z_]*\])

But it’s not working. Please help.

Answer 1

You need to include numbers:

([a-zA-z_0-9]+)(\[[a-zA-Z_0-9]*\])

Without that, your second example blah_ha[2] won’t catch (the others do).

A shorter version (that captures every word character (letters, digits, etc.):

(\w+)(\[\w*\])