Regex named capturing

[Advait Mohan Raut]

Hello friends,
I am new to Regex engine. I use Expresso to test RE. For a named
capturing test, I have following schema--

FullName --> first , surname OR
FullName --> surname , first , middle

eg. "advait raut" should return: first=advait surname=raut

and "raut advait mohan" should return: first=advait middle=mohan
surname=raut

For this I useed following RE.
^
(((<?first>[a-z]+)\s(<?surname>[a-z]+))|((<?surname>[a-z]+)\s(<?
first>[a-z]+)\s(<?middle>[a-z]+)))
$

But I dont get the valid match. Where am I mistaking ?

yours
Advait

 

[Kalpesh]

Advait,

Assuming that Fullname could be written the way given below

FullName --> first , surname OR
FullName --> surname , first , middle

You could split the Fullname string separated by space.

If it returns 2 elements, it should be firstname, surname
If it returns 3 elements, it should have been surname, firstname,
middlename

Why bother using regexp for this?
Pardon me, if I don't understand your problem correctly.

Kalpesh

 

[Advait Mohan Raut]

Advait,

Assuming that Fullname could be written the way given below

FullName --> first , surname OR
FullName --> surname , first , middle

You could split the Fullname string separated by space.

Yes, I can use split but I will have to implement backtracking. It
would be better option if I have 4-5 clauses like here. But when I
have 20-30 clauses, I think Regex is better option. What do you
think ?

If it returns 2 elements, it should be firstname, surname
If it returns 3 elements, it should have been surname, firstname,
middlename

Yup, I also expect the same result but don't get it. Can anyone point
it out?

Why bother using regexp for this?
Pardon me, if I don't understand your problem correctly.

Kalpesh

yours
Advait