Regular Expressions - Extraction and Group Logic support

Can you tell me if you can support more advanced regular expressions besides the matches true/false support that you currently have.

for sample imagine that I have a string such as below,

ABC1CTL_0_20150821_0.TXT where all I know of before hand is - there is a CTL and a YYYYMMDD date in the string

hence the name confirms to .*CTL.*[0-9]{8}.*\.TXT

I need however get the bit before the CTL and the YYYYMMDD part

in the regular expression handling world, I would specify an expression such as

(?<startfield>.*)CTL.*_(?<datefield>[0-9]{8}).*\.TXT

where startfield and datefield are two GROUPS.

I would then say if str ( i cannot completely show this in pascal, but the idea is that i can target groups - named preferred, numbered are ok too.

s := 'ABC1CTL_0_20150821_0.TXT ';
r := '(?<startfield>.*)CTL.*_(?<datefield>[0-9]{8}).*\.TXT';

m := RegularExpressionMatches(s,r,0); // where the 0 is the input for options such as ignore case etc,

matches = length(m);

//loop thru 1 to matches to get the groups

m(0) // startfield
m(1) // datefield

Or using the group names where i can then say

res : string;

res := matches.Result($startfield);

or even

res := matches.Results('startfield');

Thank you for the feedback
Our developers will investigate it for you

Daniel

The regular expressions engine we had until now did not support groups.
It was quite old so we had to update it to make it work.
In the latest version we added two new functions
Replace RegX and Split RegX

Split RegX can be used to split string based on regular expression

For example




I hope this will help you to achieve your objective

Hi Daniel

Just letting you know that we added "Use groups" option to Split RegX transformation function
By default, it is set to true and should have no effect on existing transformations