Regexp for chapter numbers matching

Dear DXL experts,

Am trying to match below string to extract chapter numbers as shown below

=========================================================

Regexp hasField = regexp "(([0-9]+.[0-9]+ ).|([0-9]+.[0-9]+.[0-9]+.[0-9]+)|([0-9]+.[0-9]+.[0-9]+.[0-9]+.[0-9]+) )"

string s = "12.13.2.334.1 The vehicle shall initially be operated in "

if(hasField s)
 {
  print  s[match 0]
 }

=========================================================

below code prints only "12.13.2.334", i want to extract 12.13.2.334.1. 

string  "s" may contain 1.1 or 1.1.1 or 1.22.34.456.20  or 1 or etc in the beginning of the string

Can you please help to find out the issue in Regexp 

Thanks in Advance

ukrishne

Re: Regexp for chapter numbers matching
O.Wilkop - Thu Jan 18 04:08:41 EST 2018

try something like:

"[0-9]+(\\.[0-9]+)*"

it expects a number in front and then zero-to-infinite blocks containing of a dot-separator and another number, meaning:

1

1.1

1.12.3

1.23.456.7890.1.2.3.4

are all valid.

Regexp should match the longest match by default, if it doesn't try adding a space after the "*" at the end.

(Also "." in regexp means "any non newline character", if you want an actual dot you have to escape it with backslashes)

Re: Regexp for chapter numbers matching
ukrishne - Thu Jan 18 06:04:42 EST 2018

great help. It worked.