Regex parameter url if exists

Question

I have got this string:

tcp://10.0.0.1:11211?rep=12&timeout=12

so I tried with:

(tcp://.+):([0-9]+)\?.*\&+timeout=([0-9]+).*

I need to retrieve:

tcp://10.0.0.1 that is the server
11211 that is the port
timeout parameter value (in this case 12)

The tcp://10.0.0.1:11211 part exists in any case and so I need it, but the query part is not mandatory, so my problem is that if ? or timeout or = don't exist the regex doesn't retrun anything.
Due to my inexperience I'm not able to solve this problem,how can I achive this result?

Regex101 Demo

engincancan · Accepted Answer · 2015-06-06 13:51:37Z

4

How about creating a new capture group after the port

([a-zA-Z]{3,4}://.+?):(\d+)(.+?timeout=(\d+).?)?

It finishes up the;

tcp://10.0.0.1:11211 in 28 steps

tcp://10.0.0.1:11211?timeout=12 in 42 steps

tcp://10.0.0.1:11211?rep=12&timeout=12 in 48 steps

edited Jun 6, 2015 at 13:51

answered Jun 6, 2015 at 13:28

engincancan

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1 Comment

Razorphyn Over a year ago

Doesn't capture: tcp://10.0.0.1:11211?timeout=12

karthik manchala · Accepted Answer · 2015-06-06 13:36:43Z

0

You can make the pattern after the match optional by adding ?:

(tcp://.+):([0-9]+)(\?.*\&?timeout=([0-9]+).*)?
                   ↑      ↑                  ↑↑

See DEMO

edited Jun 6, 2015 at 13:36

answered Jun 6, 2015 at 13:32

karthik manchala

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2 Comments

Razorphyn Over a year ago

Doesn't capture: tcp://10.0.0.1:11211?timeout=12

engincancan Over a year ago

it tooks 100 steps to do it

Nunzi'es · Accepted Answer · 2015-06-06 13:29:04Z

0

The following regex seems to work for me.

(tcp://.+):([0-9]+)(\?.*\&+timeout=([0-9]+).*|)

It’s based on your regex. The part after the interrogation mark (\?.*\&+timeout=([0-9]+).*) has just been enclosed in a (...|).

It is usual to use (pattern|) if something might not exist, but you need the regex to match the whole string nonetheless.

answered Jun 6, 2015 at 13:29

Nunzi'es

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1 Comment

Razorphyn Over a year ago

Doesn't capture: tcp://10.0.0.1:11211?timeout=12

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