Regex to extract multiple matching string

Question

I am trying to extract HostName and Email address from text file using regex. These fields are optional. It is possible that in some cases only one field is available.

For example: if email address is not available is should extract only hostname and vice versa.

I got nearly working regex. Just not working for single case. see the regex in below link.

regex: ^.*(MAIL:(?<EMAIL>.*))(HOST:(?<HOSTNAME>.*))?

https://regex101.com/r/SDOcIR/1

Note: I am not looking this for specific language.

Thanks

please, post the strings that you are working on and avoid external links — c4f4t0r
– c4f4t0r, Commented Feb 21, 2019 at 14:40
Guys it fixed for 2nd line which was not working but broke all others. Now email field include both host and mail address. — Ankit Goyal
– Ankit Goyal, Commented Feb 21, 2019 at 14:50

Matt.G · Accepted Answer · 2019-02-21 14:58:42Z

1

Try Regex: (?:MAIL:(?<EMAIL>[^ ]+))|(?:HOST:(?<HOSTNAME>.*))

Demo

answered Feb 21, 2019 at 14:58

Matt.G

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