CODEWITHSUNDEEP
pythonregex
wonderwhy
wonderwhy

Reputation: 423

How to write this as a regular expression

I would like some help writing this as a regular expression since I know the basics but not sure how to translate it into RegEx.

"command:argname-argvalue:arg2name-arg2val!!END!SENDTO:IP.ADD.RE.SS"

Command: specific keyword that determines the action I must handle. Must be there.

Arguments: (shown there 2, but not limited to 2, as many as wanted) argument name and argument value, separated by a hyphen. At least one.

!!END! declares the end of the expression and must be there.

SENDTO:000.000.000.000 optional argument and has to match SENDTO: and then a valid IP address.

I then want to store the command, argument name and argument value pairs and, if included, the user ip, in a Python implementation.

I know this sounds like homework but please guys I have now idea how to do this and I would expend hours in trying to learn advanced RegEx. If you could help me, I would be glad to receive your help.

Upvotes: 2

Views: 103

Answers (1)

Kasravnd
Kasravnd

Reputation: 107317

what about the following regex ? 

[\w ?]+:\w+-\d+:\w+-\d+!!END!(\\\[)?\w+:\b(?:\d{1,3}\.){3}\d{1,3}\b(\\\])?

Regular expression visualization

Debuggex Demo

this match some sentence like following :

command:argname-123:arg2name-340234!!END!\[SENDTO:000.000.000.000\]

Upvotes: 1

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