logstash-patterns VS kbnf

Why don't languages have grok patterns in their standard libraries?

It seems to only exist in log parsing ecosystems but this really helps with getting rid of little bugs and wrong parsing of specific regex patterns.

Instead of doing "^\d+(\.\d+){3}$" for IP checking which is clearly wrong, you'd do "%{IPV4:ip}" which is so much better.

List of known patterns : https://github.com/hpcugent/logstash-patterns/blob/master/fi...

Even for PHP a third party library only has 15 stars.

in case you haven't, it can be found here. https://github.com/hpcugent/logstash-patterns/blob/master/files/grok-patterns

Also, some of the patterns can be referred from https://github.com/hpcugent/logstash-patterns/blob/master/files/grok-patterns I personally prefer the above link for constructing grok pattern.

The fundamental problem comes from assigning meaning to whitespace (in this case, concatenation). I had the same issues when developing KBNF ( https://github.com/kstenerud/kbnf/blob/master/kbnf.md ) which operates in a closely related space.

In early development, I took a number of cues from regex that turned out to be bad ideas, in particular using whitespace for concatenation (which all BNF dialects seem to do).

Switching to '&' for concatenation fixed it and made things a lot clearer, as it would also do for Pomsky:

    'Hello' & ' '+ & ('world' | 'pomsky')

Hi everyone! Merry Christmas and happy new year!

I'm making a modernized BNF-style metalanguage that supports grammars for text and binary formats, but unless there's some kind of outside review, I won't find any blind spots I have until long after release.

If you have experience in grammars or protocols (text or binary), could you take a quick look?

Note: I'm not aiming for perfect expressivity; just 80-90% of use cases without making things overcomplicated so that it can be used descriptively in documentation.

https://github.com/kstenerud/kbnf/blob/master/kbnf.md

Boredom is what led to pretty much every project I've ever done. I usually have a list in my head of things that could be made better, but they never come to anything until I have a lengthy period of nothing to do.

Latest example: I had to take all my vacation time this year or else I'd lose it. I got so bored that I built this over the past weeks: https://github.com/kstenerud/kbnf