Implement punycode encoding/decoding

[rschu1ze]

Inspired by #34439, especially #34439 (comment), which was dormant for too long. This PR also uses the ada-idna library instead of a 15 year old homegrown implementation.

Changelog category (leave one):

• New Feature

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

Added functions for punycode encoding/decoding: punycodeEncode() and punycodeDecode().

Documentation entry for user-facing changes

• [ X ] Documentation is written (mandatory for new features)

[robot-ch-test-poll4]

This is an automated comment for commit 1d9c0db with description of existing statuses. It's updated for the latest CI running

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[alexey-milovidov]

Seeing @lemire as one of the main authors of the library gives me full confidence!

[lemire]

Seeing @lemire as one of the main authors of the library gives me full confidence!

We stand behind this library 100%. It is being used by millions of people as it is part of Node.js. We've had very few bug reports. We are going to keep improving it and extending it.

[anonrig]

Good to see Clickhouse adopting Ada Idna! Happy to help with any issues you might encounter.

[alexey-milovidov]

It is way too low-level to be user-friendly: https://pastila.nl/?0196792d/9db06e3e231f4096cc5ef0105a936dfa#cVjN8dNOdSrP22FyyT+pvw==
I'll revert for now, let's resubmit.

[alexey-milovidov]

Also, see how the error message is wrong. It shows "Internal error" and nothing else. It could not be alright.

[alexey-milovidov]

Or keep these functions around and introduce new ones - IDNAEncode, IDNADecode?

[alexey-milovidov]

If the name is not decodable, we should return the default value (empty string), because otherwise the function is difficult to use on large real datasets.

[azat]

If the name is not decodable, we should return the default value (empty string), because otherwise the function is difficult to use on large real datasets.

Sometimes such functions can be used to verify that the domain is validly encoded domain, though I guess sometimes it make sense to return default value. So maybe both variants should be added or something like OrNull equivalent.

[vitlibar]

Or keep these functions around and introduce new ones - IDNAEncode, IDNADecode?

I think it would be better to have both functions: punycodeEncode, punycodeDecode and idnaEncode, idnaDecode:

> SELECT punycodeEncode('München.München-Ost')
Mnchen.Mnchen-Ost-22bh

> SELECT idnaEncode('München.München-Ost')
xn--mnchen-3ya.xn--mnchen-ost-9db

[alexey-milovidov]

+1, agree - let's have both functions.

[alexey-milovidov]

Now works: https://play.clickhouse.com/play?user=play#U0VMRUNUIHJhbmssIGlkbmFEZWNvZGUoZG9tYWluKSBBUyBkIEZST00gY2lzY29fdW1icmVsbGEgV0hFUkUgZG9tYWluIExJS0UgJyV4bi0tJScgT1JERVIgQlkgcmFuayBMSU1JVCAxIEJZIGQgTElNSVQgMTAwMA==

[lemire]

@alexey-milovidov ClickHouse is fantastic. :-)