This archive is retained to ensure existing URLs remain functional. It will not contain any emails sent to this mailing list after July 1, 2024. For all messages, including those sent before and after this date, please visit the new location of the archive at https://mailman.ripe.net/archives/list/[email protected]/

[db-wg] [opensource-wg] Question for RPSL Parser

• Previous message (by thread): [db-wg] [opensource-wg] Question for RPSL Parser
• Next message (by thread): [db-wg] Updating maintainer objects with filtered auth lines

Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Nick Hilliard nick at inex.ie
Thu Aug 20 14:36:40 CEST 2015

On 20/08/2015 13:11, Stavros Konstantaras wrote:
> What my prototype does now is extract the attributes and values by using
> Regular Expressions

rpsl is afaik a chomsky type 1 or 2 grammar and regular expressions are a
chomsky type 3 grammar.  Not wanting to rain on anyone's parade, you cannot
parse a type 1 or type 2 chomsky grammar with a type 3 grammar.

It's a bit like this, except worse:

> http://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-self-contained-tags

A partial solution is obviously possible, however it will only ever be an
approximation.

Nick

• Previous message (by thread): [db-wg] [opensource-wg] Question for RPSL Parser
• Next message (by thread): [db-wg] Updating maintainer objects with filtered auth lines

Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

[ db-wg Archives ]