Module: Regexp::Irc

Module | Regexp::Irc
In: | lib/rbot/core/utils/extends.rb lib/rbot/irc.rb

We start with some IRC related regular expressions, used to match Irc::User nicks and users and Irc::Channel names

For each of them we define two versions of the regular expression:

- a generic one, which should match for any server but may turn out to match more than a specific server would accept
- an RFC-compliant matcher

### Constants

CHAN_LIST | = | Regexp.new_list(GEN_CHAN) |  | Match a list of channel anmes separated by optional commas, whitespace and optionally the word "and"
IN_CHAN | = | /#{IN_ON}\s+(#{GEN_CHAN})|(here)|/ |  | Match "in channel" or "on channel" and/or "in private" (optionally shortened to "in pvt"), returning the channel name or the word ‘private’ or ‘pvt’ as capture
IN_CHAN_PVT | = | /#{IN_CHAN}|in\s+(private|pvt)/
IN_CHAN_LIST_SFX | = | Regexp.new_list(/#{GEN_CHAN}|here/, IN_ON) |  | As above, but with channel lists
IN_CHAN_LIST | = | /#{IN_ON}\s+#{IN_CHAN_LIST_SFX}|anywhere|everywhere/
IN_CHAN_LIST_PVT_SFX | = | Regexp.new_list(/#{GEN_CHAN}|here|private|pvt/, IN_ON)
IN_CHAN_LIST_PVT | = | /#{IN_ON}\s+#{IN_CHAN_LIST_PVT_SFX}|anywhere|everywhere/
NICK_LIST | = | Regexp.new_list(GEN_NICK) |  | Match a list of nicknames separated by optional commas, whitespace and optionally the word "and"
CHAN_FIRST | = | /[#&+]/ |  | Channel-name-matching regexps
CHAN_SAFE | = | /![A-Z0-9]{5}/
CHAN_ANY | = | /[^\x00\x07\x0A\x0D ,:]/
GEN_CHAN | = | /(?:#{CHAN_FIRST}|#{CHAN_SAFE})#{CHAN_ANY}+/
RFC_CHAN | = | /#{CHAN_FIRST}#{CHAN_ANY}{1,49}|#{CHAN_SAFE}#{CHAN_ANY}{1,44}/
SPECIAL_CHAR | = | /[\x5b-\x60\x7b-\x7d]/ |  | Nick-matching regexps
NICK_FIRST | = | /#{SPECIAL_CHAR}|[[:alpha:]]/
NICK_ANY | = | /#{SPECIAL_CHAR}|[[:alnum:]]|-/
GEN_NICK | = | /#{NICK_FIRST}#{NICK_ANY}+/
RFC_NICK | = | /#{NICK_FIRST}#{NICK_ANY}{0,8}/
USER_CHAR | = | /[^\x00\x0a\x0d @]/
GEN_USER | = | /#{USER_CHAR}+/
HOSTNAME_COMPONENT | = | /[[:alnum:]](?:[[:alnum:]]|-)*[[:alnum:]]*/ |  | Host-matching regexps
HOSTNAME | = | /#{HOSTNAME_COMPONENT}(?:\.#{HOSTNAME_COMPONENT})*/
HOSTADDR | = | /#{IP_ADDR}|#{IP6_ADDR}/
GEN_HOST | = | /#{HOSTNAME}|#{HOSTADDR}/
GEN_HOST_EXT | = | /\S+/ |  | Sadly, different networks have different, RFC-breaking ways of cloaking the actualy host address: see above for an example to handle FreeNode. Another example would be Azzurra, wich also inserts a "=" in the cloacked host. So let‘s just not care about this and go with the simplest thing:
GEN_USER_ID | = | /(#{GEN_NICK})(?:(?:!(#{GEN_USER}))?@(#{GEN_HOST_EXT}))?/ |  | User-matching Regexp
BANG_AT | = | /#{GEN_NICK}|\S+?(?:!\S+?)?@\S+?/ |  | Things such has the BIP proxy send invalid nicks in a complete netmask, so we want to match this, rather: this matches either a compliant nick or a a string with a very generic nick, a very generic hostname after an @ sign, and an optional user after a !

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