Module: Regexp::Irc
- Defined in:
- lib/rbot/irc.rb,
lib/rbot/core/utils/extends.rb
Overview
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
Constant Summary collapse
- 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 =
Nick-matching regexps
/[\x5b-\x60\x7b-\x7d]/- 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 =
Host-matching regexps
/[[:alnum:]](?:[[:alnum:]]|-)*[[:alnum:]]*/- HOSTNAME =
/#{HOSTNAME_COMPONENT}(?:\.#{HOSTNAME_COMPONENT})*/- HOSTADDR =
/#{IP_ADDR}|#{IP6_ADDR}/- GEN_HOST =
/#{HOSTNAME}|#{HOSTADDR}/- GEN_HOST_EXT =
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:
/\S+/- GEN_USER_ID =
User-matching Regexp
/(#{GEN_NICK})(?:(?:!(#{GEN_USER}))?@(#{GEN_HOST_EXT}))?/- BANG_AT =
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 !
/#{GEN_NICK}|\S+?(?:!\S+?)?@\S+?/- CHAN_LIST =
Match a list of channel anmes separated by optional commas, whitespace and optionally the word “and”
Regexp.new_list(GEN_CHAN)
- IN_CHAN =
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_ON}\s+(#{GEN_CHAN})|(here)|/- IN_CHAN_PVT =
/#{IN_CHAN}|in\s+(private|pvt)/- IN_CHAN_LIST_SFX =
As above, but with channel lists
Regexp.new_list(/#{GEN_CHAN}|here/, IN_ON)
- 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 =
Match a list of nicknames separated by optional commas, whitespace and optionally the word “and”
Regexp.new_list(GEN_NICK)