A CTCP encoding and decoding library for IRC clients. https://github.com/barrucadu/irc-ctcp
This package is not currently in any snapshots. If you're interested in using it, we recommend adding it to Stackage Nightly. Doing so will make builds more reliable, and allow stackage.org to host generated Haddocks.
CTCP (Client To Client Protocol) is a way of sending arbitrary data
over an IRC network, which may include bytes not allowed in standard
IRC messages. CTCPs are sent as a PRIVMSG or NOTICE, where the first
and last characters as
\001 (SOH), and special bytes are escaped
by encoding them into a two-byte sequence beginning with
(DLE). CTCPs consist of command name (typically in upper-case)
followed by list of space-separated arguments, which may be empty.
One use of CTCPs supported by the vast majority of IRC clients today
is the ACTION command, typically invoked with /me. For example, if
foo in the channel
#bar were to issue
everyone in the channel would receive the message
:foo PRIVMSG #bar :\001ACTION dances\001
Other common uses of CTCP include requesting the name and version of a user's IRC client, their local time, determining ping times, and initiating file transfers (DCC).
Characters are escaped as follows:
All other appearences of the escape character are errors, and are dropped.
See http://www.irchelp.org/irchelp/rfc/ctcpspec.html for more details.
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