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<?php
/**
* Copyright (c) 2011-2015, Jos de Ruijter <jos@dutnie.nl>
*/
/**
* Parse instructions for the ZNC logfile format.
*
* Line Format Notes
* ---------------------------------------------------------------------------------------------------------------------
* Normal <NICK> MSG Skip empty lines.
* Action * NICK MSG Skip empty actions.
* Slap * NICK slaps MSG Slaps may lack a (valid) target.
* Nickchange NICK is now known as NICK
* Join *** Joins: NICK (HOST)
* Part *** Parts: NICK (HOST) (MSG) Part message may be absent, or empty due to
* normalization.
* Quit *** Quits: NICK (HOST) (MSG) Quit message may be empty due to normalization.
* Mode *** NICK sets mode: +o-v NICK NICK Only check for combinations of ops (+o) and
* voices (+v).
* Topic *** NICK changes topic to 'MSG' Skip empty topics.
* Kick *** NICK was kicked by NICK (MSG) Kick message may be empty due to normalization.
* ---------------------------------------------------------------------------------------------------------------------
*
* Notes:
* - normalize_line() scrubs all lines before passing them on to parse_line().
* - Given that nicks can't contain ":" the order of the regular expressions below is irrelevant (current order aims for
* best performance).
* - In certain cases $matches[] won't contain index items if these optionally appear at the end of a line. We use
* empty() to check whether an index item is both set and has a value.
*/
class parser_znc extends parser
{
/**
* Parse a line for various chat data.
*/
protected function parse_line($line)
{
/**
* "Normal" lines.
*/
if (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] <(?<nick>\S+)> (?<line>.+)$/', $line, $matches)) {
$this->set_normal($matches['time'], $matches['nick'], $matches['line']);
/**
* "Join" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* Joins: (?<nick>\S+) \(\S+\)$/', $line, $matches)) {
$this->set_join($matches['time'], $matches['nick']);
/**
* "Quit" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* Quits: (?<nick>\S+) \(\S+\) \(.*\)$/', $line, $matches)) {
$this->set_quit($matches['time'], $matches['nick']);
/**
* "Mode" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* (?<nick_performing>\S+) sets mode: (?<modes>[-+][ov]+([-+][ov]+)?) (?<nicks_undergoing>\S+( \S+)*)$/', $line, $matches)) {
$modenum = 0;
$nicks_undergoing = explode(' ', $matches['nicks_undergoing']);
for ($i = 0, $j = strlen($matches['modes']); $i < $j; $i++) {
$mode = substr($matches['modes'], $i, 1);
if ($mode === '-' || $mode === '+') {
$modesign = $mode;
} else {
$this->set_mode($matches['time'], $matches['nick_performing'], $nicks_undergoing[$modenum], $modesign.$mode);
$modenum++;
}
}
/**
* "Action" and "slap" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \* (?<line>(?<nick_performing>\S+) ((?<slap>[sS][lL][aA][pP][sS]( (?<nick_undergoing>\S+)( .+)?)?)|(.+)))$/', $line, $matches)) {
if (!empty($matches['slap'])) {
$this->set_slap($matches['time'], $matches['nick_performing'], (!empty($matches['nick_undergoing']) ? $matches['nick_undergoing'] : null));
}
$this->set_action($matches['time'], $matches['nick_performing'], $matches['line']);
/**
* "Nickchange" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* (?<nick_performing>\S+) is now known as (?<nick_undergoing>\S+)$/', $line, $matches)) {
$this->set_nickchange($matches['time'], $matches['nick_performing'], $matches['nick_undergoing']);
/**
* "Part" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* Parts: (?<nick>\S+) \(\S+\)( \(.*\))?$/', $line, $matches)) {
$this->set_part($matches['time'], $matches['nick']);
/**
* "Topic" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* (?<nick>\S+) changes topic to \'(?<line>.+)\'$/', $line, $matches)) {
if ($matches['line'] !== ' ') {
$this->set_topic($matches['time'], $matches['nick'], $matches['line']);
}
/**
* "Kick" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* (?<line>(?<nick_undergoing>\S+) was kicked by (?<nick_performing>\S+) \(.*\))$/', $line, $matches)) {
$this->set_kick($matches['time'], $matches['nick_performing'], $matches['nick_undergoing'], $matches['line']);
/**
* Skip everything else.
*/
} elseif ($line !== '') {
output::output('debug', __METHOD__.'(): skipping line '.$this->linenum.': \''.$line.'\'');
}
}
}
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