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<?php
/**
* Copyright (c) 2012, Jos de Ruijter <jos@dutnie.nl>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/**
* Parse instructions for the LimeChat logfile format.
*
* +------------+-------------------------------------------------------+->
* | Line | Format | Notes
* +------------+-------------------------------------------------------+->
* | Normal | NICK: MSG | Skip empty lines.
* | Nickchange | NICK is now known as NICK |
* | Join | NICK has joined (HOST) |
* | Part | NICK has left (MSG) | Part message may be empty due to normalization.
* | Quit | NICK has left IRC (MSG) | Quit message may be empty due to normalization. IRC is literal.
* | Mode | NICK has changed mode: +o-v NICK NICK | Only check for combinations of ops (+o) and voices (+v).
* | Topic | NICK has set topic: MSG | Skip empty topics.
* | Kick | NICK has kicked NICK (MSG) | Kick message may be empty due to normalization.
* +------------+-------------------------------------------------------+->
*
* Notes:
* - normalize_line() scrubs all lines before passing them on to parse_line().
* - LimeChat uses the same syntax for actions as "normal" lines. This makes the two indistinguishable. Pretty dumb.
* - Given that nicks can't contain ":" the order of the regular expressions below is irrelevant (current order aims for best performance).
*/
final class parser_limechat extends parser
{
/**
* Variables that shouldn't be tampered with.
*/
private $repeatlock = false;
/**
* Parse a line for various chat data.
*/
protected function parse_line($line)
{
/**
* "Normal" lines.
*/
if (preg_match('/^(?<time>\d{2}:\d{2}(:\d{2})?) (?<nick>\S+): (?<line>.+)$/', $line, $matches)) {
$this->set_normal($this->date.' '.$matches['time'], $matches['nick'], $matches['line']);
/**
* "Join" lines.
*/
} elseif (preg_match('/^(?<time>\d{2}:\d{2}(:\d{2})?) (?<nick>\S+) has joined \(\S+\)$/', $line, $matches)) {
$this->set_join($this->date.' '.$matches['time'], $matches['nick']);
/**
* "Quit" lines.
*/
} elseif (preg_match('/^(?<time>\d{2}:\d{2}(:\d{2})?) (?<nick>\S+) has left IRC \(.*\)$/', $line, $matches)) {
$this->set_quit($this->date.' '.$matches['time'], $matches['nick']);
/**
* "Mode" lines.
*/
} elseif (preg_match('/^(?<time>\d{2}:\d{2}(:\d{2})?) (?<nick_performing>\S+) has changed mode: (?<modes>[-+][ov]+([-+][ov]+)?) (?<nicks_undergoing>\S+( \S+)*)$/', $line, $matches)) {
$nicks_undergoing = explode(' ', $matches['nicks_undergoing']);
$modenum = 0;
for ($i = 0, $j = strlen($matches['modes']); $i < $j; $i++) {
$mode = substr($matches['modes'], $i, 1);
if ($mode == '-' || $mode == '+') {
$modesign = $mode;
} else {
$this->set_mode($this->date.' '.$matches['time'], $matches['nick_performing'], $nicks_undergoing[$modenum], $modesign.$mode);
$modenum++;
}
}
/**
* "Nickchange" lines.
*/
} elseif (preg_match('/^(?<time>\d{2}:\d{2}(:\d{2})?) (?<nick_performing>\S+) is now known as (?<nick_undergoing>\S+)$/', $line, $matches)) {
$this->set_nickchange($this->date.' '.$matches['time'], $matches['nick_performing'], $matches['nick_undergoing']);
/**
* "Part" lines.
*/
} elseif (preg_match('/^(?<time>\d{2}:\d{2}(:\d{2})?) (?<nick>\S+) has left \(.*\)$/', $line, $matches)) {
$this->set_part($this->date.' '.$matches['time'], $matches['nick']);
/**
* "Topic" lines.
*/
} elseif (preg_match('/^(?<time>\d{2}:\d{2}(:\d{2})?) (?<nick>\S+) has set topic: (?<line>.+)$/', $line, $matches)) {
$this->set_topic($this->date.' '.$matches['time'], $matches['nick'], $matches['line']);
/**
* "Kick" lines.
*/
} elseif (preg_match('/^(?<time>\d{2}:\d{2}(:\d{2})?) (?<line>(?<nick_performing>\S+) has kicked (?<nick_undergoing>\S+) \(.*\))$/', $line, $matches)) {
$this->set_kick($this->date.' '.$matches['time'], $matches['nick_performing'], $matches['nick_undergoing'], $matches['line']);
/**
* Skip everything else.
*/
} elseif ($line != '') {
$this->output('debug', 'parse_line(): skipping line '.$this->linenum.': \''.$line.'\'');
}
}
}
?>
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