Transform a Colloquy.app conversation into a simpler format

dialogue.php

<?php

$notice = $_SERVER['argv'][1] == '-notice';

$input = '';
if (STDIN) while (!feof(STDIN)) $input .= fgets(STDIN, 4096);

foreach (explode("\n", $input) as $text) {
    $a = explode('<', $text);
    if (count($a) > 1) {
        $name = array_shift(explode('>', $a[1]));
    } else if (strpos($text, ']')) {
        $name = $notice;
    } else {
        $message = trim($a[0]);
        if ($name && $message) {
            echo ($name === true) ? "$message\n" : "$name: $message\n";
            $name = $message = false;
        }
    }
}