public function crawl($startPage, HtmlPage $doc, ParsedPagesList $parsedPages)
{
$linkStack[] = $startPage;
while (count($linkStack) > 0) {
$url = array_shift($linkStack);
if ($parsedPages->isUrlInList($url)) {
continue;
}
echo sprintf('==> Crawling %s ...', urldecode($url));
$startTime = microtime(true);
$html = CurlWrapper::get($url);
if ($html === false) {
echo 'Failed due to curl error' . PHP_EOL;
continue;
}
$doc->load($html);
$imageCount = $doc->getImgTagCount();
$parseTime = $this->convertTimeToMiliseconds(microtime(true) - $startTime);
$parsedPages->add(new Record($url, $imageCount, $parseTime));
echo sprintf("Done (%d)\n", memory_get_usage());
$links = $doc->getLinks();
foreach ($links as $link) {
$href = $doc->getHrefOfLink($link);
if (UrlTools::isLocalLink($href)) {
$href = $startPage . UrlTools::extractLocalPath($href);
}
if (UrlTools::isDomainLink($startPage, $href)) {
$linkStack[] = $href;
}
}
}
}