/**
* Returns a guaranteed valid HTML attribute. Removes illegal characters.
* Allows for 'naked' attributes, without a value.
* @param string $name
* @param string|array|bool $value
* @return string
*/
public static function attribute($name, $value)
{
if ($name === $value) {
return ' ' . self::name($name);
} else {
if (is_numeric($name)) {
return ' ' . self::name($value);
} else {
return \arc\xml::attribute($name, $value);
}
}
}
function testNamespacedAttributes()
{
$xmlString = <<<EOF
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
<channel rdf:about="http://slashdot.org/">
<title>Slashdot</title>
<link>http://slashdot.org/</link>
<description>News for nerds, stuff that matters</description>
<dc:language>en-us</dc:language>
<dc:rights>Copyright 1997-2016, SlashdotMedia. All Rights Reserved.</dc:rights>
<dc:date>2016-01-30T20:38:08+00:00</dc:date>
<dc:publisher>Dice</dc:publisher>
<dc:creator>help@slashdot.org</dc:creator>
<dc:subject>Technology</dc:subject>
</channel>
</rdf:RDF>
EOF;
$xml = \arc\xml::parse($xmlString);
$xml->registerNamespace('dc', 'http://purl.org/dc/elements/1.1/');
$xml->registerNamespace('foo', 'http://www.w3.org/1999/02/22-rdf-syntax-ns#');
$xml->registerNamespace('rdf', 'http://www.w3.org/1999/02/22-rdf-syntax-ns#');
$about = $xml->channel['rdf:about'];
$this->assertEquals('http://slashdot.org/', $about);
$xml->channel['rdf:about'] = 'About tests';
$this->assertEquals('About tests', $xml->channel['rdf:about']);
unset($xml->channel['rdf:about']);
$this->assertEquals('', $xml->channel['rdf:about']);
$xml->channel['foo:about'] = 'About foo';
$this->assertEquals('About foo', $xml->channel['foo:about']);
$this->assertEquals('About foo', $xml->channel['rdf:about']);
$xml->registerNamespace('bar', 'http://arc.muze.nl/');
$xml->channel['bar:foo'] = 'Bar Foo';
$this->assertEquals('Bar Foo', $xml->channel['bar:foo']);
}
<?php
require __DIR__ . '/../vendor/autoload.php';
use arc\html as h;
use arc\xml as x;
$client = \arc\cache::proxy(\arc\http::client(), function ($params) {
return \arc\http\headers::parseCacheTime($params['target']->responseHeaders);
});
$feed = $client->get('https://www.nasa.gov/rss/dyn/breaking_news.rss');
try {
$rss = x::parse($feed);
} catch (\Exception $e) {
$rss = h::parse($feed);
}
$items = $rss->find('item');
foreach ($items as $item) {
echo h::article(h::h2(h::a(['href' => $item->link->nodeValue], $item->title->nodeValue)), h::div(['class' => 'body'], $item->description->nodeValue));
}
function aggregator($client)
{
$aggregator = \arc\lambda::prototype();
$aggregator->renderItem = function ($item) {
if ($item->enclosure['url']) {
$img = h::a(['href' => $item->link->nodeValue], h::img(['src' => $item->enclosure['url'], 'alt' => '']));
} else {
$img = '';
}
$pubDate = h::time(relativeTime(strtotime(current($item->xpath('.//pubDate|.//dc:date')))));
return h::article(['class' => 'white-panel'], $img, h::h2(h::a(['href' => $item->link->nodeValue], $item->title->nodeValue)), $pubDate, h::p(['class' => 'description'], h::raw(strip_tags($item->description->nodeValue))));
};
$aggregator->renderItems = function ($items) {
$itemsString = '';
if (count($items)) {
foreach ($items as $item) {
$itemsString .= $this->renderItem($item);
}
} else {
$itemsString = h::div(['class' => 'warning'], 'No articles in this feed.');
}
return h::raw($itemsString);
};
$aggregator->renderFeeds = function ($feeds) {
return implode(array_map(function ($feed, $index) {
return h::div(['class' => 'feed'], h::h2($feed->channel->title->nodeValue), h::form(['class' => 'remove', 'method' => 'POST'], h::button(['name' => 'removeFeed', 'value' => $index], 'Remove')), h::a(['href' => $feed->channel->link->nodeValue], $feed->channel->link->nodeValue));
}, $feeds, array_keys($feeds)));
};
$aggregator->getPubDate = function ($item) {
return strtotime(current($item->xpath('.//pubDate|.//dc:date')));
};
$aggregator->getItems = function ($feeds) {
$allitems = call_user_func_array('array_merge', array_map(function ($rss) {
return array_map(function ($item) use($rss) {
$item->appendChild($rss->channel->cloneNode());
return $item;
}, $rss->getElementsByTagName('item'));
}, $feeds));
usort($allitems, function ($a, $b) {
return $this->getPubDate($a) < $this->getPubDate($b);
});
return $allitems;
};
$aggregator->getFeed = function ($url) use($client) {
$feed = $client->get($url);
try {
$rss = \arc\xml::parse($feed);
} catch (\Exception $e) {
$rss = \arc\html::parse($feed);
}
$rss->registerXPathNamespace('dc', 'http://purl.org/dc/elements/1.1/');
return $rss;
};
$aggregator->render = function ($feeds) {
$feeds = array_map(function ($feed) {
return $this->getFeed($feed);
}, $feeds);
$items = $this->getItems($feeds);
return h::section(['class' => 'items'], h::raw($this->renderItems($items))) . h::section(['class' => 'feeds'], h::raw($this->renderFeeds($feeds)));
};
return $aggregator;
}
protected function getAttributes($attributes)
{
$result = '';
if (count($attributes)) {
foreach ($attributes as $name => $value) {
$result .= \arc\xml::attribute($name, $value);
}
}
return $result;
}
/**
* Search through the XML DOM with a single CSS selector
* @param string $query the CSS selector, most CSS 2 selectors work
* @return Proxy
*/
public function find($query)
{
$xpath = \arc\xml::css2Xpath($query);
return $this->_proxyResult($this->target->xpath($xpath));
}
public static function comment($content)
{
return \arc\xml::comment($content);
}