Adds PHP.net CfP-Parser

This currently is a dummy-solution as not really a lot of information
can be retrieved from the PHP.net-Website as the infors there aren'T
really reliable or informative. Currently a location is missing as well
as an informartion to a CfP-End-time.

src/Entity/Cfp.php

@@ -100,6 +100,7 @@ public function toArray()
             'latitude'       => (float) $this->latitude,
             'longitude'      => (float) $this->longitude,
             'timezone'       => $this->timezone,
+            'image'          => $this->iconUri,
         );
     }
 

src/Parser/PhpNetCfpParser.php

@@ -0,0 +1,102 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Callingallpapers\Parser;
+
+use Callingallpapers\Entity\Cfp;
+use Callingallpapers\Writer\WriterInterface;
+use GuzzleHttp\Client;
+
+class PhpNetCfpParser implements ParserInterface
+{
+
+    public function parse(WriterInterface $writer)
+    {
+        $uri = 'http://php.net/archive/archive.xml';
+        $client = new Client();
+        $content = $client->get($uri)->getBody();
+
+        $contents = new \ArrayObject();
+        $now = new \DateTimeImmutable();
+        $then = $now->sub(new \DateInterval('P1Y'));
+
+        $dom = new \DOMDocument('1.0', 'UTF-8');
+        $dom->loadXML($content, LIBXML_NOBLANKS ^ LIBXML_XINCLUDE);
+        $dom->documentURI = $uri;
+
+        $xpath = new \DOMXPath($dom);
+        $nodes = $xpath->query('//xi:include[@href]', $dom->parentNode);
+
+        foreach ($nodes as $item) {
+            /** @var \DOMNode $item */
+            $href = $item->attributes->getNamedItem('href');
+            if (! preg_match('/\/([\d\-]{10})/', $href->textContent, $result)) {
+                continue;
+            }
+
+            $date = new \DateTime($result[1]);
+
+            if (! $date instanceof \DateTime) {
+                continue;
+            }
+
+            if ($then > $date) {
+                $item->parentNode->removeChild($item);
+                continue;
+            }
+        }
+
+        $dom->xinclude();
+        $dom->normalizeDocument();
+
+        $xpath->registerNamespace('default', 'http://php.net/ns/news');
+        $xpath->registerNamespace('f', 'http://www.w3.org/2005/Atom');
+
+        $items = $xpath->query('//f:category[@term="cfp"]');
+
+        foreach ($items as $node) {
+            try {
+                /** @var \DOMNode $node */
+                $node    = $node->parentNode;
+                $item    = $xpath->query('default:finalTeaserDate', $node)->item(0);
+                $cfpDate = new \DateTime($item->textContent);
+
+                if ($now > $cfpDate) {
+                    continue;
+                }
+
+                $item = $xpath->query('published', $node)->item(0);
+                $cfpStart = new \DateTime($item->textContent);
+                var_Dump($cfpStart);
+
+                $info = new Cfp();
+
+                $nameNodes            = $xpath->query('f:title', $node);
+                $info->conferenceName = $nameNodes->item(0)->textContent;
+
+                $descNode          = $xpath->query('f:content', $node)->item(0);
+                $info->description = $dom->saveXML($descNode);
+
+                $info->dateEnd   = $cfpDate;
+                $info->dateStart = $cfpStart;
+                $info->tags      = ['PHP'];
+
+                $cfpImageNode    = $xpath->query('default:newsImage', $node)->item(0);
+                $info->uri       = $cfpImageNode->attributes->getNamedItem('link')->textContent;
+                $info->conferenceUri = $cfpImageNode->attributes->getNamedItem('link')->textContent;
+                $info->iconUri = 'http://php.net/images/news/' . $cfpImageNode->textContent;
+
+                var_Dump($info->toArray());
+          //      $writer->write($info, 'php.net');
+            } catch (\Exception $e) {
+                echo $e->getMessage() . "\n";
+            }
+        }
+    }
+}