From fe58bcbf46a4bc7a9d95f443fdda370710662c76 Mon Sep 17 00:00:00 2001
From: Padraic Brady <padraic.brady@yahoo.com>
Date: Sun, 1 Aug 2010 20:21:09 +0100
Subject: [PATCH] Added Tag URI support when rendering Atom Entries - fixes
 ZF-10246

---
 src/Writer/Renderer/Entry/Atom.php      | 40 +++++++++++++++++++++++--
 test/Writer/Renderer/Entry/AtomTest.php | 18 +++++++++++
 2 files changed, 56 insertions(+), 2 deletions(-)

diff --git a/src/Writer/Renderer/Entry/Atom.php b/src/Writer/Renderer/Entry/Atom.php
index 47fbc05a..68d6f2f6 100644
--- a/src/Writer/Renderer/Entry/Atom.php
+++ b/src/Writer/Renderer/Entry/Atom.php
@@ -27,6 +27,7 @@
 use Zend\Feed\Writer;
 use Zend\Date;
 use Zend\URI;
+use Zend\Validator;
 
 /**
 * @uses DOMDocument
@@ -36,7 +37,8 @@
 * @uses \Zend\Feed\Writer\Renderer\Feed\Atom\Source
 * @uses \Zend\Feed\Writer\Renderer\RendererAbstract
 * @uses \Zend\Feed\Writer\Renderer\RendererInterface
-* @uses \Zend\Uri\Uri
+* @uses \Zend\Uri\Url
+* @uses \Zend\Validator
 * @uses tidy
 * @category Zend
 * @package Zend_Feed_Writer
@@ -292,7 +294,9 @@ protected function _setId(\DOMDocument $dom, \DOMElement $root)
                 $this->getDataContainer()->getLink());
         }
         if (!URI\URL::validate($this->getDataContainer()->getId()) &&
-        !preg_match("#^urn:[a-zA-Z0-9][a-zA-Z0-9\-]{1,31}:([a-zA-Z0-9\(\)\+\,\.\:\=\@\;\$\_\!\*\-]|%[0-9a-fA-F]{2})*#", $this->getDataContainer()->getId())) {
+        !preg_match("#^urn:[a-zA-Z0-9][a-zA-Z0-9\-]{1,31}:([a-zA-Z0-9\(\)\+\,\.\:\=\@\;\$\_\!\*\-]|%[0-9a-fA-F]{2})*#",
+            $this->getDataContainer()->getId()
+        ) && !$this->_validateTagUri($this->getDataContainer()->getId())) {
             throw new Exception('Atom 1.0 IDs must be a valid URI/IRI');
         }
         $id = $dom->createElement('id');
@@ -301,6 +305,38 @@ protected function _setId(\DOMDocument $dom, \DOMElement $root)
         $id->appendChild($text);
     }
     
+    /**
+     * Validate a URI using the tag scheme (RFC 4151)
+     *
+     * @param string $id
+     * @return bool
+     */
+    protected function _validateTagUri($id)
+    {
+        if (preg_match('/^tag:(?<name>.*),(?<date>\d{4}-?\d{0,2}-?\d{0,2}):(?<specific>.*)(.*:)*$/', $id, $matches)) {
+            $dvalid = false;
+            $nvalid = false;
+            $date = $matches['date'];
+            $d6 = strtotime($date);
+            if ((strlen($date) == 4) && $date <= date('Y')) {
+                $dvalid = true;
+            } elseif ((strlen($date) == 7) && ($d6 < strtotime("now"))) {
+                $dvalid = true;
+            } elseif ((strlen($date) == 10) && ($d6 < strtotime("now"))) {
+                $dvalid = true;
+            }
+            $validator = new Validator\EmailAddress;
+            if ($validator->isValid($matches['name'])) {
+                $nvalid = true;
+            } else {
+                $nvalid = $validator->isValid('info@' . $matches['name']);
+            }
+            return $dvalid && $nvalid;
+
+        }
+        return false;
+    }
+    
     /**
      * Set entry content 
      * 
diff --git a/test/Writer/Renderer/Entry/AtomTest.php b/test/Writer/Renderer/Entry/AtomTest.php
index a647f428..18783c0d 100644
--- a/test/Writer/Renderer/Entry/AtomTest.php
+++ b/test/Writer/Renderer/Entry/AtomTest.php
@@ -218,6 +218,24 @@ public function testEntryIdHasBeenSet()
         $entry = $feed->current();
         $this->assertEquals('urn:uuid:60a76c80-d399-11d9-b93C-0003939e0af6', $entry->getId());
     }
+    
+    public function testEntryIdHasBeenSetUsingSimpleTagUri()
+    {
+        $this->_validEntry->setId('tag:example.org,2010:/foo/bar/');
+        $renderer = new Renderer\Feed\Atom($this->_validWriter);
+        $feed = Reader\Reader::importString($renderer->render()->saveXml());
+        $entry = $feed->current();
+        $this->assertEquals('tag:example.org,2010:/foo/bar/', $entry->getId());
+    }
+    
+    public function testEntryIdHasBeenSetUsingComplexTagUri()
+    {
+        $this->_validEntry->setId('tag:diveintomark.org,2004-05-27:/archives/2004/05/27/howto-atom-linkblog');
+        $renderer = new Renderer\Feed\Atom($this->_validWriter);
+        $feed = Reader\Reader::importString($renderer->render()->saveXml());
+        $entry = $feed->current();
+        $this->assertEquals('tag:diveintomark.org,2004-05-27:/archives/2004/05/27/howto-atom-linkblog', $entry->getId());
+    }
 
     public function testFeedIdDefaultIsUsedIfNotSetByHand()
     {