From 84dc8897a796b91632cee1e0d736f811978022f6 Mon Sep 17 00:00:00 2001
From: Antonio Ospite <ao2@ao2.it>
Date: Fri, 13 May 2016 18:00:04 +0200
Subject: [PATCH] Use the Symfony Serializer component instead of the PEAR
 XML_Serializer

XML_Serializer is old and unmaintained, and it is going to be removed
from Debian, so use a more robust and supported alternative.
---
 rss_converter_instagram.com.xsl |  8 ++++----
 tweeper.php                     | 32 ++++++++++++++++++++------------
 2 files changed, 24 insertions(+), 16 deletions(-)

diff --git a/rss_converter_instagram.com.xsl b/rss_converter_instagram.com.xsl
index 5f1bb7f..aaab2e8 100644
--- a/rss_converter_instagram.com.xsl
+++ b/rss_converter_instagram.com.xsl
@@ -36,10 +36,10 @@
         <xsl:value-of disable-output-escaping="yes" select="php:function('Tweeper::generate_enclosure', string(text()))"/>
     </xsl:template>
 
-    <xsl:variable name="user-name" select="//ProfilePage/XML_Serializer_Tag/user/username"/>
+    <xsl:variable name="user-name" select="//ProfilePage/user/username"/>
 
     <!-- Some users do not specify the full name -->
-    <xsl:variable name="full-name" select="//ProfilePage/XML_Serializer_Tag/user/full_name"/>
+    <xsl:variable name="full-name" select="//ProfilePage/user/full_name"/>
     <xsl:variable name="screen-name">
         <xsl:choose>
             <xsl:when test="$full-name != ''">
@@ -51,7 +51,7 @@
         </xsl:choose>
     </xsl:variable>
 
-    <xsl:template match="//media/nodes/XML_Serializer_Tag">
+    <xsl:template match="//media/nodes">
         <xsl:variable name="item-content-image" select="./display_src"/>
         <xsl:variable name="item-content-caption" select="./caption"/>
         <xsl:variable name="item-permalink" select="concat($BaseURL, '/p/', ./code, '/')"/>
@@ -132,7 +132,7 @@
                         <xsl:value-of select="//user/profile_pic_url"/>
                     </url>
                 </image>
-                <xsl:apply-templates select="//media/nodes/XML_Serializer_Tag"/>
+                <xsl:apply-templates select="//media/nodes"/>
             </channel>
         </rss>
     </xsl:template>
diff --git a/tweeper.php b/tweeper.php
index a9fce9b..bed6350 100644
--- a/tweeper.php
+++ b/tweeper.php
@@ -18,7 +18,11 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-require_once 'XML/Serializer.php';
+require_once 'Symfony/Component/Serializer/autoload.php';
+
+use Symfony\Component\Serializer\Serializer;
+use Symfony\Component\Serializer\Encoder\XmlEncoder;
+use Symfony\Component\Serializer\Normalizer\ObjectNormalizer;
 
 date_default_timezone_set('UTC');
 
@@ -186,27 +190,31 @@ class Tweeper {
       return NULL;
     }
 
-    $data = json_decode($matches[1]);
+    // Apparenty the ObjectNormalizer used afterwards is not able to handle
+    // the stdClass object created by json_decode() with the default setting
+    // $assoc = false; so use $assoc = true 
+    $data = json_decode($matches[1], $assoc = true);
     if (!$data) {
       return NULL;
     }
 
+    $encoder = new XmlEncoder();
+    $normalizer = new ObjectNormalizer();
+    $serializer = new Serializer(array($normalizer), array($encoder));
+
     $serializer_options = array (
-      'addDecl' => TRUE,
-      'encoding' => "UTF-8",
-      'indent' => '  ',
-      'rootName' => $rootName,
+      'xml_encoding' => "UTF-8",
+      'xml_format_output' => TRUE,
+      'xml_root_node_name' => $rootName,
     );
 
-    $serializer = new XML_Serializer($serializer_options);
-
-    $status = $serializer->serialize($data);
-    if (PEAR::isError($status)) {
-      trigger_error($status->getMessage(), E_USER_ERROR);
+    $xml_data = $serializer->serialize($data, 'xml', $serializer_options);
+    if (!$xml_data) {
+      trigger_error("Cannot serialize data", E_USER_ERROR);
       return NULL;
     }
 
-    return $serializer->getSerializedData();
+    return $xml_data;
   }
 
   private function get_xml_instagram_com($html) {
-- 
2.1.4