RdfXml.php.patch

# This patch is created from https://github.com/easyrdf/easyrdf/pull/370
# It tries to improve the Report Import agent without updating the easyrdf
# from 0.9.0 to latest version due to PHP version constraints.
#
# The copyrights are help by the respective authors (see
# https://github.com/easyrdf/easyrdf/blob/master/LICENSE.md).

--- vendor/easyrdf/easyrdf/lib/EasyRdf/Parser/RdfXml.php	2020-09-08 17:14:43.328912848 +0530
+++ vendor/easyrdf/easyrdf/lib/EasyRdf/Parser/RdfXml.php	2021-01-27 14:06:18.391440952 +0530
@@ -795,14 +795,22 @@
         /* xml parser */
         $this->initXMLParser();
 
-        /* parse */
-        if (!xml_parse($this->xmlParser, $data, false)) {
+        /* split into 1MB chunks, so XML parser can cope */
+        $chunkSize = 1000000;
+        $length = strlen($data);
+        for ($pos=0; $pos < $length; $pos += $chunkSize) {
+          $chunk = substr($data, $pos, $chunkSize);
+          $isLast = ($pos + $chunkSize > $length);
+
+          /* Parse the chunk */
+          if (!xml_parse($this->xmlParser, $chunk, $isLast)) {
             $message = xml_error_string(xml_get_error_code($this->xmlParser));
             throw new EasyRdf_Parser_Exception(
-                'XML error: "' . $message . '"',
-                xml_get_current_line_number($this->xmlParser),
-                xml_get_current_column_number($this->xmlParser)
-            );
+              'XML error: "' . $message . '"',
+              xml_get_current_line_number($this->xmlParser),
+              xml_get_current_column_number($this->xmlParser)
+              );
+          }
         }
 
         xml_parser_free($this->xmlParser);