Add wxr-parser-large-file.

.wp-env.json

@@ -0,0 +1,7 @@
+{
+  "plugins": ["."],
+  "config": {
+    "WP_UPLOAD_MAX_FILESIZE": "128M",
+    "WP_MEMORY_LIMIT": "256M"
+  }
+}

src/helpers/class-xml-character-filter.php

@@ -0,0 +1,72 @@
+<?php
+/**
+ * XML_Character_Filter file.
+ *
+ * @package WordPress
+ * @subpackage Importer
+ */
+
+// String which will be prefixed to stream URLs to add this filter.
+define( 'XML_CHARACTER_FILTER_PREFIX', 'php://filter/read=xml_character_filter/resource=' );
+
+/**
+ * Class XML_Character_Filter.
+ *
+ * XML Character Stream Filter to sanitize XML input. Removes control characters except newline, tab and return.
+ *
+ * Usage: php://filter/read=xml_character_filter/resource=zip://archive.zip#import.xml;
+ */
+class XML_Character_Filter extends php_user_filter {
+	/**
+	 * List of control characters to remove.
+	 *
+	 * @var array
+	 */
+	private $chars = array();
+
+	/**
+	 * This method is called whenever data is read from or written to the attached stream (such as with fread() or fwrite()).
+	 *
+	 * @param resource $in       A resource pointing to a bucket brigade which contains one or more bucket objects containing data to be filtered.
+	 * @param resource $out      A resource pointing to a second bucket brigade into which the modified buckets should be placed.
+	 * @param int      $consumed Reference to the length of the data that the filter reads in and alters.
+	 * @param bool     $closing  Whether the stream is in the process of closing.
+	 * @return int PSFS_PASS_ON|PSFS_FEED_ME|PSFS_ERR_FATAL.
+	 */
+	public function filter( $in, $out, &$consumed, $closing ) {
+		while ( $bucket = stream_bucket_make_writeable( $in ) ) { //phpcs:ignore WordPress.CodeAnalysis.AssignmentInCondition
+			$consumed    += $bucket->datalen;
+			$bucket->data = $this->replace_chars( $bucket->data );
+			stream_bucket_append( $out, $bucket );
+		}
+
+		return PSFS_PASS_ON;
+	}
+
+	/**
+	 * This method is called during instantiation of the filter class object.
+	 *
+	 * @return bool
+	 */
+	public function onCreate() {
+		for ( $ascii_num = 0; $ascii_num < 32; $ascii_num++ ) {
+			if ( 9 !== $ascii_num && 10 !== $ascii_num && 13 !== $ascii_num ) {
+				$this->chars[] = chr( $ascii_num );
+			}
+		}
+		$this->chars[] = chr( 127 );
+
+		return true;
+	}
+
+	/**
+	 * Replace control characters.
+	 *
+	 * @param string $string Data to replace.
+	 * @return string
+	 */
+	private function replace_chars( $string ) {
+		return str_replace( $this->chars, ' ', $string );
+	}
+}
+stream_filter_register( 'xml_character_filter', 'XML_Character_Filter' );