--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/source/fitz/xml-imp.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,90 @@
+// Copyright (C) 2022-2025 Artifex Software, Inc.
+//
+// This file is part of MuPDF.
+//
+// MuPDF is free software: you can redistribute it and/or modify it under the
+// terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// MuPDF is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+// details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
+//
+// Alternative licensing terms are available from the licensor.
+// For commercial licensing, see <https://www.artifex.com/> or contact
+// Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
+// CA 94129, USA, for further information.
+
+#ifndef XML_IMP_H
+
+#define XML_IMP_H
+
+#include "mupdf/fitz.h"
+
+/* These types are required for basic XML operation. */
+
+struct attribute
+{
+	char *value;
+	struct attribute *next;
+	char name[FZ_FLEXIBLE_ARRAY];
+};
+
+/**
+	We use a slightly grotty representation for an XML tree.
+
+	The topmost element of the tree is an fz_xml with up == NULL.
+	This signifies that we are a 'doc', rather than a 'node'.
+
+	We only ever get a 'doc' node at the root, and this contains
+	a reference count for the entire tree, together with the
+	fz_pool pointer used to allocate nodes.
+
+	All other structures are 'nodes'. If down is MAGIC_TEXT then
+	they are text nodes (with no children or attributes).
+	Otherwise, they are standard XML nodes with attributes
+	and children.
+*/
+
+struct fz_xml
+{
+	fz_xml *up, *down;
+	union
+	{
+		struct /* up != NULL */
+		{
+			fz_xml *prev, *next;
+#ifdef FZ_XML_SEQ
+			int seq;
+#endif
+			union
+			{
+				char text[1]; /* down == MAGIC_TEXT */
+				struct /* down != MAGIC_TEXT */
+				{
+					struct attribute *atts;
+					char name[FZ_FLEXIBLE_ARRAY];
+				} d;
+			} u;
+		} node;
+		struct /* up == NULL */
+		{
+			int refs;
+			fz_pool *pool;
+		} doc;
+	} u;
+};
+
+#define MAGIC_TEXT ((fz_xml *)1)
+
+#define FZ_TEXT_ITEM(item) (item && item->down == MAGIC_TEXT)
+#define FZ_DOCUMENT_ITEM(item) (item && item->up == NULL)
+
+size_t xml_parse_entity(int *c, const char *a);
+
+#endif