--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/gumbo-parser/src/util.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,62 @@
+// Copyright 2010 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Author: jdtang@google.com (Jonathan Tang)
+//
+// This contains some utility functions that didn't fit into any of the other
+// headers.
+
+#ifndef GUMBO_UTIL_H_
+#define GUMBO_UTIL_H_
+#ifdef _MSC_VER
+#ifndef _CRT_SECURE_NO_WARNINGS
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+#endif
+#include <stdbool.h>
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Forward declaration since it's passed into some of the functions in this
+// header.
+struct GumboInternalParser;
+
+// Utility function for allocating & copying a null-terminated string into a
+// freshly-allocated buffer.  This is necessary for proper memory management; we
+// have the convention that all const char* in parse tree structures are
+// freshly-allocated, so if we didn't copy, we'd try to delete a literal string
+// when the parse tree is destroyed.
+char* gumbo_copy_stringz(struct GumboInternalParser* parser, const char* str);
+
+// Allocate a chunk of memory, using the allocator specified in the Parser's
+// config options.
+void* gumbo_parser_allocate(
+    struct GumboInternalParser* parser, size_t num_bytes);
+
+// Deallocate a chunk of memory, using the deallocator specified in the Parser's
+// config options.
+void gumbo_parser_deallocate(struct GumboInternalParser* parser, void* ptr);
+
+// Debug wrapper for printf, to make it easier to turn off debugging info when
+// required.
+void gumbo_debug(const char* format, ...);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // GUMBO_UTIL_H_