--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/tesseract/src/ccutil/unicharmap.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,74 @@
+///////////////////////////////////////////////////////////////////////
+// File:        unicharmap.h
+// Description: Unicode character/ligature to integer id class.
+// Author:      Thomas Kielbus
+// Created:     Wed Jun 28 17:05:01 PDT 2006
+//
+// (C) Copyright 2006, Google Inc.
+// 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.
+//
+///////////////////////////////////////////////////////////////////////
+
+#ifndef TESSERACT_CCUTIL_UNICHARMAP_H_
+#define TESSERACT_CCUTIL_UNICHARMAP_H_
+
+#include <tesseract/unichar.h>
+
+namespace tesseract {
+
+// A UNICHARMAP stores unique unichars. Each of them is associated with one
+// UNICHAR_ID.
+class TESS_API UNICHARMAP {
+public:
+  // Create an empty UNICHARMAP
+  UNICHARMAP();
+
+  ~UNICHARMAP();
+
+  // Insert the given unichar representation in the UNICHARMAP and associate it
+  // with the given id. The length of the representation MUST be non-zero.
+  void insert(const char *const unichar_repr, UNICHAR_ID id);
+
+  // Return the id associated with the given unichar representation,
+  // this representation MUST exist within the UNICHARMAP. The first
+  // length characters (maximum) from unichar_repr are used. The length
+  // MUST be non-zero.
+  UNICHAR_ID unichar_to_id(const char *const unichar_repr, int length) const;
+
+  // Return true if the given unichar representation is already present in the
+  // UNICHARMAP. The first length characters (maximum) from unichar_repr are
+  // used. The length MUST be non-zero.
+  bool contains(const char *const unichar_repr, int length) const;
+
+  // Return the minimum number of characters that must be used from this string
+  // to obtain a match in the UNICHARMAP.
+  int minmatch(const char *const unichar_repr) const;
+
+  // Clear the UNICHARMAP. All previous data is lost.
+  void clear();
+
+private:
+  // The UNICHARMAP is represented as a tree whose nodes are of type
+  // UNICHARMAP_NODE.
+  struct UNICHARMAP_NODE {
+    UNICHARMAP_NODE();
+    ~UNICHARMAP_NODE();
+
+    UNICHARMAP_NODE *children;
+    UNICHAR_ID id;
+  };
+
+  UNICHARMAP_NODE *nodes;
+};
+
+} // namespace tesseract
+
+#endif // TESSERACT_CCUTIL_UNICHARMAP_H_