--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/tesseract/src/training/unicharset/icuerrorcode.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,63 @@
+/**********************************************************************
+ * File:        icuerrorcode.h
+ * Description: Wrapper class for UErrorCode, with conversion operators for
+ *              direct use in ICU C and C++ APIs.
+ * Author:      Fredrik Roubert
+ * Created:     Thu July 4 2013
+ *
+ * Features:
+ * - The constructor initializes the internal UErrorCode to U_ZERO_ERROR,
+ *   removing one common source of errors.
+ * - Same use in C APIs taking a UErrorCode* (pointer) and C++ taking
+ *   UErrorCode& (reference), via conversion operators.
+ * - Automatic checking for success when it goes out of scope. On failure,
+ *   the destructor will log an error message and exit.
+ *
+ * Most of ICU will handle errors gracefully and provide sensible fallbacks.
+ * Using IcuErrorCode, it is therefore possible to write very compact code
+ * that does sensible things on failure and provides logging for debugging.
+ *
+ * Example:
+ * IcuErrorCode icuerrorcode;
+ * return collator.compareUTF8(a, b, icuerrorcode) == UCOL_EQUAL;
+ *
+ * (C) Copyright 2013, 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_ICUERRORCODE_H_
+#define TESSERACT_CCUTIL_ICUERRORCODE_H_
+
+#include <cstdlib> // for exit
+#include "tprintf.h"
+#include "unicode/errorcode.h" // From libicu
+
+namespace tesseract {
+
+class IcuErrorCode : public icu::ErrorCode {
+public:
+  IcuErrorCode() = default;
+  ~IcuErrorCode() override;
+
+protected:
+  void handleFailure() const override {
+    tprintf("ICU ERROR: %s\n", errorName());
+    exit(errorCode);
+  }
+
+private:
+  // Disallow implicit copying of object.
+  IcuErrorCode(const IcuErrorCode &) = delete;
+  void operator=(const IcuErrorCode &) = delete;
+};
+
+} // namespace tesseract
+#endif // TESSERACT_CCUTIL_ICUERRORCODE_H_