--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/tesseract/src/ccutil/tesserrstream.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,68 @@
+// File:        tesserrstream.h
+// Description: C++ stream which enhances tprintf
+// Author:      Stefan Weil
+//
+// (C) Copyright 2024
+// 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_TESSERRSTREAM_H
+#define TESSERACT_CCUTIL_TESSERRSTREAM_H
+
+#include "tprintf.h"
+#include <tesseract/export.h> // for TESS_API
+
+#include <ostream> // for std::ostream
+
+namespace tesseract {
+
+class TessStreamBuf : public std::streambuf {
+public:
+  TessStreamBuf() = default;
+
+protected:
+  virtual int_type overflow(int_type c) override {
+    if (c != EOF) {
+      if (debugfp == nullptr) {
+        debugfp = get_debugfp();
+      }
+      if (fputc(c, debugfp) == EOF) {
+        return EOF;
+      }
+    }
+    return c;
+  }
+
+  virtual std::streamsize xsputn(const char* s, std::streamsize n) override {
+    if (debugfp == nullptr) {
+      debugfp = get_debugfp();
+    }
+    return fwrite(s, 1, n, debugfp);
+  }
+
+private:
+  FILE *debugfp = nullptr;
+};
+
+class TessErrStream : public std::ostream {
+private:
+  TessStreamBuf buf;
+
+public:
+  TessErrStream() : std::ostream(nullptr), buf() {
+    rdbuf(&buf);
+  }
+};
+
+extern TESS_API TessErrStream tesserr;
+
+} // namespace tesseract
+
+#endif // TESSERACT_CCUTIL_TESSERRSTREAM_H