--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/tesseract/src/training/unicharset/validate_khmer.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,26 @@
+#ifndef TESSERACT_TRAINING_VALIDATE_KHMER_H_
+#define TESSERACT_TRAINING_VALIDATE_KHMER_H_
+
+#include "validator.h"
+
+namespace tesseract {
+
+// Subclass of Validator that validates and segments Khmer.
+class ValidateKhmer : public Validator {
+public:
+  ValidateKhmer(ViramaScript script, bool report_errors) : Validator(script, report_errors) {}
+  ~ValidateKhmer() override = default;
+
+protected:
+  // Returns whether codes matches the pattern for an Khmer Grapheme.
+  // Consumes the next Grapheme in codes_[codes_used_++...] and copies it to
+  // parts_ and output_. Returns true if a valid Grapheme was consumed,
+  // otherwise does not increment codes_used_.
+  bool ConsumeGraphemeIfValid() override;
+  // Returns the CharClass corresponding to the given Unicode ch.
+  CharClass UnicodeToCharClass(char32 ch) const override;
+};
+
+} // namespace tesseract
+
+#endif // TESSERACT_TRAINING_VALIDATE_KHMER_H_