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annotate mupdf-source/thirdparty/tesseract/src/training/unicharset/validate_grapheme.h @ 17:dd9cdb856310

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Remove PKG-INFO from the because it is regenerated automatically for the sdist
author Franz Glasner <fzglas.hg@dom66.de>
date Thu, 18 Sep 2025 17:40:40 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #ifndef TESSERACT_TRAINING_VALIDATE_GRAPHEME_H_
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2 #define TESSERACT_TRAINING_VALIDATE_GRAPHEME_H_
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4 #include "validator.h"
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6 namespace tesseract {
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8 // Subclass of Validator that validates and segments generic unicode into
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9 // grapheme clusters, including Latin with diacritics.
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10 class ValidateGrapheme : public Validator {
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11 public:
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12 ValidateGrapheme(ViramaScript script, bool report_errors) : Validator(script, report_errors) {}
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13 ~ValidateGrapheme() override = default;
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15 protected:
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16 // Consumes the next Grapheme in codes_[codes_used_++...] and copies it to
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17 // parts_ and output_. Returns true if a valid Grapheme was consumed,
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18 // otherwise does not increment codes_used_.
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19 bool ConsumeGraphemeIfValid() override;
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20 // Returns the CharClass corresponding to the given Unicode ch.
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21 CharClass UnicodeToCharClass(char32 ch) const override;
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23 private:
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24 // Helper returns true if the sequence prev_ch,ch is invalid.
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25 bool IsBadlyFormed(char32 prev_ch, char32 ch);
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26 // Helper returns true if the sequence prev_ch,ch is an invalid Indic vowel.
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27 static bool IsBadlyFormedIndicVowel(char32 prev_ch, char32 ch);
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28 // Helper returns true if the sequence prev_ch,ch is invalid Thai.
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29 static bool IsBadlyFormedThai(char32 prev_ch, char32 ch);
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30 };
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32 } // namespace tesseract
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34 #endif // TESSERACT_TRAINING_VALIDATE_GRAPHEME_H_