Add ANSALPR country format

modules/ANSLPR/ANSLPR_OCR.h

@@ -109,6 +109,41 @@ namespace ANSCENTER
         // --- Original model zip path (reused for ANSONNXOCR initialization) ---
         std::string     _modelZipFilePath;
 
+        // ────────────────────────────────────────────────────────────────
+        //  Country-specific plate-format processing — Vietnam-only.
+        //
+        //  When `_country == VIETNAM`, `AnalyseLicensePlateText` strips
+        //  any remaining non-alphanumeric characters, uppercases the
+        //  result, and validates it against `_plateFormats` (the same
+        //  11-pattern list ANSALPR_OD installs for Vietnam).  Plates
+        //  that don't match any configured format are dropped — the
+        //  return value is "" and the caller skips the plate.
+        //
+        //  Every other country (Japan, China, Indonesia, Australia, USA,
+        //  …) returns the input unchanged so the upstream
+        //  StripPlateSeparators output flows through verbatim, preserving
+        //  kana / kanji / region-specific punctuation.
+        //
+        //  Hooked in after StripPlateSeparators and before the ALPRChecker
+        //  voter, so locked text + skip-when-locked output are emitted in
+        //  the canonical Vietnam form just like ANSALPR_OD's path.
+        // ────────────────────────────────────────────────────────────────
+        [[nodiscard]] std::string AnalyseLicensePlateText(const std::string& ocrText);
+
+        // Format match helper — patterns: 'd' = any digit, 'l' = any
+        // letter, every other character is a literal that must match
+        // exactly.  Returns true when `_plateFormats` is empty (i.e.
+        // no formats configured → no validation, accept all).
+        [[nodiscard]] bool MatchesPlateFormat(const std::string& plate) const;
+
+        // Reset `_plateFormats` to the default list for the current
+        // `_country`.  Called at the end of Initialize (after country.txt
+        // is read) and from SetCountry so a runtime country switch picks
+        // up the right format set on the very next frame.  Currently
+        // populates Vietnam's 11 standard patterns; other countries leave
+        // the list empty (= no validation).
+        void ApplyCountryDefaultPlateFormats();
+
         // --- Colour detection helpers ---
         [[nodiscard]] std::string DetectLPColourDetector(const cv::Mat& lprROI, const std::string& cameraId);
         [[nodiscard]] std::string DetectLPColourCached(const cv::Mat& lprROI, const std::string& cameraId, const std::string& plateText);