py version in progress

Author: pachadotdev

.Rbuildignore

@@ -27,3 +27,4 @@ vignettes/.*\.png$
 ^\.covrignore$
 ^vignettes/bondargentina_1\.png$
 ^vignettes/bondargentina_2\.png$
+^pypkg$

CRAN-SUBMISSION

@@ -1,3 +1,3 @@
 Version: 5.3.5
-Date: 2025-01-14 17:49:03 UTC
-SHA: e854fe79164464d5ba65a4029f767c2f32c51c48
+Date: 2025-01-14 19:57:37 UTC
+SHA: 2ea8287ef2c27901446bafa402728014d99904d4

pypkg/LICENSE.md

@@ -0,0 +1,194 @@
+Apache License
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pypkg/MANIFEST.in

@@ -0,0 +1,2 @@
+include cpp11tesseract/*.so
+include cpp11tesseract/*.py

pypkg/README.md

@@ -0,0 +1,6 @@
+# Debug
+
+```
+rm -rf build dist cpp11tesseract.egg-info
+pip install --use-pep517 .
+```

pypkg/cpp11tesseract.cpp

@@ -0,0 +1,47 @@
+#include <leptonica/allheaders.h>
+#include <pybind11/pybind11.h>
+#include <pybind11/stl.h>
+#include <tesseract/baseapi.h>
+
+#include <memory>
+
+namespace py = pybind11;
+
+class TesseractEngine {
+ public:
+  TesseractEngine(const std::string &lang = "eng") {
+    // engine = std::make_unique<tesseract::TessBaseAPI>();
+    engine.reset(new tesseract::TessBaseAPI());
+    if (engine->Init(NULL, lang.c_str())) {
+      throw std::runtime_error("Could not initialize Tesseract.");
+    }
+  }
+
+  ~TesseractEngine() { engine->End(); }
+
+  std::string ocr_file(const std::string &file) {
+    Pix *image = pixRead(file.c_str());
+    if (!image) {
+      throw std::runtime_error("Failed to read image.");
+    }
+
+    engine->SetImage(image);
+    char *text = engine->GetUTF8Text();
+    std::string result(text);
+    delete[] text;
+    pixDestroy(&image);
+
+    return result;
+  }
+
+ private:
+  std::unique_ptr<tesseract::TessBaseAPI> engine;
+};
+
+PYBIND11_MODULE(_cpp11tesseract, m) {
+  if (!py::hasattr(m, "TesseractEngine")) {
+    py::class_<TesseractEngine>(m, "TesseractEngine")
+        .def(py::init<const std::string &>())
+        .def("ocr_file", &TesseractEngine::ocr_file);
+  }
+}

pypkg/cpp11tesseract/__init__.py

@@ -0,0 +1,37 @@
+import os
+import sys
+import glob
+
+def _initialize_tessdata():
+    tessdata_prefix = os.getenv("TESSDATA_PREFIX", "/usr/share/tesseract-ocr/4.00/tessdata")
+    if not os.path.exists(tessdata_prefix):
+        os.makedirs(tessdata_prefix, exist_ok=True)
+    os.environ["TESSDATA_PREFIX"] = tessdata_prefix
+
+_initialize_tessdata()
+
+if "_cpp11tesseract" not in sys.modules:
+    package_dir = os.path.dirname(__file__)
+    shared_object_files = glob.glob(os.path.join(package_dir, "_cpp11tesseract*.so"))
+
+    if shared_object_files:
+        _shared_lib = shared_object_files[0]
+        sys.path.insert(0, package_dir)
+        _cpp11tesseract = __import__(os.path.basename(_shared_lib).split(".")[0])
+    else:
+        raise ImportError("Could not find _cpp11tesseract shared library!")
+
+    from ._cpp11tesseract import TesseractEngine
+else:
+    _cpp11tesseract = sys.modules["_cpp11tesseract"]
+
+from .ocr import ocr
+from .tesseract import TesseractManager
+from .tessdata import tesseract_download
+
+__all__ = [
+    "TesseractEngine",
+    "ocr",
+    "TesseractManager",
+    "tesseract_download"
+]

pypkg/cpp11tesseract/ocr.py

@@ -0,0 +1,28 @@
+import _cpp11tesseract
+
+def ocr(file: str, engine=None, HOCR=False, opw="", upw=""):
+    if isinstance(engine, str):
+        engine = _cpp11tesseract.TesseractEngine(engine)
+    
+    if not isinstance(engine, _cpp11tesseract.TesseractEngine):
+        raise ValueError("Invalid engine instance")
+
+    if isinstance(file, str):
+        return engine.ocr_file(file, HOCR)
+    elif isinstance(file, bytes):
+        return engine.ocr_raw(file, HOCR)
+    else:
+        raise ValueError("Argument 'file' must be a file path or raw bytes")
+
+def ocr_data(file: str, engine=None):
+    """Extracts text with bounding boxes and confidence scores."""
+    if isinstance(engine, str):
+        engine = _cpp11tesseract.TesseractEngine(engine)
+    
+    if not isinstance(engine, _cpp11tesseract.TesseractEngine):
+        raise ValueError("Invalid engine instance")
+
+    if isinstance(file, str):
+        return engine.ocr_file_data(file)
+    else:
+        raise ValueError("Argument 'file' must be a file path")

pypkg/cpp11tesseract/tessdata.py

@@ -0,0 +1,23 @@
+import os
+import requests
+
+def tesseract_download(lang, model="best", datapath=None):
+    if not isinstance(lang, str):
+        raise ValueError("Language must be a string")
+
+    repo = "tessdata_best" if model == "best" else "tessdata_fast"
+    url = f"https://github.com/tesseract-ocr/{repo}/raw/main/{lang}.traineddata"
+
+    if datapath is None:
+        datapath = os.getenv("TESSDATA_PREFIX", "/usr/share/tesseract-ocr/4.00/tessdata")
+
+    destfile = os.path.join(datapath, f"{lang}.traineddata")
+
+    response = requests.get(url, stream=True)
+    if response.status_code == 200:
+        with open(destfile, 'wb') as f:
+            for chunk in response.iter_content(1024):
+                f.write(chunk)
+        print(f"Downloaded {lang}.traineddata")
+    else:
+        raise Exception(f"Download failed: HTTP {response.status_code}")

pypkg/cpp11tesseract/tesseract.py

@@ -0,0 +1,16 @@
+import hashlib
+
+class TesseractManager:
+    _store = {}
+
+    @staticmethod
+    def get_engine(language="eng", datapath=None, configs=None, options=None, cache=True):
+        key = hashlib.md5(str((language, datapath, configs, options)).encode()).hexdigest()
+        
+        if cache and key in TesseractManager._store:
+            return TesseractManager._store[key]
+        
+        engine = _cpp11tesseract.TesseractEngine(language)
+        if cache:
+            TesseractManager._store[key] = engine
+        return engine