When Tesseract reports a page with many diacritics, OCRmyPDF rewrites the
message to "lots of diacritics - possibly poor OCR", which hid the
original wording. Keep the interpreted hint but also emit Tesseract's raw
line at debug verbosity (-v 1) so users can see exactly what Tesseract
reported.
Closes#1566.
When Tesseract cannot find its 'hocr' or 'txt' config files in the
tessdata configs/ directory, it prints "read_params_file: Can't open"
warnings, exits 0, and produces no output. OCRmyPDF then crashed with a
confusing FileNotFoundError on the missing hOCR file (issue #1687).
Promote read_params_file warnings to TesseractConfigError with guidance
on the likely cause, and verify the expected output file exists after
Tesseract claims success as defense-in-depth for other silent-failure
modes.
- Add hOCR test fixtures for Latin, Arabic, CJK, Devanagari scripts
- Add tests for fpdf2 renderer, multi-font manager, system font provider
- Add multilingual rendering tests
- Update existing tests to use fpdf2 renderer
Previously we produced a raster image, then multiplied image width
by DPI to get the page size. However if there is rounding the
page size may not match exactly. In this modified approach we
constrain the page size to match.
Breaks tests/test_main.py::test_tesseract_missing_tessdata because
conftest.py does not update options.tesseract_env before testing options
for some reason, and tesseract.has_textonly_pdf raises an exception
instead of returning False as the test assumes.
James R. Barlow
James R. Barlow