Enum OcrEngine 

pub enum OcrEngine {
    PpOcr,
    Tesseract,
}

Which OCR engine recognizes text (#460): the built-in PP-OCRv3 recognizer (+ the RapidOCR text detector) — the default and the engine every conformance baseline is pinned against — or the system tesseract binary (see [crate::tesseract]), docling’s TesseractCliOcrOptions counterpart. Both consume the same layout-region crops and produce the same cells; everything downstream is engine-agnostic.

Variants

PpOcr

PP-OCRv3 recognition via ONNX Runtime (docling’s rapidocr kind).

Tesseract

The tesseract CLI (docling’s tesseract kind).

Implementations

impl OcrEngine

pub const ACCEPTED: &'static str = "ppocr | tesseract"

The accepted spellings, for error messages and docs.

pub fn parse(s: &str) -> Option<Self>

Parse an engine id: ppocr (also pp-ocr, rapidocr, docling’s kind name) or tesseract (also tesseract_cli, tesserocr), trimmed and case-insensitive. None for anything else.

pub fn from_env() -> Self

The process-level choice from DOCLING_RS_OCR_ENGINE (empty/unset → PP-OCR; unknown values warn and use PP-OCR).

pub fn validate_lang(self, raw: &str) -> Result<(), String>

Whether raw is an ocr_lang this engine can act on — what the option surfaces validate up front: the en/ch model switch (or a BCP-47 tag for either, OcrLang::parse) under PP-OCR; tessdata stems and BCP-47 tags (crate::tesseract::lang_arg) under Tesseract. The Err says what is accepted.

Trait Implementations

impl Clone for OcrEngine

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for OcrEngine

impl Debug for OcrEngine

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for OcrEngine

fn default() -> Self

Returns the “default value” for a type.

impl Eq for OcrEngine

impl PartialEq for OcrEngine

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for OcrEngine