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OcrLang

docling_pdf

Enum OcrLang 

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pub enum OcrLang {
    En,
    Ch,
}
Expand description

OCR recognition language: which PP-OCRv3 model + dictionary pair runs.

The default is English (models/ocr_rec_en.onnx + models/en_dict.txt): the multilingual ch_ model reads Latin scripts with badly degraded word spacing (glued words on ordinary English scans), which is the common real-world case. Ch selects the ch_ pair (models/ocr_rec.onnx + models/ppocr_keys_v1.txt) — that is what upstream docling conformance is measured with, and scripts/conformance/pdf_*.sh pin it explicitly (by path, which wins over this selector).

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En

en_PP-OCRv3 — English-only, proper Latin word spacing.

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Ch

ch_PP-OCRv3 — multilingual; the docling-conformance model.

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impl OcrLang

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

Parse a user-supplied language id. None for anything but en/ch (trimmed, case-insensitive) — callers surface their own error/warning.

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pub fn from_env() -> Self

The process-level choice from DOCLING_RS_OCR_LANG (empty/unset → the English default; unknown values warn and use English).

Trait Implementations§

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impl Clone for OcrLang

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fn clone(&self) -> OcrLang

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for OcrLang

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impl Debug for OcrLang

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

Formats the value using the given formatter. Read more
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impl Default for OcrLang

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fn default() -> OcrLang

Returns the “default value” for a type. Read more
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impl Eq for OcrLang

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impl PartialEq for OcrLang

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for OcrLang

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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