Struct TesseractOptions 

pub struct TesseractOptions {
    pub cmd: String,
    pub lang: Option<String>,
    pub psm: Option<u8>,
    pub tessdata_dir: Option<String>,
}

How the tesseract binary is invoked.

Fields

cmd: String

Command or path of the executable (DOCLING_TESSERACT, default tesseract).

lang: Option<String>

The -l argument — tessdata stems joined with +, already mapped by lang_arg. None runs Tesseract’s own default (eng).

psm: Option<u8>

Page segmentation mode (--psm, DOCLING_RS_TESSERACT_PSM, 0–13). None keeps Tesseract’s default (3, fully automatic) — the right choice for layout-region crops; 6 (one uniform block) or 11 (sparse text) help on odd inputs.

tessdata_dir: Option<String>

--tessdata-dir (DOCLING_RS_TESSDATA_DIR); None leaves the lookup to Tesseract (TESSDATA_PREFIX, then its build-time default).

Implementations

impl TesseractOptions

pub fn from_env(lang: Option<String>) -> Self

The process-level options: lang from the caller (the mapped ocr_lang), else DOCLING_RS_OCR_LANG read as Tesseract’s language list (#889: DOCLING_RS_OCR_LANG=rus+eng in a container’s environment never reached Tesseract, which ran its eng default; an invalid value warns and leaves that default), the rest from the environment. A DOCLING_RS_TESSERACT_PSM outside 0–13 warns and is ignored.

Trait Implementations

impl Clone for TesseractOptions

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TesseractOptions

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

Formats the value using the given formatter.

impl Eq for TesseractOptions

impl PartialEq for TesseractOptions

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for TesseractOptions