Struct ModelManager 

pub struct ModelManager { /* private fields */ }

Manages downloading and caching of OCR models

This struct handles the lifecycle of the ONNX model file, including:

• Determining the cache location (~/.monocr/models/<revision>/)
• Downloading the model and its charset from HuggingFace if not present
• Providing the path to the model file for loading

Implementations

impl ModelManager

pub fn new() -> Self

Create a new ModelManager with default settings

Default Values

• Cache directory: ~/.monocr/models/<revision>/
• Base URL: https://huggingface.co/janakhpon/monocr/resolve/<revision>
• Model filename: monocr.onnx

Panics

Panics if the user’s home directory cannot be determined

pub fn cache_dir(&self) -> &Path

The directory this manager downloads into.

pub fn model_url(&self) -> String

The pinned download URL for the ONNX model.

pub fn charset_url(&self) -> String

The pinned download URL for the charset.

Same revision as the weights — that is the only way to be sure the two agree.

pub fn get_model_path(&self) -> Result<PathBuf>

Get the path to the ONNX model file, downloading it if the cache for this revision is empty.

pub fn get_charset(&self) -> Result<String>

Get the charset published alongside the pinned model.

Preferred over the embedded copy because it comes from the same revision as the weights.

Trait Implementations

impl Default for ModelManager

fn default() -> Self

Returns the “default value” for a type.