feat: use Arc & Mutex for LepTess

swordfish-common/src/lib.rs

@@ -5,13 +5,11 @@ pub mod constants;
 pub mod tesseract;
 
 pub fn setup_logger(level: &str) -> Result<(), fern::InitError> {
-    // I don't really know how to do it because the unset variable trick doesn't work
-    // since the types can be
     let formatter = fmt::format()
         .with_level(true)
         .with_target(true)
         .with_thread_ids(false)
-        .with_thread_names(false); // include the name of the current thread.pretty();
+        .with_thread_names(false);
     let filter = EnvFilter::builder()
         .from_env()
         .unwrap()

swordfish-common/src/tesseract.rs

@@ -1 +1,13 @@
-pub use leptess::LepTess;
+pub use leptess::{LepTess, Variable};
+
+pub fn init_tesseract() -> Result<LepTess, String> {
+    let mut lep_tess = match LepTess::new(None, "eng") {
+        Ok(lep_tess) => lep_tess,
+        Err(why) => return Err(format!("Failed to initialize Tesseract: {:?}", why)),
+    };
+    match lep_tess.set_variable(Variable::TesseditCharWhitelist, "0123456789") {
+        Ok(_) => (),
+        Err(why) => return Err(format!("Failed to set whitelist: {:?}", why)),
+    };
+    Ok(lep_tess)
+}