feat: add deno_rust_wasm_qr_decode

__wasm/deno_rust_wasm_qr_decode/rs_lib/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "rs_lib"
+version = "0.0.0"
+edition = "2021"
+
+[lib]
+crate_type = ["cdylib"]
+
+[profile.release]
+codegen-units = 1
+incremental = true
+lto = true
+opt-level = "z"
+
+[dependencies]
+wasm-bindgen = "=0.2.81"
+bardecoder = "0.3.0"
+image = "0.23"
+

__wasm/deno_rust_wasm_qr_decode/rs_lib/src/lib.rs

@@ -0,0 +1,21 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub fn decode_qr(image_bytes: &[u8]) -> String {
+    let img = match image::load_from_memory(image_bytes) {
+        Ok(img) => img,
+        Err(e) => return format!("ERROR:{}", e),
+    };
+    let decoder = bardecoder::default_decoder();
+    let results = decoder.decode(&img);
+
+    let mut r = vec![];
+    for result in results {
+        match result {
+            Ok(s) => r.push(vec![s, "".to_string()]),
+            Err(e) => r.push(vec!["".to_string(), format!("error: {}", e)]),
+        }
+    }
+    format!("{:?}", r)
+}
+