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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| use crate::io::{AssetIo, AssetIoError}; | ||
| use anyhow::Result; | ||
| use async_trait::async_trait; | ||
| use std::{ | ||
| path::{Path, PathBuf}, | ||
| }; | ||
|
|
||
| use js_sys::Uint8Array; | ||
| use wasm_bindgen::{JsCast, JsValue}; | ||
| use wasm_bindgen_futures::JsFuture; | ||
| use web_sys::Response; | ||
|
|
||
| pub struct WebAssetIo { | ||
| pub root_path: PathBuf, | ||
| } | ||
|
|
||
| impl WebAssetIo { | ||
| pub fn new<P: AsRef<Path>>(path: P) -> Self { | ||
| WebAssetIo { | ||
| root_path: path.as_ref().into() | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #[derive(Debug)] | ||
| struct SafeJsFuture(JsFuture); | ||
|
|
||
| impl SafeJsFuture { | ||
| pub fn new(js_future: JsFuture) -> SafeJsFuture { | ||
| SafeJsFuture(js_future) | ||
| } | ||
| } | ||
|
|
||
| unsafe impl Send for SafeJsFuture {} | ||
|
|
||
| #[derive(Debug)] | ||
| pub struct SafeJsValue(JsValue); | ||
| unsafe impl Send for SafeJsValue {} | ||
|
|
||
| impl SafeJsValue { | ||
| pub fn dyn_into<T>(self) -> std::result::Result<T, JsValue> | ||
| where | ||
| T: JsCast, | ||
| { | ||
| self.0.dyn_into() | ||
| } | ||
| } | ||
|
|
||
| use futures_lite::FutureExt; | ||
|
|
||
| impl std::future::Future for SafeJsFuture { | ||
| type Output = Result<SafeJsValue, SafeJsValue>; | ||
|
|
||
| fn poll( | ||
| mut self: std::pin::Pin<&mut Self>, | ||
| cx: &mut std::task::Context<'_>, | ||
| ) -> std::task::Poll<Self::Output> { | ||
| let ret = self.0.poll(cx); | ||
| ret.map(|r| r.map(|f| SafeJsValue(f)).map_err(|f| SafeJsValue(f))) | ||
| } | ||
| } | ||
|
|
||
| #[async_trait] | ||
| impl AssetIo for WebAssetIo { | ||
| async fn load_path(&self, path: &Path) -> Result<Vec<u8>, AssetIoError> { | ||
| log::info!("root_path: {:?} path: {:?}", self.root_path, path); | ||
| let path = self.root_path.join(Path::new(path)); | ||
| log::info!("path: {:?}", path); | ||
| let resp_value = SafeJsFuture::new(JsFuture::from( | ||
| web_sys::window() | ||
| .unwrap() | ||
| .fetch_with_str(path.to_str().unwrap()) | ||
| )); | ||
| let response_data = SafeJsFuture::new(JsFuture::from( | ||
| resp_value | ||
| .await | ||
| .unwrap() | ||
| .dyn_into::<Response>() | ||
| .unwrap() | ||
| .array_buffer() | ||
| .unwrap(), | ||
| )); | ||
| let data = response_data.await.unwrap(); | ||
| Ok(Uint8Array::new(&data.0).to_vec()) | ||
| } | ||
|
|
||
| fn read_directory( | ||
| &self, | ||
| _path: &Path, | ||
| ) -> Result<Box<dyn Iterator<Item = PathBuf>>, AssetIoError> { | ||
| panic!("not supported on this platform"); | ||
| } | ||
|
|
||
| async fn save_path(&self, _path: &Path, _bytes: &[u8]) -> Result<(), AssetIoError> { | ||
| panic!("not supported on this platform"); | ||
| } | ||
|
|
||
| fn watch_path_for_changes(&self, _path: &Path) -> Result<(), AssetIoError> { | ||
| Ok(()) | ||
| } | ||
|
|
||
| fn watch_for_changes(&self) -> Result<(), AssetIoError> { | ||
| Ok(()) | ||
| } | ||
|
|
||
| fn is_directory(&self, _path: &Path) -> bool { | ||
| false | ||
| } | ||
| } |
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