Vendor dependencies for 0.3.0 release

vendor/bevy_text/src/font_loader.rs

@@ -0,0 +1,40 @@
+use crate::Font;
+use bevy_asset::{io::Reader, AssetLoader, LoadContext};
+use thiserror::Error;
+
+#[derive(Default)]
+/// An [`AssetLoader`] for [`Font`]s, for use by the [`AssetServer`](bevy_asset::AssetServer)
+pub struct FontLoader;
+
+/// Possible errors that can be produced by [`FontLoader`]
+#[non_exhaustive]
+#[derive(Debug, Error)]
+pub enum FontLoaderError {
+    /// The contents that could not be parsed
+    #[error(transparent)]
+    Content(#[from] cosmic_text::ttf_parser::FaceParsingError),
+    /// An [IO](std::io) Error
+    #[error(transparent)]
+    Io(#[from] std::io::Error),
+}
+
+impl AssetLoader for FontLoader {
+    type Asset = Font;
+    type Settings = ();
+    type Error = FontLoaderError;
+    async fn load(
+        &self,
+        reader: &mut dyn Reader,
+        _settings: &(),
+        _load_context: &mut LoadContext<'_>,
+    ) -> Result<Font, Self::Error> {
+        let mut bytes = Vec::new();
+        reader.read_to_end(&mut bytes).await?;
+        let font = Font::try_from_bytes(bytes)?;
+        Ok(font)
+    }
+
+    fn extensions(&self) -> &[&str] {
+        &["ttf", "otf"]
+    }
+}