feat: impl supports_stream for svg_io

ok-nick · ok-nick · commit 6b464b837bba · 2025-10-27T16:05:21.000-04:00
diff --git a/sdk/src/asset_handlers/svg_io.rs b/sdk/src/asset_handlers/svg_io.rs
@@ -160,9 +160,13 @@ impl AssetIO for SvgIO {
         &SUPPORTED_TYPES
     }
 
-    fn supports_stream(&self, _stream: &mut dyn CAIRead) -> Result<bool> {
-        // TODO: complex
-        Ok(true)
+    fn supports_stream(&self, stream: &mut dyn CAIRead) -> Result<bool> {
+        stream.rewind()?;
+
+        let mut bytes = [0u8; 4096];
+        let len = stream.read(&mut bytes)?;
+
+        Ok(bytes[..len].windows(4).any(|pattern| pattern == b"<svg"))
     }
 }
 

Original file line number	Diff line number	Diff line change
`@@ -160,9 +160,13 @@ impl AssetIO for SvgIO {`
`160`	`160`	`&SUPPORTED_TYPES`
`161`	`161`	`}`
`162`	`162`
`163`		`- fn supports_stream(&self, _stream: &mut dyn CAIRead) -> Result<bool> {`
`164`		`- // TODO: complex`
`165`		`- Ok(true)`
	`163`	`+ fn supports_stream(&self, stream: &mut dyn CAIRead) -> Result<bool> {`
	`164`	`+ stream.rewind()?;`
	`165`	`+`
	`166`	`+ let mut bytes = [0u8; 4096];`
	`167`	`+ let len = stream.read(&mut bytes)?;`
	`168`	`+`
	`169`	`+ Ok(bytes[..len].windows(4).any(\|pattern\| pattern == b"<svg"))`
`166`	`170`	`}`
`167`	`171`	`}`
`168`	`172`