Eliminate assets crate

crates/util/Cargo.toml

@@ -21,6 +21,7 @@ isahc.workspace = true
 smol.workspace = true
 url = "2.2"
 rand.workspace = true
+rust-embed.workspace = true
 tempdir = { workspace = true, optional = true }
 serde.workspace = true
 serde_json.workspace = true

crates/util/src/util.rs

@@ -7,6 +7,7 @@ pub mod paths;
 pub mod test;
 
 use std::{
+    borrow::Cow,
     cmp::{self, Ordering},
     ops::{AddAssign, Range, RangeInclusive},
     panic::Location,
@@ -284,6 +285,14 @@ impl<T: Rng> Iterator for RandomCharIter<T> {
     }
 }
 
+/// Get an embedded file as a string.
+pub fn asset_str<A: rust_embed::RustEmbed>(path: &str) -> Cow<'static, str> {
+    match A::get(path).unwrap().data {
+        Cow::Borrowed(bytes) => Cow::Borrowed(std::str::from_utf8(bytes).unwrap()),
+        Cow::Owned(bytes) => Cow::Owned(String::from_utf8(bytes).unwrap()),
+    }
+}
+
 // copy unstable standard feature option unzip
 // https://github.com/rust-lang/rust/issues/87800
 // Remove when this ship in Rust 1.66 or 1.67