~repos /rust-embed

#rust#proc-macro#http

git clone https://pyrossh.dev/repos/rust-embed.git

rust macro which loads files into the rust binary at compile time during release and loads the file from the fs during dev.

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287a73fe — Day Fisher

1 year ago 
Add metadata_only to dynamic mode; add test
Files changed (2) hide show
  1. impl/src/lib.rs +7 -3
  2. tests/metadata_only.rs +12 -0
impl/src/lib.rs CHANGED
@@ -107,7 +107,7 @@ fn embedded(
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  })
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  }
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- fn dynamic(ident: &syn::Ident, folder_path: String, prefix: Option<&str>, includes: &[String], excludes: &[String]) -> TokenStream2 {
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+ fn dynamic(ident: &syn::Ident, folder_path: String, prefix: Option<&str>, includes: &[String], excludes: &[String], metadata_only: bool) -> TokenStream2 {
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  let (handle_prefix, map_iter) = if let ::std::option::Option::Some(prefix) = prefix {
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  (
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  quote! { let file_path = file_path.strip_prefix(#prefix)?; },
@@ -125,6 +125,10 @@ fn dynamic(ident: &syn::Ident, folder_path: String, prefix: Option<&str>, includ
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  const EXCLUDES: &[&str] = &[#(#excludes),*];
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  };
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+ let strip_contents = metadata_only.then_some(quote! {
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+ .map(|mut file| { file.data = ::std::default::Default::default(); file })
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+ });
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+
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  let canonical_folder_path = Path::new(&folder_path).canonicalize().expect("folder path must resolve to an absolute path");
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  let canonical_folder_path = canonical_folder_path.to_str().expect("absolute folder path must be valid unicode");
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@@ -158,7 +162,7 @@ fn dynamic(ident: &syn::Ident, folder_path: String, prefix: Option<&str>, includ
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  }
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  if rust_embed::utils::is_path_included(&rel_file_path, INCLUDES, EXCLUDES) {
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- rust_embed::utils::read_file_from_fs(&canonical_file_path).ok()
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+ rust_embed::utils::read_file_from_fs(&canonical_file_path).ok() #strip_contents
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  } else {
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  ::std::option::Option::None
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  }
@@ -206,7 +210,7 @@ fn generate_assets(
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  return embedded_impl;
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  }
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  let embedded_impl = embedded_impl?;
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- let dynamic_impl = dynamic(ident, absolute_folder_path, prefix.as_deref(), &includes, &excludes);
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+ let dynamic_impl = dynamic(ident, absolute_folder_path, prefix.as_deref(), &includes, &excludes, metadata_only);
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  Ok(quote! {
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  #embedded_impl
tests/metadata_only.rs ADDED
@@ -0,0 +1,12 @@
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+ use rust_embed::{EmbeddedFile, RustEmbed};
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+
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+ #[derive(RustEmbed)]
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+ #[folder = "examples/public/"]
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+ #[metadata_only = true]
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+ struct Asset;
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+
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+ #[test]
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+ fn file_is_empty() {
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+ let index_file: EmbeddedFile = Asset::get("index.html").expect("index.html exists");
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+ assert_eq!(index_file.data.len(), 0);
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+ }