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https://pyrossh.dev/repos/rust-embed.git
Discussions:
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rust macro which loads files into the rust binary at compile time during release and loads the file from the fs during dev.
287a73fe
—
Day Fisher 1 year ago
Add metadata_only to dynamic mode; add test
- impl/src/lib.rs +7 -3
- tests/metadata_only.rs +12 -0
impl/src/lib.rs
CHANGED
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@@ -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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110
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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)?; },
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@@ -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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161
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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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}
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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
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tests/metadata_only.rs
ADDED
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@@ -0,0 +1,12 @@
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1
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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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6
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struct Asset;
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7
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+
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8
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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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11
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assert_eq!(index_file.data.len(), 0);
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12
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}
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