fallback to std::env::var("CARGO_PKG_NAME") (#122)

i18n-embed-fl/src/lib.rs

@@ -340,10 +340,13 @@ pub fn fl(input: TokenStream) -> TokenStream {
     let fluent_loader = input.fluent_loader;
     let message_id = input.message_id;
 
-    let manifest = find_crate::Manifest::new().expect("Error reading Cargo.toml");
-    let current_crate_package = manifest.crate_package().expect("Error parsing Cargo.toml");
-
-    let domain = current_crate_package.name;
+    let domain = {
+        let manifest = find_crate::Manifest::new().expect("Error reading Cargo.toml");
+        manifest.crate_package().map(|pkg| pkg.name).unwrap_or(
+            std::env::var("CARGO_PKG_NAME")
+                .expect("Error fetching `CARGO_PKG_NAME` env"),
+        )
+    };
 
     let domain_data = if let Some(domain_data) = DOMAINS.get(&domain) {
         domain_data

i18n-embed/i18n-embed-impl/src/lib.rs

@@ -14,10 +14,15 @@
 #[cfg(feature = "gettext-system")]
 pub fn gettext_language_loader(_: proc_macro::TokenStream) -> proc_macro::TokenStream {
     let manifest = find_crate::Manifest::new().expect("Error reading Cargo.toml");
-    let current_crate_package = manifest.crate_package().expect("Error reading Cargo.toml");
+    let current_crate_package_name = {
+        manifest.crate_package().map(|pkg| pkg.name).unwrap_or(
+            std::env::var("CARGO_PKG_NAME")
+                .expect("Error fetching `CARGO_PKG_NAME` env"),
+        )
+    };
 
     // Special case for when this macro is invoked in i18n-embed tests/docs
-    let i18n_embed_crate_name = if current_crate_package.name == "i18n_embed" {
+    let i18n_embed_crate_name = if current_crate_package_name == "i18n_embed" {
         "i18n_embed".to_string()
     } else {
         manifest
@@ -84,10 +89,13 @@ pub fn gettext_language_loader(_: proc_macro::TokenStream) -> proc_macro::TokenS
 #[cfg(feature = "fluent-system")]
 pub fn fluent_language_loader(_: proc_macro::TokenStream) -> proc_macro::TokenStream {
     let manifest = find_crate::Manifest::new().expect("Error reading Cargo.toml");
-    let current_crate_package = manifest.crate_package().expect("Error reading Cargo.toml");
+    let current_crate_package_name = manifest.crate_package().map(|pkg| pkg.name).unwrap_or(
+        std::env::var("CARGO_PKG_NAME")
+            .expect("Error fetching `CARGO_PKG_NAME` env"),
+    );
 
     // Special case for when this macro is invoked in i18n-embed tests/docs
-    let i18n_embed_crate_name = if current_crate_package.name == "i18n_embed" {
+    let i18n_embed_crate_name = if current_crate_package_name == "i18n_embed" {
         "i18n_embed".to_string()
     } else {
         manifest
@@ -131,7 +139,7 @@ pub fn fluent_language_loader(_: proc_macro::TokenStream) -> proc_macro::TokenSt
     let domain_str = config
         .fluent
         .and_then(|f| f.domain)
-        .unwrap_or(current_crate_package.name);
+        .unwrap_or(current_crate_package_name);
     let domain = syn::LitStr::new(&domain_str, proc_macro2::Span::call_site());
 
     let gen = quote::quote! {